/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-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-16 01:02:03,894 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-16 01:02:03,898 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-16 01:02:03,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-16 01:02:03,923 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-16 01:02:03,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-16 01:02:03,925 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-16 01:02:03,927 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-16 01:02:03,929 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-16 01:02:03,929 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-16 01:02:03,930 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-16 01:02:03,932 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-16 01:02:03,932 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-16 01:02:03,933 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-16 01:02:03,934 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-16 01:02:03,935 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-16 01:02:03,936 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-16 01:02:03,937 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-16 01:02:03,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-16 01:02:03,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-16 01:02:03,943 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-16 01:02:03,944 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-16 01:02:03,945 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-16 01:02:03,946 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-16 01:02:03,949 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-16 01:02:03,952 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-16 01:02:03,953 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-16 01:02:03,954 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-16 01:02:03,955 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-16 01:02:03,958 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-16 01:02:03,958 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-16 01:02:03,959 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-16 01:02:03,959 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-16 01:02:03,959 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-16 01:02:03,961 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-16 01:02:03,962 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-16 01:02:03,964 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 01:02:04,011 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-16 01:02:04,011 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-16 01:02:04,014 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-16 01:02:04,014 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-16 01:02:04,015 INFO L138 SettingsManager]: * Use SBE=true [2020-10-16 01:02:04,015 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-16 01:02:04,015 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-16 01:02:04,015 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-16 01:02:04,015 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-16 01:02:04,016 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-16 01:02:04,016 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-16 01:02:04,016 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-16 01:02:04,016 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-16 01:02:04,016 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-16 01:02:04,017 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-16 01:02:04,017 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-16 01:02:04,017 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-16 01:02:04,018 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-16 01:02:04,018 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-16 01:02:04,018 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-16 01:02:04,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-16 01:02:04,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-16 01:02:04,019 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-16 01:02:04,019 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-16 01:02:04,019 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-16 01:02:04,019 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-16 01:02:04,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-16 01:02:04,020 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2020-10-16 01:02:04,020 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-16 01:02:04,384 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-16 01:02:04,408 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-16 01:02:04,413 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-16 01:02:04,414 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-16 01:02:04,415 INFO L275 PluginConnector]: CDTParser initialized [2020-10-16 01:02:04,416 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 01:02:04,498 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3977a8d/5d700f02bf2e4cb487e0a58adcaf3bd9/FLAG0dc694baf [2020-10-16 01:02:05,078 INFO L306 CDTParser]: Found 1 translation units. [2020-10-16 01:02:05,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-16 01:02:05,106 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3977a8d/5d700f02bf2e4cb487e0a58adcaf3bd9/FLAG0dc694baf [2020-10-16 01:02:05,330 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/bf3977a8d/5d700f02bf2e4cb487e0a58adcaf3bd9 [2020-10-16 01:02:05,339 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-16 01:02:05,344 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-16 01:02:05,345 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-16 01:02:05,345 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-16 01:02:05,349 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-16 01:02:05,350 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:05" (1/1) ... [2020-10-16 01:02:05,353 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13705256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:05, skipping insertion in model container [2020-10-16 01:02:05,353 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.10 01:02:05" (1/1) ... [2020-10-16 01:02:05,361 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-16 01:02:05,411 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-16 01:02:05,913 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:02:05,931 INFO L203 MainTranslator]: Completed pre-run [2020-10-16 01:02:05,991 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-16 01:02:06,063 INFO L208 MainTranslator]: Completed translation [2020-10-16 01:02:06,064 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06 WrapperNode [2020-10-16 01:02:06,064 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-16 01:02:06,065 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-16 01:02:06,065 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-16 01:02:06,065 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-16 01:02:06,074 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,089 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,109 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-16 01:02:06,110 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-16 01:02:06,110 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-16 01:02:06,110 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-16 01:02:06,119 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,120 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,127 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,134 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,135 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (1/1) ... [2020-10-16 01:02:06,138 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-16 01:02:06,138 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-16 01:02:06,138 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-16 01:02:06,139 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-16 01:02:06,139 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (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 01:02:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-16 01:02:06,214 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-16 01:02:06,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-16 01:02:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-16 01:02:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-16 01:02:06,215 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-16 01:02:06,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-16 01:02:06,217 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 01:02:06,506 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-16 01:02:06,507 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-16 01:02:06,508 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:06 BoogieIcfgContainer [2020-10-16 01:02:06,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-16 01:02:06,510 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-16 01:02:06,510 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-16 01:02:06,517 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-16 01:02:06,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.10 01:02:05" (1/3) ... [2020-10-16 01:02:06,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2b100c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:06, skipping insertion in model container [2020-10-16 01:02:06,518 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.10 01:02:06" (2/3) ... [2020-10-16 01:02:06,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c2b100c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.10 01:02:06, skipping insertion in model container [2020-10-16 01:02:06,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.10 01:02:06" (3/3) ... [2020-10-16 01:02:06,520 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-16 01:02:06,533 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-16 01:02:06,541 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-16 01:02:06,542 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-16 01:02:06,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,564 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,569 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,569 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:06,590 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-16 01:02:06,607 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:06,608 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:06,608 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:06,608 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:06,608 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:06,608 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:06,608 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:06,608 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:06,620 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,651 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-16 01:02:06,651 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:06,656 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 59 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-16 01:02:06,656 INFO L82 GeneralOperation]: Start removeDead. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,662 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,665 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:06,667 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,670 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-16 01:02:06,683 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-16 01:02:06,684 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:06,684 INFO L80 FinitePrefix]: Finished finitePrefix Result has 41 conditions, 36 events. 3/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 55 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 18. Up to 4 conditions per place. [2020-10-16 01:02:06,686 INFO L117 LiptonReduction]: Number of co-enabled transitions 180 [2020-10-16 01:02:07,186 INFO L132 LiptonReduction]: Checked pairs total: 146 [2020-10-16 01:02:07,186 INFO L134 LiptonReduction]: Total number of compositions: 24 [2020-10-16 01:02:07,189 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 526 [2020-10-16 01:02:07,196 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:02:07,196 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:07,197 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:07,198 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:07,198 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:02:07,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:07,204 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-16 01:02:07,215 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:07,216 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149883385] [2020-10-16 01:02:07,216 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:07,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:07,400 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 01:02:07,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149883385] [2020-10-16 01:02:07,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:07,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:07,403 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1806066084] [2020-10-16 01:02:07,413 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:07,414 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:07,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:07,431 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:07,433 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 28 out of 52 [2020-10-16 01:02:07,434 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states. [2020-10-16 01:02:07,434 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:07,435 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 28 of 52 [2020-10-16 01:02:07,436 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:07,451 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 01:02:07,451 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:07,451 INFO L80 FinitePrefix]: Finished finitePrefix Result has 15 conditions, 7 events. 0/7 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 2 event pairs, 0 based on Foata normal form. 3/10 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2020-10-16 01:02:07,453 INFO L132 encePairwiseOnDemand]: 48/52 looper letters, 0 selfloop transitions, 2 changer transitions 0/6 dead transitions. [2020-10-16 01:02:07,453 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 11 places, 6 transitions, 21 flow [2020-10-16 01:02:07,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:07,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:07,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2020-10-16 01:02:07,469 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5705128205128205 [2020-10-16 01:02:07,469 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 89 transitions. [2020-10-16 01:02:07,470 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 89 transitions. [2020-10-16 01:02:07,472 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:07,475 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 89 transitions. [2020-10-16 01:02:07,477 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:07,482 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:07,483 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:07,485 INFO L185 Difference]: Start difference. First operand has 11 places, 8 transitions, 21 flow. Second operand 3 states and 89 transitions. [2020-10-16 01:02:07,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 11 places, 6 transitions, 21 flow [2020-10-16 01:02:07,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 6 transitions, 21 flow, removed 0 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:07,491 INFO L241 Difference]: Finished difference. Result has 11 places, 6 transitions, 21 flow [2020-10-16 01:02:07,494 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=52, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=9, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=6, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=4, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=21, PETRI_PLACES=11, PETRI_TRANSITIONS=6} [2020-10-16 01:02:07,495 INFO L342 CegarLoopForPetriNet]: 11 programPoint places, 0 predicate places. [2020-10-16 01:02:07,495 INFO L481 AbstractCegarLoop]: Abstraction has has 11 places, 6 transitions, 21 flow [2020-10-16 01:02:07,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:07,496 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:07,496 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2020-10-16 01:02:07,496 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-16 01:02:07,496 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:02:07,497 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:07,497 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-16 01:02:07,497 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:07,498 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129269051] [2020-10-16 01:02:07,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:07,520 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:07,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:07,530 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:07,552 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:07,552 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:07,554 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-16 01:02:07,555 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:07,556 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-16 01:02:07,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,562 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,563 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,563 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,564 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,565 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,565 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,566 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,567 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,567 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,571 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,572 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:07,594 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-16 01:02:07,594 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:07,594 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:07,594 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:07,594 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:07,595 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:07,595 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:07,595 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:07,595 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:07,597 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,612 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 01:02:07,612 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:02:07,614 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 118 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 01:02:07,614 INFO L82 GeneralOperation]: Start removeDead. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,615 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,615 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:07,616 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,616 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,616 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-16 01:02:07,627 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-16 01:02:07,627 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:02:07,628 INFO L80 FinitePrefix]: Finished finitePrefix Result has 65 conditions, 55 events. 5/55 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 110 event pairs, 0 based on Foata normal form. 0/45 useless extension candidates. Maximal degree in co-relation 37. Up to 6 conditions per place. [2020-10-16 01:02:07,630 INFO L117 LiptonReduction]: Number of co-enabled transitions 540 [2020-10-16 01:02:08,107 INFO L132 LiptonReduction]: Checked pairs total: 955 [2020-10-16 01:02:08,107 INFO L134 LiptonReduction]: Total number of compositions: 31 [2020-10-16 01:02:08,108 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 493 [2020-10-16 01:02:08,110 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:02:08,110 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:08,110 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:08,110 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:08,111 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:08,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:08,111 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-10-16 01:02:08,111 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:08,112 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692378104] [2020-10-16 01:02:08,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:08,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:08,174 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 01:02:08,174 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692378104] [2020-10-16 01:02:08,174 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:08,175 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:08,175 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170848234] [2020-10-16 01:02:08,175 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:08,175 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:08,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:08,176 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:08,178 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 34 out of 69 [2020-10-16 01:02:08,178 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 20 places, 16 transitions, 44 flow. Second operand 3 states. [2020-10-16 01:02:08,179 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:08,179 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 34 of 69 [2020-10-16 01:02:08,179 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:08,210 INFO L129 PetriNetUnfolder]: 4/26 cut-off events. [2020-10-16 01:02:08,210 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-16 01:02:08,210 INFO L80 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 26 events. 4/26 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 59 event pairs, 1 based on Foata normal form. 13/35 useless extension candidates. Maximal degree in co-relation 33. Up to 11 conditions per place. [2020-10-16 01:02:08,211 INFO L132 encePairwiseOnDemand]: 62/69 looper letters, 8 selfloop transitions, 3 changer transitions 0/18 dead transitions. [2020-10-16 01:02:08,211 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 18 transitions, 70 flow [2020-10-16 01:02:08,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:08,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:08,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 119 transitions. [2020-10-16 01:02:08,214 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5748792270531401 [2020-10-16 01:02:08,214 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 119 transitions. [2020-10-16 01:02:08,215 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 119 transitions. [2020-10-16 01:02:08,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:08,216 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 119 transitions. [2020-10-16 01:02:08,217 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:08,218 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:08,218 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:08,218 INFO L185 Difference]: Start difference. First operand has 20 places, 16 transitions, 44 flow. Second operand 3 states and 119 transitions. [2020-10-16 01:02:08,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 18 transitions, 70 flow [2020-10-16 01:02:08,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 18 transitions, 68 flow, removed 1 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:08,221 INFO L241 Difference]: Finished difference. Result has 22 places, 16 transitions, 59 flow [2020-10-16 01:02:08,221 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=69, PETRI_DIFFERENCE_MINUEND_FLOW=38, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=14, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=59, PETRI_PLACES=22, PETRI_TRANSITIONS=16} [2020-10-16 01:02:08,221 INFO L342 CegarLoopForPetriNet]: 20 programPoint places, 2 predicate places. [2020-10-16 01:02:08,222 INFO L481 AbstractCegarLoop]: Abstraction has has 22 places, 16 transitions, 59 flow [2020-10-16 01:02:08,222 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:08,222 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:08,222 INFO L255 CegarLoopForPetriNet]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-16 01:02:08,222 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-16 01:02:08,222 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:08,223 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:08,223 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-10-16 01:02:08,223 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:08,223 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1069360639] [2020-10-16 01:02:08,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:08,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:08,239 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:08,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:08,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:08,254 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:08,255 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:08,255 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-16 01:02:08,255 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:08,257 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-16 01:02:08,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,263 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,263 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,264 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,265 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,265 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,266 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,266 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,267 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,268 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,268 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,270 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,271 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:08,275 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-16 01:02:08,276 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:08,276 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:08,276 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:08,276 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:08,276 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:08,276 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:08,276 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:08,276 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:08,278 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,291 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 01:02:08,291 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:02:08,292 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 170 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-16 01:02:08,292 INFO L82 GeneralOperation]: Start removeDead. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,293 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,293 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:08,294 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,294 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,294 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-16 01:02:08,313 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-16 01:02:08,316 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:02:08,317 INFO L80 FinitePrefix]: Finished finitePrefix Result has 90 conditions, 74 events. 7/74 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 161 event pairs, 0 based on Foata normal form. 0/60 useless extension candidates. Maximal degree in co-relation 59. Up to 8 conditions per place. [2020-10-16 01:02:08,320 INFO L117 LiptonReduction]: Number of co-enabled transitions 1080 [2020-10-16 01:02:09,059 INFO L132 LiptonReduction]: Checked pairs total: 2791 [2020-10-16 01:02:09,060 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-16 01:02:09,060 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 767 [2020-10-16 01:02:09,062 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 01:02:09,062 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:09,063 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:09,063 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:09,063 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:09,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:09,064 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-10-16 01:02:09,064 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:09,064 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541086709] [2020-10-16 01:02:09,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:09,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:09,092 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 01:02:09,092 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541086709] [2020-10-16 01:02:09,092 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:09,093 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:09,093 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239333969] [2020-10-16 01:02:09,093 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:09,093 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:09,094 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:09,094 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:09,095 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 41 out of 90 [2020-10-16 01:02:09,095 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 23 transitions, 67 flow. Second operand 3 states. [2020-10-16 01:02:09,095 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:09,095 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 41 of 90 [2020-10-16 01:02:09,095 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:09,141 INFO L129 PetriNetUnfolder]: 43/110 cut-off events. [2020-10-16 01:02:09,142 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-16 01:02:09,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 215 conditions, 110 events. 43/110 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 456 event pairs, 15 based on Foata normal form. 49/129 useless extension candidates. Maximal degree in co-relation 187. Up to 76 conditions per place. [2020-10-16 01:02:09,144 INFO L132 encePairwiseOnDemand]: 79/90 looper letters, 12 selfloop transitions, 4 changer transitions 0/25 dead transitions. [2020-10-16 01:02:09,144 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 103 flow [2020-10-16 01:02:09,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:09,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:09,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 150 transitions. [2020-10-16 01:02:09,146 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2020-10-16 01:02:09,146 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 150 transitions. [2020-10-16 01:02:09,147 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 150 transitions. [2020-10-16 01:02:09,147 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:09,147 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 150 transitions. [2020-10-16 01:02:09,148 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:09,149 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:09,149 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:09,149 INFO L185 Difference]: Start difference. First operand has 27 places, 23 transitions, 67 flow. Second operand 3 states and 150 transitions. [2020-10-16 01:02:09,149 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 103 flow [2020-10-16 01:02:09,150 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 25 transitions, 97 flow, removed 3 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:09,151 INFO L241 Difference]: Finished difference. Result has 29 places, 22 transitions, 83 flow [2020-10-16 01:02:09,151 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=29, PETRI_TRANSITIONS=22} [2020-10-16 01:02:09,152 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 2 predicate places. [2020-10-16 01:02:09,152 INFO L481 AbstractCegarLoop]: Abstraction has has 29 places, 22 transitions, 83 flow [2020-10-16 01:02:09,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:09,152 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:09,152 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:09,152 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-16 01:02:09,153 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:09,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:09,153 INFO L82 PathProgramCache]: Analyzing trace with hash -1946857634, now seen corresponding path program 1 times [2020-10-16 01:02:09,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:09,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [99658862] [2020-10-16 01:02:09,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:09,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:09,185 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:02:09,185 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [99658862] [2020-10-16 01:02:09,185 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:09,185 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:09,186 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1872782237] [2020-10-16 01:02:09,186 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:09,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:09,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:09,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:09,188 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 46 out of 90 [2020-10-16 01:02:09,188 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 22 transitions, 83 flow. Second operand 3 states. [2020-10-16 01:02:09,188 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:09,188 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 46 of 90 [2020-10-16 01:02:09,188 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:09,223 INFO L129 PetriNetUnfolder]: 38/104 cut-off events. [2020-10-16 01:02:09,223 INFO L130 PetriNetUnfolder]: For 23/28 co-relation queries the response was YES. [2020-10-16 01:02:09,224 INFO L80 FinitePrefix]: Finished finitePrefix Result has 233 conditions, 104 events. 38/104 cut-off events. For 23/28 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 376 event pairs, 7 based on Foata normal form. 22/120 useless extension candidates. Maximal degree in co-relation 213. Up to 42 conditions per place. [2020-10-16 01:02:09,225 INFO L132 encePairwiseOnDemand]: 84/90 looper letters, 10 selfloop transitions, 3 changer transitions 0/25 dead transitions. [2020-10-16 01:02:09,225 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 28 places, 25 transitions, 109 flow [2020-10-16 01:02:09,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:09,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:09,227 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 154 transitions. [2020-10-16 01:02:09,228 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5703703703703704 [2020-10-16 01:02:09,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 154 transitions. [2020-10-16 01:02:09,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 154 transitions. [2020-10-16 01:02:09,229 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:09,229 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 154 transitions. [2020-10-16 01:02:09,229 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:09,230 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:09,231 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:09,231 INFO L185 Difference]: Start difference. First operand has 29 places, 22 transitions, 83 flow. Second operand 3 states and 154 transitions. [2020-10-16 01:02:09,231 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 28 places, 25 transitions, 109 flow [2020-10-16 01:02:09,232 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 25 transitions, 105 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:09,233 INFO L241 Difference]: Finished difference. Result has 28 places, 22 transitions, 88 flow [2020-10-16 01:02:09,233 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=90, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=19, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=88, PETRI_PLACES=28, PETRI_TRANSITIONS=22} [2020-10-16 01:02:09,233 INFO L342 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2020-10-16 01:02:09,234 INFO L481 AbstractCegarLoop]: Abstraction has has 28 places, 22 transitions, 88 flow [2020-10-16 01:02:09,234 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:09,234 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:09,234 INFO L255 CegarLoopForPetriNet]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-16 01:02:09,234 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-16 01:02:09,235 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:09,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:09,235 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-10-16 01:02:09,235 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:09,235 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1864305328] [2020-10-16 01:02:09,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:09,249 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:09,259 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:09,264 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:09,264 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:09,265 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-16 01:02:09,265 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:09,265 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-16 01:02:09,271 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,272 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,272 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,273 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,273 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,274 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,274 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,275 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,275 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,276 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,276 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,277 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,277 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,280 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,281 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,282 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,282 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,283 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,284 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,284 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:09,285 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-16 01:02:09,286 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:09,286 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:09,286 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:09,286 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:09,286 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:09,286 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:09,286 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:09,287 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:09,289 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,298 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-16 01:02:09,298 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:02:09,299 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 209 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 01:02:09,299 INFO L82 GeneralOperation]: Start removeDead. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,300 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,300 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:09,300 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,301 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,301 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-16 01:02:09,309 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-16 01:02:09,310 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:02:09,310 INFO L80 FinitePrefix]: Finished finitePrefix Result has 116 conditions, 93 events. 9/93 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 208 event pairs, 0 based on Foata normal form. 0/75 useless extension candidates. Maximal degree in co-relation 83. Up to 10 conditions per place. [2020-10-16 01:02:09,313 INFO L117 LiptonReduction]: Number of co-enabled transitions 1800 [2020-10-16 01:02:10,336 INFO L132 LiptonReduction]: Checked pairs total: 4061 [2020-10-16 01:02:10,336 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-16 01:02:10,336 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1036 [2020-10-16 01:02:10,338 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 01:02:10,338 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:10,338 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:10,338 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:10,339 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:02:10,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:10,339 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-10-16 01:02:10,339 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:10,339 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607236376] [2020-10-16 01:02:10,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:10,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:10,360 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 01:02:10,361 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607236376] [2020-10-16 01:02:10,361 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:10,361 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:10,361 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518260253] [2020-10-16 01:02:10,362 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:10,362 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:10,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:10,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:10,363 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 47 out of 107 [2020-10-16 01:02:10,363 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 28 transitions, 88 flow. Second operand 3 states. [2020-10-16 01:02:10,363 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:10,363 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 47 of 107 [2020-10-16 01:02:10,364 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:10,474 INFO L129 PetriNetUnfolder]: 318/576 cut-off events. [2020-10-16 01:02:10,474 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-16 01:02:10,477 INFO L80 FinitePrefix]: Finished finitePrefix Result has 1109 conditions, 576 events. 318/576 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 3206 event pairs, 157 based on Foata normal form. 197/586 useless extension candidates. Maximal degree in co-relation 1071. Up to 477 conditions per place. [2020-10-16 01:02:10,482 INFO L132 encePairwiseOnDemand]: 94/107 looper letters, 16 selfloop transitions, 5 changer transitions 0/32 dead transitions. [2020-10-16 01:02:10,483 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 32 transitions, 138 flow [2020-10-16 01:02:10,483 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:10,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:10,484 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 174 transitions. [2020-10-16 01:02:10,485 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5420560747663551 [2020-10-16 01:02:10,485 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 174 transitions. [2020-10-16 01:02:10,485 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 174 transitions. [2020-10-16 01:02:10,486 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:10,486 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 174 transitions. [2020-10-16 01:02:10,487 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:10,488 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:10,488 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:10,488 INFO L185 Difference]: Start difference. First operand has 34 places, 28 transitions, 88 flow. Second operand 3 states and 174 transitions. [2020-10-16 01:02:10,488 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 32 transitions, 138 flow [2020-10-16 01:02:10,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 32 transitions, 126 flow, removed 6 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:10,490 INFO L241 Difference]: Finished difference. Result has 36 places, 28 transitions, 107 flow [2020-10-16 01:02:10,491 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=107, PETRI_PLACES=36, PETRI_TRANSITIONS=28} [2020-10-16 01:02:10,491 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2020-10-16 01:02:10,491 INFO L481 AbstractCegarLoop]: Abstraction has has 36 places, 28 transitions, 107 flow [2020-10-16 01:02:10,491 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:10,491 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:10,492 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:10,492 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-16 01:02:10,492 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:02:10,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:10,492 INFO L82 PathProgramCache]: Analyzing trace with hash 637927375, now seen corresponding path program 1 times [2020-10-16 01:02:10,493 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:10,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918291529] [2020-10-16 01:02:10,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:10,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:10,520 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:02:10,521 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918291529] [2020-10-16 01:02:10,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:10,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:10,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [297977075] [2020-10-16 01:02:10,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:10,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:10,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:10,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:10,523 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 52 out of 107 [2020-10-16 01:02:10,523 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 28 transitions, 107 flow. Second operand 3 states. [2020-10-16 01:02:10,524 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:10,524 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 52 of 107 [2020-10-16 01:02:10,524 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:10,594 INFO L129 PetriNetUnfolder]: 204/419 cut-off events. [2020-10-16 01:02:10,594 INFO L130 PetriNetUnfolder]: For 151/215 co-relation queries the response was YES. [2020-10-16 01:02:10,597 INFO L80 FinitePrefix]: Finished finitePrefix Result has 910 conditions, 419 events. 204/419 cut-off events. For 151/215 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2128 event pairs, 40 based on Foata normal form. 137/529 useless extension candidates. Maximal degree in co-relation 889. Up to 189 conditions per place. [2020-10-16 01:02:10,600 INFO L132 encePairwiseOnDemand]: 99/107 looper letters, 13 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2020-10-16 01:02:10,600 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 32 transitions, 141 flow [2020-10-16 01:02:10,600 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:10,601 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:10,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 177 transitions. [2020-10-16 01:02:10,602 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5514018691588785 [2020-10-16 01:02:10,602 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 177 transitions. [2020-10-16 01:02:10,602 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 177 transitions. [2020-10-16 01:02:10,602 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:10,602 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 177 transitions. [2020-10-16 01:02:10,603 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:10,604 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:10,604 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:10,604 INFO L185 Difference]: Start difference. First operand has 36 places, 28 transitions, 107 flow. Second operand 3 states and 177 transitions. [2020-10-16 01:02:10,604 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 32 transitions, 141 flow [2020-10-16 01:02:10,606 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 32 transitions, 136 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:10,607 INFO L241 Difference]: Finished difference. Result has 34 places, 28 transitions, 114 flow [2020-10-16 01:02:10,607 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=107, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=114, PETRI_PLACES=34, PETRI_TRANSITIONS=28} [2020-10-16 01:02:10,607 INFO L342 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2020-10-16 01:02:10,608 INFO L481 AbstractCegarLoop]: Abstraction has has 34 places, 28 transitions, 114 flow [2020-10-16 01:02:10,608 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:10,608 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:10,608 INFO L255 CegarLoopForPetriNet]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:10,608 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-16 01:02:10,608 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-16 01:02:10,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:10,609 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-10-16 01:02:10,609 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:10,609 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104653358] [2020-10-16 01:02:10,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:10,621 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:10,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:10,629 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:10,634 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:10,634 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:10,635 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-16 01:02:10,635 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:10,636 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-16 01:02:10,642 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,643 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,643 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,644 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,644 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,645 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,646 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,647 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,648 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,648 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,657 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:10,660 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-16 01:02:10,660 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:10,660 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:10,660 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:10,660 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:10,661 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:10,661 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:10,661 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:10,661 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:10,663 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,673 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-16 01:02:10,674 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:02:10,675 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 265 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-16 01:02:10,675 INFO L82 GeneralOperation]: Start removeDead. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,676 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,676 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:10,676 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,676 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,677 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-16 01:02:10,686 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-16 01:02:10,686 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:02:10,687 INFO L80 FinitePrefix]: Finished finitePrefix Result has 143 conditions, 112 events. 11/112 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 285 event pairs, 0 based on Foata normal form. 0/90 useless extension candidates. Maximal degree in co-relation 109. Up to 12 conditions per place. [2020-10-16 01:02:10,690 INFO L117 LiptonReduction]: Number of co-enabled transitions 2700 [2020-10-16 01:02:12,074 INFO L132 LiptonReduction]: Checked pairs total: 7443 [2020-10-16 01:02:12,075 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-16 01:02:12,075 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1399 [2020-10-16 01:02:12,080 INFO L129 PetriNetUnfolder]: 0/5 cut-off events. [2020-10-16 01:02:12,080 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:12,080 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:12,081 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:12,081 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:12,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:12,081 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-10-16 01:02:12,082 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:12,082 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [542488204] [2020-10-16 01:02:12,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:12,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:12,156 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 01:02:12,157 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [542488204] [2020-10-16 01:02:12,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:12,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:12,158 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1122330957] [2020-10-16 01:02:12,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:12,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:12,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:12,160 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:12,161 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 53 out of 128 [2020-10-16 01:02:12,161 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 115 flow. Second operand 3 states. [2020-10-16 01:02:12,162 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:12,162 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 53 of 128 [2020-10-16 01:02:12,162 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:12,671 INFO L129 PetriNetUnfolder]: 1973/3075 cut-off events. [2020-10-16 01:02:12,672 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-16 01:02:12,682 INFO L80 FinitePrefix]: Finished finitePrefix Result has 5893 conditions, 3075 events. 1973/3075 cut-off events. For 30/30 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 19659 event pairs, 1183 based on Foata normal form. 821/2904 useless extension candidates. Maximal degree in co-relation 5844. Up to 2706 conditions per place. [2020-10-16 01:02:12,711 INFO L132 encePairwiseOnDemand]: 111/128 looper letters, 20 selfloop transitions, 6 changer transitions 0/39 dead transitions. [2020-10-16 01:02:12,711 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 39 transitions, 175 flow [2020-10-16 01:02:12,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:12,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:12,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 202 transitions. [2020-10-16 01:02:12,713 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5260416666666666 [2020-10-16 01:02:12,713 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 202 transitions. [2020-10-16 01:02:12,714 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 202 transitions. [2020-10-16 01:02:12,714 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:12,714 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 202 transitions. [2020-10-16 01:02:12,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:12,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:12,716 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:12,716 INFO L185 Difference]: Start difference. First operand has 41 places, 35 transitions, 115 flow. Second operand 3 states and 202 transitions. [2020-10-16 01:02:12,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 39 transitions, 175 flow [2020-10-16 01:02:12,718 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 39 transitions, 155 flow, removed 10 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:12,720 INFO L241 Difference]: Finished difference. Result has 43 places, 34 transitions, 131 flow [2020-10-16 01:02:12,721 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=83, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=131, PETRI_PLACES=43, PETRI_TRANSITIONS=34} [2020-10-16 01:02:12,721 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, 2 predicate places. [2020-10-16 01:02:12,721 INFO L481 AbstractCegarLoop]: Abstraction has has 43 places, 34 transitions, 131 flow [2020-10-16 01:02:12,721 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:12,721 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:12,722 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:12,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-16 01:02:12,722 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:12,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:12,722 INFO L82 PathProgramCache]: Analyzing trace with hash 2126634833, now seen corresponding path program 1 times [2020-10-16 01:02:12,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:12,724 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958729283] [2020-10-16 01:02:12,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:12,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:12,759 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:02:12,760 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958729283] [2020-10-16 01:02:12,760 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:12,760 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:12,760 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802779014] [2020-10-16 01:02:12,761 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:12,761 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:12,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:12,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:12,764 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 61 out of 128 [2020-10-16 01:02:12,764 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 34 transitions, 131 flow. Second operand 3 states. [2020-10-16 01:02:12,764 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:12,764 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 61 of 128 [2020-10-16 01:02:12,764 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:12,973 INFO L129 PetriNetUnfolder]: 960/1716 cut-off events. [2020-10-16 01:02:12,974 INFO L130 PetriNetUnfolder]: For 879/1417 co-relation queries the response was YES. [2020-10-16 01:02:12,986 INFO L80 FinitePrefix]: Finished finitePrefix Result has 3651 conditions, 1716 events. 960/1716 cut-off events. For 879/1417 co-relation queries the response was YES. Maximal size of possible extension queue 147. Compared 10639 event pairs, 219 based on Foata normal form. 742/2336 useless extension candidates. Maximal degree in co-relation 3629. Up to 889 conditions per place. [2020-10-16 01:02:13,002 INFO L132 encePairwiseOnDemand]: 118/128 looper letters, 16 selfloop transitions, 5 changer transitions 0/39 dead transitions. [2020-10-16 01:02:13,002 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 39 transitions, 173 flow [2020-10-16 01:02:13,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:13,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:13,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 209 transitions. [2020-10-16 01:02:13,004 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5442708333333334 [2020-10-16 01:02:13,004 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 209 transitions. [2020-10-16 01:02:13,004 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 209 transitions. [2020-10-16 01:02:13,005 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:13,005 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 209 transitions. [2020-10-16 01:02:13,006 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:13,007 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:13,007 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:13,007 INFO L185 Difference]: Start difference. First operand has 43 places, 34 transitions, 131 flow. Second operand 3 states and 209 transitions. [2020-10-16 01:02:13,007 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 39 transitions, 173 flow [2020-10-16 01:02:13,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 39 transitions, 167 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:13,013 INFO L241 Difference]: Finished difference. Result has 40 places, 34 transitions, 140 flow [2020-10-16 01:02:13,013 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=128, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2020-10-16 01:02:13,013 INFO L342 CegarLoopForPetriNet]: 41 programPoint places, -1 predicate places. [2020-10-16 01:02:13,013 INFO L481 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 140 flow [2020-10-16 01:02:13,014 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:13,014 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:13,014 INFO L255 CegarLoopForPetriNet]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:13,014 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-16 01:02:13,014 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:13,014 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:13,015 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-10-16 01:02:13,015 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:13,015 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540319039] [2020-10-16 01:02:13,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:13,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:13,040 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:13,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:13,053 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:13,066 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:13,067 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:13,067 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-16 01:02:13,068 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:13,068 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-16 01:02:13,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,078 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,078 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,079 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,080 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,080 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,081 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,082 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,082 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,083 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,084 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,085 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,085 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,086 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,086 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,087 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,087 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,088 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,088 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,089 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,092 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,093 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,093 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,098 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,099 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,099 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,100 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,100 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,102 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,102 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,103 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,104 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,104 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:13,105 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-16 01:02:13,105 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:13,105 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:13,105 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:13,105 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:13,106 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:13,106 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:13,106 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:13,106 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:13,111 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,125 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-16 01:02:13,126 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 01:02:13,127 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 328 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-16 01:02:13,127 INFO L82 GeneralOperation]: Start removeDead. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,128 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,129 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:13,129 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,129 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,129 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-16 01:02:13,141 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-16 01:02:13,141 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 01:02:13,142 INFO L80 FinitePrefix]: Finished finitePrefix Result has 171 conditions, 131 events. 13/131 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 336 event pairs, 0 based on Foata normal form. 0/105 useless extension candidates. Maximal degree in co-relation 136. Up to 14 conditions per place. [2020-10-16 01:02:13,148 INFO L117 LiptonReduction]: Number of co-enabled transitions 3780 [2020-10-16 01:02:14,643 INFO L132 LiptonReduction]: Checked pairs total: 8748 [2020-10-16 01:02:14,643 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-16 01:02:14,643 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1514 [2020-10-16 01:02:14,645 INFO L129 PetriNetUnfolder]: 0/7 cut-off events. [2020-10-16 01:02:14,645 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:14,645 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:14,645 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:14,645 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:14,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:14,647 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-10-16 01:02:14,647 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:14,648 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [936707283] [2020-10-16 01:02:14,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:14,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:14,671 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 01:02:14,672 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [936707283] [2020-10-16 01:02:14,672 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:14,672 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:14,672 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099764244] [2020-10-16 01:02:14,673 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:14,673 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:14,674 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:14,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:14,674 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 60 out of 144 [2020-10-16 01:02:14,675 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 39 transitions, 138 flow. Second operand 3 states. [2020-10-16 01:02:14,675 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:14,675 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 60 of 144 [2020-10-16 01:02:14,675 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:16,639 INFO L129 PetriNetUnfolder]: 11012/15700 cut-off events. [2020-10-16 01:02:16,640 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-16 01:02:16,727 INFO L80 FinitePrefix]: Finished finitePrefix Result has 30184 conditions, 15700 events. 11012/15700 cut-off events. For 50/50 co-relation queries the response was YES. Maximal size of possible extension queue 1524. Compared 108263 event pairs, 7369 based on Foata normal form. 3441/14151 useless extension candidates. Maximal degree in co-relation 30123. Up to 14251 conditions per place. [2020-10-16 01:02:16,846 INFO L132 encePairwiseOnDemand]: 126/144 looper letters, 24 selfloop transitions, 7 changer transitions 0/46 dead transitions. [2020-10-16 01:02:16,847 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 46 transitions, 214 flow [2020-10-16 01:02:16,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:16,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:16,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 227 transitions. [2020-10-16 01:02:16,848 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5254629629629629 [2020-10-16 01:02:16,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 227 transitions. [2020-10-16 01:02:16,849 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 227 transitions. [2020-10-16 01:02:16,849 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:16,849 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 227 transitions. [2020-10-16 01:02:16,850 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:16,850 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:16,851 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:16,851 INFO L185 Difference]: Start difference. First operand has 48 places, 39 transitions, 138 flow. Second operand 3 states and 227 transitions. [2020-10-16 01:02:16,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 46 transitions, 214 flow [2020-10-16 01:02:16,852 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 46 transitions, 184 flow, removed 15 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:16,853 INFO L241 Difference]: Finished difference. Result has 50 places, 40 transitions, 155 flow [2020-10-16 01:02:16,853 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=98, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=155, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2020-10-16 01:02:16,853 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, 2 predicate places. [2020-10-16 01:02:16,854 INFO L481 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 155 flow [2020-10-16 01:02:16,854 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:16,854 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:16,854 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:16,854 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-16 01:02:16,854 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:16,855 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:16,855 INFO L82 PathProgramCache]: Analyzing trace with hash -1088106256, now seen corresponding path program 1 times [2020-10-16 01:02:16,855 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:16,855 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1311836218] [2020-10-16 01:02:16,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:16,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:16,871 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:02:16,872 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1311836218] [2020-10-16 01:02:16,872 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:16,872 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:16,872 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200479982] [2020-10-16 01:02:16,873 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:16,873 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:16,873 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:16,873 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:16,874 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 70 out of 144 [2020-10-16 01:02:16,874 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 155 flow. Second operand 3 states. [2020-10-16 01:02:16,874 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:16,875 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 70 of 144 [2020-10-16 01:02:16,875 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:17,507 INFO L129 PetriNetUnfolder]: 4252/7017 cut-off events. [2020-10-16 01:02:17,507 INFO L130 PetriNetUnfolder]: For 4691/8520 co-relation queries the response was YES. [2020-10-16 01:02:17,558 INFO L80 FinitePrefix]: Finished finitePrefix Result has 14708 conditions, 7017 events. 4252/7017 cut-off events. For 4691/8520 co-relation queries the response was YES. Maximal size of possible extension queue 546. Compared 50626 event pairs, 1162 based on Foata normal form. 3676/10138 useless extension candidates. Maximal degree in co-relation 14685. Up to 4081 conditions per place. [2020-10-16 01:02:17,605 INFO L132 encePairwiseOnDemand]: 132/144 looper letters, 19 selfloop transitions, 6 changer transitions 0/46 dead transitions. [2020-10-16 01:02:17,605 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 46 places, 46 transitions, 205 flow [2020-10-16 01:02:17,606 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:17,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:17,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 241 transitions. [2020-10-16 01:02:17,607 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5578703703703703 [2020-10-16 01:02:17,607 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 241 transitions. [2020-10-16 01:02:17,607 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 241 transitions. [2020-10-16 01:02:17,608 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:17,608 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 241 transitions. [2020-10-16 01:02:17,608 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:17,609 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:17,610 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:17,610 INFO L185 Difference]: Start difference. First operand has 50 places, 40 transitions, 155 flow. Second operand 3 states and 241 transitions. [2020-10-16 01:02:17,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 46 places, 46 transitions, 205 flow [2020-10-16 01:02:17,616 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 45 places, 46 transitions, 198 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:17,618 INFO L241 Difference]: Finished difference. Result has 46 places, 40 transitions, 166 flow [2020-10-16 01:02:17,618 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=144, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=166, PETRI_PLACES=46, PETRI_TRANSITIONS=40} [2020-10-16 01:02:17,618 INFO L342 CegarLoopForPetriNet]: 48 programPoint places, -2 predicate places. [2020-10-16 01:02:17,618 INFO L481 AbstractCegarLoop]: Abstraction has has 46 places, 40 transitions, 166 flow [2020-10-16 01:02:17,619 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:17,619 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:17,619 INFO L255 CegarLoopForPetriNet]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:17,619 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-16 01:02:17,619 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:17,619 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:17,619 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-10-16 01:02:17,620 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:17,620 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790964316] [2020-10-16 01:02:17,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:17,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:17,628 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:17,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:17,634 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:17,639 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:17,640 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:17,640 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-16 01:02:17,641 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:17,641 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-16 01:02:17,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,649 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,649 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,650 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,651 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,652 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,653 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,654 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,655 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,656 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,656 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,657 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,658 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,658 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,659 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,659 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,660 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,661 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,661 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,662 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,662 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,666 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,666 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,667 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,668 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,668 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:17,669 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-16 01:02:17,669 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:17,669 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:17,669 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:17,669 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:17,670 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:17,670 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:17,670 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:17,670 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:17,671 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,683 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-16 01:02:17,684 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 01:02:17,685 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 367 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-10-16 01:02:17,685 INFO L82 GeneralOperation]: Start removeDead. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,686 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,687 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:17,687 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,687 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,687 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-16 01:02:17,698 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-16 01:02:17,698 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 01:02:17,700 INFO L80 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 150 events. 15/150 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 399 event pairs, 0 based on Foata normal form. 0/120 useless extension candidates. Maximal degree in co-relation 164. Up to 16 conditions per place. [2020-10-16 01:02:17,706 INFO L117 LiptonReduction]: Number of co-enabled transitions 5040 [2020-10-16 01:02:19,290 INFO L132 LiptonReduction]: Checked pairs total: 10655 [2020-10-16 01:02:19,290 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-16 01:02:19,290 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 1603 [2020-10-16 01:02:19,292 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:02:19,292 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:19,292 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:19,292 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:19,292 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:19,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:19,292 INFO L82 PathProgramCache]: Analyzing trace with hash 27336756, now seen corresponding path program 1 times [2020-10-16 01:02:19,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:19,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89448008] [2020-10-16 01:02:19,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:19,307 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 01:02:19,308 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89448008] [2020-10-16 01:02:19,308 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:19,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:19,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842312426] [2020-10-16 01:02:19,309 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:19,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:19,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:19,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:19,310 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 67 out of 161 [2020-10-16 01:02:19,310 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 163 flow. Second operand 3 states. [2020-10-16 01:02:19,311 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:19,311 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 67 of 161 [2020-10-16 01:02:19,311 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:31,036 INFO L129 PetriNetUnfolder]: 57279/76967 cut-off events. [2020-10-16 01:02:31,037 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-16 01:02:31,461 INFO L80 FinitePrefix]: Finished finitePrefix Result has 148622 conditions, 76967 events. 57279/76967 cut-off events. For 77/77 co-relation queries the response was YES. Maximal size of possible extension queue 6100. Compared 551339 event pairs, 41027 based on Foata normal form. 14338/67002 useless extension candidates. Maximal degree in co-relation 148548. Up to 71156 conditions per place. [2020-10-16 01:02:31,906 INFO L132 encePairwiseOnDemand]: 142/161 looper letters, 28 selfloop transitions, 8 changer transitions 0/53 dead transitions. [2020-10-16 01:02:31,906 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 53 transitions, 255 flow [2020-10-16 01:02:31,907 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:31,907 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:31,908 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 252 transitions. [2020-10-16 01:02:31,908 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5217391304347826 [2020-10-16 01:02:31,908 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 252 transitions. [2020-10-16 01:02:31,908 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 252 transitions. [2020-10-16 01:02:31,909 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:31,909 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 252 transitions. [2020-10-16 01:02:31,909 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:31,910 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:31,910 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:31,911 INFO L185 Difference]: Start difference. First operand has 55 places, 43 transitions, 163 flow. Second operand 3 states and 252 transitions. [2020-10-16 01:02:31,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 53 transitions, 255 flow [2020-10-16 01:02:31,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 53 transitions, 213 flow, removed 21 selfloop flow, removed 0 redundant places. [2020-10-16 01:02:31,913 INFO L241 Difference]: Finished difference. Result has 57 places, 46 transitions, 179 flow [2020-10-16 01:02:31,913 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=113, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=57, PETRI_TRANSITIONS=46} [2020-10-16 01:02:31,913 INFO L342 CegarLoopForPetriNet]: 55 programPoint places, 2 predicate places. [2020-10-16 01:02:31,914 INFO L481 AbstractCegarLoop]: Abstraction has has 57 places, 46 transitions, 179 flow [2020-10-16 01:02:31,914 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:31,914 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:31,914 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:31,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-16 01:02:31,914 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:31,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:31,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1512538858, now seen corresponding path program 1 times [2020-10-16 01:02:31,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:31,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736609069] [2020-10-16 01:02:31,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:31,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:02:31,940 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736609069] [2020-10-16 01:02:31,940 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:31,940 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:02:31,941 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1591469132] [2020-10-16 01:02:31,941 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:31,941 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:31,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:31,942 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 161 [2020-10-16 01:02:31,942 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 46 transitions, 179 flow. Second operand 3 states. [2020-10-16 01:02:31,943 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:31,943 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 161 [2020-10-16 01:02:31,943 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:02:34,583 INFO L129 PetriNetUnfolder]: 18292/28630 cut-off events. [2020-10-16 01:02:34,584 INFO L130 PetriNetUnfolder]: For 23575/48834 co-relation queries the response was YES. [2020-10-16 01:02:34,769 INFO L80 FinitePrefix]: Finished finitePrefix Result has 59329 conditions, 28630 events. 18292/28630 cut-off events. For 23575/48834 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 233872 event pairs, 5957 based on Foata normal form. 17156/43274 useless extension candidates. Maximal degree in co-relation 59305. Up to 18401 conditions per place. [2020-10-16 01:02:34,975 INFO L132 encePairwiseOnDemand]: 147/161 looper letters, 22 selfloop transitions, 7 changer transitions 0/53 dead transitions. [2020-10-16 01:02:34,976 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 53 transitions, 237 flow [2020-10-16 01:02:34,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:02:34,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:02:34,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 267 transitions. [2020-10-16 01:02:34,979 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5527950310559007 [2020-10-16 01:02:34,979 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 267 transitions. [2020-10-16 01:02:34,979 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 267 transitions. [2020-10-16 01:02:34,980 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:02:34,980 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 267 transitions. [2020-10-16 01:02:34,981 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:02:34,981 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:02:34,982 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:02:34,982 INFO L185 Difference]: Start difference. First operand has 57 places, 46 transitions, 179 flow. Second operand 3 states and 267 transitions. [2020-10-16 01:02:34,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 53 transitions, 237 flow [2020-10-16 01:02:35,007 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 53 transitions, 229 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:02:35,009 INFO L241 Difference]: Finished difference. Result has 52 places, 46 transitions, 192 flow [2020-10-16 01:02:35,009 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=161, PETRI_DIFFERENCE_MINUEND_FLOW=143, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=192, PETRI_PLACES=52, PETRI_TRANSITIONS=46} [2020-10-16 01:02:35,009 INFO L342 CegarLoopForPetriNet]: 55 programPoint places, -3 predicate places. [2020-10-16 01:02:35,009 INFO L481 AbstractCegarLoop]: Abstraction has has 52 places, 46 transitions, 192 flow [2020-10-16 01:02:35,010 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:02:35,010 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:35,010 INFO L255 CegarLoopForPetriNet]: trace histogram [8, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:02:35,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-16 01:02:35,010 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:35,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:35,010 INFO L82 PathProgramCache]: Analyzing trace with hash 1114819578, now seen corresponding path program 1 times [2020-10-16 01:02:35,011 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:35,011 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [674758537] [2020-10-16 01:02:35,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:35,019 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:35,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:02:35,025 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:02:35,031 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:02:35,031 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:02:35,031 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-16 01:02:35,032 WARN L371 ceAbstractionStarter]: 7 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:02:35,032 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 8 thread instances. [2020-10-16 01:02:35,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,040 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,040 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,041 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,041 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,042 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,043 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,044 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,045 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,046 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,046 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,047 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,048 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,048 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,049 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,049 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,052 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,053 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,053 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,057 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,057 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,058 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,059 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,060 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,060 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,062 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,062 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,063 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,063 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,064 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,065 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of8ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,065 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of8ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:02:35,066 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-16 01:02:35,066 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:02:35,066 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:02:35,066 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:02:35,066 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:02:35,067 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:02:35,067 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:02:35,067 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:02:35,067 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:02:35,068 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,081 INFO L129 PetriNetUnfolder]: 17/169 cut-off events. [2020-10-16 01:02:35,081 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 01:02:35,082 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 169 events. 17/169 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 423 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 193. Up to 18 conditions per place. [2020-10-16 01:02:35,083 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,084 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:02:35,084 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,084 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,084 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 106 places, 98 transitions, 292 flow [2020-10-16 01:02:35,097 INFO L129 PetriNetUnfolder]: 17/169 cut-off events. [2020-10-16 01:02:35,097 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 01:02:35,099 INFO L80 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 169 events. 17/169 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 442 event pairs, 0 based on Foata normal form. 0/135 useless extension candidates. Maximal degree in co-relation 193. Up to 18 conditions per place. [2020-10-16 01:02:35,107 INFO L117 LiptonReduction]: Number of co-enabled transitions 6480 [2020-10-16 01:02:37,540 INFO L132 LiptonReduction]: Checked pairs total: 18368 [2020-10-16 01:02:37,541 INFO L134 LiptonReduction]: Total number of compositions: 87 [2020-10-16 01:02:37,541 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2457 [2020-10-16 01:02:37,542 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:02:37,542 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:02:37,542 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:02:37,542 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:02:37,543 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:02:37,543 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:02:37,543 INFO L82 PathProgramCache]: Analyzing trace with hash 33195023, now seen corresponding path program 1 times [2020-10-16 01:02:37,543 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:02:37,543 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [625845059] [2020-10-16 01:02:37,544 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:02:37,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:02:37,563 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 01:02:37,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [625845059] [2020-10-16 01:02:37,563 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:02:37,563 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:02:37,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459368793] [2020-10-16 01:02:37,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:02:37,564 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:02:37,564 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:02:37,565 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:02:37,565 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 74 out of 185 [2020-10-16 01:02:37,566 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 52 transitions, 200 flow. Second operand 3 states. [2020-10-16 01:02:37,566 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:02:37,566 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 74 of 185 [2020-10-16 01:02:37,566 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:04:05,274 INFO L129 PetriNetUnfolder]: 283546/365244 cut-off events. [2020-10-16 01:04:05,275 INFO L130 PetriNetUnfolder]: For 112/112 co-relation queries the response was YES. [2020-10-16 01:04:07,901 INFO L80 FinitePrefix]: Finished finitePrefix Result has 708083 conditions, 365244 events. 283546/365244 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 24248. Compared 2695219 event pairs, 212677 based on Foata normal form. 59245/309146 useless extension candidates. Maximal degree in co-relation 707995. Up to 341753 conditions per place. [2020-10-16 01:04:11,755 INFO L132 encePairwiseOnDemand]: 160/185 looper letters, 32 selfloop transitions, 9 changer transitions 0/60 dead transitions. [2020-10-16 01:04:11,755 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 60 transitions, 298 flow [2020-10-16 01:04:11,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:04:11,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:04:11,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 287 transitions. [2020-10-16 01:04:11,757 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5171171171171172 [2020-10-16 01:04:11,757 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 287 transitions. [2020-10-16 01:04:11,757 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 287 transitions. [2020-10-16 01:04:11,757 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:04:11,757 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 287 transitions. [2020-10-16 01:04:11,758 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:04:11,760 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:04:11,760 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:04:11,760 INFO L185 Difference]: Start difference. First operand has 62 places, 52 transitions, 200 flow. Second operand 3 states and 287 transitions. [2020-10-16 01:04:11,760 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 60 transitions, 298 flow [2020-10-16 01:04:11,761 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 60 transitions, 242 flow, removed 28 selfloop flow, removed 0 redundant places. [2020-10-16 01:04:11,763 INFO L241 Difference]: Finished difference. Result has 64 places, 52 transitions, 203 flow [2020-10-16 01:04:11,763 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=128, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=203, PETRI_PLACES=64, PETRI_TRANSITIONS=52} [2020-10-16 01:04:11,763 INFO L342 CegarLoopForPetriNet]: 62 programPoint places, 2 predicate places. [2020-10-16 01:04:11,763 INFO L481 AbstractCegarLoop]: Abstraction has has 64 places, 52 transitions, 203 flow [2020-10-16 01:04:11,763 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:04:11,763 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:11,763 INFO L255 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:04:11,764 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-16 01:04:11,764 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:04:11,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:11,764 INFO L82 PathProgramCache]: Analyzing trace with hash -1989496724, now seen corresponding path program 1 times [2020-10-16 01:04:11,764 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:11,765 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [748176143] [2020-10-16 01:04:11,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:11,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:04:11,784 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-16 01:04:11,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [748176143] [2020-10-16 01:04:11,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:04:11,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-16 01:04:11,785 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496592738] [2020-10-16 01:04:11,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:04:11,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:04:11,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:04:11,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:04:11,789 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 185 [2020-10-16 01:04:11,789 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 203 flow. Second operand 3 states. [2020-10-16 01:04:11,790 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:04:11,790 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 185 [2020-10-16 01:04:11,790 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2020-10-16 01:04:33,002 INFO L129 PetriNetUnfolder]: 77648/116875 cut-off events. [2020-10-16 01:04:33,002 INFO L130 PetriNetUnfolder]: For 113583/275053 co-relation queries the response was YES. [2020-10-16 01:04:33,785 INFO L80 FinitePrefix]: Finished finitePrefix Result has 240066 conditions, 116875 events. 77648/116875 cut-off events. For 113583/275053 co-relation queries the response was YES. Maximal size of possible extension queue 8144. Compared 1056557 event pairs, 29560 based on Foata normal form. 77138/182813 useless extension candidates. Maximal degree in co-relation 240041. Up to 81857 conditions per place. [2020-10-16 01:04:34,520 INFO L132 encePairwiseOnDemand]: 169/185 looper letters, 25 selfloop transitions, 8 changer transitions 0/60 dead transitions. [2020-10-16 01:04:34,520 INFO L138 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 60 transitions, 269 flow [2020-10-16 01:04:34,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-16 01:04:34,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-10-16 01:04:34,522 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2020-10-16 01:04:34,522 INFO L552 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2020-10-16 01:04:34,522 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2020-10-16 01:04:34,522 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2020-10-16 01:04:34,523 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2020-10-16 01:04:34,523 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2020-10-16 01:04:34,524 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 4 states. [2020-10-16 01:04:34,525 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result 4 states. [2020-10-16 01:04:34,525 INFO L81 ComplementDD]: Finished complementDD. Result 4 states. [2020-10-16 01:04:34,525 INFO L185 Difference]: Start difference. First operand has 64 places, 52 transitions, 203 flow. Second operand 3 states and 296 transitions. [2020-10-16 01:04:34,525 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 60 transitions, 269 flow [2020-10-16 01:04:34,536 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 60 transitions, 260 flow, removed 0 selfloop flow, removed 1 redundant places. [2020-10-16 01:04:34,537 INFO L241 Difference]: Finished difference. Result has 58 places, 52 transitions, 218 flow [2020-10-16 01:04:34,537 INFO L326 CegarLoopForPetriNet]: {PETRI_ALPHABET=185, PETRI_DIFFERENCE_MINUEND_FLOW=162, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=218, PETRI_PLACES=58, PETRI_TRANSITIONS=52} [2020-10-16 01:04:34,537 INFO L342 CegarLoopForPetriNet]: 62 programPoint places, -4 predicate places. [2020-10-16 01:04:34,538 INFO L481 AbstractCegarLoop]: Abstraction has has 58 places, 52 transitions, 218 flow [2020-10-16 01:04:34,538 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-16 01:04:34,538 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:34,538 INFO L255 CegarLoopForPetriNet]: trace histogram [9, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-16 01:04:34,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-16 01:04:34,538 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:04:34,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:34,539 INFO L82 PathProgramCache]: Analyzing trace with hash 1636097969, now seen corresponding path program 1 times [2020-10-16 01:04:34,539 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:34,539 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795360562] [2020-10-16 01:04:34,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:34,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:04:34,548 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:04:34,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-16 01:04:34,554 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-16 01:04:34,564 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-16 01:04:34,564 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-16 01:04:34,567 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-16 01:04:34,568 WARN L371 ceAbstractionStarter]: 8 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-16 01:04:34,568 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 9 thread instances. [2020-10-16 01:04:34,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,577 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,578 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,579 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,580 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,581 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,582 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,583 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,584 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,585 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,585 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,586 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,591 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,592 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,592 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,594 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,594 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,595 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,595 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,596 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,596 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,597 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,597 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,598 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,598 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,601 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,602 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,603 WARN L313 ript$VariableManager]: TermVariabe thr1Thread8of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,603 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread8of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,604 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,605 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread9of9ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,605 WARN L313 ript$VariableManager]: TermVariabe thr1Thread9of9ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-16 01:04:34,606 INFO L253 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2020-10-16 01:04:34,606 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-16 01:04:34,606 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-16 01:04:34,606 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-16 01:04:34,606 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-16 01:04:34,607 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-16 01:04:34,607 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-16 01:04:34,607 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-16 01:04:34,607 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-16 01:04:34,608 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,623 INFO L129 PetriNetUnfolder]: 19/188 cut-off events. [2020-10-16 01:04:34,624 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-10-16 01:04:34,625 INFO L80 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 188 events. 19/188 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 461 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 223. Up to 20 conditions per place. [2020-10-16 01:04:34,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,627 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,627 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-16 01:04:34,627 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,627 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,628 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 117 places, 108 transitions, 333 flow [2020-10-16 01:04:34,643 INFO L129 PetriNetUnfolder]: 19/188 cut-off events. [2020-10-16 01:04:34,643 INFO L130 PetriNetUnfolder]: For 156/156 co-relation queries the response was YES. [2020-10-16 01:04:34,645 INFO L80 FinitePrefix]: Finished finitePrefix Result has 261 conditions, 188 events. 19/188 cut-off events. For 156/156 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 493 event pairs, 0 based on Foata normal form. 0/150 useless extension candidates. Maximal degree in co-relation 223. Up to 20 conditions per place. [2020-10-16 01:04:34,655 INFO L117 LiptonReduction]: Number of co-enabled transitions 8100 [2020-10-16 01:04:37,227 INFO L132 LiptonReduction]: Checked pairs total: 23018 [2020-10-16 01:04:37,228 INFO L134 LiptonReduction]: Total number of compositions: 96 [2020-10-16 01:04:37,228 INFO L182 CegarLoopForPetriNet]: Time needed for LBE in milliseconds: 2601 [2020-10-16 01:04:37,229 INFO L129 PetriNetUnfolder]: 0/4 cut-off events. [2020-10-16 01:04:37,229 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-16 01:04:37,229 INFO L247 CegarLoopForPetriNet]: Found error trace [2020-10-16 01:04:37,229 INFO L255 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2020-10-16 01:04:37,230 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-16 01:04:37,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-16 01:04:37,230 INFO L82 PathProgramCache]: Analyzing trace with hash 39858408, now seen corresponding path program 1 times [2020-10-16 01:04:37,230 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-16 01:04:37,231 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [581612261] [2020-10-16 01:04:37,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-16 01:04:37,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-16 01:04:37,259 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 01:04:37,259 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [581612261] [2020-10-16 01:04:37,259 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-16 01:04:37,259 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-16 01:04:37,260 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [569607076] [2020-10-16 01:04:37,260 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-16 01:04:37,260 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-16 01:04:37,260 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-16 01:04:37,260 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-16 01:04:37,261 INFO L507 CegarLoopForPetriNet]: Number of universal loopers: 77 out of 204 [2020-10-16 01:04:37,262 INFO L92 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 58 transitions, 233 flow. Second operand 3 states. [2020-10-16 01:04:37,262 INFO L101 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2020-10-16 01:04:37,262 INFO L102 encePairwiseOnDemand]: Number of universal subtrahend loopers: 77 of 204 [2020-10-16 01:04:37,262 INFO L71 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... Cannot interrupt operation gracefully because timeout expired. Forcing shutdown