/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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-7bb8cbd [2020-10-15 17:57:56,423 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 17:57:56,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 17:57:56,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 17:57:56,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 17:57:56,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 17:57:56,452 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 17:57:56,454 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 17:57:56,456 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 17:57:56,456 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 17:57:56,457 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 17:57:56,458 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 17:57:56,459 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 17:57:56,460 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 17:57:56,461 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 17:57:56,462 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 17:57:56,463 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 17:57:56,463 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 17:57:56,465 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 17:57:56,467 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 17:57:56,469 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 17:57:56,470 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 17:57:56,471 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 17:57:56,472 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 17:57:56,475 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-10-15 17:57:56,482 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 17:57:56,483 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 17:57:56,484 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 17:57:56,484 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-15 17:57:56,512 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 17:57:56,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 17:57:56,513 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 17:57:56,514 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 17:57:56,514 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 17:57:56,514 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 17:57:56,514 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 17:57:56,514 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 17:57:56,514 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 17:57:56,515 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 17:57:56,515 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 17:57:56,515 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 17:57:56,515 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 17:57:56,515 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 17:57:56,516 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 17:57:56,516 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 17:57:56,516 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 17:57:56,516 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 17:57:56,516 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 17:57:56,516 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 17:57:56,517 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 17:57:56,517 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 17:57:56,517 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 17:57:56,517 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 17:57:56,517 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 17:57:56,518 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 17:57:56,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 17:57:56,518 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 17:57:56,518 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 17:57:56,518 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-10-15 17:57:56,834 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 17:57:56,852 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 17:57:56,856 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 17:57:56,858 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 17:57:56,858 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 17:57:56,859 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-15 17:57:56,935 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2ac3fb7/fe9eb22efcc249378a1ebc8bdab81eda/FLAG684e1c055 [2020-10-15 17:57:57,490 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 17:57:57,490 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-ext/46_monabsex2_vs.i [2020-10-15 17:57:57,501 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2ac3fb7/fe9eb22efcc249378a1ebc8bdab81eda/FLAG684e1c055 [2020-10-15 17:57:57,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ee2ac3fb7/fe9eb22efcc249378a1ebc8bdab81eda [2020-10-15 17:57:57,761 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 17:57:57,763 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-15 17:57:57,764 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 17:57:57,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 17:57:57,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 17:57:57,768 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:57:57" (1/1) ... [2020-10-15 17:57:57,771 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e30eb54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:57, skipping insertion in model container [2020-10-15 17:57:57,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 05:57:57" (1/1) ... [2020-10-15 17:57:57,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 17:57:57,829 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 17:57:58,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 17:57:58,247 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 17:57:58,322 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 17:57:58,399 INFO L208 MainTranslator]: Completed translation [2020-10-15 17:57:58,400 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58 WrapperNode [2020-10-15 17:57:58,400 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 17:57:58,401 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-15 17:57:58,401 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-15 17:57:58,402 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-15 17:57:58,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,425 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-15 17:57:58,446 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 17:57:58,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 17:57:58,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 17:57:58,456 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,457 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,459 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,459 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,464 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,468 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,470 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (1/1) ... [2020-10-15 17:57:58,473 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 17:57:58,473 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 17:57:58,473 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 17:57:58,473 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 17:57:58,474 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (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 [2020-10-15 17:57:58,556 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2020-10-15 17:57:58,557 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2020-10-15 17:57:58,557 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-15 17:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-15 17:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-15 17:57:58,558 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 17:57:58,558 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 17:57:58,560 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-10-15 17:57:58,870 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 17:57:58,870 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-15 17:57:58,872 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:57:58 BoogieIcfgContainer [2020-10-15 17:57:58,872 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 17:57:58,873 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 17:57:58,873 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 17:57:58,877 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 17:57:58,877 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 05:57:57" (1/3) ... [2020-10-15 17:57:58,878 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a59cf3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:57:58, skipping insertion in model container [2020-10-15 17:57:58,878 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 05:57:58" (2/3) ... [2020-10-15 17:57:58,879 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3a59cf3e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 05:57:58, skipping insertion in model container [2020-10-15 17:57:58,879 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 05:57:58" (3/3) ... [2020-10-15 17:57:58,880 INFO L111 eAbstractionObserver]: Analyzing ICFG 46_monabsex2_vs.i [2020-10-15 17:57:58,892 WARN L153 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-10-15 17:57:58,892 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-15 17:57:58,900 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 17:57:58,901 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-10-15 17:57:58,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,923 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,924 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,925 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,928 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,929 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,929 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:57:58,949 INFO L253 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-10-15 17:57:58,970 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:57:58,971 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:57:58,971 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:57:58,971 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:57:58,971 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:57:58,971 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:57:58,971 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:57:58,972 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:57:58,981 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:57:58,983 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-15 17:57:58,986 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 29 places, 28 transitions, 61 flow [2020-10-15 17:57:58,987 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 29 places, 28 transitions, 61 flow [2020-10-15 17:57:59,015 INFO L129 PetriNetUnfolder]: 3/36 cut-off events. [2020-10-15 17:57:59,015 INFO L130 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2020-10-15 17:57:59,019 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. [2020-10-15 17:57:59,021 INFO L117 LiptonReduction]: Number of co-enabled transitions 180 [2020-10-15 17:57:59,530 INFO L132 LiptonReduction]: Checked pairs total: 146 [2020-10-15 17:57:59,530 INFO L134 LiptonReduction]: Total number of compositions: 24 [2020-10-15 17:57:59,537 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 11 places, 8 transitions, 21 flow [2020-10-15 17:57:59,547 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 19 states. [2020-10-15 17:57:59,549 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-15 17:57:59,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:57:59,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:57:59,556 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:57:59,557 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:57:59,562 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:57:59,563 INFO L82 PathProgramCache]: Analyzing trace with hash 4107967, now seen corresponding path program 1 times [2020-10-15 17:57:59,579 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:57:59,580 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [563352249] [2020-10-15 17:57:59,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:57:59,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:57:59,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:57:59,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [563352249] [2020-10-15 17:57:59,865 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:57:59,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:57:59,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1263430306] [2020-10-15 17:57:59,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:57:59,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:57:59,882 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:57:59,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:57:59,885 INFO L87 Difference]: Start difference. First operand 19 states. Second operand 3 states. [2020-10-15 17:57:59,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:57:59,900 INFO L93 Difference]: Finished difference Result 11 states and 13 transitions. [2020-10-15 17:57:59,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:57:59,902 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:57:59,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:57:59,912 INFO L225 Difference]: With dead ends: 11 [2020-10-15 17:57:59,912 INFO L226 Difference]: Without dead ends: 11 [2020-10-15 17:57:59,914 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:57:59,932 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11 states. [2020-10-15 17:57:59,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11 to 11. [2020-10-15 17:57:59,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2020-10-15 17:57:59,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 13 transitions. [2020-10-15 17:57:59,949 INFO L78 Accepts]: Start accepts. Automaton has 11 states and 13 transitions. Word has length 4 [2020-10-15 17:57:59,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:57:59,950 INFO L481 AbstractCegarLoop]: Abstraction has 11 states and 13 transitions. [2020-10-15 17:57:59,950 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:57:59,950 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states and 13 transitions. [2020-10-15 17:57:59,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-15 17:57:59,951 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:57:59,951 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1] [2020-10-15 17:57:59,951 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 17:57:59,952 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:57:59,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:57:59,952 INFO L82 PathProgramCache]: Analyzing trace with hash -347254361, now seen corresponding path program 1 times [2020-10-15 17:57:59,952 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:57:59,953 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437469959] [2020-10-15 17:57:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:57:59,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:57:59,975 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:57:59,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:57:59,986 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:00,008 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:00,009 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:00,010 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 17:58:00,011 WARN L371 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:00,012 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2020-10-15 17:58:00,021 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,022 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,022 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,023 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,024 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,024 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,025 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,026 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,026 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,028 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,029 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of2ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,029 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of2ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,033 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-10-15 17:58:00,034 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:00,034 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:00,034 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:00,034 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:00,035 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:00,035 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:00,035 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:00,035 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:00,037 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:00,038 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-15 17:58:00,038 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 40 places, 38 transitions, 88 flow [2020-10-15 17:58:00,038 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 40 places, 38 transitions, 88 flow [2020-10-15 17:58:00,053 INFO L129 PetriNetUnfolder]: 5/55 cut-off events. [2020-10-15 17:58:00,053 INFO L130 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2020-10-15 17:58:00,055 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. [2020-10-15 17:58:00,078 INFO L117 LiptonReduction]: Number of co-enabled transitions 540 [2020-10-15 17:58:00,570 INFO L132 LiptonReduction]: Checked pairs total: 955 [2020-10-15 17:58:00,570 INFO L134 LiptonReduction]: Total number of compositions: 31 [2020-10-15 17:58:00,570 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 20 places, 16 transitions, 44 flow [2020-10-15 17:58:00,579 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 149 states. [2020-10-15 17:58:00,579 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states. [2020-10-15 17:58:00,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:58:00,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:00,580 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:58:00,580 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:58:00,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:00,581 INFO L82 PathProgramCache]: Analyzing trace with hash 6531966, now seen corresponding path program 1 times [2020-10-15 17:58:00,581 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:00,581 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034474920] [2020-10-15 17:58:00,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:00,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:00,648 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:00,649 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034474920] [2020-10-15 17:58:00,650 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:00,650 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:58:00,650 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1110901448] [2020-10-15 17:58:00,650 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:00,650 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:00,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:00,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:00,651 INFO L87 Difference]: Start difference. First operand 149 states. Second operand 3 states. [2020-10-15 17:58:00,704 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:00,704 INFO L93 Difference]: Finished difference Result 87 states and 182 transitions. [2020-10-15 17:58:00,705 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:00,705 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:58:00,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:00,708 INFO L225 Difference]: With dead ends: 87 [2020-10-15 17:58:00,708 INFO L226 Difference]: Without dead ends: 87 [2020-10-15 17:58:00,708 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:00,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-10-15 17:58:00,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-10-15 17:58:00,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-10-15 17:58:00,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 182 transitions. [2020-10-15 17:58:00,724 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 182 transitions. Word has length 4 [2020-10-15 17:58:00,725 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:00,725 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 182 transitions. [2020-10-15 17:58:00,725 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:00,725 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 182 transitions. [2020-10-15 17:58:00,726 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-15 17:58:00,726 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:00,726 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1] [2020-10-15 17:58:00,726 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 17:58:00,727 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:58:00,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:00,727 INFO L82 PathProgramCache]: Analyzing trace with hash 83161709, now seen corresponding path program 1 times [2020-10-15 17:58:00,727 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:00,728 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391280083] [2020-10-15 17:58:00,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:00,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:00,743 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:00,754 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:00,759 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:00,760 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:00,760 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 17:58:00,760 WARN L371 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:00,762 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2020-10-15 17:58:00,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,770 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,770 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,771 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,771 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,772 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,773 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of3ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of3ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:00,779 INFO L253 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2020-10-15 17:58:00,779 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:00,779 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:00,779 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:00,780 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:00,780 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:00,780 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:00,780 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:00,780 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:00,782 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:00,782 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-15 17:58:00,782 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 51 places, 48 transitions, 117 flow [2020-10-15 17:58:00,783 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 51 places, 48 transitions, 117 flow [2020-10-15 17:58:00,798 INFO L129 PetriNetUnfolder]: 7/74 cut-off events. [2020-10-15 17:58:00,799 INFO L130 PetriNetUnfolder]: For 7/7 co-relation queries the response was YES. [2020-10-15 17:58:00,800 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. [2020-10-15 17:58:00,802 INFO L117 LiptonReduction]: Number of co-enabled transitions 1080 [2020-10-15 17:58:01,563 INFO L132 LiptonReduction]: Checked pairs total: 2823 [2020-10-15 17:58:01,563 INFO L134 LiptonReduction]: Total number of compositions: 42 [2020-10-15 17:58:01,564 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 27 places, 23 transitions, 67 flow [2020-10-15 17:58:01,608 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 749 states. [2020-10-15 17:58:01,608 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states. [2020-10-15 17:58:01,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:58:01,609 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:01,609 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:58:01,609 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:58:01,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 9457192, now seen corresponding path program 1 times [2020-10-15 17:58:01,610 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:01,610 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [851451161] [2020-10-15 17:58:01,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:01,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:01,641 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:01,642 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [851451161] [2020-10-15 17:58:01,642 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:01,642 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:58:01,642 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641499762] [2020-10-15 17:58:01,643 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:01,643 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:01,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:01,644 INFO L87 Difference]: Start difference. First operand 749 states. Second operand 3 states. [2020-10-15 17:58:01,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:01,686 INFO L93 Difference]: Finished difference Result 421 states and 1176 transitions. [2020-10-15 17:58:01,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:01,687 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:58:01,687 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:01,696 INFO L225 Difference]: With dead ends: 421 [2020-10-15 17:58:01,697 INFO L226 Difference]: Without dead ends: 421 [2020-10-15 17:58:01,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:01,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 421 states. [2020-10-15 17:58:01,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 421 to 421. [2020-10-15 17:58:01,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 421 states. [2020-10-15 17:58:01,777 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 421 states to 421 states and 1176 transitions. [2020-10-15 17:58:01,777 INFO L78 Accepts]: Start accepts. Automaton has 421 states and 1176 transitions. Word has length 4 [2020-10-15 17:58:01,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:01,778 INFO L481 AbstractCegarLoop]: Abstraction has 421 states and 1176 transitions. [2020-10-15 17:58:01,778 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:01,778 INFO L276 IsEmpty]: Start isEmpty. Operand 421 states and 1176 transitions. [2020-10-15 17:58:01,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:58:01,781 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:01,781 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:01,781 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 17:58:01,782 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:58:01,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:01,782 INFO L82 PathProgramCache]: Analyzing trace with hash -1631208808, now seen corresponding path program 1 times [2020-10-15 17:58:01,782 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:01,783 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849760053] [2020-10-15 17:58:01,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:01,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:01,850 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:01,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849760053] [2020-10-15 17:58:01,851 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:01,851 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:58:01,851 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1006261889] [2020-10-15 17:58:01,852 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:01,852 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:01,852 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:01,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:01,853 INFO L87 Difference]: Start difference. First operand 421 states and 1176 transitions. Second operand 3 states. [2020-10-15 17:58:01,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:01,876 INFO L93 Difference]: Finished difference Result 319 states and 912 transitions. [2020-10-15 17:58:01,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:01,877 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 17:58:01,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:01,881 INFO L225 Difference]: With dead ends: 319 [2020-10-15 17:58:01,881 INFO L226 Difference]: Without dead ends: 319 [2020-10-15 17:58:01,882 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:01,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 319 states. [2020-10-15 17:58:01,894 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 319 to 319. [2020-10-15 17:58:01,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 319 states. [2020-10-15 17:58:01,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 319 states to 319 states and 912 transitions. [2020-10-15 17:58:01,897 INFO L78 Accepts]: Start accepts. Automaton has 319 states and 912 transitions. Word has length 10 [2020-10-15 17:58:01,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:01,897 INFO L481 AbstractCegarLoop]: Abstraction has 319 states and 912 transitions. [2020-10-15 17:58:01,897 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:01,898 INFO L276 IsEmpty]: Start isEmpty. Operand 319 states and 912 transitions. [2020-10-15 17:58:01,899 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-15 17:58:01,899 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:01,899 INFO L422 BasicCegarLoop]: trace histogram [4, 3, 1, 1, 1, 1, 1] [2020-10-15 17:58:01,899 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 17:58:01,900 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 17:58:01,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:01,900 INFO L82 PathProgramCache]: Analyzing trace with hash -274399323, now seen corresponding path program 1 times [2020-10-15 17:58:01,900 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:01,901 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835864746] [2020-10-15 17:58:01,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:01,913 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:01,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:01,924 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:01,929 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:01,930 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:01,930 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 17:58:01,931 WARN L371 ceAbstractionStarter]: 3 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:01,931 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 4 thread instances. [2020-10-15 17:58:01,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,937 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,937 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,938 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,938 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,939 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,939 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,940 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,940 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,941 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,942 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,942 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,943 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,943 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,952 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,953 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,953 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,958 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,958 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,960 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of4ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,960 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of4ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:01,962 INFO L253 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2020-10-15 17:58:01,962 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:01,962 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:01,962 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:01,962 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:01,962 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:01,963 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:01,963 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:01,963 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:01,965 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:01,965 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-15 17:58:01,965 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 62 places, 58 transitions, 148 flow [2020-10-15 17:58:01,965 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 62 places, 58 transitions, 148 flow [2020-10-15 17:58:01,983 INFO L129 PetriNetUnfolder]: 9/93 cut-off events. [2020-10-15 17:58:01,983 INFO L130 PetriNetUnfolder]: For 16/16 co-relation queries the response was YES. [2020-10-15 17:58:01,984 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. [2020-10-15 17:58:01,987 INFO L117 LiptonReduction]: Number of co-enabled transitions 1800 [2020-10-15 17:58:03,026 INFO L132 LiptonReduction]: Checked pairs total: 4061 [2020-10-15 17:58:03,026 INFO L134 LiptonReduction]: Total number of compositions: 49 [2020-10-15 17:58:03,027 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 34 places, 28 transitions, 88 flow [2020-10-15 17:58:03,275 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 3749 states. [2020-10-15 17:58:03,275 INFO L276 IsEmpty]: Start isEmpty. Operand 3749 states. [2020-10-15 17:58:03,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:58:03,275 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:03,276 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:58:03,276 INFO L429 AbstractCegarLoop]: === Iteration 1 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:58:03,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:03,276 INFO L82 PathProgramCache]: Analyzing trace with hash 13119213, now seen corresponding path program 1 times [2020-10-15 17:58:03,277 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:03,277 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616672244] [2020-10-15 17:58:03,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:03,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:03,312 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:03,312 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616672244] [2020-10-15 17:58:03,313 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:03,313 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:58:03,313 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230796263] [2020-10-15 17:58:03,314 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:03,314 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:03,315 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:03,315 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:03,315 INFO L87 Difference]: Start difference. First operand 3749 states. Second operand 3 states. [2020-10-15 17:58:03,399 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:03,399 INFO L93 Difference]: Finished difference Result 2133 states and 7537 transitions. [2020-10-15 17:58:03,400 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:03,400 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:58:03,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:03,423 INFO L225 Difference]: With dead ends: 2133 [2020-10-15 17:58:03,423 INFO L226 Difference]: Without dead ends: 2133 [2020-10-15 17:58:03,424 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:03,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2133 states. [2020-10-15 17:58:03,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2133 to 2133. [2020-10-15 17:58:03,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2133 states. [2020-10-15 17:58:03,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2133 states to 2133 states and 7537 transitions. [2020-10-15 17:58:03,554 INFO L78 Accepts]: Start accepts. Automaton has 2133 states and 7537 transitions. Word has length 4 [2020-10-15 17:58:03,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:03,554 INFO L481 AbstractCegarLoop]: Abstraction has 2133 states and 7537 transitions. [2020-10-15 17:58:03,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:03,554 INFO L276 IsEmpty]: Start isEmpty. Operand 2133 states and 7537 transitions. [2020-10-15 17:58:03,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:58:03,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:03,556 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:03,559 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 17:58:03,560 INFO L429 AbstractCegarLoop]: === Iteration 2 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:58:03,560 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:03,560 INFO L82 PathProgramCache]: Analyzing trace with hash 660270625, now seen corresponding path program 1 times [2020-10-15 17:58:03,560 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:03,561 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1250353967] [2020-10-15 17:58:03,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:03,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:03,613 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-15 17:58:03,614 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1250353967] [2020-10-15 17:58:03,614 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:03,615 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:58:03,616 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1176969528] [2020-10-15 17:58:03,616 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:03,616 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:03,617 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:03,617 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:03,617 INFO L87 Difference]: Start difference. First operand 2133 states and 7537 transitions. Second operand 3 states. [2020-10-15 17:58:03,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:03,660 INFO L93 Difference]: Finished difference Result 1279 states and 4608 transitions. [2020-10-15 17:58:03,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:03,661 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 17:58:03,661 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:03,671 INFO L225 Difference]: With dead ends: 1279 [2020-10-15 17:58:03,671 INFO L226 Difference]: Without dead ends: 1279 [2020-10-15 17:58:03,672 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:03,682 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1279 states. [2020-10-15 17:58:03,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1279 to 1279. [2020-10-15 17:58:03,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1279 states. [2020-10-15 17:58:03,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1279 states to 1279 states and 4608 transitions. [2020-10-15 17:58:03,718 INFO L78 Accepts]: Start accepts. Automaton has 1279 states and 4608 transitions. Word has length 10 [2020-10-15 17:58:03,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:03,718 INFO L481 AbstractCegarLoop]: Abstraction has 1279 states and 4608 transitions. [2020-10-15 17:58:03,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:03,719 INFO L276 IsEmpty]: Start isEmpty. Operand 1279 states and 4608 transitions. [2020-10-15 17:58:03,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-15 17:58:03,721 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:03,722 INFO L422 BasicCegarLoop]: trace histogram [5, 4, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:03,722 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 17:58:03,722 INFO L429 AbstractCegarLoop]: === Iteration 3 === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATION]=== [2020-10-15 17:58:03,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:03,722 INFO L82 PathProgramCache]: Analyzing trace with hash -888053295, now seen corresponding path program 1 times [2020-10-15 17:58:03,723 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:03,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1027100448] [2020-10-15 17:58:03,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:03,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:03,734 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:03,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:03,741 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:03,747 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:03,747 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:03,747 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-15 17:58:03,748 WARN L371 ceAbstractionStarter]: 4 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:03,748 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 5 thread instances. [2020-10-15 17:58:03,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,760 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,760 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,761 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,761 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,762 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,765 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,766 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,766 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,767 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,767 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,768 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,769 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,769 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,773 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,774 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,774 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,775 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,775 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,776 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,776 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,777 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,777 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,778 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of5ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,778 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of5ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:03,780 INFO L253 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2020-10-15 17:58:03,781 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:03,781 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:03,781 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:03,781 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:03,781 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:03,781 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:03,781 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:03,781 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:03,783 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:03,783 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-15 17:58:03,784 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 73 places, 68 transitions, 181 flow [2020-10-15 17:58:03,784 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 73 places, 68 transitions, 181 flow [2020-10-15 17:58:03,802 INFO L129 PetriNetUnfolder]: 11/112 cut-off events. [2020-10-15 17:58:03,802 INFO L130 PetriNetUnfolder]: For 30/30 co-relation queries the response was YES. [2020-10-15 17:58:03,804 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. [2020-10-15 17:58:03,812 INFO L117 LiptonReduction]: Number of co-enabled transitions 2700 [2020-10-15 17:58:05,284 INFO L132 LiptonReduction]: Checked pairs total: 7413 [2020-10-15 17:58:05,285 INFO L134 LiptonReduction]: Total number of compositions: 60 [2020-10-15 17:58:05,285 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 41 places, 35 transitions, 115 flow [2020-10-15 17:58:07,344 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 18749 states. [2020-10-15 17:58:07,344 INFO L276 IsEmpty]: Start isEmpty. Operand 18749 states. [2020-10-15 17:58:07,345 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:58:07,345 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:07,345 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:58:07,345 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]=== [2020-10-15 17:58:07,345 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:07,346 INFO L82 PathProgramCache]: Analyzing trace with hash 17094107, now seen corresponding path program 1 times [2020-10-15 17:58:07,346 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:07,346 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205645205] [2020-10-15 17:58:07,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:07,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:07,401 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:07,402 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205645205] [2020-10-15 17:58:07,402 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:07,402 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:58:07,402 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546902314] [2020-10-15 17:58:07,403 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:07,403 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:07,403 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:07,403 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:07,403 INFO L87 Difference]: Start difference. First operand 18749 states. Second operand 3 states. [2020-10-15 17:58:07,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:07,636 INFO L93 Difference]: Finished difference Result 11059 states and 47649 transitions. [2020-10-15 17:58:07,636 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:07,637 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:58:07,637 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:07,758 INFO L225 Difference]: With dead ends: 11059 [2020-10-15 17:58:07,759 INFO L226 Difference]: Without dead ends: 11059 [2020-10-15 17:58:07,759 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:08,244 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11059 states. [2020-10-15 17:58:08,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11059 to 11059. [2020-10-15 17:58:08,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11059 states. [2020-10-15 17:58:08,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11059 states to 11059 states and 47649 transitions. [2020-10-15 17:58:08,566 INFO L78 Accepts]: Start accepts. Automaton has 11059 states and 47649 transitions. Word has length 4 [2020-10-15 17:58:08,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:08,567 INFO L481 AbstractCegarLoop]: Abstraction has 11059 states and 47649 transitions. [2020-10-15 17:58:08,567 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:08,567 INFO L276 IsEmpty]: Start isEmpty. Operand 11059 states and 47649 transitions. [2020-10-15 17:58:08,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:58:08,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:08,568 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:08,568 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-15 17:58:08,568 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]=== [2020-10-15 17:58:08,568 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:08,568 INFO L82 PathProgramCache]: Analyzing trace with hash 1998237469, now seen corresponding path program 1 times [2020-10-15 17:58:08,569 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:08,569 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1493772178] [2020-10-15 17:58:08,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:08,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:08,591 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-15 17:58:08,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1493772178] [2020-10-15 17:58:08,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:08,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:58:08,592 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1731174482] [2020-10-15 17:58:08,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:08,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:08,593 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:08,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:08,594 INFO L87 Difference]: Start difference. First operand 11059 states and 47649 transitions. Second operand 3 states. [2020-10-15 17:58:08,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:08,845 INFO L93 Difference]: Finished difference Result 5119 states and 22272 transitions. [2020-10-15 17:58:08,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:08,845 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 17:58:08,846 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:08,882 INFO L225 Difference]: With dead ends: 5119 [2020-10-15 17:58:08,883 INFO L226 Difference]: Without dead ends: 5119 [2020-10-15 17:58:08,883 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:08,976 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5119 states. [2020-10-15 17:58:09,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5119 to 5119. [2020-10-15 17:58:09,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5119 states. [2020-10-15 17:58:09,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5119 states to 5119 states and 22272 transitions. [2020-10-15 17:58:09,127 INFO L78 Accepts]: Start accepts. Automaton has 5119 states and 22272 transitions. Word has length 10 [2020-10-15 17:58:09,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:09,128 INFO L481 AbstractCegarLoop]: Abstraction has 5119 states and 22272 transitions. [2020-10-15 17:58:09,128 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:09,128 INFO L276 IsEmpty]: Start isEmpty. Operand 5119 states and 22272 transitions. [2020-10-15 17:58:09,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-15 17:58:09,132 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:09,132 INFO L422 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:09,132 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-15 17:58:09,133 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]=== [2020-10-15 17:58:09,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:09,133 INFO L82 PathProgramCache]: Analyzing trace with hash -1270266075, now seen corresponding path program 1 times [2020-10-15 17:58:09,133 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:09,134 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1132772006] [2020-10-15 17:58:09,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:09,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:09,155 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:09,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:09,168 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:09,178 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:09,178 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:09,179 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-15 17:58:09,179 WARN L371 ceAbstractionStarter]: 5 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:09,180 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 6 thread instances. [2020-10-15 17:58:09,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,190 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,191 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,191 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,192 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,194 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,195 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,196 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,197 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,197 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,198 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,198 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,199 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,200 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,200 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,201 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,201 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,202 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,204 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,205 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,205 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of6ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of6ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:09,208 INFO L253 AbstractCegarLoop]: Starting to check reachability of 8 error locations. [2020-10-15 17:58:09,208 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:09,209 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:09,209 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:09,209 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:09,209 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:09,209 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:09,209 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:09,209 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:09,210 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:09,211 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-15 17:58:09,211 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 84 places, 78 transitions, 216 flow [2020-10-15 17:58:09,212 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 84 places, 78 transitions, 216 flow [2020-10-15 17:58:09,231 INFO L129 PetriNetUnfolder]: 13/131 cut-off events. [2020-10-15 17:58:09,232 INFO L130 PetriNetUnfolder]: For 50/50 co-relation queries the response was YES. [2020-10-15 17:58:09,234 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. [2020-10-15 17:58:09,238 INFO L117 LiptonReduction]: Number of co-enabled transitions 3780 [2020-10-15 17:58:10,721 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification that was a NOOP. DAG size: 29 [2020-10-15 17:58:10,871 INFO L132 LiptonReduction]: Checked pairs total: 8748 [2020-10-15 17:58:10,872 INFO L134 LiptonReduction]: Total number of compositions: 66 [2020-10-15 17:58:10,872 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 48 places, 39 transitions, 138 flow [2020-10-15 17:58:44,825 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 93749 states. [2020-10-15 17:58:44,826 INFO L276 IsEmpty]: Start isEmpty. Operand 93749 states. [2020-10-15 17:58:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 17:58:44,826 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:44,826 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 17:58:44,826 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]=== [2020-10-15 17:58:44,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:44,827 INFO L82 PathProgramCache]: Analyzing trace with hash 22149830, now seen corresponding path program 1 times [2020-10-15 17:58:44,827 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:44,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [767626842] [2020-10-15 17:58:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:44,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:44,867 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:44,868 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [767626842] [2020-10-15 17:58:44,868 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:44,868 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 17:58:44,868 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101228045] [2020-10-15 17:58:44,869 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:44,869 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:44,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:44,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:44,869 INFO L87 Difference]: Start difference. First operand 93749 states. Second operand 3 states. [2020-10-15 17:58:45,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:45,535 INFO L93 Difference]: Finished difference Result 57747 states and 295020 transitions. [2020-10-15 17:58:45,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:45,535 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 17:58:45,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:45,895 INFO L225 Difference]: With dead ends: 57747 [2020-10-15 17:58:45,895 INFO L226 Difference]: Without dead ends: 57747 [2020-10-15 17:58:45,896 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:53,005 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57747 states. [2020-10-15 17:58:54,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57747 to 57747. [2020-10-15 17:58:54,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57747 states. [2020-10-15 17:58:54,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57747 states to 57747 states and 295020 transitions. [2020-10-15 17:58:54,953 INFO L78 Accepts]: Start accepts. Automaton has 57747 states and 295020 transitions. Word has length 4 [2020-10-15 17:58:54,954 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:54,954 INFO L481 AbstractCegarLoop]: Abstraction has 57747 states and 295020 transitions. [2020-10-15 17:58:54,954 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:54,954 INFO L276 IsEmpty]: Start isEmpty. Operand 57747 states and 295020 transitions. [2020-10-15 17:58:54,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-15 17:58:54,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:54,954 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:54,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-15 17:58:54,955 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]=== [2020-10-15 17:58:54,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:54,955 INFO L82 PathProgramCache]: Analyzing trace with hash -1106760830, now seen corresponding path program 1 times [2020-10-15 17:58:54,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:54,955 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [42674579] [2020-10-15 17:58:54,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:54,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 17:58:54,984 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 17:58:54,985 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [42674579] [2020-10-15 17:58:54,985 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 17:58:54,985 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-10-15 17:58:54,986 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [153213276] [2020-10-15 17:58:54,986 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 17:58:54,986 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 17:58:54,986 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 17:58:54,986 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:54,987 INFO L87 Difference]: Start difference. First operand 57747 states and 295020 transitions. Second operand 3 states. [2020-10-15 17:58:55,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 17:58:55,155 INFO L93 Difference]: Finished difference Result 20479 states and 104448 transitions. [2020-10-15 17:58:55,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 17:58:55,156 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-15 17:58:55,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 17:58:55,241 INFO L225 Difference]: With dead ends: 20479 [2020-10-15 17:58:55,241 INFO L226 Difference]: Without dead ends: 20479 [2020-10-15 17:58:55,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 17:58:55,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20479 states. [2020-10-15 17:58:56,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20479 to 20479. [2020-10-15 17:58:56,076 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20479 states. [2020-10-15 17:58:56,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20479 states to 20479 states and 104448 transitions. [2020-10-15 17:58:56,143 INFO L78 Accepts]: Start accepts. Automaton has 20479 states and 104448 transitions. Word has length 10 [2020-10-15 17:58:56,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 17:58:56,144 INFO L481 AbstractCegarLoop]: Abstraction has 20479 states and 104448 transitions. [2020-10-15 17:58:56,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-15 17:58:56,144 INFO L276 IsEmpty]: Start isEmpty. Operand 20479 states and 104448 transitions. [2020-10-15 17:58:56,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-15 17:58:56,150 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 17:58:56,151 INFO L422 BasicCegarLoop]: trace histogram [7, 6, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 17:58:56,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-15 17:58:56,151 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]=== [2020-10-15 17:58:56,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 17:58:56,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2077234539, now seen corresponding path program 1 times [2020-10-15 17:58:56,151 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 17:58:56,152 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [508711543] [2020-10-15 17:58:56,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 17:58:56,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:56,160 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 17:58:56,166 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-15 17:58:56,171 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-15 17:58:56,172 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 17:58:56,172 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-15 17:58:56,172 WARN L371 ceAbstractionStarter]: 6 thread instances were not sufficient, I will increase this number and restart the analysis [2020-10-15 17:58:56,173 INFO L348 ceAbstractionStarter]: Constructing petrified ICFG for 7 thread instances. [2020-10-15 17:58:56,179 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,180 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,180 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,181 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,182 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,183 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,184 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,185 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,186 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,186 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,187 WARN L313 ript$VariableManager]: TermVariabe thr1Thread1of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,187 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread1of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,193 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,193 WARN L313 ript$VariableManager]: TermVariabe thr1Thread2of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,194 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread2of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,202 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,203 WARN L313 ript$VariableManager]: TermVariabe thr1Thread3of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,203 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread3of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,206 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,207 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread4of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,207 WARN L313 ript$VariableManager]: TermVariabe thr1Thread4of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,210 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,211 WARN L313 ript$VariableManager]: TermVariabe thr1Thread5of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,211 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread5of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,212 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,212 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,212 WARN L313 ript$VariableManager]: TermVariabe thr1Thread6of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,212 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread6of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,213 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,214 WARN L313 ript$VariableManager]: TermVariabe |thr1Thread7of7ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,214 WARN L313 ript$VariableManager]: TermVariabe thr1Thread7of7ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-10-15 17:58:56,215 INFO L253 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2020-10-15 17:58:56,215 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-15 17:58:56,215 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-15 17:58:56,215 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-15 17:58:56,216 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 17:58:56,216 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 17:58:56,216 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-15 17:58:56,216 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 17:58:56,216 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 17:58:56,217 INFO L129 etLargeBlockEncoding]: Petri net LBE is using semantic-based independence relation. [2020-10-15 17:58:56,217 INFO L144 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-15 17:58:56,217 INFO L111 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 88 transitions, 253 flow [2020-10-15 17:58:56,218 INFO L71 FinitePrefix]: Start finitePrefix. Operand has 95 places, 88 transitions, 253 flow [2020-10-15 17:58:56,237 INFO L129 PetriNetUnfolder]: 15/150 cut-off events. [2020-10-15 17:58:56,237 INFO L130 PetriNetUnfolder]: For 77/77 co-relation queries the response was YES. [2020-10-15 17:58:56,239 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. [2020-10-15 17:58:56,246 INFO L117 LiptonReduction]: Number of co-enabled transitions 5040 [2020-10-15 17:58:57,797 INFO L132 LiptonReduction]: Checked pairs total: 10587 [2020-10-15 17:58:57,797 INFO L134 LiptonReduction]: Total number of compositions: 73 [2020-10-15 17:58:57,798 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 55 places, 43 transitions, 163 flow [2020-10-15 18:11:58,151 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result 468749 states. [2020-10-15 18:11:58,151 INFO L276 IsEmpty]: Start isEmpty. Operand 468749 states. [2020-10-15 18:11:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-15 18:11:58,152 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 18:11:58,152 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-15 18:11:58,152 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]=== [2020-10-15 18:11:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 18:11:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 27396338, now seen corresponding path program 1 times [2020-10-15 18:11:58,153 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-15 18:11:58,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395372352] [2020-10-15 18:11:58,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 18:11:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 18:11:58,175 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 18:11:58,175 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395372352] [2020-10-15 18:11:58,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 18:11:58,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-10-15 18:11:58,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592402595] [2020-10-15 18:11:58,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-15 18:11:58,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-15 18:11:58,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-15 18:11:58,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-15 18:11:58,177 INFO L87 Difference]: Start difference. First operand 468749 states. Second operand 3 states. [2020-10-15 18:12:00,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 18:12:00,912 INFO L93 Difference]: Finished difference Result 301201 states and 1784490 transitions. [2020-10-15 18:12:00,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-15 18:12:00,913 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-10-15 18:12:00,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 18:12:02,208 INFO L225 Difference]: With dead ends: 301201 [2020-10-15 18:12:02,208 INFO L226 Difference]: Without dead ends: 301201 [2020-10-15 18:12:02,208 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 Received shutdown request...