/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 19:29:48,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 19:29:48,701 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 19:29:48,732 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 19:29:48,732 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 19:29:48,734 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 19:29:48,737 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 19:29:48,739 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 19:29:48,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 19:29:48,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 19:29:48,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 19:29:48,747 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 19:29:48,747 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 19:29:48,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 19:29:48,750 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 19:29:48,752 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 19:29:48,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 19:29:48,753 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 19:29:48,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 19:29:48,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 19:29:48,759 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 19:29:48,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 19:29:48,761 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 19:29:48,762 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 19:29:48,767 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 19:29:48,771 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 19:29:48,771 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 19:29:48,772 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 19:29:48,774 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 19:29:48,796 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 19:29:48,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 19:29:48,797 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 19:29:48,797 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 19:29:48,798 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 19:29:48,798 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 19:29:48,798 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 19:29:48,798 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 19:29:48,798 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 19:29:48,798 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 19:29:48,799 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 19:29:48,799 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:29:48,800 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 19:29:48,800 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 19:29:48,801 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 19:29:48,801 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 19:29:48,801 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2023-01-27 19:29:48,986 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 19:29:49,002 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 19:29:49,005 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 19:29:49,006 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 19:29:49,006 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 19:29:49,007 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-01-27 19:29:49,995 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 19:29:50,232 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 19:29:50,232 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i [2023-01-27 19:29:50,249 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4411e5d/4dda230e8dbc446691ed74bc6783ad3f/FLAG0868c6cf1 [2023-01-27 19:29:50,263 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ed4411e5d/4dda230e8dbc446691ed74bc6783ad3f [2023-01-27 19:29:50,264 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 19:29:50,265 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 19:29:50,267 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 19:29:50,267 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 19:29:50,269 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 19:29:50,269 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,270 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37fba05c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50, skipping insertion in model container [2023-01-27 19:29:50,270 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,275 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 19:29:50,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 19:29:50,620 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-01-27 19:29:50,631 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,632 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,632 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,633 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,646 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:29:50,659 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 19:29:50,689 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/goblint-regression/28-race_reach_91-arrayloop2_racefree.i[47038,47051] [2023-01-27 19:29:50,692 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,692 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,692 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,692 WARN L1562 CHandler]: Possible shadowing of function new [2023-01-27 19:29:50,699 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 19:29:50,762 INFO L208 MainTranslator]: Completed translation [2023-01-27 19:29:50,762 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50 WrapperNode [2023-01-27 19:29:50,762 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 19:29:50,763 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 19:29:50,763 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 19:29:50,764 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 19:29:50,768 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,781 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,797 INFO L138 Inliner]: procedures = 277, calls = 45, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 184 [2023-01-27 19:29:50,798 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 19:29:50,798 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 19:29:50,798 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 19:29:50,798 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 19:29:50,804 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,804 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,807 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,807 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,813 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,816 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,817 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,818 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,820 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 19:29:50,821 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 19:29:50,821 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 19:29:50,821 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 19:29:50,822 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (1/1) ... [2023-01-27 19:29:50,825 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 19:29:50,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:29:50,853 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 19:29:50,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 19:29:50,885 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 19:29:50,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-01-27 19:29:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2023-01-27 19:29:50,887 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2023-01-27 19:29:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 19:29:50,887 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 19:29:50,887 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 19:29:50,888 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 19:29:50,988 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 19:29:50,989 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 19:29:51,294 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 19:29:51,300 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 19:29:51,300 INFO L302 CfgBuilder]: Removed 16 assume(true) statements. [2023-01-27 19:29:51,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:29:51 BoogieIcfgContainer [2023-01-27 19:29:51,304 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 19:29:51,306 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 19:29:51,306 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 19:29:51,308 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 19:29:51,308 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 07:29:50" (1/3) ... [2023-01-27 19:29:51,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f21d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:29:51, skipping insertion in model container [2023-01-27 19:29:51,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 07:29:50" (2/3) ... [2023-01-27 19:29:51,309 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@469f21d4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 07:29:51, skipping insertion in model container [2023-01-27 19:29:51,309 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 07:29:51" (3/3) ... [2023-01-27 19:29:51,310 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_91-arrayloop2_racefree.i [2023-01-27 19:29:51,322 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 19:29:51,322 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-27 19:29:51,323 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 19:29:51,407 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-01-27 19:29:51,439 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 163 places, 184 transitions, 376 flow [2023-01-27 19:29:51,521 INFO L130 PetriNetUnfolder]: 26/200 cut-off events. [2023-01-27 19:29:51,521 INFO L131 PetriNetUnfolder]: For 1/2 co-relation queries the response was YES. [2023-01-27 19:29:51,527 INFO L83 FinitePrefix]: Finished finitePrefix Result has 206 conditions, 200 events. 26/200 cut-off events. For 1/2 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 481 event pairs, 0 based on Foata normal form. 0/170 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-01-27 19:29:51,527 INFO L82 GeneralOperation]: Start removeDead. Operand has 163 places, 184 transitions, 376 flow [2023-01-27 19:29:51,531 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 159 places, 179 transitions, 363 flow [2023-01-27 19:29:51,542 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 19:29:51,551 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 159 places, 179 transitions, 363 flow [2023-01-27 19:29:51,553 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 159 places, 179 transitions, 363 flow [2023-01-27 19:29:51,553 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 179 transitions, 363 flow [2023-01-27 19:29:51,577 INFO L130 PetriNetUnfolder]: 25/195 cut-off events. [2023-01-27 19:29:51,577 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:29:51,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 200 conditions, 195 events. 25/195 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 423 event pairs, 0 based on Foata normal form. 0/165 useless extension candidates. Maximal degree in co-relation 108. Up to 4 conditions per place. [2023-01-27 19:29:51,580 INFO L119 LiptonReduction]: Number of co-enabled transitions 3828 [2023-01-27 19:30:02,004 WARN L222 SmtUtils]: Spent 5.89s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:07,375 WARN L222 SmtUtils]: Spent 5.36s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:13,444 WARN L222 SmtUtils]: Spent 6.07s on a formula simplification that was a NOOP. DAG size: 184 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:19,530 WARN L222 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 172 (called from [L 301] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2023-01-27 19:30:19,755 INFO L134 LiptonReduction]: Checked pairs total: 3796 [2023-01-27 19:30:19,755 INFO L136 LiptonReduction]: Total number of compositions: 174 [2023-01-27 19:30:19,773 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 19:30:19,776 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@1abc0516, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 19:30:19,776 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-27 19:30:19,793 INFO L130 PetriNetUnfolder]: 3/17 cut-off events. [2023-01-27 19:30:19,794 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:30:19,794 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:19,794 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1] [2023-01-27 19:30:19,795 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:19,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:19,798 INFO L85 PathProgramCache]: Analyzing trace with hash -1767713619, now seen corresponding path program 1 times [2023-01-27 19:30:19,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:19,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836913046] [2023-01-27 19:30:19,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:19,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:19,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:20,012 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:20,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836913046] [2023-01-27 19:30:20,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836913046] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:30:20,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:30:20,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 19:30:20,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70698411] [2023-01-27 19:30:20,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:30:20,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:30:20,024 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:20,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:30:20,042 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:30:20,044 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 358 [2023-01-27 19:30:20,048 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 36 transitions, 77 flow. Second operand has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,048 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:20,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 358 [2023-01-27 19:30:20,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:20,187 INFO L130 PetriNetUnfolder]: 48/113 cut-off events. [2023-01-27 19:30:20,187 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:30:20,187 INFO L83 FinitePrefix]: Finished finitePrefix Result has 219 conditions, 113 events. 48/113 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 287 event pairs, 33 based on Foata normal form. 8/93 useless extension candidates. Maximal degree in co-relation 188. Up to 97 conditions per place. [2023-01-27 19:30:20,188 INFO L137 encePairwiseOnDemand]: 345/358 looper letters, 23 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-01-27 19:30:20,188 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 29 transitions, 113 flow [2023-01-27 19:30:20,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:30:20,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:30:20,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 495 transitions. [2023-01-27 19:30:20,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46089385474860334 [2023-01-27 19:30:20,201 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 495 transitions. [2023-01-27 19:30:20,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 495 transitions. [2023-01-27 19:30:20,202 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:20,204 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 495 transitions. [2023-01-27 19:30:20,207 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 165.0) internal successors, (495), 3 states have internal predecessors, (495), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,210 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,211 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,212 INFO L175 Difference]: Start difference. First operand has 25 places, 36 transitions, 77 flow. Second operand 3 states and 495 transitions. [2023-01-27 19:30:20,213 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 29 transitions, 113 flow [2023-01-27 19:30:20,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 26 places, 29 transitions, 113 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 19:30:20,225 INFO L231 Difference]: Finished difference. Result has 27 places, 27 transitions, 69 flow [2023-01-27 19:30:20,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=57, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=69, PETRI_PLACES=27, PETRI_TRANSITIONS=27} [2023-01-27 19:30:20,228 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 2 predicate places. [2023-01-27 19:30:20,228 INFO L495 AbstractCegarLoop]: Abstraction has has 27 places, 27 transitions, 69 flow [2023-01-27 19:30:20,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 154.66666666666666) internal successors, (464), 3 states have internal predecessors, (464), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,229 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:20,229 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:20,229 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 19:30:20,229 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:20,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:20,230 INFO L85 PathProgramCache]: Analyzing trace with hash 549686375, now seen corresponding path program 1 times [2023-01-27 19:30:20,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:20,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1665761020] [2023-01-27 19:30:20,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:20,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:20,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:20,338 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,338 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:20,339 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1665761020] [2023-01-27 19:30:20,339 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1665761020] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 19:30:20,339 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 19:30:20,339 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 19:30:20,339 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563516123] [2023-01-27 19:30:20,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 19:30:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 19:30:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:20,340 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 19:30:20,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 19:30:20,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 358 [2023-01-27 19:30:20,342 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 27 transitions, 69 flow. Second operand has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,342 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:20,342 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 358 [2023-01-27 19:30:20,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:20,600 INFO L130 PetriNetUnfolder]: 48/115 cut-off events. [2023-01-27 19:30:20,601 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-27 19:30:20,601 INFO L83 FinitePrefix]: Finished finitePrefix Result has 230 conditions, 115 events. 48/115 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 288 event pairs, 33 based on Foata normal form. 2/92 useless extension candidates. Maximal degree in co-relation 212. Up to 100 conditions per place. [2023-01-27 19:30:20,601 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-01-27 19:30:20,602 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 28 transitions, 119 flow [2023-01-27 19:30:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 19:30:20,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 19:30:20,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 492 transitions. [2023-01-27 19:30:20,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4581005586592179 [2023-01-27 19:30:20,604 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 492 transitions. [2023-01-27 19:30:20,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 492 transitions. [2023-01-27 19:30:20,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:20,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 492 transitions. [2023-01-27 19:30:20,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 164.0) internal successors, (492), 3 states have internal predecessors, (492), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,608 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 358.0) internal successors, (1432), 4 states have internal predecessors, (1432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,608 INFO L175 Difference]: Start difference. First operand has 27 places, 27 transitions, 69 flow. Second operand 3 states and 492 transitions. [2023-01-27 19:30:20,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 28 transitions, 119 flow [2023-01-27 19:30:20,609 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:20,609 INFO L231 Difference]: Finished difference. Result has 29 places, 28 transitions, 81 flow [2023-01-27 19:30:20,609 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=27, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=29, PETRI_TRANSITIONS=28} [2023-01-27 19:30:20,610 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 4 predicate places. [2023-01-27 19:30:20,610 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 28 transitions, 81 flow [2023-01-27 19:30:20,610 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 158.33333333333334) internal successors, (475), 3 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,610 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:20,611 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:20,611 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 19:30:20,611 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:20,611 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:20,611 INFO L85 PathProgramCache]: Analyzing trace with hash 333836697, now seen corresponding path program 1 times [2023-01-27 19:30:20,611 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:20,611 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717933078] [2023-01-27 19:30:20,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:20,612 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:20,647 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:20,647 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1285078763] [2023-01-27 19:30:20,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:20,648 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:20,648 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:20,650 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:30:20,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 19:30:20,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 19:30:20,778 INFO L263 TraceCheckSpWp]: Trace formula consists of 382 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:30:20,781 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:20,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:20,865 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:20,865 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:20,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717933078] [2023-01-27 19:30:20,865 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:20,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1285078763] [2023-01-27 19:30:20,865 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1285078763] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:20,865 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:20,865 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4] total 6 [2023-01-27 19:30:20,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572140929] [2023-01-27 19:30:20,866 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:20,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:30:20,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:20,866 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:30:20,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:30:20,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 358 [2023-01-27 19:30:20,868 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 28 transitions, 81 flow. Second operand has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:20,868 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:20,868 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 358 [2023-01-27 19:30:20,869 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:21,154 INFO L130 PetriNetUnfolder]: 48/121 cut-off events. [2023-01-27 19:30:21,154 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 19:30:21,155 INFO L83 FinitePrefix]: Finished finitePrefix Result has 258 conditions, 121 events. 48/121 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 300 event pairs, 33 based on Foata normal form. 6/102 useless extension candidates. Maximal degree in co-relation 219. Up to 100 conditions per place. [2023-01-27 19:30:21,155 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 5 changer transitions 0/31 dead transitions. [2023-01-27 19:30:21,155 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 31 transitions, 147 flow [2023-01-27 19:30:21,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:30:21,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:30:21,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 965 transitions. [2023-01-27 19:30:21,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44925512104283055 [2023-01-27 19:30:21,158 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 965 transitions. [2023-01-27 19:30:21,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 965 transitions. [2023-01-27 19:30:21,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:21,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 965 transitions. [2023-01-27 19:30:21,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 160.83333333333334) internal successors, (965), 6 states have internal predecessors, (965), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:21,162 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:21,163 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:21,163 INFO L175 Difference]: Start difference. First operand has 29 places, 28 transitions, 81 flow. Second operand 6 states and 965 transitions. [2023-01-27 19:30:21,163 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 31 transitions, 147 flow [2023-01-27 19:30:21,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 31 transitions, 143 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:21,165 INFO L231 Difference]: Finished difference. Result has 36 places, 31 transitions, 119 flow [2023-01-27 19:30:21,165 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=28, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=28, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=119, PETRI_PLACES=36, PETRI_TRANSITIONS=31} [2023-01-27 19:30:21,165 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 11 predicate places. [2023-01-27 19:30:21,165 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 31 transitions, 119 flow [2023-01-27 19:30:21,166 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 157.83333333333334) internal successors, (947), 6 states have internal predecessors, (947), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:21,166 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:21,166 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:21,174 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:21,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:21,372 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:21,373 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:21,373 INFO L85 PathProgramCache]: Analyzing trace with hash 147605735, now seen corresponding path program 2 times [2023-01-27 19:30:21,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:21,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [903042989] [2023-01-27 19:30:21,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:21,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:21,443 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:21,444 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1150951185] [2023-01-27 19:30:21,444 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 19:30:21,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:21,444 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:21,463 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:30:21,496 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 19:30:21,712 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 19:30:21,717 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:21,722 INFO L263 TraceCheckSpWp]: Trace formula consists of 1075 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 19:30:21,725 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:21,757 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:21,758 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:21,800 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 10 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 19:30:21,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:21,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [903042989] [2023-01-27 19:30:21,800 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:21,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1150951185] [2023-01-27 19:30:21,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1150951185] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:21,803 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:21,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2023-01-27 19:30:21,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886168028] [2023-01-27 19:30:21,803 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:21,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-27 19:30:21,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:21,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-27 19:30:21,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=66, Unknown=0, NotChecked=0, Total=132 [2023-01-27 19:30:21,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 358 [2023-01-27 19:30:21,809 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 31 transitions, 119 flow. Second operand has 12 states, 12 states have (on average 157.41666666666666) internal successors, (1889), 12 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:21,809 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:21,809 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 358 [2023-01-27 19:30:21,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:22,572 INFO L130 PetriNetUnfolder]: 48/133 cut-off events. [2023-01-27 19:30:22,573 INFO L131 PetriNetUnfolder]: For 81/81 co-relation queries the response was YES. [2023-01-27 19:30:22,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 329 conditions, 133 events. 48/133 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 11. Compared 353 event pairs, 33 based on Foata normal form. 12/120 useless extension candidates. Maximal degree in co-relation 215. Up to 100 conditions per place. [2023-01-27 19:30:22,573 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 22 selfloop transitions, 11 changer transitions 0/37 dead transitions. [2023-01-27 19:30:22,574 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 37 transitions, 221 flow [2023-01-27 19:30:22,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 19:30:22,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 19:30:22,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1910 transitions. [2023-01-27 19:30:22,577 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4445996275605214 [2023-01-27 19:30:22,578 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1910 transitions. [2023-01-27 19:30:22,578 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1910 transitions. [2023-01-27 19:30:22,578 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:22,578 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1910 transitions. [2023-01-27 19:30:22,581 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 159.16666666666666) internal successors, (1910), 12 states have internal predecessors, (1910), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:22,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:22,587 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 358.0) internal successors, (4654), 13 states have internal predecessors, (4654), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:22,587 INFO L175 Difference]: Start difference. First operand has 36 places, 31 transitions, 119 flow. Second operand 12 states and 1910 transitions. [2023-01-27 19:30:22,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 37 transitions, 221 flow [2023-01-27 19:30:22,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 37 transitions, 207 flow, removed 6 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:22,589 INFO L231 Difference]: Finished difference. Result has 52 places, 37 transitions, 201 flow [2023-01-27 19:30:22,589 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=105, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=201, PETRI_PLACES=52, PETRI_TRANSITIONS=37} [2023-01-27 19:30:22,590 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 27 predicate places. [2023-01-27 19:30:22,590 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 37 transitions, 201 flow [2023-01-27 19:30:22,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 157.41666666666666) internal successors, (1889), 12 states have internal predecessors, (1889), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:22,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:22,591 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 19:30:22,599 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:22,797 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-01-27 19:30:22,798 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:22,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:22,798 INFO L85 PathProgramCache]: Analyzing trace with hash -695915609, now seen corresponding path program 3 times [2023-01-27 19:30:22,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:22,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311129515] [2023-01-27 19:30:22,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:22,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:22,883 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:22,883 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [730698092] [2023-01-27 19:30:22,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 19:30:22,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:22,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:22,884 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:30:22,887 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 19:30:23,175 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 19:30:23,175 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:23,178 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 3 conjunts are in the unsatisfiable core [2023-01-27 19:30:23,179 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:23,199 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:30:23,199 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:23,218 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2023-01-27 19:30:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311129515] [2023-01-27 19:30:23,218 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [730698092] [2023-01-27 19:30:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [730698092] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:23,219 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:23,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2023-01-27 19:30:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1650001854] [2023-01-27 19:30:23,219 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:23,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 19:30:23,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:23,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 19:30:23,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=15, Unknown=0, NotChecked=0, Total=30 [2023-01-27 19:30:23,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 358 [2023-01-27 19:30:23,255 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 37 transitions, 201 flow. Second operand has 6 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:23,255 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:23,255 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 358 [2023-01-27 19:30:23,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:23,543 INFO L130 PetriNetUnfolder]: 50/160 cut-off events. [2023-01-27 19:30:23,543 INFO L131 PetriNetUnfolder]: For 163/163 co-relation queries the response was YES. [2023-01-27 19:30:23,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522 conditions, 160 events. 50/160 cut-off events. For 163/163 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 3/138 useless extension candidates. Maximal degree in co-relation 310. Up to 94 conditions per place. [2023-01-27 19:30:23,544 INFO L137 encePairwiseOnDemand]: 354/358 looper letters, 66 selfloop transitions, 6 changer transitions 0/76 dead transitions. [2023-01-27 19:30:23,545 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 76 transitions, 694 flow [2023-01-27 19:30:23,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 19:30:23,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 19:30:23,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 953 transitions. [2023-01-27 19:30:23,547 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4436685288640596 [2023-01-27 19:30:23,547 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 953 transitions. [2023-01-27 19:30:23,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 953 transitions. [2023-01-27 19:30:23,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:23,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 953 transitions. [2023-01-27 19:30:23,549 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 158.83333333333334) internal successors, (953), 6 states have internal predecessors, (953), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:23,551 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:23,551 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 358.0) internal successors, (2506), 7 states have internal predecessors, (2506), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:23,551 INFO L175 Difference]: Start difference. First operand has 52 places, 37 transitions, 201 flow. Second operand 6 states and 953 transitions. [2023-01-27 19:30:23,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 76 transitions, 694 flow [2023-01-27 19:30:23,562 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 52 places, 76 transitions, 500 flow, removed 76 selfloop flow, removed 5 redundant places. [2023-01-27 19:30:23,563 INFO L231 Difference]: Finished difference. Result has 56 places, 40 transitions, 236 flow [2023-01-27 19:30:23,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=37, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=33, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=236, PETRI_PLACES=56, PETRI_TRANSITIONS=40} [2023-01-27 19:30:23,564 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 31 predicate places. [2023-01-27 19:30:23,564 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 40 transitions, 236 flow [2023-01-27 19:30:23,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 155.16666666666666) internal successors, (931), 6 states have internal predecessors, (931), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:23,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:23,565 INFO L208 CegarLoopForPetriNet]: trace histogram [40, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:30:23,585 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-01-27 19:30:23,770 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:23,770 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:23,771 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:23,771 INFO L85 PathProgramCache]: Analyzing trace with hash -666220907, now seen corresponding path program 4 times [2023-01-27 19:30:23,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:23,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153507130] [2023-01-27 19:30:23,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:23,771 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:24,074 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:24,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [516549498] [2023-01-27 19:30:24,074 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 19:30:24,074 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:24,074 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:24,075 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:30:24,104 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 19:30:26,042 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 19:30:26,042 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 19:30:26,094 INFO L263 TraceCheckSpWp]: Trace formula consists of 9505 conjuncts, 12 conjunts are in the unsatisfiable core [2023-01-27 19:30:26,102 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 19:30:26,171 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:30:26,171 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 19:30:26,328 INFO L134 CoverageAnalysis]: Checked inductivity of 958 backedges. 367 proven. 55 refuted. 0 times theorem prover too weak. 536 trivial. 0 not checked. [2023-01-27 19:30:26,328 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 19:30:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153507130] [2023-01-27 19:30:26,328 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-01-27 19:30:26,328 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [516549498] [2023-01-27 19:30:26,328 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [516549498] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 19:30:26,328 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-01-27 19:30:26,329 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13] total 24 [2023-01-27 19:30:26,329 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264332696] [2023-01-27 19:30:26,329 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-01-27 19:30:26,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2023-01-27 19:30:26,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 19:30:26,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2023-01-27 19:30:26,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=276, Invalid=276, Unknown=0, NotChecked=0, Total=552 [2023-01-27 19:30:26,332 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 156 out of 358 [2023-01-27 19:30:26,334 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 40 transitions, 236 flow. Second operand has 24 states, 24 states have (on average 157.33333333333334) internal successors, (3776), 24 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:26,334 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 19:30:26,334 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 156 of 358 [2023-01-27 19:30:26,334 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 19:30:27,159 INFO L130 PetriNetUnfolder]: 50/208 cut-off events. [2023-01-27 19:30:27,159 INFO L131 PetriNetUnfolder]: For 3489/3489 co-relation queries the response was YES. [2023-01-27 19:30:27,159 INFO L83 FinitePrefix]: Finished finitePrefix Result has 638 conditions, 208 events. 50/208 cut-off events. For 3489/3489 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 285 event pairs, 33 based on Foata normal form. 48/231 useless extension candidates. Maximal degree in co-relation 423. Up to 106 conditions per place. [2023-01-27 19:30:27,160 INFO L137 encePairwiseOnDemand]: 355/358 looper letters, 24 selfloop transitions, 24 changer transitions 0/52 dead transitions. [2023-01-27 19:30:27,160 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 52 transitions, 404 flow [2023-01-27 19:30:27,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2023-01-27 19:30:27,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2023-01-27 19:30:27,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 3800 transitions. [2023-01-27 19:30:27,166 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44227188081936686 [2023-01-27 19:30:27,166 INFO L72 ComplementDD]: Start complementDD. Operand 24 states and 3800 transitions. [2023-01-27 19:30:27,167 INFO L73 IsDeterministic]: Start isDeterministic. Operand 24 states and 3800 transitions. [2023-01-27 19:30:27,168 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 19:30:27,168 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 24 states and 3800 transitions. [2023-01-27 19:30:27,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 25 states, 24 states have (on average 158.33333333333334) internal successors, (3800), 24 states have internal predecessors, (3800), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:27,182 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:27,183 INFO L81 ComplementDD]: Finished complementDD. Result has 25 states, 25 states have (on average 358.0) internal successors, (8950), 25 states have internal predecessors, (8950), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:27,184 INFO L175 Difference]: Start difference. First operand has 56 places, 40 transitions, 236 flow. Second operand 24 states and 3800 transitions. [2023-01-27 19:30:27,184 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 52 transitions, 404 flow [2023-01-27 19:30:27,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 52 transitions, 396 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-01-27 19:30:27,186 INFO L231 Difference]: Finished difference. Result has 90 places, 52 transitions, 470 flow [2023-01-27 19:30:27,187 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=358, PETRI_DIFFERENCE_MINUEND_FLOW=228, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=24, PETRI_FLOW=470, PETRI_PLACES=90, PETRI_TRANSITIONS=52} [2023-01-27 19:30:27,187 INFO L281 CegarLoopForPetriNet]: 25 programPoint places, 65 predicate places. [2023-01-27 19:30:27,187 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 52 transitions, 470 flow [2023-01-27 19:30:27,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 157.33333333333334) internal successors, (3776), 24 states have internal predecessors, (3776), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 19:30:27,188 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 19:30:27,189 INFO L208 CegarLoopForPetriNet]: trace histogram [88, 4, 4, 2, 1, 1, 1, 1, 1] [2023-01-27 19:30:27,211 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 19:30:27,411 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:27,411 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-01-27 19:30:27,412 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 19:30:27,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1410511509, now seen corresponding path program 5 times [2023-01-27 19:30:27,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 19:30:27,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [499621669] [2023-01-27 19:30:27,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 19:30:27,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 19:30:28,082 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-01-27 19:30:28,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1573178220] [2023-01-27 19:30:28,082 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-27 19:30:28,082 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 19:30:28,082 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 19:30:28,083 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 19:30:28,105 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process Received shutdown request... [2023-01-27 19:44:35,894 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:44:35,916 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-27 19:44:36,959 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 [2023-01-27 19:44:37,095 WARN L435 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forcibly destroying the process [2023-01-27 19:44:37,130 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 137 [2023-01-27 19:44:37,131 ERROR L246 FreeRefinementEngine]: Caught known exception: Timeout or Toolchain cancelled by user [2023-01-27 19:44:37,132 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-01-27 19:44:37,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 19:44:37,133 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. [2023-01-27 19:44:37,134 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-01-27 19:44:37,134 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-01-27 19:44:37,134 INFO L445 BasicCegarLoop]: Path program histogram: [5, 1, 1] [2023-01-27 19:44:37,137 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-27 19:44:37,137 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-27 19:44:37,140 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 07:44:37 BasicIcfg [2023-01-27 19:44:37,140 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-27 19:44:37,140 INFO L158 Benchmark]: Toolchain (without parser) took 886875.05ms. Allocated memory was 381.7MB in the beginning and 736.1MB in the end (delta: 354.4MB). Free memory was 320.4MB in the beginning and 574.0MB in the end (delta: -253.6MB). Peak memory consumption was 102.7MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,140 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 381.7MB. Free memory is still 329.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-27 19:44:37,141 INFO L158 Benchmark]: CACSL2BoogieTranslator took 495.75ms. Allocated memory was 381.7MB in the beginning and 566.2MB in the end (delta: 184.5MB). Free memory was 320.1MB in the beginning and 524.9MB in the end (delta: -204.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,141 INFO L158 Benchmark]: Boogie Procedure Inliner took 34.26ms. Allocated memory is still 566.2MB. Free memory was 524.9MB in the beginning and 522.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,141 INFO L158 Benchmark]: Boogie Preprocessor took 22.48ms. Allocated memory is still 566.2MB. Free memory was 522.6MB in the beginning and 520.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,141 INFO L158 Benchmark]: RCFGBuilder took 483.20ms. Allocated memory is still 566.2MB. Free memory was 519.7MB in the beginning and 498.5MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,142 INFO L158 Benchmark]: TraceAbstraction took 885834.08ms. Allocated memory was 566.2MB in the beginning and 736.1MB in the end (delta: 169.9MB). Free memory was 497.7MB in the beginning and 574.0MB in the end (delta: -76.4MB). Peak memory consumption was 93.8MB. Max. memory is 16.0GB. [2023-01-27 19:44:37,143 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 381.7MB. Free memory is still 329.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 495.75ms. Allocated memory was 381.7MB in the beginning and 566.2MB in the end (delta: 184.5MB). Free memory was 320.1MB in the beginning and 524.9MB in the end (delta: -204.8MB). Peak memory consumption was 32.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 34.26ms. Allocated memory is still 566.2MB. Free memory was 524.9MB in the beginning and 522.6MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 22.48ms. Allocated memory is still 566.2MB. Free memory was 522.6MB in the beginning and 520.5MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 483.20ms. Allocated memory is still 566.2MB. Free memory was 519.7MB in the beginning and 498.5MB in the end (delta: 21.1MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 885834.08ms. Allocated memory was 566.2MB in the beginning and 736.1MB in the end (delta: 169.9MB). Free memory was 497.7MB in the beginning and 574.0MB in the end (delta: -76.4MB). Peak memory consumption was 93.8MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 28.2s, 159 PlacesBefore, 25 PlacesAfterwards, 179 TransitionsBefore, 36 TransitionsAfterwards, 3828 CoEnabledTransitionPairs, 6 FixpointIterations, 60 TrivialSequentialCompositions, 82 ConcurrentSequentialCompositions, 4 TrivialYvCompositions, 19 ConcurrentYvCompositions, 9 ChoiceCompositions, 174 TotalNumberOfCompositions, 3796 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3195, independent: 3129, independent conditional: 0, independent unconditional: 3129, dependent: 66, dependent conditional: 0, dependent unconditional: 66, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1955, independent: 1934, independent conditional: 0, independent unconditional: 1934, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3195, independent: 1195, independent conditional: 0, independent unconditional: 1195, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 1955, unknown conditional: 0, unknown unconditional: 1955] , Statistics on independence cache: Total cache size (in pairs): 46, Positive cache size: 40, Positive conditional cache size: 0, Positive unconditional cache size: 40, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 1061]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - TimeoutResultAtElement [Line: 999]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while CegarLoopForPetriNet was analyzing trace of length 104 with TraceHistMax 88,while AutomatonFreeRefinementEngine was Timeout during CAMEL. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 232 locations, 3 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 885.7s, OverallIterations: 7, TraceHistogramMax: 88, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 28.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 6 SdHoareTripleChecker+Valid, 2.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 6 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 2.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 436 IncrementalHoareTripleChecker+Invalid, 441 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 436 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 191 GetRequests, 149 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=470occurred in iteration=6, InterpolantAutomatonStates: 54, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 1.3s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 113 NumberOfCodeBlocks, 103 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 200 ConstructedInterpolants, 0 QuantifiedInterpolants, 328 SizeOfPredicates, 0 NumberOfNonLiveVariables, 11113 ConjunctsInSsa, 24 ConjunctsInUnsatCore, 10 InterpolantComputations, 2 PerfectInterpolantSequences, 1937/2071 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown