/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 --traceabstraction.when.to.check.the.insufficient.erros.location.relative.to.the.other.error.locations AFTER -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/triangular-longer-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-28 06:27:09,534 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-28 06:27:09,535 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-28 06:27:09,567 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-28 06:27:09,568 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-28 06:27:09,568 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-28 06:27:09,571 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-28 06:27:09,572 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-28 06:27:09,573 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-28 06:27:09,574 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-28 06:27:09,574 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-28 06:27:09,575 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-28 06:27:09,575 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-28 06:27:09,576 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-28 06:27:09,577 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-28 06:27:09,577 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-28 06:27:09,578 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-28 06:27:09,578 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-28 06:27:09,579 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-28 06:27:09,581 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-28 06:27:09,582 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-28 06:27:09,589 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-28 06:27:09,591 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-28 06:27:09,593 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-28 06:27:09,598 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-01-28 06:27:09,598 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-01-28 06:27:09,599 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-01-28 06:27:09,599 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-01-28 06:27:09,599 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-01-28 06:27:09,600 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... 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[2023-01-28 06:27:09,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-28 06:27:09,603 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-28 06:27:09,604 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-28 06:27:09,609 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 [2023-01-28 06:27:09,622 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-28 06:27:09,622 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-28 06:27:09,622 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-28 06:27:09,622 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-28 06:27:09,623 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-28 06:27:09,623 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-28 06:27:09,623 INFO L138 SettingsManager]: * Use SBE=true [2023-01-28 06:27:09,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-28 06:27:09,623 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-28 06:27:09,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-28 06:27:09,624 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-28 06:27:09,624 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:27:09,625 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-28 06:27:09,625 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-28 06:27:09,626 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-28 06:27:09,626 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-28 06:27:09,626 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> AFTER [2023-01-28 06:27:09,809 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-28 06:27:09,829 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-28 06:27:09,833 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-28 06:27:09,834 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-28 06:27:09,835 INFO L275 PluginConnector]: CDTParser initialized [2023-01-28 06:27:09,835 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-01-28 06:27:10,926 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-28 06:27:11,132 INFO L351 CDTParser]: Found 1 translation units. [2023-01-28 06:27:11,133 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i [2023-01-28 06:27:11,144 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bcbc0ac/30a08fed8c53468f9385d8e56dcd262b/FLAG31a36ace4 [2023-01-28 06:27:11,161 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/44bcbc0ac/30a08fed8c53468f9385d8e56dcd262b [2023-01-28 06:27:11,163 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-28 06:27:11,164 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-28 06:27:11,166 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-28 06:27:11,166 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-28 06:27:11,168 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-28 06:27:11,168 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,169 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@71c6e55c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11, skipping insertion in model container [2023-01-28 06:27:11,169 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,173 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-28 06:27:11,207 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-28 06:27:11,431 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-01-28 06:27:11,435 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:27:11,442 INFO L203 MainTranslator]: Completed pre-run [2023-01-28 06:27:11,478 WARN L247 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/pthread/triangular-longer-2.i[30963,30976] [2023-01-28 06:27:11,480 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-28 06:27:11,504 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:27:11,505 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-01-28 06:27:11,510 INFO L208 MainTranslator]: Completed translation [2023-01-28 06:27:11,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11 WrapperNode [2023-01-28 06:27:11,510 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-28 06:27:11,511 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-28 06:27:11,511 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-28 06:27:11,511 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-28 06:27:11,515 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,537 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,550 INFO L138 Inliner]: procedures = 169, calls = 24, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 47 [2023-01-28 06:27:11,550 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-28 06:27:11,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-28 06:27:11,551 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-28 06:27:11,551 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-28 06:27:11,557 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,557 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,561 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,561 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,575 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,578 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,578 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-28 06:27:11,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-28 06:27:11,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-28 06:27:11,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-28 06:27:11,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (1/1) ... [2023-01-28 06:27:11,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-28 06:27:11,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:11,638 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) [2023-01-28 06:27:11,640 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 [2023-01-28 06:27:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-28 06:27:11,668 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-28 06:27:11,668 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-28 06:27:11,669 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-28 06:27:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-28 06:27:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-01-28 06:27:11,669 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-28 06:27:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-28 06:27:11,671 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-28 06:27:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-28 06:27:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-01-28 06:27:11,672 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-28 06:27:11,672 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-28 06:27:11,673 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-28 06:27:11,802 INFO L236 CfgBuilder]: Building ICFG [2023-01-28 06:27:11,803 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-28 06:27:11,920 INFO L277 CfgBuilder]: Performing block encoding [2023-01-28 06:27:11,925 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-28 06:27:11,925 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-28 06:27:11,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:27:11 BoogieIcfgContainer [2023-01-28 06:27:11,926 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-28 06:27:11,928 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-28 06:27:11,928 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-28 06:27:11,930 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-28 06:27:11,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.01 06:27:11" (1/3) ... [2023-01-28 06:27:11,930 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c54ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:27:11, skipping insertion in model container [2023-01-28 06:27:11,930 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.01 06:27:11" (2/3) ... [2023-01-28 06:27:11,931 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@8c54ad0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.01 06:27:11, skipping insertion in model container [2023-01-28 06:27:11,931 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.01 06:27:11" (3/3) ... [2023-01-28 06:27:11,931 INFO L112 eAbstractionObserver]: Analyzing ICFG triangular-longer-2.i [2023-01-28 06:27:11,943 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-28 06:27:11,943 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-01-28 06:27:11,943 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-28 06:27:12,019 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-01-28 06:27:12,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 68 places, 66 transitions, 142 flow [2023-01-28 06:27:12,077 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-01-28 06:27:12,078 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:27:12,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-28 06:27:12,081 INFO L82 GeneralOperation]: Start removeDead. Operand has 68 places, 66 transitions, 142 flow [2023-01-28 06:27:12,084 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 66 places, 64 transitions, 134 flow [2023-01-28 06:27:12,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-28 06:27:12,094 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 66 places, 64 transitions, 134 flow [2023-01-28 06:27:12,097 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 66 places, 64 transitions, 134 flow [2023-01-28 06:27:12,097 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 66 places, 64 transitions, 134 flow [2023-01-28 06:27:12,117 INFO L130 PetriNetUnfolder]: 5/64 cut-off events. [2023-01-28 06:27:12,118 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:27:12,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 71 conditions, 64 events. 5/64 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 63 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 46. Up to 2 conditions per place. [2023-01-28 06:27:12,119 INFO L119 LiptonReduction]: Number of co-enabled transitions 1078 [2023-01-28 06:27:13,470 INFO L134 LiptonReduction]: Checked pairs total: 999 [2023-01-28 06:27:13,470 INFO L136 LiptonReduction]: Total number of compositions: 58 [2023-01-28 06:27:13,480 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-28 06:27:13,484 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;@4768118e, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-28 06:27:13,485 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-01-28 06:27:13,489 INFO L130 PetriNetUnfolder]: 3/13 cut-off events. [2023-01-28 06:27:13,489 INFO L131 PetriNetUnfolder]: For 0/0 co-relation queries the response was YES. [2023-01-28 06:27:13,489 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:13,490 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-28 06:27:13,490 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:13,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:13,493 INFO L85 PathProgramCache]: Analyzing trace with hash -776471266, now seen corresponding path program 1 times [2023-01-28 06:27:13,503 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:13,503 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [442920191] [2023-01-28 06:27:13,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:13,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:13,815 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:13,815 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:13,815 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [442920191] [2023-01-28 06:27:13,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [442920191] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:13,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:13,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-28 06:27:13,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487042242] [2023-01-28 06:27:13,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:13,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-01-28 06:27:13,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:13,843 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-01-28 06:27:13,843 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-01-28 06:27:13,844 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:13,846 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 14 transitions, 34 flow. Second operand has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2023-01-28 06:27:13,846 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:13,846 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:13,847 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:13,927 INFO L130 PetriNetUnfolder]: 94/152 cut-off events. [2023-01-28 06:27:13,927 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-28 06:27:13,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 316 conditions, 152 events. 94/152 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 14. Compared 393 event pairs, 11 based on Foata normal form. 0/106 useless extension candidates. Maximal degree in co-relation 306. Up to 76 conditions per place. [2023-01-28 06:27:13,930 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 18 selfloop transitions, 4 changer transitions 4/26 dead transitions. [2023-01-28 06:27:13,930 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 26 transitions, 110 flow [2023-01-28 06:27:13,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-01-28 06:27:13,937 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-01-28 06:27:13,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 233 transitions. [2023-01-28 06:27:13,947 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46975806451612906 [2023-01-28 06:27:13,948 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 233 transitions. [2023-01-28 06:27:13,948 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 233 transitions. [2023-01-28 06:27:13,950 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:13,951 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 233 transitions. [2023-01-28 06:27:13,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 58.25) internal successors, (233), 4 states have internal predecessors, (233), 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) [2023-01-28 06:27:13,958 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-01-28 06:27:13,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 124.0) internal successors, (620), 5 states have internal predecessors, (620), 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) [2023-01-28 06:27:13,959 INFO L175 Difference]: Start difference. First operand has 18 places, 14 transitions, 34 flow. Second operand 4 states and 233 transitions. [2023-01-28 06:27:13,960 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 26 transitions, 110 flow [2023-01-28 06:27:13,961 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 19 places, 26 transitions, 108 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-01-28 06:27:13,962 INFO L231 Difference]: Finished difference. Result has 21 places, 15 transitions, 53 flow [2023-01-28 06:27:13,963 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=16, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=53, PETRI_PLACES=21, PETRI_TRANSITIONS=15} [2023-01-28 06:27:13,966 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 3 predicate places. [2023-01-28 06:27:13,967 INFO L495 AbstractCegarLoop]: Abstraction has has 21 places, 15 transitions, 53 flow [2023-01-28 06:27:13,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 52.5) internal successors, (210), 4 states have internal predecessors, (210), 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) [2023-01-28 06:27:13,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:13,967 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:13,967 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-28 06:27:13,967 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:13,969 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:13,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1135033148, now seen corresponding path program 1 times [2023-01-28 06:27:13,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:13,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [597176710] [2023-01-28 06:27:13,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:13,971 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:13,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,064 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,064 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [597176710] [2023-01-28 06:27:14,064 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [597176710] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:14,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:14,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:27:14,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477583077] [2023-01-28 06:27:14,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:14,065 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:27:14,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:14,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:27:14,066 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:27:14,066 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:14,067 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 21 places, 15 transitions, 53 flow. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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) [2023-01-28 06:27:14,067 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:14,067 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:14,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:14,149 INFO L130 PetriNetUnfolder]: 126/217 cut-off events. [2023-01-28 06:27:14,149 INFO L131 PetriNetUnfolder]: For 73/73 co-relation queries the response was YES. [2023-01-28 06:27:14,150 INFO L83 FinitePrefix]: Finished finitePrefix Result has 547 conditions, 217 events. 126/217 cut-off events. For 73/73 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 654 event pairs, 19 based on Foata normal form. 10/191 useless extension candidates. Maximal degree in co-relation 535. Up to 89 conditions per place. [2023-01-28 06:27:14,151 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 33 selfloop transitions, 9 changer transitions 0/42 dead transitions. [2023-01-28 06:27:14,151 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 42 transitions, 215 flow [2023-01-28 06:27:14,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-28 06:27:14,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-28 06:27:14,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 344 transitions. [2023-01-28 06:27:14,153 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46236559139784944 [2023-01-28 06:27:14,153 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 344 transitions. [2023-01-28 06:27:14,153 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 344 transitions. [2023-01-28 06:27:14,153 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:14,154 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 344 transitions. [2023-01-28 06:27:14,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 57.333333333333336) internal successors, (344), 6 states have internal predecessors, (344), 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) [2023-01-28 06:27:14,156 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-01-28 06:27:14,156 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 124.0) internal successors, (868), 7 states have internal predecessors, (868), 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) [2023-01-28 06:27:14,156 INFO L175 Difference]: Start difference. First operand has 21 places, 15 transitions, 53 flow. Second operand 6 states and 344 transitions. [2023-01-28 06:27:14,156 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 42 transitions, 215 flow [2023-01-28 06:27:14,157 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 42 transitions, 215 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-28 06:27:14,158 INFO L231 Difference]: Finished difference. Result has 29 places, 24 transitions, 134 flow [2023-01-28 06:27:14,158 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=53, PETRI_DIFFERENCE_MINUEND_PLACES=20, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=15, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=9, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=134, PETRI_PLACES=29, PETRI_TRANSITIONS=24} [2023-01-28 06:27:14,159 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 11 predicate places. [2023-01-28 06:27:14,159 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 24 transitions, 134 flow [2023-01-28 06:27:14,159 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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) [2023-01-28 06:27:14,159 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:14,159 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:14,159 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-28 06:27:14,159 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:14,160 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:14,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1135047098, now seen corresponding path program 2 times [2023-01-28 06:27:14,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:14,160 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591780823] [2023-01-28 06:27:14,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:14,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:14,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591780823] [2023-01-28 06:27:14,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591780823] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:14,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:14,218 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-28 06:27:14,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993474364] [2023-01-28 06:27:14,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:14,219 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-01-28 06:27:14,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:14,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-01-28 06:27:14,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-01-28 06:27:14,220 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:14,220 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 24 transitions, 134 flow. Second operand has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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) [2023-01-28 06:27:14,220 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:14,220 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:14,220 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:14,281 INFO L130 PetriNetUnfolder]: 114/199 cut-off events. [2023-01-28 06:27:14,281 INFO L131 PetriNetUnfolder]: For 280/280 co-relation queries the response was YES. [2023-01-28 06:27:14,282 INFO L83 FinitePrefix]: Finished finitePrefix Result has 654 conditions, 199 events. 114/199 cut-off events. For 280/280 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 630 event pairs, 19 based on Foata normal form. 10/209 useless extension candidates. Maximal degree in co-relation 636. Up to 84 conditions per place. [2023-01-28 06:27:14,282 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 29 selfloop transitions, 9 changer transitions 4/42 dead transitions. [2023-01-28 06:27:14,282 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 42 transitions, 284 flow [2023-01-28 06:27:14,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-01-28 06:27:14,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-01-28 06:27:14,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 288 transitions. [2023-01-28 06:27:14,284 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4645161290322581 [2023-01-28 06:27:14,284 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 288 transitions. [2023-01-28 06:27:14,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 288 transitions. [2023-01-28 06:27:14,284 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:14,284 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 288 transitions. [2023-01-28 06:27:14,285 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 57.6) internal successors, (288), 5 states have internal predecessors, (288), 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) [2023-01-28 06:27:14,286 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2023-01-28 06:27:14,286 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 124.0) internal successors, (744), 6 states have internal predecessors, (744), 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) [2023-01-28 06:27:14,286 INFO L175 Difference]: Start difference. First operand has 29 places, 24 transitions, 134 flow. Second operand 5 states and 288 transitions. [2023-01-28 06:27:14,286 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 42 transitions, 284 flow [2023-01-28 06:27:14,288 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 42 transitions, 282 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-01-28 06:27:14,288 INFO L231 Difference]: Finished difference. Result has 35 places, 26 transitions, 182 flow [2023-01-28 06:27:14,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=182, PETRI_PLACES=35, PETRI_TRANSITIONS=26} [2023-01-28 06:27:14,289 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 17 predicate places. [2023-01-28 06:27:14,289 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 26 transitions, 182 flow [2023-01-28 06:27:14,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 52.6) internal successors, (263), 5 states have internal predecessors, (263), 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) [2023-01-28 06:27:14,289 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:14,289 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:14,290 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-01-28 06:27:14,290 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:14,290 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:14,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1601852847, now seen corresponding path program 1 times [2023-01-28 06:27:14,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:14,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1991471665] [2023-01-28 06:27:14,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:14,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:14,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,373 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,374 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1991471665] [2023-01-28 06:27:14,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1991471665] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:14,374 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:14,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:27:14,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1091471837] [2023-01-28 06:27:14,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:14,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:27:14,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:14,377 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:27:14,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:27:14,378 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:14,378 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 26 transitions, 182 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,378 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:14,378 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:14,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:14,472 INFO L130 PetriNetUnfolder]: 136/239 cut-off events. [2023-01-28 06:27:14,472 INFO L131 PetriNetUnfolder]: For 571/571 co-relation queries the response was YES. [2023-01-28 06:27:14,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 864 conditions, 239 events. 136/239 cut-off events. For 571/571 co-relation queries the response was YES. Maximal size of possible extension queue 23. Compared 797 event pairs, 31 based on Foata normal form. 4/243 useless extension candidates. Maximal degree in co-relation 842. Up to 101 conditions per place. [2023-01-28 06:27:14,474 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 30 selfloop transitions, 16 changer transitions 8/54 dead transitions. [2023-01-28 06:27:14,474 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 419 flow [2023-01-28 06:27:14,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-01-28 06:27:14,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-01-28 06:27:14,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 398 transitions. [2023-01-28 06:27:14,483 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45852534562211983 [2023-01-28 06:27:14,484 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 398 transitions. [2023-01-28 06:27:14,484 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 398 transitions. [2023-01-28 06:27:14,484 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:14,484 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 398 transitions. [2023-01-28 06:27:14,485 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 56.857142857142854) internal successors, (398), 7 states have internal predecessors, (398), 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) [2023-01-28 06:27:14,486 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-01-28 06:27:14,487 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 124.0) internal successors, (992), 8 states have internal predecessors, (992), 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) [2023-01-28 06:27:14,487 INFO L175 Difference]: Start difference. First operand has 35 places, 26 transitions, 182 flow. Second operand 7 states and 398 transitions. [2023-01-28 06:27:14,487 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 419 flow [2023-01-28 06:27:14,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 54 transitions, 379 flow, removed 9 selfloop flow, removed 4 redundant places. [2023-01-28 06:27:14,489 INFO L231 Difference]: Finished difference. Result has 40 places, 34 transitions, 269 flow [2023-01-28 06:27:14,490 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=269, PETRI_PLACES=40, PETRI_TRANSITIONS=34} [2023-01-28 06:27:14,490 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 22 predicate places. [2023-01-28 06:27:14,490 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 34 transitions, 269 flow [2023-01-28 06:27:14,491 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,491 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:14,491 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:14,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-28 06:27:14,491 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:14,491 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:14,491 INFO L85 PathProgramCache]: Analyzing trace with hash -1601722647, now seen corresponding path program 2 times [2023-01-28 06:27:14,491 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:14,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [981081562] [2023-01-28 06:27:14,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:14,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:14,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,551 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,552 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,552 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [981081562] [2023-01-28 06:27:14,552 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [981081562] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:14,552 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:14,552 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:27:14,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548642388] [2023-01-28 06:27:14,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:14,552 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:27:14,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:14,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:27:14,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:27:14,553 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:14,554 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 269 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,554 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:14,554 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:14,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:14,640 INFO L130 PetriNetUnfolder]: 172/303 cut-off events. [2023-01-28 06:27:14,641 INFO L131 PetriNetUnfolder]: For 787/787 co-relation queries the response was YES. [2023-01-28 06:27:14,641 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1151 conditions, 303 events. 172/303 cut-off events. For 787/787 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 1053 event pairs, 22 based on Foata normal form. 8/311 useless extension candidates. Maximal degree in co-relation 1127. Up to 79 conditions per place. [2023-01-28 06:27:14,642 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 38 selfloop transitions, 22 changer transitions 3/63 dead transitions. [2023-01-28 06:27:14,642 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 63 transitions, 519 flow [2023-01-28 06:27:14,643 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:27:14,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:27:14,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 454 transitions. [2023-01-28 06:27:14,644 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4576612903225806 [2023-01-28 06:27:14,644 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 454 transitions. [2023-01-28 06:27:14,644 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 454 transitions. [2023-01-28 06:27:14,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:14,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 454 transitions. [2023-01-28 06:27:14,645 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.75) internal successors, (454), 8 states have internal predecessors, (454), 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) [2023-01-28 06:27:14,646 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-01-28 06:27:14,647 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-01-28 06:27:14,647 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 269 flow. Second operand 8 states and 454 transitions. [2023-01-28 06:27:14,647 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 63 transitions, 519 flow [2023-01-28 06:27:14,649 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 63 transitions, 495 flow, removed 8 selfloop flow, removed 1 redundant places. [2023-01-28 06:27:14,650 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 375 flow [2023-01-28 06:27:14,650 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=245, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=15, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=375, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-01-28 06:27:14,651 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 32 predicate places. [2023-01-28 06:27:14,651 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 375 flow [2023-01-28 06:27:14,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,651 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:14,651 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:14,651 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-28 06:27:14,651 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:14,652 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:14,652 INFO L85 PathProgramCache]: Analyzing trace with hash -1572215607, now seen corresponding path program 3 times [2023-01-28 06:27:14,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:14,652 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067807281] [2023-01-28 06:27:14,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:14,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:14,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,713 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067807281] [2023-01-28 06:27:14,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067807281] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-28 06:27:14,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-28 06:27:14,714 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-01-28 06:27:14,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779907873] [2023-01-28 06:27:14,714 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-28 06:27:14,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-28 06:27:14,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:14,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-28 06:27:14,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-01-28 06:27:14,715 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:14,716 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 375 flow. Second operand has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,716 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:14,716 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:14,716 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:14,834 INFO L130 PetriNetUnfolder]: 168/295 cut-off events. [2023-01-28 06:27:14,834 INFO L131 PetriNetUnfolder]: For 1394/1394 co-relation queries the response was YES. [2023-01-28 06:27:14,835 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1328 conditions, 295 events. 168/295 cut-off events. For 1394/1394 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1049 event pairs, 18 based on Foata normal form. 8/303 useless extension candidates. Maximal degree in co-relation 1299. Up to 71 conditions per place. [2023-01-28 06:27:14,836 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 28 selfloop transitions, 27 changer transitions 10/65 dead transitions. [2023-01-28 06:27:14,836 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 65 transitions, 651 flow [2023-01-28 06:27:14,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-01-28 06:27:14,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-01-28 06:27:14,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 453 transitions. [2023-01-28 06:27:14,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4566532258064516 [2023-01-28 06:27:14,837 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 453 transitions. [2023-01-28 06:27:14,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 453 transitions. [2023-01-28 06:27:14,838 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:14,838 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 453 transitions. [2023-01-28 06:27:14,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 56.625) internal successors, (453), 8 states have internal predecessors, (453), 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) [2023-01-28 06:27:14,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-01-28 06:27:14,840 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 124.0) internal successors, (1116), 9 states have internal predecessors, (1116), 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) [2023-01-28 06:27:14,840 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 375 flow. Second operand 8 states and 453 transitions. [2023-01-28 06:27:14,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 65 transitions, 651 flow [2023-01-28 06:27:14,843 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 65 transitions, 617 flow, removed 8 selfloop flow, removed 3 redundant places. [2023-01-28 06:27:14,844 INFO L231 Difference]: Finished difference. Result has 57 places, 43 transitions, 476 flow [2023-01-28 06:27:14,844 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=341, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=24, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=476, PETRI_PLACES=57, PETRI_TRANSITIONS=43} [2023-01-28 06:27:14,845 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 39 predicate places. [2023-01-28 06:27:14,845 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 43 transitions, 476 flow [2023-01-28 06:27:14,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 52.666666666666664) internal successors, (316), 6 states have internal predecessors, (316), 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) [2023-01-28 06:27:14,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:14,845 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:14,845 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-28 06:27:14,845 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:14,846 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:14,846 INFO L85 PathProgramCache]: Analyzing trace with hash 1868187119, now seen corresponding path program 4 times [2023-01-28 06:27:14,846 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:14,846 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790373591] [2023-01-28 06:27:14,846 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:14,846 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:14,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:14,930 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:14,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:14,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790373591] [2023-01-28 06:27:14,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790373591] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:14,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [148391161] [2023-01-28 06:27:14,931 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:27:14,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:14,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:14,969 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) [2023-01-28 06:27:15,017 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-28 06:27:15,070 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:27:15,070 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:15,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 06:27:15,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:15,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:15,152 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:15,285 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:15,285 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [148391161] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:15,285 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:15,285 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2023-01-28 06:27:15,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180217818] [2023-01-28 06:27:15,285 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:15,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-01-28 06:27:15,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:15,286 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-01-28 06:27:15,286 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2023-01-28 06:27:15,287 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:15,287 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 43 transitions, 476 flow. Second operand has 12 states, 12 states have (on average 52.833333333333336) internal successors, (634), 12 states have internal predecessors, (634), 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) [2023-01-28 06:27:15,287 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:15,287 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:15,287 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:15,454 INFO L130 PetriNetUnfolder]: 192/343 cut-off events. [2023-01-28 06:27:15,454 INFO L131 PetriNetUnfolder]: For 2705/2705 co-relation queries the response was YES. [2023-01-28 06:27:15,455 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1694 conditions, 343 events. 192/343 cut-off events. For 2705/2705 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1207 event pairs, 39 based on Foata normal form. 24/367 useless extension candidates. Maximal degree in co-relation 1662. Up to 181 conditions per place. [2023-01-28 06:27:15,457 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 19 changer transitions 19/83 dead transitions. [2023-01-28 06:27:15,457 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 83 transitions, 916 flow [2023-01-28 06:27:15,457 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-28 06:27:15,457 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-28 06:27:15,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 677 transitions. [2023-01-28 06:27:15,458 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4549731182795699 [2023-01-28 06:27:15,458 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 677 transitions. [2023-01-28 06:27:15,458 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 677 transitions. [2023-01-28 06:27:15,459 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:15,459 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 677 transitions. [2023-01-28 06:27:15,460 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 56.416666666666664) internal successors, (677), 12 states have internal predecessors, (677), 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) [2023-01-28 06:27:15,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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) [2023-01-28 06:27:15,462 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 124.0) internal successors, (1612), 13 states have internal predecessors, (1612), 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) [2023-01-28 06:27:15,462 INFO L175 Difference]: Start difference. First operand has 57 places, 43 transitions, 476 flow. Second operand 12 states and 677 transitions. [2023-01-28 06:27:15,462 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 83 transitions, 916 flow [2023-01-28 06:27:15,467 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 83 transitions, 861 flow, removed 10 selfloop flow, removed 5 redundant places. [2023-01-28 06:27:15,468 INFO L231 Difference]: Finished difference. Result has 69 places, 49 transitions, 586 flow [2023-01-28 06:27:15,468 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=421, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=586, PETRI_PLACES=69, PETRI_TRANSITIONS=49} [2023-01-28 06:27:15,468 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 51 predicate places. [2023-01-28 06:27:15,468 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 49 transitions, 586 flow [2023-01-28 06:27:15,469 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 52.833333333333336) internal successors, (634), 12 states have internal predecessors, (634), 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) [2023-01-28 06:27:15,469 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:15,469 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:15,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-01-28 06:27:15,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:15,676 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:15,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:15,676 INFO L85 PathProgramCache]: Analyzing trace with hash 1881593069, now seen corresponding path program 5 times [2023-01-28 06:27:15,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:15,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1775175343] [2023-01-28 06:27:15,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:15,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:15,750 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:15,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1775175343] [2023-01-28 06:27:15,750 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1775175343] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:15,750 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1619470486] [2023-01-28 06:27:15,751 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 06:27:15,751 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:15,751 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:15,769 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) [2023-01-28 06:27:15,776 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-28 06:27:15,834 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:27:15,834 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:15,835 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 9 conjunts are in the unsatisfiable core [2023-01-28 06:27:15,836 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:15,872 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:15,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:15,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1619470486] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:15,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:15,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 11 [2023-01-28 06:27:15,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459665223] [2023-01-28 06:27:15,954 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:15,954 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-01-28 06:27:15,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:15,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-01-28 06:27:15,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2023-01-28 06:27:15,955 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:15,956 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 49 transitions, 586 flow. Second operand has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 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) [2023-01-28 06:27:15,956 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:15,956 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:15,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:16,252 INFO L130 PetriNetUnfolder]: 254/459 cut-off events. [2023-01-28 06:27:16,252 INFO L131 PetriNetUnfolder]: For 6988/6988 co-relation queries the response was YES. [2023-01-28 06:27:16,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2615 conditions, 459 events. 254/459 cut-off events. For 6988/6988 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 1795 event pairs, 28 based on Foata normal form. 28/487 useless extension candidates. Maximal degree in co-relation 2577. Up to 131 conditions per place. [2023-01-28 06:27:16,255 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 46 selfloop transitions, 44 changer transitions 29/119 dead transitions. [2023-01-28 06:27:16,255 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 119 transitions, 1453 flow [2023-01-28 06:27:16,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 06:27:16,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 06:27:16,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1015 transitions. [2023-01-28 06:27:16,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45474910394265233 [2023-01-28 06:27:16,257 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1015 transitions. [2023-01-28 06:27:16,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1015 transitions. [2023-01-28 06:27:16,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:16,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1015 transitions. [2023-01-28 06:27:16,259 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 56.388888888888886) internal successors, (1015), 18 states have internal predecessors, (1015), 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) [2023-01-28 06:27:16,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-01-28 06:27:16,262 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-01-28 06:27:16,262 INFO L175 Difference]: Start difference. First operand has 69 places, 49 transitions, 586 flow. Second operand 18 states and 1015 transitions. [2023-01-28 06:27:16,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 119 transitions, 1453 flow [2023-01-28 06:27:16,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 119 transitions, 1310 flow, removed 59 selfloop flow, removed 5 redundant places. [2023-01-28 06:27:16,272 INFO L231 Difference]: Finished difference. Result has 91 places, 66 transitions, 944 flow [2023-01-28 06:27:16,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=487, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=28, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=17, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=944, PETRI_PLACES=91, PETRI_TRANSITIONS=66} [2023-01-28 06:27:16,273 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 73 predicate places. [2023-01-28 06:27:16,273 INFO L495 AbstractCegarLoop]: Abstraction has has 91 places, 66 transitions, 944 flow [2023-01-28 06:27:16,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 52.92307692307692) internal successors, (688), 13 states have internal predecessors, (688), 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) [2023-01-28 06:27:16,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:16,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:16,278 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:16,477 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,SelfDestructingSolverStorable7 [2023-01-28 06:27:16,478 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:16,478 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:16,478 INFO L85 PathProgramCache]: Analyzing trace with hash -1657155026, now seen corresponding path program 6 times [2023-01-28 06:27:16,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:16,478 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [717185542] [2023-01-28 06:27:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:16,479 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:16,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:16,580 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:16,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [717185542] [2023-01-28 06:27:16,581 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [717185542] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:16,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [614856902] [2023-01-28 06:27:16,581 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 06:27:16,581 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:16,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:16,585 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) [2023-01-28 06:27:16,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-28 06:27:16,639 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2023-01-28 06:27:16,639 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:16,640 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 06:27:16,642 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:16,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:16,665 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:16,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:16,811 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [614856902] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:16,811 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:16,811 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2023-01-28 06:27:16,811 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566821043] [2023-01-28 06:27:16,811 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:16,812 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-01-28 06:27:16,812 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:16,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-01-28 06:27:16,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2023-01-28 06:27:16,813 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:16,813 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 91 places, 66 transitions, 944 flow. Second operand has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 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) [2023-01-28 06:27:16,813 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:16,814 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:16,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:17,070 INFO L130 PetriNetUnfolder]: 338/619 cut-off events. [2023-01-28 06:27:17,070 INFO L131 PetriNetUnfolder]: For 15431/15431 co-relation queries the response was YES. [2023-01-28 06:27:17,072 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4526 conditions, 619 events. 338/619 cut-off events. For 15431/15431 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 2646 event pairs, 27 based on Foata normal form. 24/643 useless extension candidates. Maximal degree in co-relation 4478. Up to 207 conditions per place. [2023-01-28 06:27:17,074 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 56 selfloop transitions, 60 changer transitions 19/135 dead transitions. [2023-01-28 06:27:17,074 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 135 transitions, 2183 flow [2023-01-28 06:27:17,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-01-28 06:27:17,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-01-28 06:27:17,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 1010 transitions. [2023-01-28 06:27:17,077 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4525089605734767 [2023-01-28 06:27:17,077 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 1010 transitions. [2023-01-28 06:27:17,077 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 1010 transitions. [2023-01-28 06:27:17,077 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:17,078 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 1010 transitions. [2023-01-28 06:27:17,079 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 56.111111111111114) internal successors, (1010), 18 states have internal predecessors, (1010), 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) [2023-01-28 06:27:17,083 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-01-28 06:27:17,083 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 124.0) internal successors, (2356), 19 states have internal predecessors, (2356), 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) [2023-01-28 06:27:17,083 INFO L175 Difference]: Start difference. First operand has 91 places, 66 transitions, 944 flow. Second operand 18 states and 1010 transitions. [2023-01-28 06:27:17,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 135 transitions, 2183 flow [2023-01-28 06:27:17,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 135 transitions, 1903 flow, removed 130 selfloop flow, removed 4 redundant places. [2023-01-28 06:27:17,134 INFO L231 Difference]: Finished difference. Result has 112 places, 82 transitions, 1311 flow [2023-01-28 06:27:17,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=746, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=66, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=1311, PETRI_PLACES=112, PETRI_TRANSITIONS=82} [2023-01-28 06:27:17,135 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 94 predicate places. [2023-01-28 06:27:17,135 INFO L495 AbstractCegarLoop]: Abstraction has has 112 places, 82 transitions, 1311 flow [2023-01-28 06:27:17,135 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 52.714285714285715) internal successors, (738), 14 states have internal predecessors, (738), 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) [2023-01-28 06:27:17,135 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:17,136 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:17,152 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:17,340 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:17,341 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:17,341 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:17,341 INFO L85 PathProgramCache]: Analyzing trace with hash 929897188, now seen corresponding path program 7 times [2023-01-28 06:27:17,341 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:17,341 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [77018547] [2023-01-28 06:27:17,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:17,341 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:17,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:17,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:17,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [77018547] [2023-01-28 06:27:17,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [77018547] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:17,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [217584117] [2023-01-28 06:27:17,424 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 06:27:17,424 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:17,424 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:17,437 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) [2023-01-28 06:27:17,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-28 06:27:17,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:17,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-28 06:27:17,556 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:17,579 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:17,579 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:17,665 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:17,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [217584117] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:17,665 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:17,665 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2023-01-28 06:27:17,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322516107] [2023-01-28 06:27:17,665 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:17,665 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-28 06:27:17,666 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:17,666 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-28 06:27:17,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2023-01-28 06:27:17,667 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:17,667 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 82 transitions, 1311 flow. Second operand has 15 states, 15 states have (on average 52.733333333333334) internal successors, (791), 15 states have internal predecessors, (791), 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) [2023-01-28 06:27:17,667 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:17,667 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:17,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:18,035 INFO L130 PetriNetUnfolder]: 390/711 cut-off events. [2023-01-28 06:27:18,035 INFO L131 PetriNetUnfolder]: For 27776/27776 co-relation queries the response was YES. [2023-01-28 06:27:18,037 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5902 conditions, 711 events. 390/711 cut-off events. For 27776/27776 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 3090 event pairs, 12 based on Foata normal form. 24/735 useless extension candidates. Maximal degree in co-relation 5847. Up to 238 conditions per place. [2023-01-28 06:27:18,040 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 45 selfloop transitions, 84 changer transitions 36/165 dead transitions. [2023-01-28 06:27:18,040 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 165 transitions, 2973 flow [2023-01-28 06:27:18,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-28 06:27:18,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-28 06:27:18,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 1182 transitions. [2023-01-28 06:27:18,043 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4539170506912442 [2023-01-28 06:27:18,043 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 1182 transitions. [2023-01-28 06:27:18,043 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 1182 transitions. [2023-01-28 06:27:18,043 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:18,043 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 1182 transitions. [2023-01-28 06:27:18,045 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 56.285714285714285) internal successors, (1182), 21 states have internal predecessors, (1182), 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) [2023-01-28 06:27:18,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2023-01-28 06:27:18,048 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 124.0) internal successors, (2728), 22 states have internal predecessors, (2728), 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) [2023-01-28 06:27:18,048 INFO L175 Difference]: Start difference. First operand has 112 places, 82 transitions, 1311 flow. Second operand 21 states and 1182 transitions. [2023-01-28 06:27:18,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 165 transitions, 2973 flow [2023-01-28 06:27:18,076 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 165 transitions, 2401 flow, removed 246 selfloop flow, removed 12 redundant places. [2023-01-28 06:27:18,079 INFO L231 Difference]: Finished difference. Result has 130 places, 101 transitions, 1712 flow [2023-01-28 06:27:18,079 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=975, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=1712, PETRI_PLACES=130, PETRI_TRANSITIONS=101} [2023-01-28 06:27:18,080 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 112 predicate places. [2023-01-28 06:27:18,080 INFO L495 AbstractCegarLoop]: Abstraction has has 130 places, 101 transitions, 1712 flow [2023-01-28 06:27:18,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 52.733333333333334) internal successors, (791), 15 states have internal predecessors, (791), 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) [2023-01-28 06:27:18,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:18,081 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:18,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:18,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:18,286 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:18,286 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:18,286 INFO L85 PathProgramCache]: Analyzing trace with hash -1150765664, now seen corresponding path program 8 times [2023-01-28 06:27:18,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:18,286 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091693761] [2023-01-28 06:27:18,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:18,286 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:18,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:18,396 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:18,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091693761] [2023-01-28 06:27:18,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091693761] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:18,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [48882210] [2023-01-28 06:27:18,397 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-28 06:27:18,397 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:18,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:18,411 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) [2023-01-28 06:27:18,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-28 06:27:18,474 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-28 06:27:18,475 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:18,475 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 15 conjunts are in the unsatisfiable core [2023-01-28 06:27:18,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:18,512 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:18,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:18,602 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:18,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [48882210] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:18,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:18,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 20 [2023-01-28 06:27:18,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336889248] [2023-01-28 06:27:18,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:18,602 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-28 06:27:18,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:18,603 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-28 06:27:18,603 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-01-28 06:27:18,604 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:18,605 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 130 places, 101 transitions, 1712 flow. Second operand has 22 states, 22 states have (on average 52.5) internal successors, (1155), 22 states have internal predecessors, (1155), 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) [2023-01-28 06:27:18,605 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:18,605 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:18,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:19,289 INFO L130 PetriNetUnfolder]: 538/959 cut-off events. [2023-01-28 06:27:19,289 INFO L131 PetriNetUnfolder]: For 42829/42829 co-relation queries the response was YES. [2023-01-28 06:27:19,292 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8737 conditions, 959 events. 538/959 cut-off events. For 42829/42829 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4119 event pairs, 15 based on Foata normal form. 36/995 useless extension candidates. Maximal degree in co-relation 8675. Up to 330 conditions per place. [2023-01-28 06:27:19,295 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 60 selfloop transitions, 121 changer transitions 66/247 dead transitions. [2023-01-28 06:27:19,295 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 165 places, 247 transitions, 4924 flow [2023-01-28 06:27:19,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2023-01-28 06:27:19,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2023-01-28 06:27:19,299 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 2018 transitions. [2023-01-28 06:27:19,300 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4520609318996416 [2023-01-28 06:27:19,300 INFO L72 ComplementDD]: Start complementDD. Operand 36 states and 2018 transitions. [2023-01-28 06:27:19,300 INFO L73 IsDeterministic]: Start isDeterministic. Operand 36 states and 2018 transitions. [2023-01-28 06:27:19,301 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:19,301 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 36 states and 2018 transitions. [2023-01-28 06:27:19,304 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 37 states, 36 states have (on average 56.05555555555556) internal successors, (2018), 36 states have internal predecessors, (2018), 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) [2023-01-28 06:27:19,307 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-01-28 06:27:19,308 INFO L81 ComplementDD]: Finished complementDD. Result has 37 states, 37 states have (on average 124.0) internal successors, (4588), 37 states have internal predecessors, (4588), 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) [2023-01-28 06:27:19,308 INFO L175 Difference]: Start difference. First operand has 130 places, 101 transitions, 1712 flow. Second operand 36 states and 2018 transitions. [2023-01-28 06:27:19,308 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 165 places, 247 transitions, 4924 flow [2023-01-28 06:27:19,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 151 places, 247 transitions, 4317 flow, removed 265 selfloop flow, removed 14 redundant places. [2023-01-28 06:27:19,348 INFO L231 Difference]: Finished difference. Result has 169 places, 138 transitions, 2757 flow [2023-01-28 06:27:19,348 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1363, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=101, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=14, PETRI_DIFFERENCE_SUBTRAHEND_STATES=36, PETRI_FLOW=2757, PETRI_PLACES=169, PETRI_TRANSITIONS=138} [2023-01-28 06:27:19,349 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 151 predicate places. [2023-01-28 06:27:19,349 INFO L495 AbstractCegarLoop]: Abstraction has has 169 places, 138 transitions, 2757 flow [2023-01-28 06:27:19,349 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 52.5) internal successors, (1155), 22 states have internal predecessors, (1155), 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) [2023-01-28 06:27:19,349 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:19,349 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:19,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:19,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-01-28 06:27:19,561 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:19,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:19,561 INFO L85 PathProgramCache]: Analyzing trace with hash 2052641735, now seen corresponding path program 9 times [2023-01-28 06:27:19,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:19,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467318028] [2023-01-28 06:27:19,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:19,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:19,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:19,819 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:19,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467318028] [2023-01-28 06:27:19,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467318028] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:19,819 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054751456] [2023-01-28 06:27:19,819 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-28 06:27:19,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:19,819 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:19,820 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:27:19,835 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-28 06:27:19,893 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 7 check-sat command(s) [2023-01-28 06:27:19,893 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:19,894 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 06:27:19,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:19,949 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:19,949 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:20,186 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:20,186 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054751456] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:20,186 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:20,186 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-01-28 06:27:20,186 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77353099] [2023-01-28 06:27:20,187 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:20,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 06:27:20,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:20,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 06:27:20,188 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=256, Invalid=866, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 06:27:20,189 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:20,190 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 169 places, 138 transitions, 2757 flow. Second operand has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 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) [2023-01-28 06:27:20,190 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:20,190 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:20,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:20,944 INFO L130 PetriNetUnfolder]: 674/1231 cut-off events. [2023-01-28 06:27:20,944 INFO L131 PetriNetUnfolder]: For 90353/90353 co-relation queries the response was YES. [2023-01-28 06:27:20,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13996 conditions, 1231 events. 674/1231 cut-off events. For 90353/90353 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 5569 event pairs, 99 based on Foata normal form. 24/1255 useless extension candidates. Maximal degree in co-relation 13921. Up to 466 conditions per place. [2023-01-28 06:27:20,953 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 113 selfloop transitions, 100 changer transitions 71/284 dead transitions. [2023-01-28 06:27:20,954 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 284 transitions, 6988 flow [2023-01-28 06:27:20,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2023-01-28 06:27:20,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2023-01-28 06:27:20,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 2109 transitions. [2023-01-28 06:27:20,956 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4475806451612903 [2023-01-28 06:27:20,956 INFO L72 ComplementDD]: Start complementDD. Operand 38 states and 2109 transitions. [2023-01-28 06:27:20,956 INFO L73 IsDeterministic]: Start isDeterministic. Operand 38 states and 2109 transitions. [2023-01-28 06:27:20,957 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:20,957 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 38 states and 2109 transitions. [2023-01-28 06:27:20,959 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 39 states, 38 states have (on average 55.5) internal successors, (2109), 38 states have internal predecessors, (2109), 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) [2023-01-28 06:27:20,963 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 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) [2023-01-28 06:27:20,963 INFO L81 ComplementDD]: Finished complementDD. Result has 39 states, 39 states have (on average 124.0) internal successors, (4836), 39 states have internal predecessors, (4836), 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) [2023-01-28 06:27:20,963 INFO L175 Difference]: Start difference. First operand has 169 places, 138 transitions, 2757 flow. Second operand 38 states and 2109 transitions. [2023-01-28 06:27:20,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 284 transitions, 6988 flow [2023-01-28 06:27:21,100 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 284 transitions, 5397 flow, removed 763 selfloop flow, removed 13 redundant places. [2023-01-28 06:27:21,104 INFO L231 Difference]: Finished difference. Result has 201 places, 172 transitions, 3027 flow [2023-01-28 06:27:21,104 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=1998, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=38, PETRI_FLOW=3027, PETRI_PLACES=201, PETRI_TRANSITIONS=172} [2023-01-28 06:27:21,105 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 183 predicate places. [2023-01-28 06:27:21,105 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 172 transitions, 3027 flow [2023-01-28 06:27:21,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 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) [2023-01-28 06:27:21,106 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:21,106 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:21,113 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:21,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:21,311 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:21,311 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:21,311 INFO L85 PathProgramCache]: Analyzing trace with hash 1571369213, now seen corresponding path program 10 times [2023-01-28 06:27:21,311 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:21,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084130571] [2023-01-28 06:27:21,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:21,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:21,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:21,584 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:21,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084130571] [2023-01-28 06:27:21,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084130571] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:21,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [787941088] [2023-01-28 06:27:21,584 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-28 06:27:21,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:21,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:21,585 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:27:21,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-28 06:27:21,642 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-28 06:27:21,643 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:21,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 06:27:21,644 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:21,727 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:21,979 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:21,980 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [787941088] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:21,980 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:21,980 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 33 [2023-01-28 06:27:21,980 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117589949] [2023-01-28 06:27:21,980 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:21,980 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-01-28 06:27:21,980 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:21,981 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-01-28 06:27:21,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=206, Invalid=984, Unknown=0, NotChecked=0, Total=1190 [2023-01-28 06:27:21,982 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:21,983 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 172 transitions, 3027 flow. Second operand has 35 states, 35 states have (on average 52.34285714285714) internal successors, (1832), 35 states have internal predecessors, (1832), 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) [2023-01-28 06:27:21,983 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:21,983 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:21,983 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:22,959 INFO L130 PetriNetUnfolder]: 858/1595 cut-off events. [2023-01-28 06:27:22,959 INFO L131 PetriNetUnfolder]: For 147518/147518 co-relation queries the response was YES. [2023-01-28 06:27:22,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17908 conditions, 1595 events. 858/1595 cut-off events. For 147518/147518 co-relation queries the response was YES. Maximal size of possible extension queue 54. Compared 7851 event pairs, 44 based on Foata normal form. 32/1627 useless extension candidates. Maximal degree in co-relation 17829. Up to 646 conditions per place. [2023-01-28 06:27:22,977 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 88 selfloop transitions, 180 changer transitions 83/351 dead transitions. [2023-01-28 06:27:22,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 244 places, 351 transitions, 7742 flow [2023-01-28 06:27:22,977 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2023-01-28 06:27:22,977 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2023-01-28 06:27:22,979 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 2450 transitions. [2023-01-28 06:27:22,980 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44904692082111436 [2023-01-28 06:27:22,980 INFO L72 ComplementDD]: Start complementDD. Operand 44 states and 2450 transitions. [2023-01-28 06:27:22,980 INFO L73 IsDeterministic]: Start isDeterministic. Operand 44 states and 2450 transitions. [2023-01-28 06:27:22,981 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:22,981 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 44 states and 2450 transitions. [2023-01-28 06:27:22,984 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 45 states, 44 states have (on average 55.68181818181818) internal successors, (2450), 44 states have internal predecessors, (2450), 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) [2023-01-28 06:27:22,988 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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) [2023-01-28 06:27:22,989 INFO L81 ComplementDD]: Finished complementDD. Result has 45 states, 45 states have (on average 124.0) internal successors, (5580), 45 states have internal predecessors, (5580), 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) [2023-01-28 06:27:22,989 INFO L175 Difference]: Start difference. First operand has 201 places, 172 transitions, 3027 flow. Second operand 44 states and 2450 transitions. [2023-01-28 06:27:22,989 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 244 places, 351 transitions, 7742 flow [2023-01-28 06:27:23,220 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 227 places, 351 transitions, 7093 flow, removed 257 selfloop flow, removed 17 redundant places. [2023-01-28 06:27:23,224 INFO L231 Difference]: Finished difference. Result has 238 places, 221 transitions, 4322 flow [2023-01-28 06:27:23,225 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=2562, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=172, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=139, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=44, PETRI_FLOW=4322, PETRI_PLACES=238, PETRI_TRANSITIONS=221} [2023-01-28 06:27:23,225 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 220 predicate places. [2023-01-28 06:27:23,225 INFO L495 AbstractCegarLoop]: Abstraction has has 238 places, 221 transitions, 4322 flow [2023-01-28 06:27:23,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 52.34285714285714) internal successors, (1832), 35 states have internal predecessors, (1832), 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) [2023-01-28 06:27:23,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:23,226 INFO L208 CegarLoopForPetriNet]: trace histogram [7, 7, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:23,232 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:23,430 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:23,430 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:23,431 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:23,431 INFO L85 PathProgramCache]: Analyzing trace with hash -1553415691, now seen corresponding path program 11 times [2023-01-28 06:27:23,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:23,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [467882962] [2023-01-28 06:27:23,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:23,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:23,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:23,591 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:23,591 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [467882962] [2023-01-28 06:27:23,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [467882962] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:23,592 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1283122022] [2023-01-28 06:27:23,592 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 06:27:23,592 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:23,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:23,593 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:27:23,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-28 06:27:23,649 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 7 check-sat command(s) [2023-01-28 06:27:23,649 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:23,650 INFO L263 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 20 conjunts are in the unsatisfiable core [2023-01-28 06:27:23,651 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:23,685 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:23,685 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:23,865 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:23,866 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1283122022] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:23,866 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:23,866 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 32 [2023-01-28 06:27:23,866 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [600283570] [2023-01-28 06:27:23,866 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:23,866 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-01-28 06:27:23,866 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:23,867 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-01-28 06:27:23,867 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=903, Unknown=0, NotChecked=0, Total=1122 [2023-01-28 06:27:23,868 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:23,874 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 221 transitions, 4322 flow. Second operand has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 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) [2023-01-28 06:27:23,874 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:23,874 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:23,874 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:24,869 INFO L130 PetriNetUnfolder]: 1022/1891 cut-off events. [2023-01-28 06:27:24,869 INFO L131 PetriNetUnfolder]: For 245129/245129 co-relation queries the response was YES. [2023-01-28 06:27:24,878 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24168 conditions, 1891 events. 1022/1891 cut-off events. For 245129/245129 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9476 event pairs, 16 based on Foata normal form. 32/1923 useless extension candidates. Maximal degree in co-relation 24077. Up to 778 conditions per place. [2023-01-28 06:27:24,887 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 81 selfloop transitions, 233 changer transitions 67/381 dead transitions. [2023-01-28 06:27:24,887 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 381 transitions, 9460 flow [2023-01-28 06:27:24,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2023-01-28 06:27:24,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2023-01-28 06:27:24,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 2343 transitions. [2023-01-28 06:27:24,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4498847926267281 [2023-01-28 06:27:24,899 INFO L72 ComplementDD]: Start complementDD. Operand 42 states and 2343 transitions. [2023-01-28 06:27:24,899 INFO L73 IsDeterministic]: Start isDeterministic. Operand 42 states and 2343 transitions. [2023-01-28 06:27:24,900 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:24,900 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 42 states and 2343 transitions. [2023-01-28 06:27:24,902 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 43 states, 42 states have (on average 55.785714285714285) internal successors, (2343), 42 states have internal predecessors, (2343), 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) [2023-01-28 06:27:24,906 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 43 states, 43 states have (on average 124.0) internal successors, (5332), 43 states have internal predecessors, (5332), 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) [2023-01-28 06:27:24,906 INFO L81 ComplementDD]: Finished complementDD. Result has 43 states, 43 states have (on average 124.0) internal successors, (5332), 43 states have internal predecessors, (5332), 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) [2023-01-28 06:27:24,906 INFO L175 Difference]: Start difference. First operand has 238 places, 221 transitions, 4322 flow. Second operand 42 states and 2343 transitions. [2023-01-28 06:27:24,906 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 279 places, 381 transitions, 9460 flow [2023-01-28 06:27:25,243 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 261 places, 381 transitions, 8550 flow, removed 365 selfloop flow, removed 18 redundant places. [2023-01-28 06:27:25,248 INFO L231 Difference]: Finished difference. Result has 275 places, 258 transitions, 5412 flow [2023-01-28 06:27:25,248 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=3436, PETRI_DIFFERENCE_MINUEND_PLACES=220, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=42, PETRI_FLOW=5412, PETRI_PLACES=275, PETRI_TRANSITIONS=258} [2023-01-28 06:27:25,248 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 257 predicate places. [2023-01-28 06:27:25,248 INFO L495 AbstractCegarLoop]: Abstraction has has 275 places, 258 transitions, 5412 flow [2023-01-28 06:27:25,249 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 34 states have (on average 52.3235294117647) internal successors, (1779), 34 states have internal predecessors, (1779), 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) [2023-01-28 06:27:25,249 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:25,249 INFO L208 CegarLoopForPetriNet]: trace histogram [8, 8, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:25,253 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:25,453 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-01-28 06:27:25,454 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:25,454 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:25,454 INFO L85 PathProgramCache]: Analyzing trace with hash -1171636794, now seen corresponding path program 12 times [2023-01-28 06:27:25,454 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:25,454 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1483929118] [2023-01-28 06:27:25,454 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:25,454 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:25,667 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:25,667 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1483929118] [2023-01-28 06:27:25,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1483929118] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:25,667 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742677971] [2023-01-28 06:27:25,668 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2023-01-28 06:27:25,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:25,668 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:25,681 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:27:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-28 06:27:25,770 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 8 check-sat command(s) [2023-01-28 06:27:25,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 06:27:25,771 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 23 conjunts are in the unsatisfiable core [2023-01-28 06:27:25,772 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:25,826 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:25,826 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:26,045 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 0 proven. 56 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:26,046 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742677971] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:26,046 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:26,046 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 18, 18] total 36 [2023-01-28 06:27:26,046 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222031832] [2023-01-28 06:27:26,046 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:26,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2023-01-28 06:27:26,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:26,047 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2023-01-28 06:27:26,047 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=320, Invalid=1086, Unknown=0, NotChecked=0, Total=1406 [2023-01-28 06:27:26,048 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:26,049 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 275 places, 258 transitions, 5412 flow. Second operand has 38 states, 38 states have (on average 52.28947368421053) internal successors, (1987), 38 states have internal predecessors, (1987), 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) [2023-01-28 06:27:26,049 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:26,049 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:26,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:26,957 INFO L130 PetriNetUnfolder]: 1034/1911 cut-off events. [2023-01-28 06:27:26,957 INFO L131 PetriNetUnfolder]: For 341708/341708 co-relation queries the response was YES. [2023-01-28 06:27:26,967 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26921 conditions, 1911 events. 1034/1911 cut-off events. For 341708/341708 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 9630 event pairs, 20 based on Foata normal form. 20/1931 useless extension candidates. Maximal degree in co-relation 26815. Up to 774 conditions per place. [2023-01-28 06:27:26,977 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 68 selfloop transitions, 243 changer transitions 74/385 dead transitions. [2023-01-28 06:27:26,977 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 314 places, 385 transitions, 10213 flow [2023-01-28 06:27:26,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2023-01-28 06:27:26,983 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2023-01-28 06:27:26,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 2231 transitions. [2023-01-28 06:27:26,985 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44979838709677417 [2023-01-28 06:27:26,985 INFO L72 ComplementDD]: Start complementDD. Operand 40 states and 2231 transitions. [2023-01-28 06:27:26,985 INFO L73 IsDeterministic]: Start isDeterministic. Operand 40 states and 2231 transitions. [2023-01-28 06:27:26,985 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:26,985 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 40 states and 2231 transitions. [2023-01-28 06:27:26,988 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 41 states, 40 states have (on average 55.775) internal successors, (2231), 40 states have internal predecessors, (2231), 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) [2023-01-28 06:27:26,991 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 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) [2023-01-28 06:27:26,991 INFO L81 ComplementDD]: Finished complementDD. Result has 41 states, 41 states have (on average 124.0) internal successors, (5084), 41 states have internal predecessors, (5084), 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) [2023-01-28 06:27:26,991 INFO L175 Difference]: Start difference. First operand has 275 places, 258 transitions, 5412 flow. Second operand 40 states and 2231 transitions. [2023-01-28 06:27:26,991 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 314 places, 385 transitions, 10213 flow [2023-01-28 06:27:27,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 294 places, 385 transitions, 8925 flow, removed 532 selfloop flow, removed 20 redundant places. [2023-01-28 06:27:27,733 INFO L231 Difference]: Finished difference. Result has 301 places, 267 transitions, 5360 flow [2023-01-28 06:27:27,733 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4214, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=258, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=235, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=40, PETRI_FLOW=5360, PETRI_PLACES=301, PETRI_TRANSITIONS=267} [2023-01-28 06:27:27,733 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 283 predicate places. [2023-01-28 06:27:27,733 INFO L495 AbstractCegarLoop]: Abstraction has has 301 places, 267 transitions, 5360 flow [2023-01-28 06:27:27,734 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 38 states have (on average 52.28947368421053) internal successors, (1987), 38 states have internal predecessors, (1987), 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) [2023-01-28 06:27:27,734 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:27,734 INFO L208 CegarLoopForPetriNet]: trace histogram [9, 9, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:27,741 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-01-28 06:27:27,939 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-01-28 06:27:27,939 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:27,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:27,939 INFO L85 PathProgramCache]: Analyzing trace with hash -1027063943, now seen corresponding path program 13 times [2023-01-28 06:27:27,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:27,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1383470183] [2023-01-28 06:27:27,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:27,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:27,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:28,154 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:28,154 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 06:27:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1383470183] [2023-01-28 06:27:28,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1383470183] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 06:27:28,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376633289] [2023-01-28 06:27:28,154 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2023-01-28 06:27:28,154 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 06:27:28,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 06:27:28,155 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-28 06:27:28,157 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-01-28 06:27:28,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 06:27:28,217 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 24 conjunts are in the unsatisfiable core [2023-01-28 06:27:28,218 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 06:27:28,276 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:28,276 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 06:27:28,455 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 0 proven. 72 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 06:27:28,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376633289] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 06:27:28,455 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 06:27:28,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 20] total 26 [2023-01-28 06:27:28,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1491923958] [2023-01-28 06:27:28,455 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 06:27:28,455 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2023-01-28 06:27:28,455 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 06:27:28,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2023-01-28 06:27:28,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=173, Invalid=583, Unknown=0, NotChecked=0, Total=756 [2023-01-28 06:27:28,457 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 124 [2023-01-28 06:27:28,457 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 301 places, 267 transitions, 5360 flow. Second operand has 28 states, 28 states have (on average 52.42857142857143) internal successors, (1468), 28 states have internal predecessors, (1468), 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) [2023-01-28 06:27:28,457 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 06:27:28,457 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 124 [2023-01-28 06:27:28,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 06:27:29,623 INFO L130 PetriNetUnfolder]: 1134/2087 cut-off events. [2023-01-28 06:27:29,623 INFO L131 PetriNetUnfolder]: For 405135/405135 co-relation queries the response was YES. [2023-01-28 06:27:29,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30427 conditions, 2087 events. 1134/2087 cut-off events. For 405135/405135 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 10528 event pairs, 15 based on Foata normal form. 20/2107 useless extension candidates. Maximal degree in co-relation 30315. Up to 834 conditions per place. [2023-01-28 06:27:29,640 INFO L137 encePairwiseOnDemand]: 119/124 looper letters, 80 selfloop transitions, 270 changer transitions 90/440 dead transitions. [2023-01-28 06:27:29,641 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 440 transitions, 11869 flow [2023-01-28 06:27:29,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 48 states. [2023-01-28 06:27:29,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2023-01-28 06:27:29,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 2680 transitions. [2023-01-28 06:27:29,643 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45026881720430106 [2023-01-28 06:27:29,643 INFO L72 ComplementDD]: Start complementDD. Operand 48 states and 2680 transitions. [2023-01-28 06:27:29,643 INFO L73 IsDeterministic]: Start isDeterministic. Operand 48 states and 2680 transitions. [2023-01-28 06:27:29,644 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 06:27:29,644 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 48 states and 2680 transitions. [2023-01-28 06:27:29,646 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 49 states, 48 states have (on average 55.833333333333336) internal successors, (2680), 48 states have internal predecessors, (2680), 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) [2023-01-28 06:27:29,650 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 49 states, 49 states have (on average 124.0) internal successors, (6076), 49 states have internal predecessors, (6076), 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) [2023-01-28 06:27:29,651 INFO L81 ComplementDD]: Finished complementDD. Result has 49 states, 49 states have (on average 124.0) internal successors, (6076), 49 states have internal predecessors, (6076), 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) [2023-01-28 06:27:29,651 INFO L175 Difference]: Start difference. First operand has 301 places, 267 transitions, 5360 flow. Second operand 48 states and 2680 transitions. [2023-01-28 06:27:29,651 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 348 places, 440 transitions, 11869 flow [2023-01-28 06:27:30,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 315 places, 440 transitions, 10278 flow, removed 582 selfloop flow, removed 33 redundant places. [2023-01-28 06:27:30,346 INFO L231 Difference]: Finished difference. Result has 325 places, 292 transitions, 6204 flow [2023-01-28 06:27:30,347 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=124, PETRI_DIFFERENCE_MINUEND_FLOW=4445, PETRI_DIFFERENCE_MINUEND_PLACES=268, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=246, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=19, PETRI_DIFFERENCE_SUBTRAHEND_STATES=48, PETRI_FLOW=6204, PETRI_PLACES=325, PETRI_TRANSITIONS=292} [2023-01-28 06:27:30,347 INFO L281 CegarLoopForPetriNet]: 18 programPoint places, 307 predicate places. [2023-01-28 06:27:30,347 INFO L495 AbstractCegarLoop]: Abstraction has has 325 places, 292 transitions, 6204 flow [2023-01-28 06:27:30,347 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 28 states have (on average 52.42857142857143) internal successors, (1468), 28 states have internal predecessors, (1468), 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) [2023-01-28 06:27:30,348 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 06:27:30,348 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 06:27:30,354 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-01-28 06:27:30,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2023-01-28 06:27:30,553 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-01-28 06:27:30,553 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 06:27:30,553 INFO L85 PathProgramCache]: Analyzing trace with hash -697905322, now seen corresponding path program 14 times [2023-01-28 06:27:30,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 06:27:30,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [659486054] [2023-01-28 06:27:30,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 06:27:30,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 06:27:30,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:27:30,568 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-01-28 06:27:30,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-01-28 06:27:30,622 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-01-28 06:27:30,622 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-01-28 06:27:30,623 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-01-28 06:27:30,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-01-28 06:27:30,624 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-01-28 06:27:30,624 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-01-28 06:27:30,624 INFO L445 BasicCegarLoop]: Path program histogram: [14, 2, 1] [2023-01-28 06:27:30,627 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 06:27:30,627 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 06:27:30,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 06:27:30 BasicIcfg [2023-01-28 06:27:30,680 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 06:27:30,680 INFO L158 Benchmark]: Toolchain (without parser) took 19516.48ms. Allocated memory was 469.8MB in the beginning and 677.4MB in the end (delta: 207.6MB). Free memory was 427.8MB in the beginning and 372.0MB in the end (delta: 55.8MB). Peak memory consumption was 264.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 316.7MB. Free memory is still 264.5MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: CACSL2BoogieTranslator took 344.47ms. Allocated memory is still 469.8MB. Free memory was 427.8MB in the beginning and 408.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: Boogie Procedure Inliner took 39.55ms. Allocated memory is still 469.8MB. Free memory was 408.7MB in the beginning and 406.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: Boogie Preprocessor took 29.76ms. Allocated memory is still 469.8MB. Free memory was 406.6MB in the beginning and 405.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: RCFGBuilder took 345.30ms. Allocated memory is still 469.8MB. Free memory was 405.1MB in the beginning and 392.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,681 INFO L158 Benchmark]: TraceAbstraction took 18752.54ms. Allocated memory was 469.8MB in the beginning and 677.4MB in the end (delta: 207.6MB). Free memory was 391.8MB in the beginning and 372.0MB in the end (delta: 19.8MB). Peak memory consumption was 228.5MB. Max. memory is 16.0GB. [2023-01-28 06:27:30,682 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 316.7MB. Free memory is still 264.5MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 344.47ms. Allocated memory is still 469.8MB. Free memory was 427.8MB in the beginning and 408.7MB in the end (delta: 19.2MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 39.55ms. Allocated memory is still 469.8MB. Free memory was 408.7MB in the beginning and 406.9MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 29.76ms. Allocated memory is still 469.8MB. Free memory was 406.6MB in the beginning and 405.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 345.30ms. Allocated memory is still 469.8MB. Free memory was 405.1MB in the beginning and 392.4MB in the end (delta: 12.7MB). Peak memory consumption was 12.6MB. Max. memory is 16.0GB. * TraceAbstraction took 18752.54ms. Allocated memory was 469.8MB in the beginning and 677.4MB in the end (delta: 207.6MB). Free memory was 391.8MB in the beginning and 372.0MB in the end (delta: 19.8MB). Peak memory consumption was 228.5MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 66 PlacesBefore, 18 PlacesAfterwards, 64 TransitionsBefore, 14 TransitionsAfterwards, 1078 CoEnabledTransitionPairs, 5 FixpointIterations, 18 TrivialSequentialCompositions, 30 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 2 ChoiceCompositions, 58 TotalNumberOfCompositions, 999 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 856, independent: 829, independent conditional: 0, independent unconditional: 829, dependent: 27, dependent conditional: 0, dependent unconditional: 27, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 590, independent: 578, independent conditional: 0, independent unconditional: 578, dependent: 12, dependent conditional: 0, dependent unconditional: 12, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 856, independent: 251, independent conditional: 0, independent unconditional: 251, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 590, unknown conditional: 0, unknown unconditional: 590] , Statistics on independence cache: Total cache size (in pairs): 13, Positive cache size: 10, Positive conditional cache size: 0, Positive unconditional cache size: 10, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 722]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L694] 0 int i = 3, j = 6; [L712] 0 pthread_t id1, id2; [L713] FCALL, FORK 0 pthread_create(&id1, ((void *)0), t1, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, pthread_create(&id1, ((void *)0), t1, ((void *)0))=6] [L696] 1 int k = 0; VAL [arg={0:0}, arg={0:0}, i=3, j=6, k=0] [L714] FCALL, FORK 0 pthread_create(&id2, ((void *)0), t2, ((void *)0)) VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, i=3, id1={5:0}, id2={3:0}, j=6, k=0, pthread_create(&id2, ((void *)0), t2, ((void *)0))=7] [L704] 2 int k = 0; VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=3, j=6, k=0, k=0] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=6, k=0, k=1] [L716] 0 int condI = i >= (2*10 +6); VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, i=7, id1={5:0}, id2={3:0}, j=6, k=0, k=1] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=7, j=8, k=1, k=1] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=8, k=1, k=2] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=9, j=10, k=2, k=2] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=10, k=2, k=3] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=11, j=12, k=3, k=3] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=12, k=3, k=4] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=13, j=14, k=4, k=4] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=14, k=4, k=5] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=15, j=16, k=5, k=5] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=16, k=5, k=6] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=17, j=18, k=6, k=6] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=18, k=6, k=7] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=19, j=20, k=7, k=7] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=20, k=7, k=8] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=21, j=22, k=8, k=8] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=22, k=8, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=23, j=24, k=9, k=9] [L696] COND TRUE 1 k < 10 [L698] 1 i = j + 1 [L696] 1 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=24, k=10, k=9] [L704] COND TRUE 2 k < 10 [L706] 2 j = i + 1 [L704] 2 k++ VAL [arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, i=25, j=26, k=10, k=10] [L719] 0 int condJ = j >= (2*10 +6); [L721] COND TRUE 0 condI || condJ [L722] 0 reach_error() VAL [\old(argc)=51, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, argc=51, argv={49:50}, argv={49:50}, condI=0, condJ=1, i=25, id1={5:0}, id2={3:0}, j=26, k=10, k=10] - UnprovableResult [Line: 713]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 714]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 84 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: 18.6s, OverallIterations: 17, TraceHistogramMax: 10, PathProgramHistogramMax: 14, EmptinessCheckTime: 0.0s, AutomataDifference: 9.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.4s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 3859 SdHoareTripleChecker+Valid, 1.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 3859 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 1.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 368 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 3028 IncrementalHoareTripleChecker+Invalid, 3396 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 368 mSolverCounterUnsat, 0 mSDtfsCounter, 3028 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 762 GetRequests, 215 SyntacticMatches, 14 SemanticMatches, 533 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8624 ImplicationChecksByTransitivity, 5.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=6204occurred in iteration=16, InterpolantAutomatonStates: 355, 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: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.1s InterpolantComputationTime, 436 NumberOfCodeBlocks, 436 NumberOfCodeBlocksAsserted, 51 NumberOfCheckSat, 550 ConstructedInterpolants, 0 QuantifiedInterpolants, 2322 SizeOfPredicates, 98 NumberOfNonLiveVariables, 1590 ConjunctsInSsa, 160 ConjunctsInUnsatCore, 36 InterpolantComputations, 6 PerfectInterpolantSequences, 0/816 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-01-28 06:27:30,706 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 Received shutdown request...