/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 BEFORE -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -i ../../../trunk/examples/svcomp/pthread/stack_longest-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-b8dbc81 [2023-01-27 23:52:20,582 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-01-27 23:52:20,584 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-01-27 23:52:20,619 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-01-27 23:52:20,619 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-01-27 23:52:20,620 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-01-27 23:52:20,621 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-01-27 23:52:20,622 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-01-27 23:52:20,623 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-01-27 23:52:20,623 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-01-27 23:52:20,624 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-01-27 23:52:20,625 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-01-27 23:52:20,625 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-01-27 23:52:20,625 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-01-27 23:52:20,626 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-01-27 23:52:20,627 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-01-27 23:52:20,627 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-01-27 23:52:20,628 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-01-27 23:52:20,634 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-01-27 23:52:20,639 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-01-27 23:52:20,642 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-01-27 23:52:20,646 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-01-27 23:52:20,647 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-01-27 23:52:20,647 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-01-27 23:52:20,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2023-01-27 23:52:20,653 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-01-27 23:52:20,653 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-01-27 23:52:20,654 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-01-27 23:52:20,657 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-PN-VariableLbe.epf [2023-01-27 23:52:20,683 INFO L113 SettingsManager]: Loading preferences was successful [2023-01-27 23:52:20,683 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-01-27 23:52:20,684 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-01-27 23:52:20,684 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-01-27 23:52:20,685 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-01-27 23:52:20,685 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-01-27 23:52:20,685 INFO L138 SettingsManager]: * Use SBE=true [2023-01-27 23:52:20,685 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-01-27 23:52:20,685 INFO L138 SettingsManager]: * sizeof long=4 [2023-01-27 23:52:20,685 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-01-27 23:52:20,686 INFO L138 SettingsManager]: * sizeof long double=12 [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Use constant arrays=true [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-01-27 23:52:20,687 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * To the following directory=./dump/ [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:52:20,687 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-01-27 23:52:20,687 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-01-27 23:52:20,688 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-01-27 23:52:20,688 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-01-27 23:52:20,688 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-01-27 23:52:20,688 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: When to check the insufficient erros location relative to the other error locations -> BEFORE [2023-01-27 23:52:20,875 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-01-27 23:52:20,889 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-01-27 23:52:20,891 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-01-27 23:52:20,892 INFO L271 PluginConnector]: Initializing CDTParser... [2023-01-27 23:52:20,892 INFO L275 PluginConnector]: CDTParser initialized [2023-01-27 23:52:20,892 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread/stack_longest-2.i [2023-01-27 23:52:21,837 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-01-27 23:52:22,045 INFO L351 CDTParser]: Found 1 translation units. [2023-01-27 23:52:22,045 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread/stack_longest-2.i [2023-01-27 23:52:22,053 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a062a7e8/31eff5de11624c50a20f64f4ba8b6072/FLAG296620490 [2023-01-27 23:52:22,063 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2a062a7e8/31eff5de11624c50a20f64f4ba8b6072 [2023-01-27 23:52:22,065 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-01-27 23:52:22,066 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2023-01-27 23:52:22,066 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-01-27 23:52:22,066 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-01-27 23:52:22,068 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-01-27 23:52:22,069 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5644d5f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22, skipping insertion in model container [2023-01-27 23:52:22,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,078 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-01-27 23:52:22,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-01-27 23:52:22,436 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/stack_longest-2.i[41530,41543] [2023-01-27 23:52:22,459 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:52:22,467 INFO L203 MainTranslator]: Completed pre-run [2023-01-27 23:52:22,495 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/stack_longest-2.i[41530,41543] [2023-01-27 23:52:22,501 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-01-27 23:52:22,539 INFO L208 MainTranslator]: Completed translation [2023-01-27 23:52:22,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22 WrapperNode [2023-01-27 23:52:22,541 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-01-27 23:52:22,542 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-01-27 23:52:22,542 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-01-27 23:52:22,542 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-01-27 23:52:22,546 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,570 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,594 INFO L138 Inliner]: procedures = 277, calls = 38, calls flagged for inlining = 11, calls inlined = 11, statements flattened = 149 [2023-01-27 23:52:22,594 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-01-27 23:52:22,595 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-01-27 23:52:22,595 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-01-27 23:52:22,595 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-01-27 23:52:22,601 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,601 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,614 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,614 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,618 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,620 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,621 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,622 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,624 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-01-27 23:52:22,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-01-27 23:52:22,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-01-27 23:52:22,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-01-27 23:52:22,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (1/1) ... [2023-01-27 23:52:22,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-01-27 23:52:22,635 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:22,678 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-01-27 23:52:22,689 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-01-27 23:52:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure t1 [2023-01-27 23:52:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure t1 [2023-01-27 23:52:22,712 INFO L130 BoogieDeclarations]: Found specification of procedure t2 [2023-01-27 23:52:22,712 INFO L138 BoogieDeclarations]: Found implementation of procedure t2 [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-01-27 23:52:22,713 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-01-27 23:52:22,713 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-01-27 23:52:22,714 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-01-27 23:52:22,801 INFO L236 CfgBuilder]: Building ICFG [2023-01-27 23:52:22,802 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-01-27 23:52:22,977 INFO L277 CfgBuilder]: Performing block encoding [2023-01-27 23:52:22,982 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-01-27 23:52:22,982 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-01-27 23:52:22,983 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:52:22 BoogieIcfgContainer [2023-01-27 23:52:22,983 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-01-27 23:52:22,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-01-27 23:52:22,985 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-01-27 23:52:22,987 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-01-27 23:52:22,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 11:52:22" (1/3) ... [2023-01-27 23:52:22,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42352527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:52:22, skipping insertion in model container [2023-01-27 23:52:22,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 11:52:22" (2/3) ... [2023-01-27 23:52:22,987 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42352527 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 11:52:22, skipping insertion in model container [2023-01-27 23:52:22,987 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 11:52:22" (3/3) ... [2023-01-27 23:52:22,989 INFO L112 eAbstractionObserver]: Analyzing ICFG stack_longest-2.i [2023-01-27 23:52:23,003 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-01-27 23:52:23,004 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-01-27 23:52:23,004 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-01-27 23:52:23,112 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-01-27 23:52:23,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 151 transitions, 318 flow [2023-01-27 23:52:23,217 INFO L130 PetriNetUnfolder]: 10/149 cut-off events. [2023-01-27 23:52:23,217 INFO L131 PetriNetUnfolder]: For 2/2 co-relation queries the response was YES. [2023-01-27 23:52:23,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 158 conditions, 149 events. 10/149 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 348 event pairs, 0 based on Foata normal form. 0/137 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:52:23,229 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 151 transitions, 318 flow [2023-01-27 23:52:23,234 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 140 transitions, 289 flow [2023-01-27 23:52:23,236 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-01-27 23:52:23,243 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 140 transitions, 289 flow [2023-01-27 23:52:23,249 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 140 transitions, 289 flow [2023-01-27 23:52:23,249 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 140 transitions, 289 flow [2023-01-27 23:52:23,290 INFO L130 PetriNetUnfolder]: 10/140 cut-off events. [2023-01-27 23:52:23,290 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:52:23,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148 conditions, 140 events. 10/140 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 300 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 111. Up to 3 conditions per place. [2023-01-27 23:52:23,296 INFO L119 LiptonReduction]: Number of co-enabled transitions 6492 [2023-01-27 23:52:25,877 INFO L134 LiptonReduction]: Checked pairs total: 8978 [2023-01-27 23:52:25,877 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-01-27 23:52:25,894 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-01-27 23:52:25,903 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;@9805f16, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-01-27 23:52:25,904 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-01-27 23:52:25,909 INFO L130 PetriNetUnfolder]: 1/15 cut-off events. [2023-01-27 23:52:25,909 INFO L131 PetriNetUnfolder]: For 1/1 co-relation queries the response was YES. [2023-01-27 23:52:25,909 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:25,909 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-01-27 23:52:25,910 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:25,913 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:25,913 INFO L85 PathProgramCache]: Analyzing trace with hash 920078475, now seen corresponding path program 1 times [2023-01-27 23:52:25,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:25,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2030659848] [2023-01-27 23:52:25,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:25,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:26,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:26,110 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:26,110 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:26,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2030659848] [2023-01-27 23:52:26,111 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2030659848] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:26,111 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:26,111 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:52:26,112 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217416091] [2023-01-27 23:52:26,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:26,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:52:26,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:26,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:52:26,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:52:26,134 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2023-01-27 23:52:26,135 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 73 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,136 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:26,136 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2023-01-27 23:52:26,136 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:26,242 INFO L130 PetriNetUnfolder]: 661/1082 cut-off events. [2023-01-27 23:52:26,242 INFO L131 PetriNetUnfolder]: For 57/57 co-relation queries the response was YES. [2023-01-27 23:52:26,243 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1082 events. 661/1082 cut-off events. For 57/57 co-relation queries the response was YES. Maximal size of possible extension queue 42. Compared 4016 event pairs, 283 based on Foata normal form. 0/854 useless extension candidates. Maximal degree in co-relation 2034. Up to 687 conditions per place. [2023-01-27 23:52:26,248 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 50 selfloop transitions, 3 changer transitions 0/53 dead transitions. [2023-01-27 23:52:26,248 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 53 transitions, 227 flow [2023-01-27 23:52:26,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:52:26,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:52:26,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 436 transitions. [2023-01-27 23:52:26,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5153664302600472 [2023-01-27 23:52:26,258 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 436 transitions. [2023-01-27 23:52:26,258 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 436 transitions. [2023-01-27 23:52:26,259 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:26,260 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 436 transitions. [2023-01-27 23:52:26,264 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,266 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,267 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,268 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 73 flow. Second operand 3 states and 436 transitions. [2023-01-27 23:52:26,269 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 53 transitions, 227 flow [2023-01-27 23:52:26,270 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 53 transitions, 219 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-01-27 23:52:26,271 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 85 flow [2023-01-27 23:52:26,273 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2023-01-27 23:52:26,275 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 0 predicate places. [2023-01-27 23:52:26,275 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 85 flow [2023-01-27 23:52:26,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,275 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:26,275 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:26,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-01-27 23:52:26,276 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:26,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:26,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1451273937, now seen corresponding path program 1 times [2023-01-27 23:52:26,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:26,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838776484] [2023-01-27 23:52:26,276 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:26,276 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:26,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:26,382 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:26,382 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:26,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1838776484] [2023-01-27 23:52:26,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1838776484] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:26,383 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:26,383 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-01-27 23:52:26,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684566465] [2023-01-27 23:52:26,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:26,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:52:26,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:26,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:52:26,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:52:26,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 282 [2023-01-27 23:52:26,390 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 85 flow. Second operand has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,390 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:26,390 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 282 [2023-01-27 23:52:26,390 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:26,498 INFO L130 PetriNetUnfolder]: 593/1022 cut-off events. [2023-01-27 23:52:26,498 INFO L131 PetriNetUnfolder]: For 106/106 co-relation queries the response was YES. [2023-01-27 23:52:26,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2144 conditions, 1022 events. 593/1022 cut-off events. For 106/106 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 4441 event pairs, 271 based on Foata normal form. 0/866 useless extension candidates. Maximal degree in co-relation 1916. Up to 877 conditions per place. [2023-01-27 23:52:26,503 INFO L137 encePairwiseOnDemand]: 279/282 looper letters, 45 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-01-27 23:52:26,503 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 50 transitions, 222 flow [2023-01-27 23:52:26,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:52:26,504 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:52:26,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 450 transitions. [2023-01-27 23:52:26,507 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5319148936170213 [2023-01-27 23:52:26,507 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 450 transitions. [2023-01-27 23:52:26,507 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 450 transitions. [2023-01-27 23:52:26,508 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:26,508 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 450 transitions. [2023-01-27 23:52:26,509 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 150.0) internal successors, (450), 3 states have internal predecessors, (450), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,511 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,511 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,511 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 85 flow. Second operand 3 states and 450 transitions. [2023-01-27 23:52:26,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 50 transitions, 222 flow [2023-01-27 23:52:26,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 50 transitions, 218 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:52:26,514 INFO L231 Difference]: Finished difference. Result has 36 places, 34 transitions, 97 flow [2023-01-27 23:52:26,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=82, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=97, PETRI_PLACES=36, PETRI_TRANSITIONS=34} [2023-01-27 23:52:26,514 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 2 predicate places. [2023-01-27 23:52:26,514 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 34 transitions, 97 flow [2023-01-27 23:52:26,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 137.0) internal successors, (411), 3 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:26,515 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:26,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-01-27 23:52:26,516 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:26,517 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:26,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1760034202, now seen corresponding path program 1 times [2023-01-27 23:52:26,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:26,517 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424074229] [2023-01-27 23:52:26,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:26,518 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:26,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:26,638 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424074229] [2023-01-27 23:52:26,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424074229] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1893017693] [2023-01-27 23:52:26,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:26,640 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:26,640 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:26,642 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:52:26,661 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-01-27 23:52:26,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:26,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 186 conjuncts, 4 conjunts are in the unsatisfiable core [2023-01-27 23:52:26,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:26,794 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:26,795 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:26,821 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:26,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1893017693] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:26,822 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:26,822 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 9 [2023-01-27 23:52:26,822 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118139295] [2023-01-27 23:52:26,822 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:26,822 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-01-27 23:52:26,823 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:26,823 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-01-27 23:52:26,823 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2023-01-27 23:52:26,825 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 282 [2023-01-27 23:52:26,826 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 36 places, 34 transitions, 97 flow. Second operand has 10 states, 10 states have (on average 128.4) internal successors, (1284), 10 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:26,826 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:26,826 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 282 [2023-01-27 23:52:26,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:27,260 INFO L130 PetriNetUnfolder]: 1619/2654 cut-off events. [2023-01-27 23:52:27,260 INFO L131 PetriNetUnfolder]: For 839/839 co-relation queries the response was YES. [2023-01-27 23:52:27,262 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6125 conditions, 2654 events. 1619/2654 cut-off events. For 839/839 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 12088 event pairs, 246 based on Foata normal form. 82/2392 useless extension candidates. Maximal degree in co-relation 5686. Up to 795 conditions per place. [2023-01-27 23:52:27,268 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 155 selfloop transitions, 26 changer transitions 3/184 dead transitions. [2023-01-27 23:52:27,268 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 184 transitions, 855 flow [2023-01-27 23:52:27,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-01-27 23:52:27,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2023-01-27 23:52:27,271 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 1687 transitions. [2023-01-27 23:52:27,271 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4985224586288416 [2023-01-27 23:52:27,271 INFO L72 ComplementDD]: Start complementDD. Operand 12 states and 1687 transitions. [2023-01-27 23:52:27,272 INFO L73 IsDeterministic]: Start isDeterministic. Operand 12 states and 1687 transitions. [2023-01-27 23:52:27,272 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:27,272 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 12 states and 1687 transitions. [2023-01-27 23:52:27,275 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 13 states, 12 states have (on average 140.58333333333334) internal successors, (1687), 12 states have internal predecessors, (1687), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,278 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 13 states, 13 states have (on average 282.0) internal successors, (3666), 13 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,280 INFO L81 ComplementDD]: Finished complementDD. Result has 13 states, 13 states have (on average 282.0) internal successors, (3666), 13 states have internal predecessors, (3666), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,280 INFO L175 Difference]: Start difference. First operand has 36 places, 34 transitions, 97 flow. Second operand 12 states and 1687 transitions. [2023-01-27 23:52:27,280 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 184 transitions, 855 flow [2023-01-27 23:52:27,283 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 184 transitions, 840 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:52:27,284 INFO L231 Difference]: Finished difference. Result has 54 places, 59 transitions, 309 flow [2023-01-27 23:52:27,284 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=94, PETRI_DIFFERENCE_MINUEND_PLACES=35, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=309, PETRI_PLACES=54, PETRI_TRANSITIONS=59} [2023-01-27 23:52:27,285 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 20 predicate places. [2023-01-27 23:52:27,285 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 59 transitions, 309 flow [2023-01-27 23:52:27,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 128.4) internal successors, (1284), 10 states have internal predecessors, (1284), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,286 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:27,286 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:27,299 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-01-27 23:52:27,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:27,491 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:27,492 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:27,492 INFO L85 PathProgramCache]: Analyzing trace with hash 1018121817, now seen corresponding path program 1 times [2023-01-27 23:52:27,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:27,492 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696159380] [2023-01-27 23:52:27,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:27,492 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:27,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:27,569 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:27,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:27,569 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696159380] [2023-01-27 23:52:27,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696159380] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:27,570 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:27,570 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:52:27,570 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1805047026] [2023-01-27 23:52:27,570 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:27,570 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:52:27,570 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:27,571 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:52:27,571 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:52:27,571 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 282 [2023-01-27 23:52:27,571 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 59 transitions, 309 flow. Second operand has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,571 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:27,572 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 282 [2023-01-27 23:52:27,572 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:27,655 INFO L130 PetriNetUnfolder]: 512/977 cut-off events. [2023-01-27 23:52:27,655 INFO L131 PetriNetUnfolder]: For 557/557 co-relation queries the response was YES. [2023-01-27 23:52:27,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2472 conditions, 977 events. 512/977 cut-off events. For 557/557 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 4170 event pairs, 98 based on Foata normal form. 0/889 useless extension candidates. Maximal degree in co-relation 2360. Up to 670 conditions per place. [2023-01-27 23:52:27,659 INFO L137 encePairwiseOnDemand]: 277/282 looper letters, 42 selfloop transitions, 6 changer transitions 0/57 dead transitions. [2023-01-27 23:52:27,659 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 57 transitions, 342 flow [2023-01-27 23:52:27,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:52:27,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:52:27,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 428 transitions. [2023-01-27 23:52:27,660 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5059101654846335 [2023-01-27 23:52:27,660 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 428 transitions. [2023-01-27 23:52:27,660 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 428 transitions. [2023-01-27 23:52:27,661 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:27,661 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 428 transitions. [2023-01-27 23:52:27,661 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.66666666666666) internal successors, (428), 3 states have internal predecessors, (428), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,663 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,663 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,663 INFO L175 Difference]: Start difference. First operand has 54 places, 59 transitions, 309 flow. Second operand 3 states and 428 transitions. [2023-01-27 23:52:27,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 57 transitions, 342 flow [2023-01-27 23:52:27,666 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 48 places, 57 transitions, 321 flow, removed 6 selfloop flow, removed 5 redundant places. [2023-01-27 23:52:27,667 INFO L231 Difference]: Finished difference. Result has 48 places, 48 transitions, 216 flow [2023-01-27 23:52:27,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=46, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=216, PETRI_PLACES=48, PETRI_TRANSITIONS=48} [2023-01-27 23:52:27,667 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 14 predicate places. [2023-01-27 23:52:27,667 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 48 transitions, 216 flow [2023-01-27 23:52:27,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 134.0) internal successors, (402), 3 states have internal predecessors, (402), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:27,668 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:27,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-01-27 23:52:27,668 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:27,668 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:27,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1945408692, now seen corresponding path program 1 times [2023-01-27 23:52:27,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:27,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1579011127] [2023-01-27 23:52:27,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:27,669 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:27,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:27,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:27,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:27,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1579011127] [2023-01-27 23:52:27,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1579011127] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:27,695 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:27,695 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-01-27 23:52:27,695 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [794033044] [2023-01-27 23:52:27,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:27,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-01-27 23:52:27,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:27,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-01-27 23:52:27,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-01-27 23:52:27,696 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 127 out of 282 [2023-01-27 23:52:27,697 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 48 transitions, 216 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 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) [2023-01-27 23:52:27,697 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:27,697 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 127 of 282 [2023-01-27 23:52:27,697 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:27,792 INFO L130 PetriNetUnfolder]: 624/1145 cut-off events. [2023-01-27 23:52:27,792 INFO L131 PetriNetUnfolder]: For 351/351 co-relation queries the response was YES. [2023-01-27 23:52:27,793 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2962 conditions, 1145 events. 624/1145 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 4699 event pairs, 391 based on Foata normal form. 24/1169 useless extension candidates. Maximal degree in co-relation 2382. Up to 849 conditions per place. [2023-01-27 23:52:27,796 INFO L137 encePairwiseOnDemand]: 276/282 looper letters, 56 selfloop transitions, 6 changer transitions 0/62 dead transitions. [2023-01-27 23:52:27,796 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 62 transitions, 383 flow [2023-01-27 23:52:27,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-01-27 23:52:27,796 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-01-27 23:52:27,797 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 432 transitions. [2023-01-27 23:52:27,797 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5106382978723404 [2023-01-27 23:52:27,797 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 432 transitions. [2023-01-27 23:52:27,797 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 432 transitions. [2023-01-27 23:52:27,797 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:27,798 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 432 transitions. [2023-01-27 23:52:27,798 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,799 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,799 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 282.0) internal successors, (1128), 4 states have internal predecessors, (1128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:27,799 INFO L175 Difference]: Start difference. First operand has 48 places, 48 transitions, 216 flow. Second operand 3 states and 432 transitions. [2023-01-27 23:52:27,799 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 62 transitions, 383 flow [2023-01-27 23:52:27,801 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 62 transitions, 375 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-01-27 23:52:27,802 INFO L231 Difference]: Finished difference. Result has 51 places, 48 transitions, 248 flow [2023-01-27 23:52:27,802 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=248, PETRI_PLACES=51, PETRI_TRANSITIONS=48} [2023-01-27 23:52:27,803 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 17 predicate places. [2023-01-27 23:52:27,803 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 48 transitions, 248 flow [2023-01-27 23:52:27,803 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 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) [2023-01-27 23:52:27,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:27,803 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:27,803 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-01-27 23:52:27,803 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:27,803 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:27,804 INFO L85 PathProgramCache]: Analyzing trace with hash 498757517, now seen corresponding path program 1 times [2023-01-27 23:52:27,804 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:27,804 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032522041] [2023-01-27 23:52:27,804 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:27,804 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:27,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:28,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:28,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:28,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032522041] [2023-01-27 23:52:28,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032522041] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:28,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:28,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:52:28,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1579865948] [2023-01-27 23:52:28,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:28,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:52:28,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:28,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:52:28,203 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:52:28,204 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 282 [2023-01-27 23:52:28,205 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 48 transitions, 248 flow. Second operand has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:28,205 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:28,205 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 282 [2023-01-27 23:52:28,205 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:28,764 INFO L130 PetriNetUnfolder]: 844/1612 cut-off events. [2023-01-27 23:52:28,764 INFO L131 PetriNetUnfolder]: For 1177/1177 co-relation queries the response was YES. [2023-01-27 23:52:28,766 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4119 conditions, 1612 events. 844/1612 cut-off events. For 1177/1177 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 7869 event pairs, 249 based on Foata normal form. 0/1590 useless extension candidates. Maximal degree in co-relation 2456. Up to 886 conditions per place. [2023-01-27 23:52:28,770 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 89 selfloop transitions, 11 changer transitions 13/122 dead transitions. [2023-01-27 23:52:28,770 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 122 transitions, 717 flow [2023-01-27 23:52:28,771 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:52:28,771 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:52:28,772 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1046 transitions. [2023-01-27 23:52:28,773 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41213553979511425 [2023-01-27 23:52:28,773 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1046 transitions. [2023-01-27 23:52:28,773 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1046 transitions. [2023-01-27 23:52:28,774 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:28,774 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1046 transitions. [2023-01-27 23:52:28,775 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:28,778 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:28,778 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:28,778 INFO L175 Difference]: Start difference. First operand has 51 places, 48 transitions, 248 flow. Second operand 9 states and 1046 transitions. [2023-01-27 23:52:28,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 122 transitions, 717 flow [2023-01-27 23:52:28,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 122 transitions, 677 flow, removed 9 selfloop flow, removed 2 redundant places. [2023-01-27 23:52:28,782 INFO L231 Difference]: Finished difference. Result has 63 places, 58 transitions, 310 flow [2023-01-27 23:52:28,783 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=226, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=310, PETRI_PLACES=63, PETRI_TRANSITIONS=58} [2023-01-27 23:52:28,783 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 29 predicate places. [2023-01-27 23:52:28,783 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 58 transitions, 310 flow [2023-01-27 23:52:28,784 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:28,784 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:28,784 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:28,784 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-01-27 23:52:28,784 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:28,784 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:28,784 INFO L85 PathProgramCache]: Analyzing trace with hash 858373001, now seen corresponding path program 2 times [2023-01-27 23:52:28,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:28,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1223211715] [2023-01-27 23:52:28,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:28,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:28,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:29,181 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:29,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:29,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1223211715] [2023-01-27 23:52:29,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1223211715] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:29,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:29,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-01-27 23:52:29,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179397590] [2023-01-27 23:52:29,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:29,182 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-01-27 23:52:29,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:29,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-01-27 23:52:29,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2023-01-27 23:52:29,183 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 282 [2023-01-27 23:52:29,184 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 58 transitions, 310 flow. Second operand has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,184 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:29,184 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 282 [2023-01-27 23:52:29,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:29,682 INFO L130 PetriNetUnfolder]: 1096/2088 cut-off events. [2023-01-27 23:52:29,682 INFO L131 PetriNetUnfolder]: For 1260/1260 co-relation queries the response was YES. [2023-01-27 23:52:29,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5608 conditions, 2088 events. 1096/2088 cut-off events. For 1260/1260 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 10771 event pairs, 301 based on Foata normal form. 0/2061 useless extension candidates. Maximal degree in co-relation 3995. Up to 839 conditions per place. [2023-01-27 23:52:29,689 INFO L137 encePairwiseOnDemand]: 273/282 looper letters, 89 selfloop transitions, 16 changer transitions 13/127 dead transitions. [2023-01-27 23:52:29,689 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 127 transitions, 784 flow [2023-01-27 23:52:29,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-01-27 23:52:29,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-01-27 23:52:29,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1046 transitions. [2023-01-27 23:52:29,691 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41213553979511425 [2023-01-27 23:52:29,691 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1046 transitions. [2023-01-27 23:52:29,691 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1046 transitions. [2023-01-27 23:52:29,692 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:29,692 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1046 transitions. [2023-01-27 23:52:29,693 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 116.22222222222223) internal successors, (1046), 9 states have internal predecessors, (1046), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,695 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,696 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 282.0) internal successors, (2820), 10 states have internal predecessors, (2820), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,696 INFO L175 Difference]: Start difference. First operand has 63 places, 58 transitions, 310 flow. Second operand 9 states and 1046 transitions. [2023-01-27 23:52:29,696 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 127 transitions, 784 flow [2023-01-27 23:52:29,699 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 127 transitions, 784 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-01-27 23:52:29,700 INFO L231 Difference]: Finished difference. Result has 75 places, 64 transitions, 406 flow [2023-01-27 23:52:29,701 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=310, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=406, PETRI_PLACES=75, PETRI_TRANSITIONS=64} [2023-01-27 23:52:29,701 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 41 predicate places. [2023-01-27 23:52:29,701 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 64 transitions, 406 flow [2023-01-27 23:52:29,702 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 106.81818181818181) internal successors, (1175), 11 states have internal predecessors, (1175), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,702 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:29,702 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:29,702 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-01-27 23:52:29,702 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:29,702 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:29,702 INFO L85 PathProgramCache]: Analyzing trace with hash 2064601814, now seen corresponding path program 1 times [2023-01-27 23:52:29,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:29,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1174763380] [2023-01-27 23:52:29,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:29,703 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:29,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:29,762 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:29,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1174763380] [2023-01-27 23:52:29,763 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1174763380] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:29,763 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [288174932] [2023-01-27 23:52:29,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:29,763 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:29,763 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:29,764 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:52:29,791 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-01-27 23:52:29,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:29,846 INFO L263 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 6 conjunts are in the unsatisfiable core [2023-01-27 23:52:29,848 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:29,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:52:29,882 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-01-27 23:52:29,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [288174932] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:29,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-01-27 23:52:29,884 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 7 [2023-01-27 23:52:29,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1906227745] [2023-01-27 23:52:29,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:29,885 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-01-27 23:52:29,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:29,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-01-27 23:52:29,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-01-27 23:52:29,887 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 123 out of 282 [2023-01-27 23:52:29,888 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 64 transitions, 406 flow. Second operand has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:29,888 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:29,888 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 123 of 282 [2023-01-27 23:52:29,888 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:30,114 INFO L130 PetriNetUnfolder]: 1190/2211 cut-off events. [2023-01-27 23:52:30,114 INFO L131 PetriNetUnfolder]: For 1999/1999 co-relation queries the response was YES. [2023-01-27 23:52:30,117 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6321 conditions, 2211 events. 1190/2211 cut-off events. For 1999/1999 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 10876 event pairs, 493 based on Foata normal form. 34/2225 useless extension candidates. Maximal degree in co-relation 4719. Up to 933 conditions per place. [2023-01-27 23:52:30,122 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 101 selfloop transitions, 16 changer transitions 0/117 dead transitions. [2023-01-27 23:52:30,122 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 117 transitions, 862 flow [2023-01-27 23:52:30,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-01-27 23:52:30,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-01-27 23:52:30,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 822 transitions. [2023-01-27 23:52:30,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4858156028368794 [2023-01-27 23:52:30,125 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 822 transitions. [2023-01-27 23:52:30,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 822 transitions. [2023-01-27 23:52:30,125 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:30,125 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 822 transitions. [2023-01-27 23:52:30,126 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 137.0) internal successors, (822), 6 states have internal predecessors, (822), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:30,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:30,129 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 282.0) internal successors, (1974), 7 states have internal predecessors, (1974), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:30,129 INFO L175 Difference]: Start difference. First operand has 75 places, 64 transitions, 406 flow. Second operand 6 states and 822 transitions. [2023-01-27 23:52:30,129 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 117 transitions, 862 flow [2023-01-27 23:52:30,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 117 transitions, 834 flow, removed 11 selfloop flow, removed 3 redundant places. [2023-01-27 23:52:30,137 INFO L231 Difference]: Finished difference. Result has 80 places, 71 transitions, 507 flow [2023-01-27 23:52:30,137 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=390, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=64, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=507, PETRI_PLACES=80, PETRI_TRANSITIONS=71} [2023-01-27 23:52:30,139 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 46 predicate places. [2023-01-27 23:52:30,139 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 71 transitions, 507 flow [2023-01-27 23:52:30,140 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 126.83333333333333) internal successors, (761), 6 states have internal predecessors, (761), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:30,140 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:30,140 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1] [2023-01-27 23:52:30,147 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-01-27 23:52:30,345 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 [2023-01-27 23:52:30,345 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:30,345 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:30,346 INFO L85 PathProgramCache]: Analyzing trace with hash 1688431302, now seen corresponding path program 2 times [2023-01-27 23:52:30,346 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:30,346 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482142693] [2023-01-27 23:52:30,346 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:30,346 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:30,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:30,544 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:30,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482142693] [2023-01-27 23:52:30,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482142693] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:30,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1896724414] [2023-01-27 23:52:30,544 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:52:30,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:30,545 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:30,546 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:52:30,548 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-01-27 23:52:30,642 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:52:30,642 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:52:30,643 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 8 conjunts are in the unsatisfiable core [2023-01-27 23:52:30,645 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:30,681 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:30,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:30,752 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 27 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:30,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1896724414] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:30,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:30,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 19 [2023-01-27 23:52:30,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [220896147] [2023-01-27 23:52:30,753 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:30,753 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-01-27 23:52:30,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:30,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-01-27 23:52:30,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=108, Invalid=272, Unknown=0, NotChecked=0, Total=380 [2023-01-27 23:52:30,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 120 out of 282 [2023-01-27 23:52:30,757 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 71 transitions, 507 flow. Second operand has 20 states, 20 states have (on average 123.3) internal successors, (2466), 20 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:30,757 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:30,757 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 120 of 282 [2023-01-27 23:52:30,757 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:31,201 INFO L130 PetriNetUnfolder]: 1638/3035 cut-off events. [2023-01-27 23:52:31,201 INFO L131 PetriNetUnfolder]: For 3963/3963 co-relation queries the response was YES. [2023-01-27 23:52:31,206 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9050 conditions, 3035 events. 1638/3035 cut-off events. For 3963/3963 co-relation queries the response was YES. Maximal size of possible extension queue 64. Compared 14014 event pairs, 352 based on Foata normal form. 32/3047 useless extension candidates. Maximal degree in co-relation 7670. Up to 936 conditions per place. [2023-01-27 23:52:31,214 INFO L137 encePairwiseOnDemand]: 274/282 looper letters, 214 selfloop transitions, 45 changer transitions 6/265 dead transitions. [2023-01-27 23:52:31,214 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 265 transitions, 1820 flow [2023-01-27 23:52:31,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-01-27 23:52:31,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2023-01-27 23:52:31,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 2760 transitions. [2023-01-27 23:52:31,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46605876393110435 [2023-01-27 23:52:31,219 INFO L72 ComplementDD]: Start complementDD. Operand 21 states and 2760 transitions. [2023-01-27 23:52:31,220 INFO L73 IsDeterministic]: Start isDeterministic. Operand 21 states and 2760 transitions. [2023-01-27 23:52:31,221 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:31,221 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 21 states and 2760 transitions. [2023-01-27 23:52:31,224 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 22 states, 21 states have (on average 131.42857142857142) internal successors, (2760), 21 states have internal predecessors, (2760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:31,229 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 22 states, 22 states have (on average 282.0) internal successors, (6204), 22 states have internal predecessors, (6204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:31,230 INFO L81 ComplementDD]: Finished complementDD. Result has 22 states, 22 states have (on average 282.0) internal successors, (6204), 22 states have internal predecessors, (6204), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:31,230 INFO L175 Difference]: Start difference. First operand has 80 places, 71 transitions, 507 flow. Second operand 21 states and 2760 transitions. [2023-01-27 23:52:31,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 265 transitions, 1820 flow [2023-01-27 23:52:31,239 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 100 places, 265 transitions, 1816 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-01-27 23:52:31,241 INFO L231 Difference]: Finished difference. Result has 111 places, 98 transitions, 888 flow [2023-01-27 23:52:31,241 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=503, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=888, PETRI_PLACES=111, PETRI_TRANSITIONS=98} [2023-01-27 23:52:31,241 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 77 predicate places. [2023-01-27 23:52:31,241 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 98 transitions, 888 flow [2023-01-27 23:52:31,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 123.3) internal successors, (2466), 20 states have internal predecessors, (2466), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:31,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:31,243 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:31,249 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-01-27 23:52:31,447 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 [2023-01-27 23:52:31,447 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:31,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:31,448 INFO L85 PathProgramCache]: Analyzing trace with hash 878136134, now seen corresponding path program 3 times [2023-01-27 23:52:31,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:31,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [805541989] [2023-01-27 23:52:31,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:31,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:31,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:31,902 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:52:31,902 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:31,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [805541989] [2023-01-27 23:52:31,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [805541989] provided 1 perfect and 0 imperfect interpolant sequences [2023-01-27 23:52:31,903 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-01-27 23:52:31,903 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2023-01-27 23:52:31,903 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011670127] [2023-01-27 23:52:31,903 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-01-27 23:52:31,903 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-01-27 23:52:31,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:31,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-01-27 23:52:31,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=176, Unknown=0, NotChecked=0, Total=210 [2023-01-27 23:52:31,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:52:31,905 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 98 transitions, 888 flow. Second operand has 15 states, 15 states have (on average 90.86666666666666) internal successors, (1363), 15 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:31,905 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:31,905 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:52:31,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:33,266 INFO L130 PetriNetUnfolder]: 2736/5048 cut-off events. [2023-01-27 23:52:33,266 INFO L131 PetriNetUnfolder]: For 10240/10240 co-relation queries the response was YES. [2023-01-27 23:52:33,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17212 conditions, 5048 events. 2736/5048 cut-off events. For 10240/10240 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 26377 event pairs, 757 based on Foata normal form. 0/5023 useless extension candidates. Maximal degree in co-relation 15582. Up to 1610 conditions per place. [2023-01-27 23:52:33,289 INFO L137 encePairwiseOnDemand]: 264/282 looper letters, 162 selfloop transitions, 131 changer transitions 4/297 dead transitions. [2023-01-27 23:52:33,289 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 297 transitions, 2729 flow [2023-01-27 23:52:33,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 23:52:33,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 23:52:33,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 2566 transitions. [2023-01-27 23:52:33,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33701076963488313 [2023-01-27 23:52:33,294 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 2566 transitions. [2023-01-27 23:52:33,294 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 2566 transitions. [2023-01-27 23:52:33,295 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:33,295 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 2566 transitions. [2023-01-27 23:52:33,298 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 95.03703703703704) internal successors, (2566), 27 states have internal predecessors, (2566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:33,304 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:33,305 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:33,306 INFO L175 Difference]: Start difference. First operand has 111 places, 98 transitions, 888 flow. Second operand 27 states and 2566 transitions. [2023-01-27 23:52:33,306 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 297 transitions, 2729 flow [2023-01-27 23:52:33,335 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 297 transitions, 2503 flow, removed 78 selfloop flow, removed 8 redundant places. [2023-01-27 23:52:33,337 INFO L231 Difference]: Finished difference. Result has 135 places, 191 transitions, 1927 flow [2023-01-27 23:52:33,338 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=801, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=98, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=1927, PETRI_PLACES=135, PETRI_TRANSITIONS=191} [2023-01-27 23:52:33,338 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 101 predicate places. [2023-01-27 23:52:33,338 INFO L495 AbstractCegarLoop]: Abstraction has has 135 places, 191 transitions, 1927 flow [2023-01-27 23:52:33,338 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 90.86666666666666) internal successors, (1363), 15 states have internal predecessors, (1363), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:33,338 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:33,339 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:33,339 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-01-27 23:52:33,339 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:33,339 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:33,339 INFO L85 PathProgramCache]: Analyzing trace with hash -7541718, now seen corresponding path program 4 times [2023-01-27 23:52:33,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:33,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80093137] [2023-01-27 23:52:33,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:33,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:33,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:33,824 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:52:33,824 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80093137] [2023-01-27 23:52:33,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80093137] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:33,824 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1979959772] [2023-01-27 23:52:33,824 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:52:33,824 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:33,825 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:33,825 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:52:33,841 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-01-27 23:52:33,923 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:52:33,923 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:52:33,925 INFO L263 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 68 conjunts are in the unsatisfiable core [2023-01-27 23:52:33,927 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:33,967 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-27 23:52:33,968 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-27 23:52:34,326 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 23:52:34,396 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-01-27 23:52:34,810 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 43 [2023-01-27 23:52:34,894 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:34,894 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:35,137 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_360 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_360) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-27 23:52:35,146 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:52:35,146 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:52:35,152 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:52:35,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:52:35,157 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-27 23:52:35,321 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-01-27 23:52:35,322 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1979959772] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:35,322 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:35,322 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 16, 14] total 44 [2023-01-27 23:52:35,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507565188] [2023-01-27 23:52:35,322 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:35,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 46 states [2023-01-27 23:52:35,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:35,324 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 46 interpolants. [2023-01-27 23:52:35,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=163, Invalid=1820, Unknown=1, NotChecked=86, Total=2070 [2023-01-27 23:52:35,326 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:52:35,338 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 135 places, 191 transitions, 1927 flow. Second operand has 46 states, 46 states have (on average 86.82608695652173) internal successors, (3994), 46 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:35,338 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:35,338 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:52:35,338 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:52:41,842 INFO L130 PetriNetUnfolder]: 3584/6680 cut-off events. [2023-01-27 23:52:41,842 INFO L131 PetriNetUnfolder]: For 17054/17054 co-relation queries the response was YES. [2023-01-27 23:52:41,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24776 conditions, 6680 events. 3584/6680 cut-off events. For 17054/17054 co-relation queries the response was YES. Maximal size of possible extension queue 163. Compared 38065 event pairs, 544 based on Foata normal form. 54/6697 useless extension candidates. Maximal degree in co-relation 20420. Up to 1562 conditions per place. [2023-01-27 23:52:41,882 INFO L137 encePairwiseOnDemand]: 259/282 looper letters, 274 selfloop transitions, 299 changer transitions 15/588 dead transitions. [2023-01-27 23:52:41,882 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 588 transitions, 5201 flow [2023-01-27 23:52:41,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 68 states. [2023-01-27 23:52:41,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2023-01-27 23:52:41,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 6173 transitions. [2023-01-27 23:52:41,890 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.321912807676262 [2023-01-27 23:52:41,890 INFO L72 ComplementDD]: Start complementDD. Operand 68 states and 6173 transitions. [2023-01-27 23:52:41,890 INFO L73 IsDeterministic]: Start isDeterministic. Operand 68 states and 6173 transitions. [2023-01-27 23:52:41,894 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:52:41,894 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 68 states and 6173 transitions. [2023-01-27 23:52:41,901 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 69 states, 68 states have (on average 90.77941176470588) internal successors, (6173), 68 states have internal predecessors, (6173), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:41,917 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 69 states, 69 states have (on average 282.0) internal successors, (19458), 69 states have internal predecessors, (19458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:41,919 INFO L81 ComplementDD]: Finished complementDD. Result has 69 states, 69 states have (on average 282.0) internal successors, (19458), 69 states have internal predecessors, (19458), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:41,919 INFO L175 Difference]: Start difference. First operand has 135 places, 191 transitions, 1927 flow. Second operand 68 states and 6173 transitions. [2023-01-27 23:52:41,919 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 588 transitions, 5201 flow [2023-01-27 23:52:41,988 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 588 transitions, 4980 flow, removed 60 selfloop flow, removed 6 redundant places. [2023-01-27 23:52:41,994 INFO L231 Difference]: Finished difference. Result has 214 places, 345 transitions, 3990 flow [2023-01-27 23:52:41,994 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=1782, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=189, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=149, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=68, PETRI_FLOW=3990, PETRI_PLACES=214, PETRI_TRANSITIONS=345} [2023-01-27 23:52:41,994 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 180 predicate places. [2023-01-27 23:52:41,995 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 345 transitions, 3990 flow [2023-01-27 23:52:41,995 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 46 states, 46 states have (on average 86.82608695652173) internal successors, (3994), 46 states have internal predecessors, (3994), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:41,995 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:52:41,996 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:52:42,002 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-01-27 23:52:42,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:42,200 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:52:42,200 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:52:42,200 INFO L85 PathProgramCache]: Analyzing trace with hash 366211873, now seen corresponding path program 1 times [2023-01-27 23:52:42,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:52:42,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1449007544] [2023-01-27 23:52:42,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:42,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:52:42,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:43,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:52:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1449007544] [2023-01-27 23:52:43,587 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1449007544] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:52:43,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [611756865] [2023-01-27 23:52:43,587 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:52:43,587 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:52:43,587 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:52:43,588 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-01-27 23:52:43,590 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-01-27 23:52:43,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:52:43,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 81 conjunts are in the unsatisfiable core [2023-01-27 23:52:43,684 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:52:43,883 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-01-27 23:52:44,174 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-01-27 23:52:51,114 INFO L321 Elim1Store]: treesize reduction 7, result has 30.0 percent of original size [2023-01-27 23:52:51,114 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 111 treesize of output 46 [2023-01-27 23:52:51,215 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:51,215 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:52:52,400 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 48 [2023-01-27 23:52:52,695 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:52:52,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [611756865] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:52:52,696 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:52:52,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 21, 20] total 64 [2023-01-27 23:52:52,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858311412] [2023-01-27 23:52:52,696 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:52:52,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 66 states [2023-01-27 23:52:52,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:52:52,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 66 interpolants. [2023-01-27 23:52:52,698 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=363, Invalid=3924, Unknown=3, NotChecked=0, Total=4290 [2023-01-27 23:52:52,701 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:52:52,703 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 345 transitions, 3990 flow. Second operand has 66 states, 66 states have (on average 90.63636363636364) internal successors, (5982), 66 states have internal predecessors, (5982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:52:52,704 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:52:52,704 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:52:52,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:53:10,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-27 23:53:19,175 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-27 23:53:21,188 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-27 23:53:28,445 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:53:30,454 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:53:45,496 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-27 23:54:01,794 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:03,803 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:05,812 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:08,714 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:11,463 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2023-01-27 23:54:19,883 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.92s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:36,428 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-27 23:54:40,824 INFO L130 PetriNetUnfolder]: 6618/12412 cut-off events. [2023-01-27 23:54:40,824 INFO L131 PetriNetUnfolder]: For 132000/132000 co-relation queries the response was YES. [2023-01-27 23:54:41,073 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76861 conditions, 12412 events. 6618/12412 cut-off events. For 132000/132000 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 80465 event pairs, 1368 based on Foata normal form. 68/12421 useless extension candidates. Maximal degree in co-relation 65145. Up to 4620 conditions per place. [2023-01-27 23:54:41,117 INFO L137 encePairwiseOnDemand]: 261/282 looper letters, 714 selfloop transitions, 450 changer transitions 214/1378 dead transitions. [2023-01-27 23:54:41,117 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 376 places, 1378 transitions, 16893 flow [2023-01-27 23:54:41,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 163 states. [2023-01-27 23:54:41,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 163 states. [2023-01-27 23:54:41,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 163 states to 163 states and 15398 transitions. [2023-01-27 23:54:41,140 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.33498672932167256 [2023-01-27 23:54:41,140 INFO L72 ComplementDD]: Start complementDD. Operand 163 states and 15398 transitions. [2023-01-27 23:54:41,140 INFO L73 IsDeterministic]: Start isDeterministic. Operand 163 states and 15398 transitions. [2023-01-27 23:54:41,145 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:54:41,145 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 163 states and 15398 transitions. [2023-01-27 23:54:41,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 164 states, 163 states have (on average 94.46625766871166) internal successors, (15398), 163 states have internal predecessors, (15398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:41,204 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 164 states, 164 states have (on average 282.0) internal successors, (46248), 164 states have internal predecessors, (46248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:41,216 INFO L81 ComplementDD]: Finished complementDD. Result has 164 states, 164 states have (on average 282.0) internal successors, (46248), 164 states have internal predecessors, (46248), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:41,216 INFO L175 Difference]: Start difference. First operand has 214 places, 345 transitions, 3990 flow. Second operand 163 states and 15398 transitions. [2023-01-27 23:54:41,216 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 376 places, 1378 transitions, 16893 flow [2023-01-27 23:54:41,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 364 places, 1378 transitions, 15907 flow, removed 369 selfloop flow, removed 12 redundant places. [2023-01-27 23:54:41,505 INFO L231 Difference]: Finished difference. Result has 391 places, 704 transitions, 8427 flow [2023-01-27 23:54:41,505 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=3487, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=151, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=167, PETRI_DIFFERENCE_SUBTRAHEND_STATES=163, PETRI_FLOW=8427, PETRI_PLACES=391, PETRI_TRANSITIONS=704} [2023-01-27 23:54:41,506 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 357 predicate places. [2023-01-27 23:54:41,506 INFO L495 AbstractCegarLoop]: Abstraction has has 391 places, 704 transitions, 8427 flow [2023-01-27 23:54:41,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 66 states, 66 states have (on average 90.63636363636364) internal successors, (5982), 66 states have internal predecessors, (5982), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:41,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:54:41,508 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:54:41,513 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2023-01-27 23:54:41,712 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,SelfDestructingSolverStorable11 [2023-01-27 23:54:41,713 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:54:41,714 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:54:41,714 INFO L85 PathProgramCache]: Analyzing trace with hash -765198685, now seen corresponding path program 2 times [2023-01-27 23:54:41,714 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:54:41,714 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1141229850] [2023-01-27 23:54:41,714 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:54:41,714 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:54:41,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:54:42,535 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:42,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:54:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1141229850] [2023-01-27 23:54:42,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1141229850] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:54:42,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1027685180] [2023-01-27 23:54:42,535 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:54:42,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:54:42,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:54:42,540 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) [2023-01-27 23:54:42,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-01-27 23:54:42,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:54:42,766 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:54:42,768 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 95 conjunts are in the unsatisfiable core [2023-01-27 23:54:42,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:54:42,787 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-01-27 23:54:42,787 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-01-27 23:54:42,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-01-27 23:54:43,061 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 21 [2023-01-27 23:54:43,358 INFO L321 Elim1Store]: treesize reduction 21, result has 41.7 percent of original size [2023-01-27 23:54:43,358 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 34 treesize of output 37 [2023-01-27 23:54:43,847 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 56 treesize of output 32 [2023-01-27 23:54:43,905 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:43,906 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:54:44,645 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:54:44,646 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 30 [2023-01-27 23:54:44,652 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:54:44,652 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-01-27 23:54:44,655 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-27 23:54:44,837 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:54:44,837 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1027685180] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:54:44,837 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:54:44,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 20, 19] total 57 [2023-01-27 23:54:44,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894924760] [2023-01-27 23:54:44,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:54:44,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 59 states [2023-01-27 23:54:44,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:54:44,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 59 interpolants. [2023-01-27 23:54:44,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=207, Invalid=3211, Unknown=4, NotChecked=0, Total=3422 [2023-01-27 23:54:44,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:54:44,843 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 704 transitions, 8427 flow. Second operand has 59 states, 59 states have (on average 86.76271186440678) internal successors, (5119), 59 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:54:44,844 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:54:44,844 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:54:44,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:55:29,402 INFO L130 PetriNetUnfolder]: 11298/21369 cut-off events. [2023-01-27 23:55:29,402 INFO L131 PetriNetUnfolder]: For 237460/237460 co-relation queries the response was YES. [2023-01-27 23:55:29,544 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135515 conditions, 21369 events. 11298/21369 cut-off events. For 237460/237460 co-relation queries the response was YES. Maximal size of possible extension queue 314. Compared 151058 event pairs, 1329 based on Foata normal form. 268/21546 useless extension candidates. Maximal degree in co-relation 132762. Up to 7546 conditions per place. [2023-01-27 23:55:29,612 INFO L137 encePairwiseOnDemand]: 258/282 looper letters, 621 selfloop transitions, 1284 changer transitions 114/2019 dead transitions. [2023-01-27 23:55:29,612 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 543 places, 2019 transitions, 26716 flow [2023-01-27 23:55:29,612 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 179 states. [2023-01-27 23:55:29,612 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2023-01-27 23:55:29,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 16110 transitions. [2023-01-27 23:55:29,626 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3191489361702128 [2023-01-27 23:55:29,626 INFO L72 ComplementDD]: Start complementDD. Operand 179 states and 16110 transitions. [2023-01-27 23:55:29,626 INFO L73 IsDeterministic]: Start isDeterministic. Operand 179 states and 16110 transitions. [2023-01-27 23:55:29,630 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:55:29,630 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 179 states and 16110 transitions. [2023-01-27 23:55:29,644 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 180 states, 179 states have (on average 90.0) internal successors, (16110), 179 states have internal predecessors, (16110), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:55:29,675 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 180 states, 180 states have (on average 282.0) internal successors, (50760), 180 states have internal predecessors, (50760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:55:29,683 INFO L81 ComplementDD]: Finished complementDD. Result has 180 states, 180 states have (on average 282.0) internal successors, (50760), 180 states have internal predecessors, (50760), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:55:29,683 INFO L175 Difference]: Start difference. First operand has 391 places, 704 transitions, 8427 flow. Second operand 179 states and 16110 transitions. [2023-01-27 23:55:29,683 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 543 places, 2019 transitions, 26716 flow [2023-01-27 23:55:30,461 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 526 places, 2019 transitions, 25801 flow, removed 358 selfloop flow, removed 17 redundant places. [2023-01-27 23:55:30,479 INFO L231 Difference]: Finished difference. Result has 550 places, 1393 transitions, 19343 flow [2023-01-27 23:55:30,479 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=7050, PETRI_DIFFERENCE_MINUEND_PLACES=348, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=635, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=551, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=179, PETRI_FLOW=19343, PETRI_PLACES=550, PETRI_TRANSITIONS=1393} [2023-01-27 23:55:30,480 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 516 predicate places. [2023-01-27 23:55:30,480 INFO L495 AbstractCegarLoop]: Abstraction has has 550 places, 1393 transitions, 19343 flow [2023-01-27 23:55:30,481 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 59 states, 59 states have (on average 86.76271186440678) internal successors, (5119), 59 states have internal predecessors, (5119), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:55:30,481 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:55:30,481 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:55:30,487 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-01-27 23:55:30,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:55:30,685 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:55:30,686 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:55:30,686 INFO L85 PathProgramCache]: Analyzing trace with hash -863737801, now seen corresponding path program 3 times [2023-01-27 23:55:30,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:55:30,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1201370057] [2023-01-27 23:55:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:55:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:55:30,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:55:32,021 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:55:32,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:55:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1201370057] [2023-01-27 23:55:32,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1201370057] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:55:32,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [253039007] [2023-01-27 23:55:32,022 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-01-27 23:55:32,022 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:55:32,022 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:55:32,023 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) [2023-01-27 23:55:32,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-01-27 23:55:32,133 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-01-27 23:55:32,133 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:55:32,135 INFO L263 TraceCheckSpWp]: Trace formula consists of 301 conjuncts, 90 conjunts are in the unsatisfiable core [2023-01-27 23:55:32,137 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:55:32,153 INFO L321 Elim1Store]: treesize reduction 16, result has 36.0 percent of original size [2023-01-27 23:55:32,153 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 20 treesize of output 22 [2023-01-27 23:55:32,361 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-27 23:55:32,708 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:55:32,709 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 49 treesize of output 36 [2023-01-27 23:55:32,785 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-01-27 23:55:33,393 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 75 treesize of output 43 [2023-01-27 23:55:33,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:55:33,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:55:33,972 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (not (= 4294967294 (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_570) |c_~#arr~0.base|) (+ (* |c_t1Thread1of1ForFork1_inc_top_#t~post31#1| 4) |c_~#arr~0.offset| (- 4))) 4294967296)))) is different from false [2023-01-27 23:55:33,976 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_ArrVal_570 (Array Int Int))) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_570) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (- 4) (* c_~top~0 4))) 4294967296) 4294967294))) is different from false [2023-01-27 23:55:36,081 INFO L321 Elim1Store]: treesize reduction 27, result has 61.4 percent of original size [2023-01-27 23:55:36,082 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 2 case distinctions, treesize of input 53 treesize of output 60 [2023-01-27 23:55:36,089 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-27 23:55:36,089 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 67 treesize of output 70 [2023-01-27 23:55:36,094 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 22 [2023-01-27 23:55:40,383 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 1 proven. 13 refuted. 0 times theorem prover too weak. 0 trivial. 1 not checked. [2023-01-27 23:55:40,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [253039007] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:55:40,384 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:55:40,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 22, 22] total 62 [2023-01-27 23:55:40,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055014075] [2023-01-27 23:55:40,385 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:55:40,386 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2023-01-27 23:55:40,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:55:40,386 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2023-01-27 23:55:40,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=372, Invalid=3389, Unknown=29, NotChecked=242, Total=4032 [2023-01-27 23:55:40,390 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-27 23:55:40,392 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 550 places, 1393 transitions, 19343 flow. Second operand has 64 states, 64 states have (on average 86.671875) internal successors, (5547), 64 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:55:40,392 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:55:40,392 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-27 23:55:40,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:58:49,392 INFO L130 PetriNetUnfolder]: 20401/38902 cut-off events. [2023-01-27 23:58:49,392 INFO L131 PetriNetUnfolder]: For 538404/538404 co-relation queries the response was YES. [2023-01-27 23:58:49,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280793 conditions, 38902 events. 20401/38902 cut-off events. For 538404/538404 co-relation queries the response was YES. Maximal size of possible extension queue 566. Compared 310366 event pairs, 2061 based on Foata normal form. 220/38982 useless extension candidates. Maximal degree in co-relation 279355. Up to 13914 conditions per place. [2023-01-27 23:58:50,069 INFO L137 encePairwiseOnDemand]: 260/282 looper letters, 698 selfloop transitions, 2531 changer transitions 144/3373 dead transitions. [2023-01-27 23:58:50,069 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 744 places, 3373 transitions, 53340 flow [2023-01-27 23:58:50,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 195 states. [2023-01-27 23:58:50,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2023-01-27 23:58:50,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 17580 transitions. [2023-01-27 23:58:50,124 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31969448990725585 [2023-01-27 23:58:50,124 INFO L72 ComplementDD]: Start complementDD. Operand 195 states and 17580 transitions. [2023-01-27 23:58:50,124 INFO L73 IsDeterministic]: Start isDeterministic. Operand 195 states and 17580 transitions. [2023-01-27 23:58:50,129 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:58:50,129 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 195 states and 17580 transitions. [2023-01-27 23:58:50,162 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 196 states, 195 states have (on average 90.15384615384616) internal successors, (17580), 195 states have internal predecessors, (17580), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:58:50,237 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 196 states, 196 states have (on average 282.0) internal successors, (55272), 196 states have internal predecessors, (55272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:58:50,246 INFO L81 ComplementDD]: Finished complementDD. Result has 196 states, 196 states have (on average 282.0) internal successors, (55272), 196 states have internal predecessors, (55272), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:58:50,246 INFO L175 Difference]: Start difference. First operand has 550 places, 1393 transitions, 19343 flow. Second operand 195 states and 17580 transitions. [2023-01-27 23:58:50,246 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 744 places, 3373 transitions, 53340 flow [2023-01-27 23:58:52,815 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 732 places, 3373 transitions, 51359 flow, removed 922 selfloop flow, removed 12 redundant places. [2023-01-27 23:58:52,851 INFO L231 Difference]: Finished difference. Result has 769 places, 2669 transitions, 44037 flow [2023-01-27 23:58:52,852 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=18124, PETRI_DIFFERENCE_MINUEND_PLACES=538, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1393, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1272, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=95, PETRI_DIFFERENCE_SUBTRAHEND_STATES=195, PETRI_FLOW=44037, PETRI_PLACES=769, PETRI_TRANSITIONS=2669} [2023-01-27 23:58:52,852 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 735 predicate places. [2023-01-27 23:58:52,852 INFO L495 AbstractCegarLoop]: Abstraction has has 769 places, 2669 transitions, 44037 flow [2023-01-27 23:58:52,853 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 64 states have (on average 86.671875) internal successors, (5547), 64 states have internal predecessors, (5547), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:58:52,853 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:58:52,853 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:58:52,858 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-01-27 23:58:53,058 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:58:53,058 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting t1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:58:53,059 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:58:53,059 INFO L85 PathProgramCache]: Analyzing trace with hash -395420042, now seen corresponding path program 2 times [2023-01-27 23:58:53,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:58:53,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042975048] [2023-01-27 23:58:53,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:58:53,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:58:53,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:58:53,404 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:58:53,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:58:53,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042975048] [2023-01-27 23:58:53,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042975048] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:58:53,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23795260] [2023-01-27 23:58:53,405 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-01-27 23:58:53,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:58:53,405 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:58:53,421 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) [2023-01-27 23:58:53,473 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-01-27 23:58:53,596 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-01-27 23:58:53,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:58:53,598 INFO L263 TraceCheckSpWp]: Trace formula consists of 352 conjuncts, 10 conjunts are in the unsatisfiable core [2023-01-27 23:58:53,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:58:53,785 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:58:53,785 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:58:54,179 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 3 proven. 25 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-01-27 23:58:54,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23795260] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:58:54,180 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:58:54,180 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 21 [2023-01-27 23:58:54,180 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20730102] [2023-01-27 23:58:54,180 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:58:54,180 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2023-01-27 23:58:54,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:58:54,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2023-01-27 23:58:54,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2023-01-27 23:58:54,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 118 out of 282 [2023-01-27 23:58:54,183 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 769 places, 2669 transitions, 44037 flow. Second operand has 22 states, 22 states have (on average 122.04545454545455) internal successors, (2685), 22 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:58:54,183 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:58:54,183 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 118 of 282 [2023-01-27 23:58:54,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-27 23:59:17,232 INFO L130 PetriNetUnfolder]: 21468/41078 cut-off events. [2023-01-27 23:59:17,232 INFO L131 PetriNetUnfolder]: For 2881350/2881350 co-relation queries the response was YES. [2023-01-27 23:59:17,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 480917 conditions, 41078 events. 21468/41078 cut-off events. For 2881350/2881350 co-relation queries the response was YES. Maximal size of possible extension queue 614. Compared 332192 event pairs, 5259 based on Foata normal form. 156/41182 useless extension candidates. Maximal degree in co-relation 479093. Up to 14326 conditions per place. [2023-01-27 23:59:18,096 INFO L137 encePairwiseOnDemand]: 272/282 looper letters, 1707 selfloop transitions, 1673 changer transitions 12/3392 dead transitions. [2023-01-27 23:59:18,096 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 791 places, 3392 transitions, 62926 flow [2023-01-27 23:59:18,097 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2023-01-27 23:59:18,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2023-01-27 23:59:18,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 3429 transitions. [2023-01-27 23:59:18,100 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.450354609929078 [2023-01-27 23:59:18,100 INFO L72 ComplementDD]: Start complementDD. Operand 27 states and 3429 transitions. [2023-01-27 23:59:18,100 INFO L73 IsDeterministic]: Start isDeterministic. Operand 27 states and 3429 transitions. [2023-01-27 23:59:18,101 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-27 23:59:18,101 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 27 states and 3429 transitions. [2023-01-27 23:59:18,104 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 28 states, 27 states have (on average 127.0) internal successors, (3429), 27 states have internal predecessors, (3429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:59:18,108 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:59:18,109 INFO L81 ComplementDD]: Finished complementDD. Result has 28 states, 28 states have (on average 282.0) internal successors, (7896), 28 states have internal predecessors, (7896), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:59:18,109 INFO L175 Difference]: Start difference. First operand has 769 places, 2669 transitions, 44037 flow. Second operand 27 states and 3429 transitions. [2023-01-27 23:59:18,109 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 791 places, 3392 transitions, 62926 flow [2023-01-27 23:59:28,377 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 756 places, 3392 transitions, 59291 flow, removed 1037 selfloop flow, removed 35 redundant places. [2023-01-27 23:59:28,422 INFO L231 Difference]: Finished difference. Result has 762 places, 2811 transitions, 49028 flow [2023-01-27 23:59:28,424 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=40147, PETRI_DIFFERENCE_MINUEND_PLACES=730, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1080, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=49028, PETRI_PLACES=762, PETRI_TRANSITIONS=2811} [2023-01-27 23:59:28,424 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 728 predicate places. [2023-01-27 23:59:28,424 INFO L495 AbstractCegarLoop]: Abstraction has has 762 places, 2811 transitions, 49028 flow [2023-01-27 23:59:28,425 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 122.04545454545455) internal successors, (2685), 22 states have internal predecessors, (2685), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:59:28,425 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-27 23:59:28,425 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-27 23:59:28,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-01-27 23:59:28,629 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,SelfDestructingSolverStorable14 [2023-01-27 23:59:28,629 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-27 23:59:28,630 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-27 23:59:28,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1841042545, now seen corresponding path program 4 times [2023-01-27 23:59:28,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-27 23:59:28,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209157133] [2023-01-27 23:59:28,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-27 23:59:28,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-27 23:59:28,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-27 23:59:30,784 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:59:30,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-27 23:59:30,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209157133] [2023-01-27 23:59:30,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209157133] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-27 23:59:30,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [869902788] [2023-01-27 23:59:30,784 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-01-27 23:59:30,784 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-27 23:59:30,784 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-27 23:59:30,786 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) [2023-01-27 23:59:30,787 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-01-27 23:59:30,902 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-01-27 23:59:30,903 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-27 23:59:30,904 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 101 conjunts are in the unsatisfiable core [2023-01-27 23:59:30,907 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-27 23:59:31,210 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 15 [2023-01-27 23:59:31,748 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:59:31,748 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-01-27 23:59:32,316 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-01-27 23:59:32,317 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 69 treesize of output 41 [2023-01-27 23:59:33,575 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 107 treesize of output 43 [2023-01-27 23:59:33,772 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:59:33,772 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-27 23:59:41,872 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 46 [2023-01-27 23:59:42,284 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 2 proven. 43 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-27 23:59:42,284 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [869902788] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-27 23:59:42,284 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-27 23:59:42,284 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 26, 25] total 84 [2023-01-27 23:59:42,284 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206173506] [2023-01-27 23:59:42,284 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-27 23:59:42,285 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-01-27 23:59:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-27 23:59:42,285 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-01-27 23:59:42,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=325, Invalid=6814, Unknown=1, NotChecked=0, Total=7140 [2023-01-27 23:59:42,290 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 89 out of 282 [2023-01-27 23:59:42,295 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 762 places, 2811 transitions, 49028 flow. Second operand has 85 states, 85 states have (on average 90.8) internal successors, (7718), 85 states have internal predecessors, (7718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-01-27 23:59:42,296 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-27 23:59:42,296 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 89 of 282 [2023-01-27 23:59:42,296 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:03:58,193 INFO L130 PetriNetUnfolder]: 44484/84672 cut-off events. [2023-01-28 00:03:58,194 INFO L131 PetriNetUnfolder]: For 6151887/6151887 co-relation queries the response was YES. [2023-01-28 00:03:59,974 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1003511 conditions, 84672 events. 44484/84672 cut-off events. For 6151887/6151887 co-relation queries the response was YES. Maximal size of possible extension queue 1117. Compared 753476 event pairs, 4743 based on Foata normal form. 24/84561 useless extension candidates. Maximal degree in co-relation 984834. Up to 28337 conditions per place. [2023-01-28 00:04:00,583 INFO L137 encePairwiseOnDemand]: 263/282 looper letters, 2089 selfloop transitions, 5448 changer transitions 254/7791 dead transitions. [2023-01-28 00:04:00,584 INFO L142 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 1188 places, 7791 transitions, 163020 flow [2023-01-28 00:04:00,584 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 427 states. [2023-01-28 00:04:00,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 427 states. [2023-01-28 00:04:00,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 427 states to 427 states and 40150 transitions. [2023-01-28 00:04:00,628 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3334329895194911 [2023-01-28 00:04:00,628 INFO L72 ComplementDD]: Start complementDD. Operand 427 states and 40150 transitions. [2023-01-28 00:04:00,628 INFO L73 IsDeterministic]: Start isDeterministic. Operand 427 states and 40150 transitions. [2023-01-28 00:04:00,645 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-01-28 00:04:00,645 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 427 states and 40150 transitions. [2023-01-28 00:04:00,695 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 428 states, 427 states have (on average 94.02810304449649) internal successors, (40150), 427 states have internal predecessors, (40150), 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 00:04:00,825 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 428 states, 428 states have (on average 282.0) internal successors, (120696), 428 states have internal predecessors, (120696), 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 00:04:00,845 INFO L81 ComplementDD]: Finished complementDD. Result has 428 states, 428 states have (on average 282.0) internal successors, (120696), 428 states have internal predecessors, (120696), 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 00:04:00,846 INFO L175 Difference]: Start difference. First operand has 762 places, 2811 transitions, 49028 flow. Second operand 427 states and 40150 transitions. [2023-01-28 00:04:00,846 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 1188 places, 7791 transitions, 163020 flow [2023-01-28 00:04:44,341 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 1177 places, 7791 transitions, 157819 flow, removed 1327 selfloop flow, removed 11 redundant places. [2023-01-28 00:04:44,494 INFO L231 Difference]: Finished difference. Result has 1205 places, 5826 transitions, 113626 flow [2023-01-28 00:04:44,497 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=282, PETRI_DIFFERENCE_MINUEND_FLOW=46804, PETRI_DIFFERENCE_MINUEND_PLACES=751, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=2811, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2498, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=269, PETRI_DIFFERENCE_SUBTRAHEND_STATES=427, PETRI_FLOW=113626, PETRI_PLACES=1205, PETRI_TRANSITIONS=5826} [2023-01-28 00:04:44,505 INFO L281 CegarLoopForPetriNet]: 34 programPoint places, 1171 predicate places. [2023-01-28 00:04:44,506 INFO L495 AbstractCegarLoop]: Abstraction has has 1205 places, 5826 transitions, 113626 flow [2023-01-28 00:04:44,507 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 85 states, 85 states have (on average 90.8) internal successors, (7718), 85 states have internal predecessors, (7718), 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 00:04:44,507 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-01-28 00:04:44,507 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2023-01-28 00:04:44,528 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-01-28 00:04:44,708 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,SelfDestructingSolverStorable15 [2023-01-28 00:04:44,708 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting t2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-01-28 00:04:44,708 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-01-28 00:04:44,708 INFO L85 PathProgramCache]: Analyzing trace with hash -809020241, now seen corresponding path program 5 times [2023-01-28 00:04:44,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-01-28 00:04:44,708 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956229988] [2023-01-28 00:04:44,708 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-01-28 00:04:44,709 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-01-28 00:04:44,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-01-28 00:04:46,564 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:04:46,565 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-01-28 00:04:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956229988] [2023-01-28 00:04:46,565 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956229988] provided 0 perfect and 1 imperfect interpolant sequences [2023-01-28 00:04:46,565 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1921838757] [2023-01-28 00:04:46,565 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-01-28 00:04:46,565 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-01-28 00:04:46,565 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-01-28 00:04:46,566 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 00:04:46,572 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 00:04:46,718 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 3 check-sat command(s) [2023-01-28 00:04:46,718 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-01-28 00:04:46,721 INFO L263 TraceCheckSpWp]: Trace formula consists of 391 conjuncts, 122 conjunts are in the unsatisfiable core [2023-01-28 00:04:46,723 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-01-28 00:04:46,759 INFO L321 Elim1Store]: treesize reduction 13, result has 48.0 percent of original size [2023-01-28 00:04:46,759 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 29 treesize of output 34 [2023-01-28 00:04:47,190 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2023-01-28 00:04:47,294 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 40 treesize of output 36 [2023-01-28 00:04:47,941 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2023-01-28 00:04:48,558 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 45 treesize of output 32 [2023-01-28 00:04:50,244 INFO L173 IndexEqualityManager]: detected equality via solver [2023-01-28 00:04:50,245 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 83 treesize of output 43 [2023-01-28 00:04:50,407 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:04:50,407 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-01-28 00:04:59,549 WARN L839 $PredicateComparison]: unable to prove that (forall ((v_~top~0_92 Int) (v_ArrVal_824 (Array Int Int))) (or (<= v_~top~0_92 1) (not (= (mod (select (select (store |c_#memory_int| |c_ULTIMATE.start_main_~#id2~0#1.base| v_ArrVal_824) |c_~#arr~0.base|) (+ |c_~#arr~0.offset| (* v_~top~0_92 4) (- 8))) 4294967296) 4294967294)) (< (+ 2 c_~top~0) v_~top~0_92))) is different from false [2023-01-28 00:04:59,561 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 00:04:59,562 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 31 [2023-01-28 00:04:59,576 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-01-28 00:04:59,576 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 51 treesize of output 54 [2023-01-28 00:04:59,586 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 22 [2023-01-28 00:05:00,324 INFO L134 CoverageAnalysis]: Checked inductivity of 45 backedges. 0 proven. 45 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-01-28 00:05:00,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1921838757] provided 0 perfect and 2 imperfect interpolant sequences [2023-01-28 00:05:00,325 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-01-28 00:05:00,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 29, 28] total 83 [2023-01-28 00:05:00,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569480057] [2023-01-28 00:05:00,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-01-28 00:05:00,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 85 states [2023-01-28 00:05:00,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-01-28 00:05:00,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 85 interpolants. [2023-01-28 00:05:00,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=625, Invalid=6350, Unknown=1, NotChecked=164, Total=7140 [2023-01-28 00:05:00,333 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 85 out of 282 [2023-01-28 00:05:00,336 INFO L100 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 1205 places, 5826 transitions, 113626 flow. Second operand has 85 states, 85 states have (on average 86.8) internal successors, (7378), 85 states have internal predecessors, (7378), 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 00:05:00,336 INFO L109 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-01-28 00:05:00,336 INFO L110 encePairwiseOnDemand]: Number of universal subtrahend loopers: 85 of 282 [2023-01-28 00:05:00,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-01-28 00:05:13,141 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:16,451 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:20,252 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.81s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:22,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:24,289 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:26,528 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.68s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:35,319 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:05:53,507 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:06:12,492 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.07s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:06:13,718 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.18s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] [2023-01-28 00:06:15,082 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [1] Received shutdown request... [2023-01-28 00:06:37,366 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 00:06:37,367 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-01-28 00:06:38,027 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 77 states. [2023-01-28 00:06:38,028 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 6 remaining) [2023-01-28 00:06:38,044 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 00:06:38,229 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,SelfDestructingSolverStorable16 [2023-01-28 00:06:38,229 WARN L619 AbstractCegarLoop]: Verification canceled: while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 155 known predicates. [2023-01-28 00:06:38,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-01-28 00:06:38,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-01-28 00:06:38,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2023-01-28 00:06:38,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2023-01-28 00:06:38,231 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location t1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-01-28 00:06:38,231 INFO L445 BasicCegarLoop]: Path program histogram: [5, 4, 2, 2, 1, 1, 1, 1] [2023-01-28 00:06:38,235 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2023-01-28 00:06:38,235 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-01-28 00:06:38,236 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.01 12:06:38 BasicIcfg [2023-01-28 00:06:38,236 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-01-28 00:06:38,251 INFO L158 Benchmark]: Toolchain (without parser) took 856185.62ms. Allocated memory was 375.4MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 334.5MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 4.4GB. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 375.4MB. Free memory is still 325.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: CACSL2BoogieTranslator took 474.96ms. Allocated memory is still 375.4MB. Free memory was 334.5MB in the beginning and 305.3MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.60ms. Allocated memory is still 375.4MB. Free memory was 305.3MB in the beginning and 302.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: Boogie Preprocessor took 28.92ms. Allocated memory is still 375.4MB. Free memory was 302.6MB in the beginning and 300.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: RCFGBuilder took 359.16ms. Allocated memory is still 375.4MB. Free memory was 300.9MB in the beginning and 283.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. [2023-01-28 00:06:38,252 INFO L158 Benchmark]: TraceAbstraction took 855266.13ms. Allocated memory was 375.4MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 283.0MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-01-28 00:06:38,253 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 375.4MB. Free memory is still 325.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 474.96ms. Allocated memory is still 375.4MB. Free memory was 334.5MB in the beginning and 305.3MB in the end (delta: 29.2MB). Peak memory consumption was 29.4MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.60ms. Allocated memory is still 375.4MB. Free memory was 305.3MB in the beginning and 302.6MB in the end (delta: 2.7MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 28.92ms. Allocated memory is still 375.4MB. Free memory was 302.6MB in the beginning and 300.9MB in the end (delta: 1.7MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 359.16ms. Allocated memory is still 375.4MB. Free memory was 300.9MB in the beginning and 283.4MB in the end (delta: 17.5MB). Peak memory consumption was 18.9MB. Max. memory is 16.0GB. * TraceAbstraction took 855266.13ms. Allocated memory was 375.4MB in the beginning and 12.4GB in the end (delta: 12.1GB). Free memory was 283.0MB in the beginning and 8.0GB in the end (delta: -7.7GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 137 PlacesBefore, 34 PlacesAfterwards, 140 TransitionsBefore, 32 TransitionsAfterwards, 6492 CoEnabledTransitionPairs, 6 FixpointIterations, 26 TrivialSequentialCompositions, 74 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 5 ChoiceCompositions, 131 TotalNumberOfCompositions, 8978 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6450, independent: 6265, independent conditional: 0, independent unconditional: 6265, dependent: 185, dependent conditional: 0, dependent unconditional: 185, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3562, independent: 3515, independent conditional: 0, independent unconditional: 3515, dependent: 47, dependent conditional: 0, dependent unconditional: 47, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6450, independent: 2750, independent conditional: 0, independent unconditional: 2750, dependent: 138, dependent conditional: 0, dependent unconditional: 138, unknown: 3562, unknown conditional: 0, unknown unconditional: 3562] , Statistics on independence cache: Total cache size (in pairs): 142, Positive cache size: 127, Positive conditional cache size: 0, Positive unconditional cache size: 127, Negative cache size: 15, Negative conditional cache size: 0, Negative unconditional cache size: 15, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 155 known predicates. - TimeoutResultAtElement [Line: 1021]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 155 known predicates. - TimeoutResultAtElement [Line: 1022]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 155 known predicates. - TimeoutResultAtElement [Line: 941]: Timeout (TraceAbstraction) Unable to prove that call to reach_error is unreachable Cancelled while PredicateComparison was comparing new predicate (quantified with 0quantifier alternations) to 155 known predicates. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 236 locations, 6 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: 855.1s, OverallIterations: 17, TraceHistogramMax: 4, PathProgramHistogramMax: 5, EmptinessCheckTime: 0.0s, AutomataDifference: 792.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 271 mSolverCounterUnknown, 14084 SdHoareTripleChecker+Valid, 133.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 14084 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 127.2s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 2741 IncrementalHoareTripleChecker+Unchecked, 6 mSDsCounter, 1422 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 58164 IncrementalHoareTripleChecker+Invalid, 62598 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1422 mSolverCounterUnsat, 3 mSDtfsCounter, 58164 mSolverCounterSat, 0.4s SdHoareTripleChecker+Time, 271 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2109 GetRequests, 441 SyntacticMatches, 42 SemanticMatches, 1625 ConstructedPredicates, 4 IntricatePredicates, 8 DeprecatedPredicates, 173230 ImplicationChecksByTransitivity, 523.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=113626occurred in iteration=16, InterpolantAutomatonStates: 1155, 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: 0.2s SsaConstructionTime, 0.7s SatisfiabilityAnalysisTime, 56.4s InterpolantComputationTime, 799 NumberOfCodeBlocks, 799 NumberOfCodeBlocksAsserted, 35 NumberOfCheckSat, 1079 ConstructedInterpolants, 77 QuantifiedInterpolants, 23295 SizeOfPredicates, 234 NumberOfNonLiveVariables, 3024 ConjunctsInSsa, 585 ConjunctsInUnsatCore, 36 InterpolantComputations, 8 PerfectInterpolantSequences, 64/628 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown