/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:38:24,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:38:24,907 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:38:24,910 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:38:24,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:38:24,910 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:38:24,911 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:38:24,939 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:38:24,939 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:38:24,942 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:38:24,943 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:38:24,943 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:38:24,943 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:38:24,944 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:38:24,944 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:38:24,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:38:24,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:38:24,946 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:38:24,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:38:24,947 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:38:24,947 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:38:24,947 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:38:24,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:38:24,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:38:24,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:38:24,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:38:24,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:38:24,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:38:24,949 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:38:25,146 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:38:25,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:38:25,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:38:25,164 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:38:25,164 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:38:25,164 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:38:26,096 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:38:26,313 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:38:26,313 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:38:26,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56cb9e093/3739aa77572f483fa687827e5683243c/FLAG5e8762732 [2023-08-03 18:38:26,335 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/56cb9e093/3739aa77572f483fa687827e5683243c [2023-08-03 18:38:26,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:38:26,338 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:38:26,339 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:38:26,339 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:38:26,341 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:38:26,342 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,342 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13182ace and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26, skipping insertion in model container [2023-08-03 18:38:26,342 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,373 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:38:26,476 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:38:26,562 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:38:26,568 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:38:26,576 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i[975,988] [2023-08-03 18:38:26,582 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:38:26,583 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:38:26,595 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:38:26,614 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:38:26,614 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:38:26,619 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:38:26,619 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26 WrapperNode [2023-08-03 18:38:26,619 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:38:26,620 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:38:26,620 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:38:26,620 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:38:26,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,633 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,647 INFO L138 Inliner]: procedures = 176, calls = 53, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 94 [2023-08-03 18:38:26,647 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:38:26,648 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:38:26,648 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:38:26,648 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:38:26,654 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,654 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,656 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,656 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,660 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,663 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,664 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,664 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,666 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:38:26,667 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:38:26,667 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:38:26,667 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:38:26,667 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (1/1) ... [2023-08-03 18:38:26,671 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:38:26,681 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:26,710 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) [2023-08-03 18:38:26,717 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 [2023-08-03 18:38:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:38:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:38:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:38:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:38:26,736 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:38:26,737 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:38:26,737 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:38:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:38:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:38:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:38:26,738 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:38:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:38:26,738 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:38:26,739 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:38:26,739 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:38:26,740 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:38:26,841 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:38:26,842 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:38:26,954 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:38:26,959 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:38:26,959 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:38:26,961 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:38:26 BoogieIcfgContainer [2023-08-03 18:38:26,961 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:38:26,963 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:38:26,963 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:38:26,965 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:38:26,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:38:26" (1/3) ... [2023-08-03 18:38:26,965 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90003b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:38:26, skipping insertion in model container [2023-08-03 18:38:26,965 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:38:26" (2/3) ... [2023-08-03 18:38:26,966 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b90003b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:38:26, skipping insertion in model container [2023-08-03 18:38:26,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:38:26" (3/3) ... [2023-08-03 18:38:26,967 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe020_pso.oepc_pso.opt_tso.oepc_tso.opt_bound2.i [2023-08-03 18:38:26,972 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:38:26,978 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:38:26,979 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:38:26,979 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:38:27,015 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:38:27,038 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 106 places, 104 transitions, 223 flow [2023-08-03 18:38:27,154 INFO L124 PetriNetUnfolderBase]: 30/411 cut-off events. [2023-08-03 18:38:27,154 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:38:27,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 436 conditions, 411 events. 30/411 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 1852 event pairs, 0 based on Foata normal form. 0/359 useless extension candidates. Maximal degree in co-relation 240. Up to 16 conditions per place. [2023-08-03 18:38:27,161 INFO L82 GeneralOperation]: Start removeDead. Operand has 106 places, 104 transitions, 223 flow [2023-08-03 18:38:27,164 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 95 places, 92 transitions, 199 flow [2023-08-03 18:38:27,167 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:38:27,172 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 95 places, 92 transitions, 199 flow [2023-08-03 18:38:27,175 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 95 places, 92 transitions, 199 flow [2023-08-03 18:38:27,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 95 places, 92 transitions, 199 flow [2023-08-03 18:38:27,231 INFO L124 PetriNetUnfolderBase]: 22/315 cut-off events. [2023-08-03 18:38:27,231 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:38:27,232 INFO L83 FinitePrefix]: Finished finitePrefix Result has 340 conditions, 315 events. 22/315 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1296 event pairs, 0 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 192. Up to 16 conditions per place. [2023-08-03 18:38:27,234 INFO L119 LiptonReduction]: Number of co-enabled transitions 1586 [2023-08-03 18:38:28,786 INFO L134 LiptonReduction]: Checked pairs total: 2724 [2023-08-03 18:38:28,786 INFO L136 LiptonReduction]: Total number of compositions: 76 [2023-08-03 18:38:28,796 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:38:28,800 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=true, 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;@536a28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:38:28,800 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:38:28,803 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:38:28,803 INFO L124 PetriNetUnfolderBase]: 0/10 cut-off events. [2023-08-03 18:38:28,803 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:38:28,803 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:28,804 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:38:28,804 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:28,807 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:28,808 INFO L85 PathProgramCache]: Analyzing trace with hash 351616564, now seen corresponding path program 1 times [2023-08-03 18:38:28,814 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:28,814 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1288292410] [2023-08-03 18:38:28,814 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:28,814 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:28,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:28,972 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:38:28,973 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:28,973 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1288292410] [2023-08-03 18:38:28,973 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1288292410] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:28,973 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:38:28,974 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:38:28,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [390888193] [2023-08-03 18:38:28,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:28,981 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:29,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:29,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:38:29,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 91 out of 180 [2023-08-03 18:38:29,027 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-03 18:38:29,028 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:29,028 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 91 of 180 [2023-08-03 18:38:29,028 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:29,128 INFO L124 PetriNetUnfolderBase]: 400/751 cut-off events. [2023-08-03 18:38:29,128 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-03 18:38:29,132 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 751 events. 400/751 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 50. Compared 3706 event pairs, 222 based on Foata normal form. 0/688 useless extension candidates. Maximal degree in co-relation 1459. Up to 668 conditions per place. [2023-08-03 18:38:29,137 INFO L140 encePairwiseOnDemand]: 176/180 looper letters, 21 selfloop transitions, 2 changer transitions 0/28 dead transitions. [2023-08-03 18:38:29,137 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 28 transitions, 117 flow [2023-08-03 18:38:29,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:29,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-03 18:38:29,149 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5518518518518518 [2023-08-03 18:38:29,149 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-03 18:38:29,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-03 18:38:29,151 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:29,152 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-03 18:38:29,155 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 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) [2023-08-03 18:38:29,160 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-08-03 18:38:29,160 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 180.0) internal successors, (720), 4 states have internal predecessors, (720), 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) [2023-08-03 18:38:29,162 INFO L175 Difference]: Start difference. First operand has 32 places, 26 transitions, 67 flow. Second operand 3 states and 298 transitions. [2023-08-03 18:38:29,162 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 28 transitions, 117 flow [2023-08-03 18:38:29,164 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 34 places, 28 transitions, 117 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:38:29,165 INFO L231 Difference]: Finished difference. Result has 35 places, 25 transitions, 73 flow [2023-08-03 18:38:29,166 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=180, PETRI_DIFFERENCE_MINUEND_FLOW=65, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=73, PETRI_PLACES=35, PETRI_TRANSITIONS=25} [2023-08-03 18:38:29,168 INFO L281 CegarLoopForPetriNet]: 32 programPoint places, 3 predicate places. [2023-08-03 18:38:29,169 INFO L495 AbstractCegarLoop]: Abstraction has has 35 places, 25 transitions, 73 flow [2023-08-03 18:38:29,169 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 92.66666666666667) internal successors, (278), 3 states have internal predecessors, (278), 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) [2023-08-03 18:38:29,169 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:29,169 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:38:29,169 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:38:29,169 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:29,170 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:29,170 INFO L85 PathProgramCache]: Analyzing trace with hash -1990279823, now seen corresponding path program 1 times [2023-08-03 18:38:29,170 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:29,170 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284508797] [2023-08-03 18:38:29,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:29,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:29,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:38:29,185 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:38:29,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:38:29,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:38:29,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:38:29,207 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:38:29,208 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:38:29,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:38:29,209 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:38:29,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:38:29,209 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:38:29,211 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:38:29,211 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:38:29,224 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:38:29,227 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 124 transitions, 284 flow [2023-08-03 18:38:29,322 INFO L124 PetriNetUnfolderBase]: 93/1297 cut-off events. [2023-08-03 18:38:29,322 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:38:29,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1395 conditions, 1297 events. 93/1297 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 8887 event pairs, 0 based on Foata normal form. 0/1138 useless extension candidates. Maximal degree in co-relation 938. Up to 54 conditions per place. [2023-08-03 18:38:29,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 132 places, 124 transitions, 284 flow [2023-08-03 18:38:29,329 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 121 places, 112 transitions, 260 flow [2023-08-03 18:38:29,329 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:38:29,329 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 121 places, 112 transitions, 260 flow [2023-08-03 18:38:29,329 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 121 places, 112 transitions, 260 flow [2023-08-03 18:38:29,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 121 places, 112 transitions, 260 flow [2023-08-03 18:38:29,386 INFO L124 PetriNetUnfolderBase]: 66/973 cut-off events. [2023-08-03 18:38:29,386 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:38:29,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1071 conditions, 973 events. 66/973 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6119 event pairs, 0 based on Foata normal form. 0/868 useless extension candidates. Maximal degree in co-relation 722. Up to 54 conditions per place. [2023-08-03 18:38:29,398 INFO L119 LiptonReduction]: Number of co-enabled transitions 3852 [2023-08-03 18:38:30,745 INFO L134 LiptonReduction]: Checked pairs total: 7347 [2023-08-03 18:38:30,745 INFO L136 LiptonReduction]: Total number of compositions: 82 [2023-08-03 18:38:30,747 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:38:30,747 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=true, 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;@536a28, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:38:30,747 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:38:30,749 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:38:30,749 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-03 18:38:30,749 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:38:30,750 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:30,750 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:38:30,750 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:30,750 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:30,750 INFO L85 PathProgramCache]: Analyzing trace with hash 567379828, now seen corresponding path program 1 times [2023-08-03 18:38:30,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:30,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [196214658] [2023-08-03 18:38:30,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:30,751 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:30,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:30,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:38:30,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:30,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [196214658] [2023-08-03 18:38:30,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [196214658] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:30,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:38:30,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:38:30,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882416606] [2023-08-03 18:38:30,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:30,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:30,842 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:30,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:30,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:38:30,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 206 [2023-08-03 18:38:30,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 40 transitions, 116 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2023-08-03 18:38:30,851 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:30,851 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 206 [2023-08-03 18:38:30,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:33,806 INFO L124 PetriNetUnfolderBase]: 33046/47186 cut-off events. [2023-08-03 18:38:33,806 INFO L125 PetriNetUnfolderBase]: For 1848/1848 co-relation queries the response was YES. [2023-08-03 18:38:33,879 INFO L83 FinitePrefix]: Finished finitePrefix Result has 93375 conditions, 47186 events. 33046/47186 cut-off events. For 1848/1848 co-relation queries the response was YES. Maximal size of possible extension queue 1517. Compared 317509 event pairs, 26064 based on Foata normal form. 0/44884 useless extension candidates. Maximal degree in co-relation 26464. Up to 43520 conditions per place. [2023-08-03 18:38:34,041 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 31 selfloop transitions, 2 changer transitions 0/43 dead transitions. [2023-08-03 18:38:34,041 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 43 transitions, 188 flow [2023-08-03 18:38:34,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:34,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:34,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 359 transitions. [2023-08-03 18:38:34,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580906148867314 [2023-08-03 18:38:34,044 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 359 transitions. [2023-08-03 18:38:34,044 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 359 transitions. [2023-08-03 18:38:34,044 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:34,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 359 transitions. [2023-08-03 18:38:34,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.66666666666667) internal successors, (359), 3 states have internal predecessors, (359), 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) [2023-08-03 18:38:34,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:34,048 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:34,048 INFO L175 Difference]: Start difference. First operand has 52 places, 40 transitions, 116 flow. Second operand 3 states and 359 transitions. [2023-08-03 18:38:34,048 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 43 transitions, 188 flow [2023-08-03 18:38:34,054 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 43 transitions, 182 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:38:34,055 INFO L231 Difference]: Finished difference. Result has 55 places, 40 transitions, 120 flow [2023-08-03 18:38:34,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=108, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=39, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=120, PETRI_PLACES=55, PETRI_TRANSITIONS=40} [2023-08-03 18:38:34,056 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-03 18:38:34,056 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 40 transitions, 120 flow [2023-08-03 18:38:34,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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) [2023-08-03 18:38:34,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:34,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:34,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:38:34,057 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:34,057 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:34,057 INFO L85 PathProgramCache]: Analyzing trace with hash 948619575, now seen corresponding path program 1 times [2023-08-03 18:38:34,057 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:34,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551205372] [2023-08-03 18:38:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:34,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:34,121 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:38:34,122 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551205372] [2023-08-03 18:38:34,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [551205372] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:34,123 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1731468367] [2023-08-03 18:38:34,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:34,124 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:34,124 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:34,143 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) [2023-08-03 18:38:34,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 18:38:34,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:34,242 INFO L262 TraceCheckSpWp]: Trace formula consists of 112 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:38:34,243 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:34,267 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:38:34,267 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:38:34,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1731468367] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:34,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:38:34,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:38:34,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [571275093] [2023-08-03 18:38:34,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:34,268 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:34,269 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:34,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:34,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:34,283 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 206 [2023-08-03 18:38:34,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 40 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-08-03 18:38:34,283 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:34,283 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 206 [2023-08-03 18:38:34,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:36,583 INFO L124 PetriNetUnfolderBase]: 31406/45080 cut-off events. [2023-08-03 18:38:36,584 INFO L125 PetriNetUnfolderBase]: For 1215/1215 co-relation queries the response was YES. [2023-08-03 18:38:36,816 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88432 conditions, 45080 events. 31406/45080 cut-off events. For 1215/1215 co-relation queries the response was YES. Maximal size of possible extension queue 1570. Compared 304033 event pairs, 24928 based on Foata normal form. 0/42907 useless extension candidates. Maximal degree in co-relation 88395. Up to 40987 conditions per place. [2023-08-03 18:38:36,968 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 36 selfloop transitions, 2 changer transitions 0/48 dead transitions. [2023-08-03 18:38:36,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 48 transitions, 212 flow [2023-08-03 18:38:36,968 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:36,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:36,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 362 transitions. [2023-08-03 18:38:36,970 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5857605177993528 [2023-08-03 18:38:36,970 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 362 transitions. [2023-08-03 18:38:36,970 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 362 transitions. [2023-08-03 18:38:36,970 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:36,970 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 362 transitions. [2023-08-03 18:38:36,972 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 120.66666666666667) internal successors, (362), 3 states have internal predecessors, (362), 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) [2023-08-03 18:38:36,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:36,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:36,975 INFO L175 Difference]: Start difference. First operand has 55 places, 40 transitions, 120 flow. Second operand 3 states and 362 transitions. [2023-08-03 18:38:36,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 48 transitions, 212 flow [2023-08-03 18:38:36,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 48 transitions, 210 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:38:36,977 INFO L231 Difference]: Finished difference. Result has 57 places, 41 transitions, 130 flow [2023-08-03 18:38:36,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=130, PETRI_PLACES=57, PETRI_TRANSITIONS=41} [2023-08-03 18:38:36,979 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 5 predicate places. [2023-08-03 18:38:36,979 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 41 transitions, 130 flow [2023-08-03 18:38:36,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.66666666666667) internal successors, (332), 3 states have internal predecessors, (332), 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) [2023-08-03 18:38:36,979 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:36,979 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:38:36,987 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:37,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:37,184 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:37,185 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:37,185 INFO L85 PathProgramCache]: Analyzing trace with hash 907791481, now seen corresponding path program 1 times [2023-08-03 18:38:37,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:37,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320453526] [2023-08-03 18:38:37,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:37,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:37,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:37,228 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:38:37,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:37,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [320453526] [2023-08-03 18:38:37,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [320453526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:37,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:38:37,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 18:38:37,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351354011] [2023-08-03 18:38:37,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:37,229 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:37,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:37,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:37,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:37,242 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:37,242 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 41 transitions, 130 flow. Second operand has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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) [2023-08-03 18:38:37,242 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:37,242 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:37,242 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:39,739 INFO L124 PetriNetUnfolderBase]: 31394/45039 cut-off events. [2023-08-03 18:38:39,739 INFO L125 PetriNetUnfolderBase]: For 1503/1503 co-relation queries the response was YES. [2023-08-03 18:38:39,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 88701 conditions, 45039 events. 31394/45039 cut-off events. For 1503/1503 co-relation queries the response was YES. Maximal size of possible extension queue 1558. Compared 303974 event pairs, 20088 based on Foata normal form. 9/43019 useless extension candidates. Maximal degree in co-relation 25250. Up to 41065 conditions per place. [2023-08-03 18:38:39,924 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 35 selfloop transitions, 4 changer transitions 0/48 dead transitions. [2023-08-03 18:38:39,924 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 48 transitions, 225 flow [2023-08-03 18:38:39,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:38:39,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:38:39,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 574 transitions. [2023-08-03 18:38:39,926 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5572815533980583 [2023-08-03 18:38:39,926 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 574 transitions. [2023-08-03 18:38:39,927 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 574 transitions. [2023-08-03 18:38:39,927 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:39,927 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 574 transitions. [2023-08-03 18:38:39,928 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 114.8) internal successors, (574), 5 states have internal predecessors, (574), 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) [2023-08-03 18:38:39,930 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:38:39,930 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:38:39,930 INFO L175 Difference]: Start difference. First operand has 57 places, 41 transitions, 130 flow. Second operand 5 states and 574 transitions. [2023-08-03 18:38:39,930 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 48 transitions, 225 flow [2023-08-03 18:38:39,931 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 48 transitions, 221 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:38:39,932 INFO L231 Difference]: Finished difference. Result has 60 places, 41 transitions, 146 flow [2023-08-03 18:38:39,933 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=123, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=146, PETRI_PLACES=60, PETRI_TRANSITIONS=41} [2023-08-03 18:38:39,934 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 8 predicate places. [2023-08-03 18:38:39,934 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 41 transitions, 146 flow [2023-08-03 18:38:39,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 108.6) internal successors, (543), 5 states have internal predecessors, (543), 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) [2023-08-03 18:38:39,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:39,935 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:39,935 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-03 18:38:39,935 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:39,935 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 1275784261, now seen corresponding path program 1 times [2023-08-03 18:38:39,936 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:39,936 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1088924370] [2023-08-03 18:38:39,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:39,936 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:39,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:39,992 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:38:39,992 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:39,992 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1088924370] [2023-08-03 18:38:39,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1088924370] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:39,993 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [61427737] [2023-08-03 18:38:39,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:39,993 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:39,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:39,994 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) [2023-08-03 18:38:39,996 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 18:38:40,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:40,058 INFO L262 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:38:40,058 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:40,063 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 18:38:40,063 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:38:40,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [61427737] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:40,064 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:38:40,064 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:38:40,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1989431800] [2023-08-03 18:38:40,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:40,064 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:40,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:40,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:40,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:40,075 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 206 [2023-08-03 18:38:40,075 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 41 transitions, 146 flow. Second operand has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-03 18:38:40,075 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:40,075 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 206 [2023-08-03 18:38:40,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:42,385 INFO L124 PetriNetUnfolderBase]: 30722/43544 cut-off events. [2023-08-03 18:38:42,385 INFO L125 PetriNetUnfolderBase]: For 889/889 co-relation queries the response was YES. [2023-08-03 18:38:42,454 INFO L83 FinitePrefix]: Finished finitePrefix Result has 86252 conditions, 43544 events. 30722/43544 cut-off events. For 889/889 co-relation queries the response was YES. Maximal size of possible extension queue 1552. Compared 288259 event pairs, 23570 based on Foata normal form. 0/41659 useless extension candidates. Maximal degree in co-relation 24560. Up to 37736 conditions per place. [2023-08-03 18:38:42,579 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 42 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 18:38:42,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 53 transitions, 258 flow [2023-08-03 18:38:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 366 transitions. [2023-08-03 18:38:42,581 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5922330097087378 [2023-08-03 18:38:42,581 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 366 transitions. [2023-08-03 18:38:42,581 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 366 transitions. [2023-08-03 18:38:42,581 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:42,581 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 366 transitions. [2023-08-03 18:38:42,582 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.0) internal successors, (366), 3 states have internal predecessors, (366), 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) [2023-08-03 18:38:42,583 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:42,583 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:42,583 INFO L175 Difference]: Start difference. First operand has 60 places, 41 transitions, 146 flow. Second operand 3 states and 366 transitions. [2023-08-03 18:38:42,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 53 transitions, 258 flow [2023-08-03 18:38:42,586 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 53 transitions, 251 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:38:42,587 INFO L231 Difference]: Finished difference. Result has 61 places, 42 transitions, 151 flow [2023-08-03 18:38:42,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=151, PETRI_PLACES=61, PETRI_TRANSITIONS=42} [2023-08-03 18:38:42,589 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 9 predicate places. [2023-08-03 18:38:42,589 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 42 transitions, 151 flow [2023-08-03 18:38:42,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.66666666666667) internal successors, (335), 3 states have internal predecessors, (335), 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) [2023-08-03 18:38:42,590 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:42,590 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:42,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:42,794 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,SelfDestructingSolverStorable5 [2023-08-03 18:38:42,796 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:42,797 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:42,797 INFO L85 PathProgramCache]: Analyzing trace with hash 354612116, now seen corresponding path program 1 times [2023-08-03 18:38:42,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:42,799 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347140689] [2023-08-03 18:38:42,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:42,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:42,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:42,850 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:38:42,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347140689] [2023-08-03 18:38:42,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347140689] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:42,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1689823895] [2023-08-03 18:38:42,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:42,851 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:42,851 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:42,852 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) [2023-08-03 18:38:42,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 18:38:42,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:42,916 INFO L262 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:38:42,917 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:42,941 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:38:42,942 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:38:42,955 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 18:38:42,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1689823895] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:38:42,955 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:38:42,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 3 [2023-08-03 18:38:42,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563084385] [2023-08-03 18:38:42,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:38:42,956 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:38:42,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:42,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:38:42,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:38:42,964 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:42,965 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 42 transitions, 151 flow. Second operand has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-03 18:38:42,965 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:42,965 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:42,965 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:44,910 INFO L124 PetriNetUnfolderBase]: 24220/34031 cut-off events. [2023-08-03 18:38:44,910 INFO L125 PetriNetUnfolderBase]: For 3738/3738 co-relation queries the response was YES. [2023-08-03 18:38:44,991 INFO L83 FinitePrefix]: Finished finitePrefix Result has 70276 conditions, 34031 events. 24220/34031 cut-off events. For 3738/3738 co-relation queries the response was YES. Maximal size of possible extension queue 1286. Compared 213896 event pairs, 14814 based on Foata normal form. 3/33916 useless extension candidates. Maximal degree in co-relation 24970. Up to 31258 conditions per place. [2023-08-03 18:38:45,091 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 36 selfloop transitions, 3 changer transitions 0/48 dead transitions. [2023-08-03 18:38:45,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 48 transitions, 237 flow [2023-08-03 18:38:45,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:38:45,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:38:45,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 466 transitions. [2023-08-03 18:38:45,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5655339805825242 [2023-08-03 18:38:45,093 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 466 transitions. [2023-08-03 18:38:45,093 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 466 transitions. [2023-08-03 18:38:45,093 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:45,094 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 466 transitions. [2023-08-03 18:38:45,094 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 116.5) internal successors, (466), 4 states have internal predecessors, (466), 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) [2023-08-03 18:38:45,096 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:45,096 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:45,096 INFO L175 Difference]: Start difference. First operand has 61 places, 42 transitions, 151 flow. Second operand 4 states and 466 transitions. [2023-08-03 18:38:45,096 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 48 transitions, 237 flow [2023-08-03 18:38:45,099 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 48 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:38:45,099 INFO L231 Difference]: Finished difference. Result has 63 places, 41 transitions, 147 flow [2023-08-03 18:38:45,100 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=141, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=147, PETRI_PLACES=63, PETRI_TRANSITIONS=41} [2023-08-03 18:38:45,100 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 11 predicate places. [2023-08-03 18:38:45,100 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 41 transitions, 147 flow [2023-08-03 18:38:45,100 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 109.25) internal successors, (437), 4 states have internal predecessors, (437), 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) [2023-08-03 18:38:45,100 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:45,101 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:45,111 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:45,311 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:45,312 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:45,312 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:45,312 INFO L85 PathProgramCache]: Analyzing trace with hash -1711942768, now seen corresponding path program 1 times [2023-08-03 18:38:45,312 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:45,312 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952901671] [2023-08-03 18:38:45,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:45,312 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:45,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:45,369 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:38:45,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:45,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952901671] [2023-08-03 18:38:45,370 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952901671] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:45,370 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1659375907] [2023-08-03 18:38:45,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:45,370 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:45,370 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:45,371 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) [2023-08-03 18:38:45,392 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 18:38:45,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:45,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 145 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:38:45,450 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:45,483 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 18:38:45,483 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:38:45,483 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1659375907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:45,483 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:38:45,483 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:38:45,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69710707] [2023-08-03 18:38:45,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:45,484 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:45,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:45,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:45,484 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:38:45,496 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:45,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 41 transitions, 147 flow. Second operand has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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) [2023-08-03 18:38:45,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:45,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:45,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:47,299 INFO L124 PetriNetUnfolderBase]: 24004/33739 cut-off events. [2023-08-03 18:38:47,299 INFO L125 PetriNetUnfolderBase]: For 3166/3166 co-relation queries the response was YES. [2023-08-03 18:38:47,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69349 conditions, 33739 events. 24004/33739 cut-off events. For 3166/3166 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 212420 event pairs, 6718 based on Foata normal form. 81/33702 useless extension candidates. Maximal degree in co-relation 24641. Up to 30429 conditions per place. [2023-08-03 18:38:47,616 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 48 selfloop transitions, 4 changer transitions 0/60 dead transitions. [2023-08-03 18:38:47,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 60 transitions, 291 flow [2023-08-03 18:38:47,617 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:38:47,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:38:47,618 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 586 transitions. [2023-08-03 18:38:47,618 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5689320388349515 [2023-08-03 18:38:47,618 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 586 transitions. [2023-08-03 18:38:47,618 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 586 transitions. [2023-08-03 18:38:47,619 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:47,619 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 586 transitions. [2023-08-03 18:38:47,620 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 117.2) internal successors, (586), 5 states have internal predecessors, (586), 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) [2023-08-03 18:38:47,621 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:38:47,621 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:38:47,621 INFO L175 Difference]: Start difference. First operand has 63 places, 41 transitions, 147 flow. Second operand 5 states and 586 transitions. [2023-08-03 18:38:47,621 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 60 transitions, 291 flow [2023-08-03 18:38:47,624 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 60 transitions, 284 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:38:47,625 INFO L231 Difference]: Finished difference. Result has 64 places, 41 transitions, 159 flow [2023-08-03 18:38:47,625 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=159, PETRI_PLACES=64, PETRI_TRANSITIONS=41} [2023-08-03 18:38:47,625 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 12 predicate places. [2023-08-03 18:38:47,625 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 41 transitions, 159 flow [2023-08-03 18:38:47,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 109.6) internal successors, (548), 5 states have internal predecessors, (548), 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) [2023-08-03 18:38:47,626 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:47,626 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:47,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:47,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:47,830 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:47,830 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:47,830 INFO L85 PathProgramCache]: Analyzing trace with hash 786176659, now seen corresponding path program 1 times [2023-08-03 18:38:47,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:47,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [687210558] [2023-08-03 18:38:47,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:47,831 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:47,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:47,875 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:38:47,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [687210558] [2023-08-03 18:38:47,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [687210558] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:47,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [675253299] [2023-08-03 18:38:47,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:47,876 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:47,876 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:47,880 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) [2023-08-03 18:38:47,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 18:38:47,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:47,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:38:47,931 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:47,944 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:38:47,944 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:38:47,956 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:38:47,957 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [675253299] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:38:47,957 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:38:47,957 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:38:47,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896660028] [2023-08-03 18:38:47,957 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:38:47,957 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:47,957 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:47,958 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:47,958 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:47,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:47,968 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 41 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2023-08-03 18:38:47,968 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:47,968 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:47,968 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:49,437 INFO L124 PetriNetUnfolderBase]: 18982/26368 cut-off events. [2023-08-03 18:38:49,437 INFO L125 PetriNetUnfolderBase]: For 2971/2971 co-relation queries the response was YES. [2023-08-03 18:38:49,491 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54505 conditions, 26368 events. 18982/26368 cut-off events. For 2971/2971 co-relation queries the response was YES. Maximal size of possible extension queue 1151. Compared 156859 event pairs, 11848 based on Foata normal form. 27/26304 useless extension candidates. Maximal degree in co-relation 19322. Up to 23785 conditions per place. [2023-08-03 18:38:49,570 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 44 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 18:38:49,570 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 275 flow [2023-08-03 18:38:49,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:38:49,572 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:38:49,573 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 474 transitions. [2023-08-03 18:38:49,574 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5752427184466019 [2023-08-03 18:38:49,574 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 474 transitions. [2023-08-03 18:38:49,574 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 474 transitions. [2023-08-03 18:38:49,574 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:49,574 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 474 transitions. [2023-08-03 18:38:49,575 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 118.5) internal successors, (474), 4 states have internal predecessors, (474), 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) [2023-08-03 18:38:49,576 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:49,576 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:49,576 INFO L175 Difference]: Start difference. First operand has 64 places, 41 transitions, 159 flow. Second operand 4 states and 474 transitions. [2023-08-03 18:38:49,576 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 275 flow [2023-08-03 18:38:49,579 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 270 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:38:49,580 INFO L231 Difference]: Finished difference. Result has 65 places, 40 transitions, 150 flow [2023-08-03 18:38:49,580 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=150, PETRI_PLACES=65, PETRI_TRANSITIONS=40} [2023-08-03 18:38:49,580 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 13 predicate places. [2023-08-03 18:38:49,580 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 40 transitions, 150 flow [2023-08-03 18:38:49,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.8) internal successors, (554), 5 states have internal predecessors, (554), 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) [2023-08-03 18:38:49,580 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:49,581 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:49,596 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 18:38:49,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:49,781 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:49,782 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:49,782 INFO L85 PathProgramCache]: Analyzing trace with hash -47358272, now seen corresponding path program 1 times [2023-08-03 18:38:49,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:49,782 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [372516959] [2023-08-03 18:38:49,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:49,782 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:49,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:49,853 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:38:49,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:49,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [372516959] [2023-08-03 18:38:49,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [372516959] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:49,853 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1529058987] [2023-08-03 18:38:49,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:49,853 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:49,854 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:49,855 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) [2023-08-03 18:38:49,857 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 18:38:49,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:49,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:38:49,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:49,947 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:38:49,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:38:49,958 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:38:49,958 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1529058987] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:38:49,958 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:38:49,958 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:38:49,958 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942894318] [2023-08-03 18:38:49,958 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:38:49,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:49,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:49,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:49,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:38:49,968 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:49,969 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 40 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-08-03 18:38:49,969 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:49,969 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:49,969 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:51,404 INFO L124 PetriNetUnfolderBase]: 17362/23371 cut-off events. [2023-08-03 18:38:51,404 INFO L125 PetriNetUnfolderBase]: For 2359/2359 co-relation queries the response was YES. [2023-08-03 18:38:51,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49186 conditions, 23371 events. 17362/23371 cut-off events. For 2359/2359 co-relation queries the response was YES. Maximal size of possible extension queue 1061. Compared 128825 event pairs, 6886 based on Foata normal form. 243/23523 useless extension candidates. Maximal degree in co-relation 17441. Up to 11794 conditions per place. [2023-08-03 18:38:51,479 INFO L140 encePairwiseOnDemand]: 202/206 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 18:38:51,479 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 64 transitions, 310 flow [2023-08-03 18:38:51,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:38:51,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:38:51,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 483 transitions. [2023-08-03 18:38:51,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5861650485436893 [2023-08-03 18:38:51,481 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 483 transitions. [2023-08-03 18:38:51,481 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 483 transitions. [2023-08-03 18:38:51,481 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:51,481 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 483 transitions. [2023-08-03 18:38:51,482 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 120.75) internal successors, (483), 4 states have internal predecessors, (483), 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) [2023-08-03 18:38:51,483 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:51,483 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 206.0) internal successors, (1030), 5 states have internal predecessors, (1030), 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) [2023-08-03 18:38:51,483 INFO L175 Difference]: Start difference. First operand has 65 places, 40 transitions, 150 flow. Second operand 4 states and 483 transitions. [2023-08-03 18:38:51,483 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 64 transitions, 310 flow [2023-08-03 18:38:51,485 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 64 transitions, 304 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:38:51,485 INFO L231 Difference]: Finished difference. Result has 67 places, 41 transitions, 164 flow [2023-08-03 18:38:51,486 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=67, PETRI_TRANSITIONS=41} [2023-08-03 18:38:51,486 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 15 predicate places. [2023-08-03 18:38:51,486 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 41 transitions, 164 flow [2023-08-03 18:38:51,486 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 111.0) internal successors, (555), 5 states have internal predecessors, (555), 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) [2023-08-03 18:38:51,486 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:51,486 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:51,509 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-03 18:38:51,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:51,691 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:51,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:51,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1228943477, now seen corresponding path program 1 times [2023-08-03 18:38:51,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:51,691 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1859508011] [2023-08-03 18:38:51,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:51,691 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:51,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:51,794 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:38:51,794 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:51,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1859508011] [2023-08-03 18:38:51,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1859508011] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:51,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:38:51,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:38:51,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433761602] [2023-08-03 18:38:51,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:51,795 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:38:51,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:51,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:38:51,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:38:51,807 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 206 [2023-08-03 18:38:51,808 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 41 transitions, 164 flow. Second operand has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-03 18:38:51,808 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:51,808 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 206 [2023-08-03 18:38:51,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:38:58,544 INFO L124 PetriNetUnfolderBase]: 89449/115639 cut-off events. [2023-08-03 18:38:58,544 INFO L125 PetriNetUnfolderBase]: For 50131/50131 co-relation queries the response was YES. [2023-08-03 18:38:58,884 INFO L83 FinitePrefix]: Finished finitePrefix Result has 265196 conditions, 115639 events. 89449/115639 cut-off events. For 50131/50131 co-relation queries the response was YES. Maximal size of possible extension queue 3959. Compared 658214 event pairs, 38406 based on Foata normal form. 1737/117357 useless extension candidates. Maximal degree in co-relation 265104. Up to 73594 conditions per place. [2023-08-03 18:38:59,229 INFO L140 encePairwiseOnDemand]: 196/206 looper letters, 62 selfloop transitions, 9 changer transitions 0/75 dead transitions. [2023-08-03 18:38:59,229 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 75 transitions, 449 flow [2023-08-03 18:38:59,229 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:38:59,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:38:59,230 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-03 18:38:59,230 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5938511326860841 [2023-08-03 18:38:59,230 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-03 18:38:59,230 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-03 18:38:59,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:38:59,230 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-03 18:38:59,231 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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) [2023-08-03 18:38:59,232 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:59,232 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:38:59,232 INFO L175 Difference]: Start difference. First operand has 67 places, 41 transitions, 164 flow. Second operand 3 states and 367 transitions. [2023-08-03 18:38:59,232 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 75 transitions, 449 flow [2023-08-03 18:38:59,277 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 75 transitions, 441 flow, removed 2 selfloop flow, removed 1 redundant places. [2023-08-03 18:38:59,278 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 230 flow [2023-08-03 18:38:59,278 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=230, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-03 18:38:59,278 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 18 predicate places. [2023-08-03 18:38:59,278 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 230 flow [2023-08-03 18:38:59,279 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 106.66666666666667) internal successors, (320), 3 states have internal predecessors, (320), 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) [2023-08-03 18:38:59,279 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:38:59,279 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:38:59,279 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 18:38:59,279 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:38:59,279 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:38:59,279 INFO L85 PathProgramCache]: Analyzing trace with hash -1228944056, now seen corresponding path program 1 times [2023-08-03 18:38:59,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:38:59,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [470124818] [2023-08-03 18:38:59,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:59,280 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:38:59,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:59,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:38:59,326 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:38:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [470124818] [2023-08-03 18:38:59,326 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [470124818] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:38:59,326 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1600842207] [2023-08-03 18:38:59,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:38:59,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:38:59,327 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:38:59,328 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) [2023-08-03 18:38:59,330 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:38:59,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:38:59,401 INFO L262 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:38:59,403 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:38:59,419 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:38:59,419 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:38:59,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1600842207] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:38:59,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:38:59,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:38:59,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201601994] [2023-08-03 18:38:59,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:38:59,420 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:38:59,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:38:59,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:38:59,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:38:59,429 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 206 [2023-08-03 18:38:59,430 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 230 flow. Second operand has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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) [2023-08-03 18:38:59,430 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:38:59,430 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 206 [2023-08-03 18:38:59,430 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:39:03,790 INFO L124 PetriNetUnfolderBase]: 53770/70991 cut-off events. [2023-08-03 18:39:03,791 INFO L125 PetriNetUnfolderBase]: For 38994/40632 co-relation queries the response was YES. [2023-08-03 18:39:04,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 188093 conditions, 70991 events. 53770/70991 cut-off events. For 38994/40632 co-relation queries the response was YES. Maximal size of possible extension queue 3306. Compared 424794 event pairs, 3267 based on Foata normal form. 2799/70044 useless extension candidates. Maximal degree in co-relation 90388. Up to 42687 conditions per place. [2023-08-03 18:39:04,312 INFO L140 encePairwiseOnDemand]: 203/206 looper letters, 73 selfloop transitions, 3 changer transitions 0/87 dead transitions. [2023-08-03 18:39:04,312 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 87 transitions, 508 flow [2023-08-03 18:39:04,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:39:04,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:39:04,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 597 transitions. [2023-08-03 18:39:04,314 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.579611650485437 [2023-08-03 18:39:04,314 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 597 transitions. [2023-08-03 18:39:04,314 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 597 transitions. [2023-08-03 18:39:04,314 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:39:04,314 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 597 transitions. [2023-08-03 18:39:04,315 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 119.4) internal successors, (597), 5 states have internal predecessors, (597), 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) [2023-08-03 18:39:04,316 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:39:04,316 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 206.0) internal successors, (1236), 6 states have internal predecessors, (1236), 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) [2023-08-03 18:39:04,316 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 230 flow. Second operand 5 states and 597 transitions. [2023-08-03 18:39:04,316 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 87 transitions, 508 flow [2023-08-03 18:39:04,613 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 87 transitions, 469 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:39:04,614 INFO L231 Difference]: Finished difference. Result has 69 places, 47 transitions, 205 flow [2023-08-03 18:39:04,614 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=199, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=205, PETRI_PLACES=69, PETRI_TRANSITIONS=47} [2023-08-03 18:39:04,614 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2023-08-03 18:39:04,615 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 47 transitions, 205 flow [2023-08-03 18:39:04,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.6) internal successors, (553), 5 states have internal predecessors, (553), 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) [2023-08-03 18:39:04,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:39:04,616 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:39:04,623 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:39:04,820 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:04,821 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:39:04,821 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:39:04,821 INFO L85 PathProgramCache]: Analyzing trace with hash 325653302, now seen corresponding path program 1 times [2023-08-03 18:39:04,821 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:39:04,821 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [286631878] [2023-08-03 18:39:04,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:04,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:39:04,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:04,947 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:39:04,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:39:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [286631878] [2023-08-03 18:39:04,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [286631878] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:39:04,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [617696534] [2023-08-03 18:39:04,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:04,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:04,948 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:39:04,971 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) [2023-08-03 18:39:04,972 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:39:05,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:05,053 INFO L262 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-03 18:39:05,055 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:39:05,092 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:39:05,092 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:39:05,092 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [617696534] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:39:05,092 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:39:05,092 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 4 [2023-08-03 18:39:05,093 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382683142] [2023-08-03 18:39:05,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:39:05,093 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:39:05,093 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:39:05,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:39:05,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:39:05,102 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 206 [2023-08-03 18:39:05,102 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 47 transitions, 205 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-08-03 18:39:05,102 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:39:05,102 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 206 [2023-08-03 18:39:05,102 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:39:08,872 INFO L124 PetriNetUnfolderBase]: 48769/63910 cut-off events. [2023-08-03 18:39:08,873 INFO L125 PetriNetUnfolderBase]: For 45437/45551 co-relation queries the response was YES. [2023-08-03 18:39:09,109 INFO L83 FinitePrefix]: Finished finitePrefix Result has 162534 conditions, 63910 events. 48769/63910 cut-off events. For 45437/45551 co-relation queries the response was YES. Maximal size of possible extension queue 2873. Compared 377116 event pairs, 11773 based on Foata normal form. 211/59659 useless extension candidates. Maximal degree in co-relation 101181. Up to 55966 conditions per place. [2023-08-03 18:39:09,532 INFO L140 encePairwiseOnDemand]: 198/206 looper letters, 61 selfloop transitions, 7 changer transitions 0/79 dead transitions. [2023-08-03 18:39:09,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 79 transitions, 487 flow [2023-08-03 18:39:09,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:39:09,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:39:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 370 transitions. [2023-08-03 18:39:09,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.598705501618123 [2023-08-03 18:39:09,534 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 370 transitions. [2023-08-03 18:39:09,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 370 transitions. [2023-08-03 18:39:09,534 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:39:09,534 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 370 transitions. [2023-08-03 18:39:09,535 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 123.33333333333333) internal successors, (370), 3 states have internal predecessors, (370), 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) [2023-08-03 18:39:09,535 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:39:09,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 206.0) internal successors, (824), 4 states have internal predecessors, (824), 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) [2023-08-03 18:39:09,535 INFO L175 Difference]: Start difference. First operand has 69 places, 47 transitions, 205 flow. Second operand 3 states and 370 transitions. [2023-08-03 18:39:09,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 79 transitions, 487 flow [2023-08-03 18:39:09,544 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 79 transitions, 477 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:39:09,544 INFO L231 Difference]: Finished difference. Result has 69 places, 53 transitions, 247 flow [2023-08-03 18:39:09,545 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=247, PETRI_PLACES=69, PETRI_TRANSITIONS=53} [2023-08-03 18:39:09,545 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 17 predicate places. [2023-08-03 18:39:09,545 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 53 transitions, 247 flow [2023-08-03 18:39:09,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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) [2023-08-03 18:39:09,545 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:39:09,545 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:39:09,549 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-08-03 18:39:09,749 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,SelfDestructingSolverStorable12 [2023-08-03 18:39:09,749 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:39:09,749 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:39:09,749 INFO L85 PathProgramCache]: Analyzing trace with hash -643350633, now seen corresponding path program 1 times [2023-08-03 18:39:09,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:39:09,750 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [323517265] [2023-08-03 18:39:09,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:09,750 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:39:09,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:09,851 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:39:09,852 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:39:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [323517265] [2023-08-03 18:39:09,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [323517265] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:39:09,852 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [114181614] [2023-08-03 18:39:09,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:09,852 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:39:09,852 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:39:09,853 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) [2023-08-03 18:39:09,855 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:39:09,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:39:09,928 INFO L262 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 18:39:09,929 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:39:09,961 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:39:09,961 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:39:10,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2023-08-03 18:39:10,035 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [114181614] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:39:10,035 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:39:10,035 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [2, 3, 3] total 6 [2023-08-03 18:39:10,036 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [429112153] [2023-08-03 18:39:10,036 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:39:10,036 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-08-03 18:39:10,037 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:39:10,038 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-08-03 18:39:10,038 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-08-03 18:39:10,060 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 206 [2023-08-03 18:39:10,061 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 53 transitions, 247 flow. Second operand has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 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) [2023-08-03 18:39:10,061 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:39:10,061 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 206 [2023-08-03 18:39:10,061 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:39:13,322 INFO L124 PetriNetUnfolderBase]: 44832/57846 cut-off events. [2023-08-03 18:39:13,322 INFO L125 PetriNetUnfolderBase]: For 51487/51487 co-relation queries the response was YES. [2023-08-03 18:39:13,464 INFO L83 FinitePrefix]: Finished finitePrefix Result has 178373 conditions, 57846 events. 44832/57846 cut-off events. For 51487/51487 co-relation queries the response was YES. Maximal size of possible extension queue 2012. Compared 305020 event pairs, 1171 based on Foata normal form. 2542/60320 useless extension candidates. Maximal degree in co-relation 82821. Up to 21204 conditions per place. [2023-08-03 18:39:13,635 INFO L140 encePairwiseOnDemand]: 189/206 looper letters, 186 selfloop transitions, 95 changer transitions 0/284 dead transitions. [2023-08-03 18:39:13,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 81 places, 284 transitions, 1827 flow [2023-08-03 18:39:13,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-08-03 18:39:13,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2023-08-03 18:39:13,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 1480 transitions. [2023-08-03 18:39:13,638 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5526512322628827 [2023-08-03 18:39:13,638 INFO L72 ComplementDD]: Start complementDD. Operand 13 states and 1480 transitions. [2023-08-03 18:39:13,638 INFO L73 IsDeterministic]: Start isDeterministic. Operand 13 states and 1480 transitions. [2023-08-03 18:39:13,638 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:39:13,639 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 13 states and 1480 transitions. [2023-08-03 18:39:13,640 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 14 states, 13 states have (on average 113.84615384615384) internal successors, (1480), 13 states have internal predecessors, (1480), 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) [2023-08-03 18:39:13,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 14 states, 14 states have (on average 206.0) internal successors, (2884), 14 states have internal predecessors, (2884), 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) [2023-08-03 18:39:13,643 INFO L81 ComplementDD]: Finished complementDD. Result has 14 states, 14 states have (on average 206.0) internal successors, (2884), 14 states have internal predecessors, (2884), 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) [2023-08-03 18:39:13,643 INFO L175 Difference]: Start difference. First operand has 69 places, 53 transitions, 247 flow. Second operand 13 states and 1480 transitions. [2023-08-03 18:39:13,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 81 places, 284 transitions, 1827 flow [2023-08-03 18:39:13,665 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 284 transitions, 1810 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:39:13,667 INFO L231 Difference]: Finished difference. Result has 88 places, 149 transitions, 1015 flow [2023-08-03 18:39:13,667 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=206, PETRI_DIFFERENCE_MINUEND_FLOW=240, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=21, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=1015, PETRI_PLACES=88, PETRI_TRANSITIONS=149} [2023-08-03 18:39:13,668 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 36 predicate places. [2023-08-03 18:39:13,668 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 149 transitions, 1015 flow [2023-08-03 18:39:13,668 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 102.57142857142857) internal successors, (718), 7 states have internal predecessors, (718), 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) [2023-08-03 18:39:13,668 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:39:13,668 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:39:13,674 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2023-08-03 18:39:13,872 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,SelfDestructingSolverStorable13 [2023-08-03 18:39:13,872 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:39:13,872 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:39:13,873 INFO L85 PathProgramCache]: Analyzing trace with hash -695463708, now seen corresponding path program 1 times [2023-08-03 18:39:13,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:39:13,873 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97403102] [2023-08-03 18:39:13,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:39:13,873 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:39:13,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:39:13,902 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:39:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:39:13,920 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:39:13,920 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 18:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-03 18:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:39:13,921 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:39:13,921 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-08-03 18:39:13,921 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:39:13,924 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 18:39:13,924 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 18:39:13,972 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 06:39:13 BasicIcfg [2023-08-03 18:39:13,972 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 18:39:13,972 INFO L158 Benchmark]: Toolchain (without parser) took 47634.32ms. Allocated memory was 484.4MB in the beginning and 14.9GB in the end (delta: 14.4GB). Free memory was 444.1MB in the beginning and 10.6GB in the end (delta: -10.1GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-08-03 18:39:13,972 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory is still 295.1MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:39:13,972 INFO L158 Benchmark]: CACSL2BoogieTranslator took 280.95ms. Allocated memory is still 484.4MB. Free memory was 444.1MB in the beginning and 423.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 18:39:13,978 INFO L158 Benchmark]: Boogie Procedure Inliner took 27.20ms. Allocated memory is still 484.4MB. Free memory was 423.4MB in the beginning and 421.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 18:39:13,979 INFO L158 Benchmark]: Boogie Preprocessor took 18.52ms. Allocated memory is still 484.4MB. Free memory was 421.3MB in the beginning and 419.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 18:39:13,979 INFO L158 Benchmark]: RCFGBuilder took 294.70ms. Allocated memory is still 484.4MB. Free memory was 419.8MB in the beginning and 405.0MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. [2023-08-03 18:39:13,979 INFO L158 Benchmark]: TraceAbstraction took 47009.13ms. Allocated memory was 484.4MB in the beginning and 14.9GB in the end (delta: 14.4GB). Free memory was 404.5MB in the beginning and 10.6GB in the end (delta: -10.2GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. [2023-08-03 18:39:13,980 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 343.9MB. Free memory is still 295.1MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 280.95ms. Allocated memory is still 484.4MB. Free memory was 444.1MB in the beginning and 423.4MB in the end (delta: 20.7MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 27.20ms. Allocated memory is still 484.4MB. Free memory was 423.4MB in the beginning and 421.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 18.52ms. Allocated memory is still 484.4MB. Free memory was 421.3MB in the beginning and 419.8MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 294.70ms. Allocated memory is still 484.4MB. Free memory was 419.8MB in the beginning and 405.0MB in the end (delta: 14.9MB). Peak memory consumption was 14.7MB. Max. memory is 16.0GB. * TraceAbstraction took 47009.13ms. Allocated memory was 484.4MB in the beginning and 14.9GB in the end (delta: 14.4GB). Free memory was 404.5MB in the beginning and 10.6GB in the end (delta: -10.2GB). Peak memory consumption was 4.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.6s, 95 PlacesBefore, 32 PlacesAfterwards, 92 TransitionsBefore, 26 TransitionsAfterwards, 1586 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 76 TotalNumberOfCompositions, 2724 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1895, independent: 1826, independent conditional: 0, independent unconditional: 1826, dependent: 69, dependent conditional: 0, dependent unconditional: 69, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 871, independent: 847, independent conditional: 0, independent unconditional: 847, dependent: 24, dependent conditional: 0, dependent unconditional: 24, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1895, independent: 979, independent conditional: 0, independent unconditional: 979, dependent: 45, dependent conditional: 0, dependent unconditional: 45, unknown: 871, unknown conditional: 0, unknown unconditional: 871] , Statistics on independence cache: Total cache size (in pairs): 83, Positive cache size: 75, Positive conditional cache size: 0, Positive unconditional cache size: 75, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.4s, 121 PlacesBefore, 52 PlacesAfterwards, 112 TransitionsBefore, 40 TransitionsAfterwards, 3852 CoEnabledTransitionPairs, 5 FixpointIterations, 17 TrivialSequentialCompositions, 49 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 13 ConcurrentYvCompositions, 3 ChoiceCompositions, 82 TotalNumberOfCompositions, 7347 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3722, independent: 3598, independent conditional: 0, independent unconditional: 3598, dependent: 124, dependent conditional: 0, dependent unconditional: 124, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1909, independent: 1863, independent conditional: 0, independent unconditional: 1863, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3722, independent: 1735, independent conditional: 0, independent unconditional: 1735, dependent: 78, dependent conditional: 0, dependent unconditional: 78, unknown: 1909, unknown conditional: 0, unknown unconditional: 1909] , Statistics on independence cache: Total cache size (in pairs): 141, Positive cache size: 125, Positive conditional cache size: 0, Positive unconditional cache size: 125, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L775] 0 pthread_t t2263[2]; [L776] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L776] FCALL, FORK 0 pthread_create(&t2263[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2263[asdf], ((void *)0), P0, ((void *)0))=-5, t2263={5:0}, x=0, y=0] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, x=0, y=0] [L776] COND TRUE 0 asdf<2 [L723] 1 y = 2 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L728] 1 __unbuffered_p0_EAX = x VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=0, y=2] [L776] FCALL, FORK 0 pthread_create(&t2263[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2263[asdf], ((void *)0), P0, ((void *)0))=-4, t2263={5:0}, x=0, y=2] [L776] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, x=0, y=2] [L776] COND FALSE 0 !(asdf<2) [L777] 0 pthread_t t2264[2]; [L778] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, x=0, y=2] [L778] COND TRUE 0 asdf<2 [L778] FCALL, FORK 0 pthread_create(&t2264[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2264[asdf], ((void *)0), P1, ((void *)0))=-3, t2263={5:0}, t2264={6:0}, x=0, y=2] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, x=0, y=2] [L778] COND TRUE 0 asdf<2 [L740] 3 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L778] FCALL, FORK 0 pthread_create(&t2264[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2264[asdf], ((void *)0), P1, ((void *)0))=-2, t2263={5:0}, t2264={6:0}, x=1, y=2] [L778] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, x=1, y=2] [L740] 4 x = 1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, x=1, y=2] [L778] COND FALSE 0 !(asdf<2) [L779] 0 pthread_t t2265[2]; [L780] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, t2265={3:0}, x=1, y=2] [L780] COND TRUE 0 asdf<2 [L780] FCALL, FORK 0 pthread_create(&t2265[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2265[asdf], ((void *)0), P2, ((void *)0))=-1, t2263={5:0}, t2264={6:0}, t2265={3:0}, x=1, y=2] [L780] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, t2265={3:0}, x=1, y=2] [L780] COND TRUE 0 asdf<2 [L780] FCALL, FORK 0 pthread_create(&t2265[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2265[asdf], ((void *)0), P2, ((void *)0))=0, t2263={5:0}, t2264={6:0}, t2265={3:0}, x=1, y=2] [L780] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, asdf=2, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2263={5:0}, t2264={6:0}, t2265={3:0}, x=1, y=2] [L733] 1 __unbuffered_cnt = __unbuffered_cnt + 1 [L735] 1 return 0; [L745] 3 __unbuffered_cnt = __unbuffered_cnt + 1 [L747] 3 return 0; [L745] 4 __unbuffered_cnt = __unbuffered_cnt + 1 [L747] 4 return 0; [L780] COND FALSE 0 !(asdf<2) [L782] 0 main$tmp_guard0 = __unbuffered_cnt == 3 [L784] CALL 0 assume_abort_if_not(main$tmp_guard0) [L3] COND FALSE 0 !(!cond) [L784] RET 0 assume_abort_if_not(main$tmp_guard0) [L752] 5 __unbuffered_p2_EAX = x VAL [\result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=2] [L788] 0 main$tmp_guard1 = !(y == 2 && __unbuffered_p0_EAX == 0 && __unbuffered_p2_EAX == 1) [L790] CALL 0 __VERIFIER_assert(main$tmp_guard1) [L18] COND TRUE 0 !expression [L18] 0 reach_error() VAL [\old(expression)=0, \result={0:0}, \result={0:0}, __unbuffered_cnt=3, __unbuffered_p0_EAX=0, __unbuffered_p2_EAX=1, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=1, main$tmp_guard1=0, x=1, y=2] - UnprovableResult [Line: 776]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 780]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - UnprovableResult [Line: 778]: Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 120 locations, 4 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: 2.2s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 16 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 46 IncrementalHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 46 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=73occurred in iteration=1, InterpolantAutomatonStates: 3, 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: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 10 procedures, 140 locations, 4 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: 44.7s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 39.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.5s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 630 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 491 mSDsluCounter, 120 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 66 mSDsCounter, 79 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1127 IncrementalHoareTripleChecker+Invalid, 1206 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 79 mSolverCounterUnsat, 54 mSDtfsCounter, 1127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 320 GetRequests, 272 SyntacticMatches, 7 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1015occurred in iteration=12, InterpolantAutomatonStates: 55, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 472 NumberOfCodeBlocks, 472 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 504 ConstructedInterpolants, 0 QuantifiedInterpolants, 1813 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1484 ConjunctsInSsa, 38 ConjunctsInUnsatCore, 25 InterpolantComputations, 8 PerfectInterpolantSequences, 245/280 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 18:39:14,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...