/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 00:37:07,298 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 00:37:07,379 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 00:37:07,389 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 00:37:07,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 00:37:07,390 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 00:37:07,391 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 00:37:07,418 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 00:37:07,419 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 00:37:07,422 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 00:37:07,423 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 00:37:07,423 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 00:37:07,424 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 00:37:07,425 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 00:37:07,425 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 00:37:07,425 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 00:37:07,425 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 00:37:07,426 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 00:37:07,426 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 00:37:07,426 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 00:37:07,426 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 00:37:07,427 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 00:37:07,427 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 00:37:07,427 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 00:37:07,429 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 00:37:07,429 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 00:37:07,429 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 00:37:07,430 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 00:37:07,430 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 00:37:07,430 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 00:37:07,431 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:37:07,431 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 00:37:07,431 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 00:37:07,431 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 00:37:07,431 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 00:37:07,432 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 00:37:07,433 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 00:37:07,632 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 00:37:07,656 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 00:37:07,658 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 00:37:07,659 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 00:37:07,660 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 00:37:07,661 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.oepc_bound2.i [2023-08-04 00:37:08,897 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 00:37:09,182 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 00:37:09,183 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe016_rmo.oepc_bound2.i [2023-08-04 00:37:09,202 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0f66c19/a599698356c74c9380e316f3fa1fefdc/FLAGd47e923b8 [2023-08-04 00:37:09,214 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cc0f66c19/a599698356c74c9380e316f3fa1fefdc [2023-08-04 00:37:09,216 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 00:37:09,217 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 00:37:09,218 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 00:37:09,218 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 00:37:09,222 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 00:37:09,222 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,223 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77393a71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09, skipping insertion in model container [2023-08-04 00:37:09,223 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,260 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 00:37:09,384 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_safe016_rmo.oepc_bound2.i[993,1006] [2023-08-04 00:37:09,626 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:37:09,636 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 00:37:09,646 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_safe016_rmo.oepc_bound2.i[993,1006] [2023-08-04 00:37:09,658 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:37:09,660 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 00:37:09,701 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 00:37:09,731 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:37:09,731 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 00:37:09,737 INFO L206 MainTranslator]: Completed translation [2023-08-04 00:37:09,737 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09 WrapperNode [2023-08-04 00:37:09,738 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 00:37:09,739 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 00:37:09,739 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 00:37:09,739 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 00:37:09,745 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,769 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,800 INFO L138 Inliner]: procedures = 177, calls = 85, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 220 [2023-08-04 00:37:09,801 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 00:37:09,801 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 00:37:09,801 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 00:37:09,802 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 00:37:09,809 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,809 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,813 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,814 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,824 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,828 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,830 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,832 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,836 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 00:37:09,837 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 00:37:09,837 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 00:37:09,837 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 00:37:09,838 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (1/1) ... [2023-08-04 00:37:09,843 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 00:37:09,855 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:37:09,870 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) [2023-08-04 00:37:09,877 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 [2023-08-04 00:37:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 00:37:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 00:37:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 00:37:09,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 00:37:09,909 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 00:37:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 00:37:09,910 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 00:37:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 00:37:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 00:37:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 00:37:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 00:37:09,911 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 00:37:09,911 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 00:37:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 00:37:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 00:37:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 00:37:09,912 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 00:37:09,912 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 00:37:09,914 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 00:37:10,042 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 00:37:10,043 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 00:37:10,440 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 00:37:10,675 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 00:37:10,675 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 00:37:10,680 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:37:10 BoogieIcfgContainer [2023-08-04 00:37:10,680 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 00:37:10,683 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 00:37:10,683 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 00:37:10,688 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 00:37:10,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 12:37:09" (1/3) ... [2023-08-04 00:37:10,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbcdd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:37:10, skipping insertion in model container [2023-08-04 00:37:10,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 12:37:09" (2/3) ... [2023-08-04 00:37:10,690 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5dbcdd9f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 12:37:10, skipping insertion in model container [2023-08-04 00:37:10,690 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 12:37:10" (3/3) ... [2023-08-04 00:37:10,691 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe016_rmo.oepc_bound2.i [2023-08-04 00:37:10,700 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 00:37:10,709 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 00:37:10,710 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 00:37:10,710 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 00:37:10,785 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:37:10,828 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 170 transitions, 360 flow [2023-08-04 00:37:11,076 INFO L124 PetriNetUnfolderBase]: 62/928 cut-off events. [2023-08-04 00:37:11,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:37:11,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 978 conditions, 928 events. 62/928 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 5553 event pairs, 0 based on Foata normal form. 0/820 useless extension candidates. Maximal degree in co-relation 565. Up to 32 conditions per place. [2023-08-04 00:37:11,087 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 170 transitions, 360 flow [2023-08-04 00:37:11,094 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 145 places, 139 transitions, 298 flow [2023-08-04 00:37:11,097 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:37:11,116 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 145 places, 139 transitions, 298 flow [2023-08-04 00:37:11,118 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 145 places, 139 transitions, 298 flow [2023-08-04 00:37:11,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 145 places, 139 transitions, 298 flow [2023-08-04 00:37:11,168 INFO L124 PetriNetUnfolderBase]: 14/432 cut-off events. [2023-08-04 00:37:11,168 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:37:11,171 INFO L83 FinitePrefix]: Finished finitePrefix Result has 482 conditions, 432 events. 14/432 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1833 event pairs, 0 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 317. Up to 16 conditions per place. [2023-08-04 00:37:11,176 INFO L119 LiptonReduction]: Number of co-enabled transitions 1960 [2023-08-04 00:37:16,159 INFO L134 LiptonReduction]: Checked pairs total: 4827 [2023-08-04 00:37:16,159 INFO L136 LiptonReduction]: Total number of compositions: 114 [2023-08-04 00:37:16,170 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:37:16,175 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;@34d2eade, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:37:16,175 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 00:37:16,180 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:37:16,180 INFO L124 PetriNetUnfolderBase]: 0/28 cut-off events. [2023-08-04 00:37:16,180 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 00:37:16,180 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:37:16,181 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 00:37:16,181 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:37:16,184 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:37:16,185 INFO L85 PathProgramCache]: Analyzing trace with hash 494143975, now seen corresponding path program 1 times [2023-08-04 00:37:16,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:37:16,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229234645] [2023-08-04 00:37:16,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:37:16,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:37:16,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:37:16,286 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 00:37:16,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 00:37:16,330 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 00:37:16,331 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 00:37:16,332 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 00:37:16,333 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 00:37:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 00:37:16,334 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 00:37:16,334 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 00:37:16,334 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 00:37:16,336 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 00:37:16,337 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 00:37:16,337 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 00:37:16,380 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 00:37:16,383 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 209 places, 198 transitions, 444 flow [2023-08-04 00:37:17,041 INFO L124 PetriNetUnfolderBase]: 282/4218 cut-off events. [2023-08-04 00:37:17,041 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 00:37:17,059 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4507 conditions, 4218 events. 282/4218 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 40327 event pairs, 0 based on Foata normal form. 0/3735 useless extension candidates. Maximal degree in co-relation 3067. Up to 162 conditions per place. [2023-08-04 00:37:17,060 INFO L82 GeneralOperation]: Start removeDead. Operand has 209 places, 198 transitions, 444 flow [2023-08-04 00:37:17,064 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 181 places, 167 transitions, 382 flow [2023-08-04 00:37:17,064 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 00:37:17,065 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 181 places, 167 transitions, 382 flow [2023-08-04 00:37:17,065 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 181 places, 167 transitions, 382 flow [2023-08-04 00:37:17,065 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 167 transitions, 382 flow [2023-08-04 00:37:17,268 INFO L124 PetriNetUnfolderBase]: 39/1707 cut-off events. [2023-08-04 00:37:17,268 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 00:37:17,275 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1996 conditions, 1707 events. 39/1707 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 44. Compared 12980 event pairs, 0 based on Foata normal form. 0/1629 useless extension candidates. Maximal degree in co-relation 1393. Up to 81 conditions per place. [2023-08-04 00:37:17,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 5260 [2023-08-04 00:37:22,708 INFO L134 LiptonReduction]: Checked pairs total: 15418 [2023-08-04 00:37:22,709 INFO L136 LiptonReduction]: Total number of compositions: 122 [2023-08-04 00:37:22,711 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 00:37:22,712 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;@34d2eade, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 00:37:22,712 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 00:37:22,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 00:37:22,721 INFO L124 PetriNetUnfolderBase]: 0/84 cut-off events. [2023-08-04 00:37:22,721 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 00:37:22,722 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:37:22,722 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 00:37:22,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:37:22,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:37:22,723 INFO L85 PathProgramCache]: Analyzing trace with hash -253877344, now seen corresponding path program 1 times [2023-08-04 00:37:22,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:37:22,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806801809] [2023-08-04 00:37:22,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:37:22,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:37:22,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:37:22,911 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:37:22,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:37:22,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806801809] [2023-08-04 00:37:22,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806801809] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:37:22,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [194707709] [2023-08-04 00:37:22,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:37:22,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:37:22,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:37:22,916 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) [2023-08-04 00:37:22,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 00:37:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:37:23,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:37:23,063 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:37:23,109 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 00:37:23,109 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:37:23,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [194707709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:37:23,110 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:37:23,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:37:23,111 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130895478] [2023-08-04 00:37:23,112 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:37:23,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:37:23,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:37:23,147 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:37:23,148 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:37:23,171 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:37:23,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 51 transitions, 150 flow. Second operand has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 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) [2023-08-04 00:37:23,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:37:23,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:37:23,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:38:52,944 INFO L124 PetriNetUnfolderBase]: 673616/854405 cut-off events. [2023-08-04 00:38:52,945 INFO L125 PetriNetUnfolderBase]: For 49247/49247 co-relation queries the response was YES. [2023-08-04 00:38:55,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1741193 conditions, 854405 events. 673616/854405 cut-off events. For 49247/49247 co-relation queries the response was YES. Maximal size of possible extension queue 18477. Compared 5758615 event pairs, 505076 based on Foata normal form. 0/840608 useless extension candidates. Maximal degree in co-relation 484432. Up to 830096 conditions per place. [2023-08-04 00:38:59,324 INFO L140 encePairwiseOnDemand]: 316/320 looper letters, 44 selfloop transitions, 5 changer transitions 0/60 dead transitions. [2023-08-04 00:38:59,324 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 60 transitions, 262 flow [2023-08-04 00:38:59,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:38:59,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:38:59,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 900 transitions. [2023-08-04 00:38:59,356 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5625 [2023-08-04 00:38:59,362 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 900 transitions. [2023-08-04 00:38:59,363 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 900 transitions. [2023-08-04 00:38:59,367 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:38:59,369 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 900 transitions. [2023-08-04 00:38:59,374 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 180.0) internal successors, (900), 5 states have internal predecessors, (900), 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) [2023-08-04 00:38:59,380 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:38:59,381 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:38:59,383 INFO L175 Difference]: Start difference. First operand has 68 places, 51 transitions, 150 flow. Second operand 5 states and 900 transitions. [2023-08-04 00:38:59,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 60 transitions, 262 flow [2023-08-04 00:38:59,440 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 60 transitions, 255 flow, removed 3 selfloop flow, removed 1 redundant places. [2023-08-04 00:38:59,445 INFO L231 Difference]: Finished difference. Result has 71 places, 53 transitions, 160 flow [2023-08-04 00:38:59,446 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=71, PETRI_TRANSITIONS=53} [2023-08-04 00:38:59,450 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 3 predicate places. [2023-08-04 00:38:59,450 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 53 transitions, 160 flow [2023-08-04 00:38:59,450 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 171.6) internal successors, (858), 5 states have internal predecessors, (858), 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) [2023-08-04 00:38:59,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:38:59,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:38:59,457 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 00:38:59,656 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:38:59,656 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:38:59,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:38:59,657 INFO L85 PathProgramCache]: Analyzing trace with hash -1084272164, now seen corresponding path program 1 times [2023-08-04 00:38:59,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:38:59,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [41597592] [2023-08-04 00:38:59,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:38:59,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:38:59,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:38:59,739 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:38:59,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:38:59,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [41597592] [2023-08-04 00:38:59,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [41597592] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:38:59,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 00:38:59,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 00:38:59,740 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2045759146] [2023-08-04 00:38:59,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:38:59,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:38:59,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:38:59,742 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:38:59,743 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 00:38:59,755 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 320 [2023-08-04 00:38:59,756 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 53 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-04 00:38:59,756 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:38:59,756 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 320 [2023-08-04 00:38:59,756 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:40:21,338 INFO L124 PetriNetUnfolderBase]: 634764/801652 cut-off events. [2023-08-04 00:40:21,339 INFO L125 PetriNetUnfolderBase]: For 43440/43440 co-relation queries the response was YES. [2023-08-04 00:40:24,039 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1631172 conditions, 801652 events. 634764/801652 cut-off events. For 43440/43440 co-relation queries the response was YES. Maximal size of possible extension queue 17929. Compared 5272297 event pairs, 538452 based on Foata normal form. 1/788921 useless extension candidates. Maximal degree in co-relation 479508. Up to 779233 conditions per place. [2023-08-04 00:40:27,042 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 42 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-04 00:40:27,042 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 55 transitions, 251 flow [2023-08-04 00:40:27,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:40:27,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:40:27,044 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 557 transitions. [2023-08-04 00:40:27,044 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5802083333333333 [2023-08-04 00:40:27,045 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 557 transitions. [2023-08-04 00:40:27,045 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 557 transitions. [2023-08-04 00:40:27,045 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:40:27,045 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 557 transitions. [2023-08-04 00:40:27,047 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 185.66666666666666) internal successors, (557), 3 states have internal predecessors, (557), 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) [2023-08-04 00:40:27,048 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:40:27,049 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:40:27,049 INFO L175 Difference]: Start difference. First operand has 71 places, 53 transitions, 160 flow. Second operand 3 states and 557 transitions. [2023-08-04 00:40:27,049 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 55 transitions, 251 flow [2023-08-04 00:40:27,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 55 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:40:27,052 INFO L231 Difference]: Finished difference. Result has 72 places, 52 transitions, 158 flow [2023-08-04 00:40:27,053 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=158, PETRI_PLACES=72, PETRI_TRANSITIONS=52} [2023-08-04 00:40:27,053 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 4 predicate places. [2023-08-04 00:40:27,053 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 52 transitions, 158 flow [2023-08-04 00:40:27,054 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 173.33333333333334) internal successors, (520), 3 states have internal predecessors, (520), 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) [2023-08-04 00:40:27,054 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:40:27,054 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:40:27,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 00:40:27,054 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:40:27,055 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:40:27,055 INFO L85 PathProgramCache]: Analyzing trace with hash -2081421137, now seen corresponding path program 1 times [2023-08-04 00:40:27,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:40:27,055 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [417796217] [2023-08-04 00:40:27,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:40:27,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:40:27,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:40:27,105 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 00:40:27,105 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:40:27,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [417796217] [2023-08-04 00:40:27,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [417796217] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:40:27,106 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1413565686] [2023-08-04 00:40:27,106 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:40:27,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:40:27,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:40:27,113 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) [2023-08-04 00:40:27,117 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 00:40:27,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:40:27,233 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:40:27,235 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:40:27,242 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:40:27,243 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:40:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1413565686] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:40:27,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:40:27,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 00:40:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461998193] [2023-08-04 00:40:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:40:27,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:40:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:40:27,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:40:27,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:40:27,255 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 320 [2023-08-04 00:40:27,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 52 transitions, 158 flow. Second operand has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2023-08-04 00:40:27,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:40:27,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 320 [2023-08-04 00:40:27,256 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:41:43,981 INFO L124 PetriNetUnfolderBase]: 597938/760592 cut-off events. [2023-08-04 00:41:43,982 INFO L125 PetriNetUnfolderBase]: For 39328/39328 co-relation queries the response was YES. [2023-08-04 00:41:46,848 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1539958 conditions, 760592 events. 597938/760592 cut-off events. For 39328/39328 co-relation queries the response was YES. Maximal size of possible extension queue 17823. Compared 5089969 event pairs, 508996 based on Foata normal form. 0/752204 useless extension candidates. Maximal degree in co-relation 1539918. Up to 731206 conditions per place. [2023-08-04 00:41:49,512 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 46 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-04 00:41:49,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 60 transitions, 272 flow [2023-08-04 00:41:49,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:41:49,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:41:49,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 561 transitions. [2023-08-04 00:41:49,514 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.584375 [2023-08-04 00:41:49,514 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 561 transitions. [2023-08-04 00:41:49,514 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 561 transitions. [2023-08-04 00:41:49,515 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:41:49,515 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 561 transitions. [2023-08-04 00:41:49,516 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 187.0) internal successors, (561), 3 states have internal predecessors, (561), 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) [2023-08-04 00:41:49,518 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:41:49,518 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:41:49,519 INFO L175 Difference]: Start difference. First operand has 72 places, 52 transitions, 158 flow. Second operand 3 states and 561 transitions. [2023-08-04 00:41:49,519 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 60 transitions, 272 flow [2023-08-04 00:41:49,520 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 60 transitions, 268 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 00:41:49,521 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 169 flow [2023-08-04 00:41:49,521 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=169, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-08-04 00:41:49,522 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 5 predicate places. [2023-08-04 00:41:49,522 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 169 flow [2023-08-04 00:41:49,522 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 174.33333333333334) internal successors, (523), 3 states have internal predecessors, (523), 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) [2023-08-04 00:41:49,522 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:41:49,522 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:41:49,531 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 00:41:49,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 00:41:49,728 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:41:49,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:41:49,728 INFO L85 PathProgramCache]: Analyzing trace with hash -829861956, now seen corresponding path program 1 times [2023-08-04 00:41:49,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:41:49,729 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [574962134] [2023-08-04 00:41:49,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:41:49,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:41:49,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:41:49,787 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:41:49,787 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:41:49,787 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [574962134] [2023-08-04 00:41:49,787 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [574962134] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:41:49,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [372595140] [2023-08-04 00:41:49,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:41:49,788 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:41:49,788 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:41:49,789 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) [2023-08-04 00:41:49,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 00:41:49,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:41:49,909 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:41:49,910 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:41:49,930 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:41:49,930 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:41:49,945 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 00:41:49,946 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [372595140] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:41:49,946 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:41:49,946 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 00:41:49,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146617184] [2023-08-04 00:41:49,946 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:41:49,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:41:49,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:41:49,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:41:49,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:41:49,961 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:41:49,962 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 169 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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) [2023-08-04 00:41:49,962 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:41:49,962 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:41:49,962 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:42:50,926 INFO L124 PetriNetUnfolderBase]: 465130/587423 cut-off events. [2023-08-04 00:42:50,926 INFO L125 PetriNetUnfolderBase]: For 29532/29532 co-relation queries the response was YES. [2023-08-04 00:42:53,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188891 conditions, 587423 events. 465130/587423 cut-off events. For 29532/29532 co-relation queries the response was YES. Maximal size of possible extension queue 14297. Compared 3769869 event pairs, 331740 based on Foata normal form. 3/581324 useless extension candidates. Maximal degree in co-relation 418507. Up to 565156 conditions per place. [2023-08-04 00:42:55,512 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 45 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-04 00:42:55,513 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 59 transitions, 273 flow [2023-08-04 00:42:55,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:42:55,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:42:55,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 728 transitions. [2023-08-04 00:42:55,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.56875 [2023-08-04 00:42:55,519 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 728 transitions. [2023-08-04 00:42:55,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 728 transitions. [2023-08-04 00:42:55,519 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:42:55,519 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 728 transitions. [2023-08-04 00:42:55,521 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 182.0) internal successors, (728), 4 states have internal predecessors, (728), 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) [2023-08-04 00:42:55,523 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:42:55,524 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:42:55,524 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 169 flow. Second operand 4 states and 728 transitions. [2023-08-04 00:42:55,524 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 59 transitions, 273 flow [2023-08-04 00:42:55,533 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 59 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:42:55,535 INFO L231 Difference]: Finished difference. Result has 75 places, 52 transitions, 165 flow [2023-08-04 00:42:55,535 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=159, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=75, PETRI_TRANSITIONS=52} [2023-08-04 00:42:55,535 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 7 predicate places. [2023-08-04 00:42:55,536 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 52 transitions, 165 flow [2023-08-04 00:42:55,536 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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) [2023-08-04 00:42:55,536 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:42:55,536 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:42:55,544 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 00:42:55,741 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:42:55,741 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:42:55,742 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:42:55,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1072082536, now seen corresponding path program 1 times [2023-08-04 00:42:55,742 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:42:55,742 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2052536729] [2023-08-04 00:42:55,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:42:55,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:42:55,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:42:55,848 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:42:55,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:42:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2052536729] [2023-08-04 00:42:55,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2052536729] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:42:55,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [878775454] [2023-08-04 00:42:55,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:42:55,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:42:55,849 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:42:55,851 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) [2023-08-04 00:42:55,853 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 00:42:55,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:42:55,968 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:42:55,970 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:42:55,991 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 00:42:55,991 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:42:55,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [878775454] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:42:55,991 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:42:55,991 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 00:42:55,992 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430875399] [2023-08-04 00:42:55,992 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:42:55,992 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:42:55,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:42:55,994 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:42:55,994 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:42:56,008 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:42:56,009 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 52 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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) [2023-08-04 00:42:56,009 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:42:56,009 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:42:56,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:44:00,689 INFO L124 PetriNetUnfolderBase]: 464914/587185 cut-off events. [2023-08-04 00:44:00,689 INFO L125 PetriNetUnfolderBase]: For 29164/29164 co-relation queries the response was YES. [2023-08-04 00:44:03,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1188315 conditions, 587185 events. 464914/587185 cut-off events. For 29164/29164 co-relation queries the response was YES. Maximal size of possible extension queue 14297. Compared 3770530 event pairs, 215158 based on Foata normal form. 81/581326 useless extension candidates. Maximal degree in co-relation 418295. Up to 564327 conditions per place. [2023-08-04 00:44:05,390 INFO L140 encePairwiseOnDemand]: 316/320 looper letters, 57 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-04 00:44:05,390 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 71 transitions, 325 flow [2023-08-04 00:44:05,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:44:05,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:44:05,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 911 transitions. [2023-08-04 00:44:05,393 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.569375 [2023-08-04 00:44:05,393 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 911 transitions. [2023-08-04 00:44:05,393 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 911 transitions. [2023-08-04 00:44:05,394 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:44:05,394 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 911 transitions. [2023-08-04 00:44:05,396 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 182.2) internal successors, (911), 5 states have internal predecessors, (911), 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) [2023-08-04 00:44:05,398 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:44:05,399 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:44:05,399 INFO L175 Difference]: Start difference. First operand has 75 places, 52 transitions, 165 flow. Second operand 5 states and 911 transitions. [2023-08-04 00:44:05,399 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 71 transitions, 325 flow [2023-08-04 00:44:05,413 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 71 transitions, 318 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:44:05,415 INFO L231 Difference]: Finished difference. Result has 76 places, 52 transitions, 175 flow [2023-08-04 00:44:05,415 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=154, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=175, PETRI_PLACES=76, PETRI_TRANSITIONS=52} [2023-08-04 00:44:05,415 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 8 predicate places. [2023-08-04 00:44:05,416 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 52 transitions, 175 flow [2023-08-04 00:44:05,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 172.6) internal successors, (863), 5 states have internal predecessors, (863), 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) [2023-08-04 00:44:05,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:44:05,416 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:44:05,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-04 00:44:05,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:44:05,622 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:44:05,622 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:44:05,622 INFO L85 PathProgramCache]: Analyzing trace with hash 1255406852, now seen corresponding path program 1 times [2023-08-04 00:44:05,622 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:44:05,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433954035] [2023-08-04 00:44:05,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:44:05,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:44:05,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:44:05,725 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 00:44:05,725 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:44:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433954035] [2023-08-04 00:44:05,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433954035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:44:05,725 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288600206] [2023-08-04 00:44:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:44:05,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:44:05,726 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:44:05,727 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) [2023-08-04 00:44:05,733 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 00:44:05,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:44:05,853 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 00:44:05,854 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:44:05,868 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 00:44:05,868 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:44:05,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288600206] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:44:05,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:44:05,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2023-08-04 00:44:05,868 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139380467] [2023-08-04 00:44:05,868 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:44:05,868 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 00:44:05,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:44:05,869 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 00:44:05,869 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:44:05,877 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 320 [2023-08-04 00:44:05,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 76 places, 52 transitions, 175 flow. Second operand has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2023-08-04 00:44:05,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:44:05,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 320 [2023-08-04 00:44:05,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:45:08,676 INFO L124 PetriNetUnfolderBase]: 449632/560995 cut-off events. [2023-08-04 00:45:08,676 INFO L125 PetriNetUnfolderBase]: For 26947/26947 co-relation queries the response was YES. [2023-08-04 00:45:10,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1144284 conditions, 560995 events. 449632/560995 cut-off events. For 26947/26947 co-relation queries the response was YES. Maximal size of possible extension queue 13934. Compared 3479365 event pairs, 377056 based on Foata normal form. 0/557863 useless extension candidates. Maximal degree in co-relation 402635. Up to 542911 conditions per place. [2023-08-04 00:45:12,971 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-04 00:45:12,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 65 transitions, 311 flow [2023-08-04 00:45:12,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 00:45:12,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 00:45:12,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 566 transitions. [2023-08-04 00:45:12,973 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5895833333333333 [2023-08-04 00:45:12,973 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 566 transitions. [2023-08-04 00:45:12,973 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 566 transitions. [2023-08-04 00:45:12,973 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:45:12,973 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 566 transitions. [2023-08-04 00:45:12,975 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 188.66666666666666) internal successors, (566), 3 states have internal predecessors, (566), 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) [2023-08-04 00:45:12,976 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:45:12,976 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 320.0) internal successors, (1280), 4 states have internal predecessors, (1280), 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) [2023-08-04 00:45:12,977 INFO L175 Difference]: Start difference. First operand has 76 places, 52 transitions, 175 flow. Second operand 3 states and 566 transitions. [2023-08-04 00:45:12,977 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 65 transitions, 311 flow [2023-08-04 00:45:12,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 76 places, 65 transitions, 304 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-04 00:45:12,979 INFO L231 Difference]: Finished difference. Result has 77 places, 53 transitions, 183 flow [2023-08-04 00:45:12,979 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=77, PETRI_TRANSITIONS=53} [2023-08-04 00:45:12,980 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 9 predicate places. [2023-08-04 00:45:12,980 INFO L495 AbstractCegarLoop]: Abstraction has has 77 places, 53 transitions, 183 flow [2023-08-04 00:45:12,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 175.66666666666666) internal successors, (527), 3 states have internal predecessors, (527), 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) [2023-08-04 00:45:12,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:45:12,980 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:45:12,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 00:45:13,186 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:45:13,187 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:45:13,187 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:45:13,187 INFO L85 PathProgramCache]: Analyzing trace with hash -1267550793, now seen corresponding path program 1 times [2023-08-04 00:45:13,187 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:45:13,188 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139750227] [2023-08-04 00:45:13,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:45:13,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:45:13,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:45:13,273 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 00:45:13,273 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:45:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139750227] [2023-08-04 00:45:13,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139750227] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:45:13,273 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [338281756] [2023-08-04 00:45:13,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:45:13,274 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:45:13,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:45:13,275 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) [2023-08-04 00:45:13,281 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-04 00:45:13,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:45:13,413 INFO L262 TraceCheckSpWp]: Trace formula consists of 268 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:45:13,418 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:45:13,432 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 00:45:13,432 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:45:13,452 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-04 00:45:13,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [338281756] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:45:13,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:45:13,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:45:13,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [782919355] [2023-08-04 00:45:13,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:45:13,453 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:45:13,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:45:13,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:45:13,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:45:13,465 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:45:13,466 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 53 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:45:13,467 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:45:13,467 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:45:13,467 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:46:02,224 INFO L124 PetriNetUnfolderBase]: 349273/432232 cut-off events. [2023-08-04 00:46:02,225 INFO L125 PetriNetUnfolderBase]: For 23704/23704 co-relation queries the response was YES. [2023-08-04 00:46:04,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 885400 conditions, 432232 events. 349273/432232 cut-off events. For 23704/23704 co-relation queries the response was YES. Maximal size of possible extension queue 11470. Compared 2544539 event pairs, 253579 based on Foata normal form. 27/431206 useless extension candidates. Maximal degree in co-relation 311048. Up to 420496 conditions per place. [2023-08-04 00:46:05,917 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 54 selfloop transitions, 3 changer transitions 0/67 dead transitions. [2023-08-04 00:46:05,917 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 67 transitions, 320 flow [2023-08-04 00:46:05,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:46:05,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:46:05,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 736 transitions. [2023-08-04 00:46:05,919 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.575 [2023-08-04 00:46:05,919 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 736 transitions. [2023-08-04 00:46:05,920 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 736 transitions. [2023-08-04 00:46:05,920 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:46:05,920 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 736 transitions. [2023-08-04 00:46:05,921 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 184.0) internal successors, (736), 4 states have internal predecessors, (736), 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) [2023-08-04 00:46:05,923 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:46:05,923 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:46:05,924 INFO L175 Difference]: Start difference. First operand has 77 places, 53 transitions, 183 flow. Second operand 4 states and 736 transitions. [2023-08-04 00:46:05,924 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 67 transitions, 320 flow [2023-08-04 00:46:05,933 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 79 places, 67 transitions, 318 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 00:46:05,934 INFO L231 Difference]: Finished difference. Result has 79 places, 52 transitions, 178 flow [2023-08-04 00:46:05,934 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=172, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=79, PETRI_TRANSITIONS=52} [2023-08-04 00:46:05,935 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 11 predicate places. [2023-08-04 00:46:05,935 INFO L495 AbstractCegarLoop]: Abstraction has has 79 places, 52 transitions, 178 flow [2023-08-04 00:46:05,935 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:05,936 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:46:05,936 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:46:05,944 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2023-08-04 00:46:06,140 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:46:06,141 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:46:06,141 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:46:06,141 INFO L85 PathProgramCache]: Analyzing trace with hash -99601641, now seen corresponding path program 1 times [2023-08-04 00:46:06,141 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:46:06,141 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1275954988] [2023-08-04 00:46:06,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:46:06,142 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:46:06,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:46:06,223 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 00:46:06,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:46:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1275954988] [2023-08-04 00:46:06,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1275954988] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:46:06,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [799323177] [2023-08-04 00:46:06,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:46:06,224 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:46:06,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:46:06,226 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) [2023-08-04 00:46:06,233 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-04 00:46:06,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:46:06,363 INFO L262 TraceCheckSpWp]: Trace formula consists of 286 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:46:06,365 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:46:06,383 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 00:46:06,384 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:46:06,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [799323177] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:46:06,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:46:06,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 00:46:06,384 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2074592652] [2023-08-04 00:46:06,384 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:46:06,384 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:46:06,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:46:06,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:46:06,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 00:46:06,398 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:46:06,398 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 79 places, 52 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:06,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:46:06,399 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:46:06,399 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:46:50,136 INFO L124 PetriNetUnfolderBase]: 343873/426508 cut-off events. [2023-08-04 00:46:50,136 INFO L125 PetriNetUnfolderBase]: For 19252/19252 co-relation queries the response was YES. [2023-08-04 00:46:51,981 INFO L83 FinitePrefix]: Finished finitePrefix Result has 873502 conditions, 426508 events. 343873/426508 cut-off events. For 19252/19252 co-relation queries the response was YES. Maximal size of possible extension queue 11569. Compared 2542832 event pairs, 63748 based on Foata normal form. 1296/427723 useless extension candidates. Maximal degree in co-relation 306794. Up to 403083 conditions per place. [2023-08-04 00:46:53,508 INFO L140 encePairwiseOnDemand]: 316/320 looper letters, 73 selfloop transitions, 4 changer transitions 0/86 dead transitions. [2023-08-04 00:46:53,508 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 86 transitions, 400 flow [2023-08-04 00:46:53,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 00:46:53,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 00:46:53,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 926 transitions. [2023-08-04 00:46:53,510 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.57875 [2023-08-04 00:46:53,510 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 926 transitions. [2023-08-04 00:46:53,511 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 926 transitions. [2023-08-04 00:46:53,511 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:46:53,511 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 926 transitions. [2023-08-04 00:46:53,513 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 185.2) internal successors, (926), 5 states have internal predecessors, (926), 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) [2023-08-04 00:46:53,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:46:53,515 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 320.0) internal successors, (1920), 6 states have internal predecessors, (1920), 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) [2023-08-04 00:46:53,515 INFO L175 Difference]: Start difference. First operand has 79 places, 52 transitions, 178 flow. Second operand 5 states and 926 transitions. [2023-08-04 00:46:53,515 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 86 transitions, 400 flow [2023-08-04 00:46:53,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 78 places, 86 transitions, 393 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-04 00:46:53,561 INFO L231 Difference]: Finished difference. Result has 80 places, 52 transitions, 188 flow [2023-08-04 00:46:53,561 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=167, PETRI_DIFFERENCE_MINUEND_PLACES=74, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=188, PETRI_PLACES=80, PETRI_TRANSITIONS=52} [2023-08-04 00:46:53,562 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 12 predicate places. [2023-08-04 00:46:53,562 INFO L495 AbstractCegarLoop]: Abstraction has has 80 places, 52 transitions, 188 flow [2023-08-04 00:46:53,562 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 173.6) internal successors, (868), 5 states have internal predecessors, (868), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 00:46:53,562 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:46:53,562 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:46:53,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-04 00:46:53,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:46:53,767 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:46:53,768 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:46:53,768 INFO L85 PathProgramCache]: Analyzing trace with hash 1666496539, now seen corresponding path program 1 times [2023-08-04 00:46:53,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:46:53,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041284797] [2023-08-04 00:46:53,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:46:53,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:46:53,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:46:53,833 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 00:46:53,833 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:46:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041284797] [2023-08-04 00:46:53,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041284797] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:46:53,833 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753739252] [2023-08-04 00:46:53,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:46:53,833 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:46:53,834 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:46:53,835 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) [2023-08-04 00:46:53,838 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-04 00:46:53,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:46:53,984 INFO L262 TraceCheckSpWp]: Trace formula consists of 318 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 00:46:53,989 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:46:54,003 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 00:46:54,003 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 00:46:54,019 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2023-08-04 00:46:54,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753739252] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 00:46:54,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 00:46:54,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 00:46:54,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230794868] [2023-08-04 00:46:54,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 00:46:54,021 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 00:46:54,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:46:54,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 00:46:54,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:46:54,032 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 170 out of 320 [2023-08-04 00:46:54,033 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 52 transitions, 188 flow. Second operand has 5 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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) [2023-08-04 00:46:54,033 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:46:54,034 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 170 of 320 [2023-08-04 00:46:54,034 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 00:47:32,403 INFO L124 PetriNetUnfolderBase]: 285850/352933 cut-off events. [2023-08-04 00:47:32,404 INFO L125 PetriNetUnfolderBase]: For 23713/23713 co-relation queries the response was YES. [2023-08-04 00:47:34,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 727370 conditions, 352933 events. 285850/352933 cut-off events. For 23713/23713 co-relation queries the response was YES. Maximal size of possible extension queue 10840. Compared 2041168 event pairs, 196264 based on Foata normal form. 324/353176 useless extension candidates. Maximal degree in co-relation 255131. Up to 332635 conditions per place. [2023-08-04 00:47:35,442 INFO L140 encePairwiseOnDemand]: 317/320 looper letters, 65 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-04 00:47:35,443 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 77 transitions, 370 flow [2023-08-04 00:47:35,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:47:35,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 00:47:35,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 747 transitions. [2023-08-04 00:47:35,444 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.58359375 [2023-08-04 00:47:35,445 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 747 transitions. [2023-08-04 00:47:35,445 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 747 transitions. [2023-08-04 00:47:35,445 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 00:47:35,445 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 747 transitions. [2023-08-04 00:47:35,446 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 186.75) internal successors, (747), 4 states have internal predecessors, (747), 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) [2023-08-04 00:47:35,448 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:47:35,449 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 320.0) internal successors, (1600), 5 states have internal predecessors, (1600), 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) [2023-08-04 00:47:35,449 INFO L175 Difference]: Start difference. First operand has 80 places, 52 transitions, 188 flow. Second operand 4 states and 747 transitions. [2023-08-04 00:47:35,449 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 77 transitions, 370 flow [2023-08-04 00:47:35,460 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 77 transitions, 365 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-04 00:47:35,461 INFO L231 Difference]: Finished difference. Result has 81 places, 51 transitions, 181 flow [2023-08-04 00:47:35,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=320, PETRI_DIFFERENCE_MINUEND_FLOW=175, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=181, PETRI_PLACES=81, PETRI_TRANSITIONS=51} [2023-08-04 00:47:35,462 INFO L281 CegarLoopForPetriNet]: 68 programPoint places, 13 predicate places. [2023-08-04 00:47:35,462 INFO L495 AbstractCegarLoop]: Abstraction has has 81 places, 51 transitions, 181 flow [2023-08-04 00:47:35,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 174.4) internal successors, (872), 5 states have internal predecessors, (872), 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) [2023-08-04 00:47:35,463 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 00:47:35,463 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:47:35,476 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-04 00:47:35,676 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,SelfDestructingSolverStorable9 [2023-08-04 00:47:35,676 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 00:47:35,676 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 00:47:35,676 INFO L85 PathProgramCache]: Analyzing trace with hash -923460333, now seen corresponding path program 1 times [2023-08-04 00:47:35,677 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 00:47:35,677 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825985178] [2023-08-04 00:47:35,678 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:47:35,678 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 00:47:35,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:47:35,767 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 00:47:35,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 00:47:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825985178] [2023-08-04 00:47:35,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1825985178] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 00:47:35,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1103598997] [2023-08-04 00:47:35,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 00:47:35,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:47:35,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 00:47:35,769 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) [2023-08-04 00:47:35,789 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-04 00:47:35,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 00:47:35,930 INFO L262 TraceCheckSpWp]: Trace formula consists of 336 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 00:47:35,932 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 00:47:35,946 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-04 00:47:35,946 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 00:47:35,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1103598997] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 00:47:35,947 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 00:47:35,947 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 00:47:35,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714796400] [2023-08-04 00:47:35,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 00:47:35,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 00:47:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 00:47:35,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 00:47:35,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 00:47:35,959 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 171 out of 320 [2023-08-04 00:47:35,960 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 51 transitions, 181 flow. Second operand has 4 states, 4 states have (on average 176.0) internal successors, (704), 4 states have internal predecessors, (704), 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) [2023-08-04 00:47:35,960 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 00:47:35,960 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 171 of 320 [2023-08-04 00:47:35,960 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Received shutdown request... [2023-08-04 00:47:45,164 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 00:47:45,165 WARN L340 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Timeout while monitored process is still running, waiting 1000 ms for graceful end [2023-08-04 00:47:45,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 00:47:45,475 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 00:47:45,480 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-04 00:47:45,676 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 00:47:45,677 WARN L619 AbstractCegarLoop]: Verification canceled: while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/320 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 197877 conditions, 92156 events (73241/92155 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 6295. Compared 526427 event pairs, 13814 based on Foata normal form. 3664/101858 useless extension candidates. Maximal degree in co-relation 134410. Up to 44497 conditions per place.). [2023-08-04 00:47:45,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 00:47:45,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 00:47:45,677 INFO L805 garLoopResultBuilder]: Registering result TIMEOUT for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 00:47:45,678 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 00:47:45,679 INFO L307 ceAbstractionStarter]: Result for error location InUseError was TIMEOUT,TIMEOUT,TIMEOUT,TIMEOUT (1/2) [2023-08-04 00:47:45,680 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 00:47:45,680 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 00:47:45,683 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 12:47:45 BasicIcfg [2023-08-04 00:47:45,683 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 00:47:45,683 INFO L158 Benchmark]: Toolchain (without parser) took 636465.85ms. Allocated memory was 339.7MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 289.7MB in the beginning and 11.9GB in the end (delta: -11.6GB). Peak memory consumption was 4.7GB. Max. memory is 16.0GB. [2023-08-04 00:47:45,683 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 339.7MB. Free memory is still 291.2MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 00:47:45,683 INFO L158 Benchmark]: CACSL2BoogieTranslator took 520.11ms. Allocated memory is still 339.7MB. Free memory was 289.4MB in the beginning and 264.3MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. [2023-08-04 00:47:45,684 INFO L158 Benchmark]: Boogie Procedure Inliner took 61.79ms. Allocated memory is still 339.7MB. Free memory was 264.3MB in the beginning and 261.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 00:47:45,684 INFO L158 Benchmark]: Boogie Preprocessor took 34.89ms. Allocated memory is still 339.7MB. Free memory was 261.5MB in the beginning and 259.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 00:47:45,684 INFO L158 Benchmark]: RCFGBuilder took 843.30ms. Allocated memory was 339.7MB in the beginning and 457.2MB in the end (delta: 117.4MB). Free memory was 258.7MB in the beginning and 358.9MB in the end (delta: -100.2MB). Peak memory consumption was 20.0MB. Max. memory is 16.0GB. [2023-08-04 00:47:45,684 INFO L158 Benchmark]: TraceAbstraction took 635000.15ms. Allocated memory was 457.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 357.8MB in the beginning and 11.9GB in the end (delta: -11.5GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-04 00:47:45,686 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 339.7MB. Free memory is still 291.2MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 520.11ms. Allocated memory is still 339.7MB. Free memory was 289.4MB in the beginning and 264.3MB in the end (delta: 25.1MB). Peak memory consumption was 25.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 61.79ms. Allocated memory is still 339.7MB. Free memory was 264.3MB in the beginning and 261.5MB in the end (delta: 2.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 34.89ms. Allocated memory is still 339.7MB. Free memory was 261.5MB in the beginning and 259.0MB in the end (delta: 2.5MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 843.30ms. Allocated memory was 339.7MB in the beginning and 457.2MB in the end (delta: 117.4MB). Free memory was 258.7MB in the beginning and 358.9MB in the end (delta: -100.2MB). Peak memory consumption was 20.0MB. Max. memory is 16.0GB. * TraceAbstraction took 635000.15ms. Allocated memory was 457.2MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 357.8MB in the beginning and 11.9GB in the end (delta: -11.5GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] - GenericResultAtLocation [Line: 268]: Unsoundness Warning unspecified type, defaulting to int C: short [268] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.0s, 145 PlacesBefore, 40 PlacesAfterwards, 139 TransitionsBefore, 31 TransitionsAfterwards, 1960 CoEnabledTransitionPairs, 8 FixpointIterations, 58 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 3 ChoiceCompositions, 114 TotalNumberOfCompositions, 4827 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2178, independent: 1987, independent conditional: 0, independent unconditional: 1987, dependent: 191, dependent conditional: 0, dependent unconditional: 191, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1036, independent: 1007, independent conditional: 0, independent unconditional: 1007, dependent: 29, dependent conditional: 0, dependent unconditional: 29, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2178, independent: 980, independent conditional: 0, independent unconditional: 980, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 1036, unknown conditional: 0, unknown unconditional: 1036] , Statistics on independence cache: Total cache size (in pairs): 99, Positive cache size: 87, Positive conditional cache size: 0, Positive unconditional cache size: 87, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 5.6s, 181 PlacesBefore, 68 PlacesAfterwards, 167 TransitionsBefore, 51 TransitionsAfterwards, 5260 CoEnabledTransitionPairs, 7 FixpointIterations, 58 TrivialSequentialCompositions, 50 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 11 ConcurrentYvCompositions, 3 ChoiceCompositions, 122 TotalNumberOfCompositions, 15418 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 5259, independent: 4938, independent conditional: 0, independent unconditional: 4938, dependent: 321, dependent conditional: 0, dependent unconditional: 321, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2452, independent: 2399, independent conditional: 0, independent unconditional: 2399, dependent: 53, dependent conditional: 0, dependent unconditional: 53, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 5259, independent: 2539, independent conditional: 0, independent unconditional: 2539, dependent: 268, dependent conditional: 0, dependent unconditional: 268, unknown: 2452, unknown conditional: 0, unknown unconditional: 2452] , Statistics on independence cache: Total cache size (in pairs): 267, Positive cache size: 239, Positive conditional cache size: 0, Positive unconditional cache size: 239, Negative cache size: 28, Negative conditional cache size: 0, Negative unconditional cache size: 28, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - TimeoutResultAtElement [Line: 858]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/320 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 197877 conditions, 92156 events (73241/92155 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 6295. Compared 526427 event pairs, 13814 based on Foata normal form. 3664/101858 useless extension candidates. Maximal degree in co-relation 134410. Up to 44497 conditions per place.). - TimeoutResultAtElement [Line: 854]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/320 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 197877 conditions, 92156 events (73241/92155 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 6295. Compared 526427 event pairs, 13814 based on Foata normal form. 3664/101858 useless extension candidates. Maximal degree in co-relation 134410. Up to 44497 conditions per place.). - TimeoutResultAtElement [Line: 856]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/320 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 197877 conditions, 92156 events (73241/92155 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 6295. Compared 526427 event pairs, 13814 based on Foata normal form. 3664/101858 useless extension candidates. Maximal degree in co-relation 134410. Up to 44497 conditions per place.). - TimeoutResultAtElement [Line: 852]: Timeout (TraceAbstraction) Unable to prove that petrification did provide enough thread instances (tool internal message, not intended for end users) Cancelled while CegarLoopForPetriNet was enhancing Floyd-Hoare automaton (4states, 171/320 universal loopers) in iteration 10,while PetriNetUnfolder was constructing finite prefix that currently has 197877 conditions, 92156 events (73241/92155 cut-off events. For 16636/16636 co-relation queries the response was YES. Maximal size of possible extension queue 6295. Compared 526427 event pairs, 13814 based on Foata normal form. 3664/101858 useless extension candidates. Maximal degree in co-relation 134410. Up to 44497 conditions per place.). - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 9 procedures, 193 locations, 5 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: 5.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 5.4s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 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 for thread instance sufficiency with 2 thread instances CFG has 13 procedures, 221 locations, 5 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: 629.3s, OverallIterations: 10, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 618.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 6.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 500 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 406 mSDsluCounter, 25 SdHoareTripleChecker+Invalid, 0.8s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 33 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1167 IncrementalHoareTripleChecker+Invalid, 1200 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 33 mSolverCounterUnsat, 25 mSDtfsCounter, 1167 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 303 GetRequests, 266 SyntacticMatches, 6 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=188occurred in iteration=8, InterpolantAutomatonStates: 36, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 421 NumberOfCodeBlocks, 421 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 471 ConstructedInterpolants, 0 QuantifiedInterpolants, 719 SizeOfPredicates, 0 NumberOfNonLiveVariables, 2372 ConjunctsInSsa, 29 ConjunctsInUnsatCore, 22 InterpolantComputations, 7 PerfectInterpolantSequences, 268/297 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: Timeout Completed graceful shutdown