/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe002_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:55:27,727 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:55:27,801 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:55:27,806 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:55:27,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:55:27,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:55:27,807 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:55:27,834 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:55:27,834 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:55:27,838 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:55:27,838 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:55:27,839 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:55:27,839 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:55:27,840 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:55:27,841 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:55:27,841 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:55:27,841 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:55:27,841 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:55:27,842 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:55:27,842 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:55:27,842 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:55:27,845 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:55:27,845 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:55:27,845 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:55:27,845 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:55:27,845 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:55:27,846 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:55:27,846 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:55:27,847 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:55:27,847 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:55:27,848 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:55:27,848 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:55:27,848 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:55:27,848 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:55:27,849 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:55:27,850 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:55:27,851 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:55:28,079 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:55:28,101 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:55:28,104 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:55:28,105 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:55:28,105 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:55:28,106 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe002_rmo.oepc_bound2.i [2023-08-03 17:55:29,208 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:55:29,439 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:55:29,439 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe002_rmo.oepc_bound2.i [2023-08-03 17:55:29,452 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ecc20c7/7a6bc0855a914e2c9267e651bdaed9aa/FLAGe02a6553b [2023-08-03 17:55:29,463 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/59ecc20c7/7a6bc0855a914e2c9267e651bdaed9aa [2023-08-03 17:55:29,466 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:55:29,467 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:55:29,468 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:55:29,468 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:55:29,478 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:55:29,479 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:29,480 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75440225 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29, skipping insertion in model container [2023-08-03 17:55:29,480 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:29,525 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:55:29,651 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_safe002_rmo.oepc_bound2.i[993,1006] [2023-08-03 17:55:29,842 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:55:29,853 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:55:29,864 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_safe002_rmo.oepc_bound2.i[993,1006] [2023-08-03 17:55:29,884 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:55:29,893 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:55:29,929 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:55:29,967 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:55:29,967 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:55:29,973 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:55:29,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29 WrapperNode [2023-08-03 17:55:29,974 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:55:29,975 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:55:29,975 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:55:29,975 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:55:29,981 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,001 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,026 INFO L138 Inliner]: procedures = 176, calls = 82, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 194 [2023-08-03 17:55:30,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:55:30,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:55:30,027 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:55:30,027 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:55:30,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,036 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,040 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,040 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,051 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,055 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,058 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,060 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:55:30,066 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:55:30,066 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:55:30,066 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:55:30,067 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (1/1) ... [2023-08-03 17:55:30,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:55:30,083 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:55:30,096 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 17:55:30,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 17:55:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 17:55:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:55:30,155 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:55:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:55:30,156 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:55:30,156 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:55:30,157 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:55:30,157 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:55:30,157 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:55:30,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:55:30,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:55:30,158 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 17:55:30,278 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:55:30,280 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:55:30,679 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:55:30,969 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:55:30,969 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:55:30,973 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:55:30 BoogieIcfgContainer [2023-08-03 17:55:30,973 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:55:30,975 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:55:30,976 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:55:30,978 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:55:30,979 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:55:29" (1/3) ... [2023-08-03 17:55:30,980 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53845a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:55:30, skipping insertion in model container [2023-08-03 17:55:30,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:55:29" (2/3) ... [2023-08-03 17:55:30,981 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@53845a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:55:30, skipping insertion in model container [2023-08-03 17:55:30,981 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:55:30" (3/3) ... [2023-08-03 17:55:30,982 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe002_rmo.oepc_bound2.i [2023-08-03 17:55:30,989 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:55:30,998 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:55:30,998 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 17:55:30,998 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:55:31,069 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:55:31,106 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 17:55:31,212 INFO L124 PetriNetUnfolderBase]: 30/465 cut-off events. [2023-08-03 17:55:31,212 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:55:31,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 465 events. 30/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1955 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2023-08-03 17:55:31,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 17:55:31,221 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 137 places, 134 transitions, 283 flow [2023-08-03 17:55:31,224 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:55:31,231 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 137 places, 134 transitions, 283 flow [2023-08-03 17:55:31,233 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 137 places, 134 transitions, 283 flow [2023-08-03 17:55:31,234 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 137 places, 134 transitions, 283 flow [2023-08-03 17:55:31,297 INFO L124 PetriNetUnfolderBase]: 22/369 cut-off events. [2023-08-03 17:55:31,297 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:55:31,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 394 conditions, 369 events. 22/369 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1416 event pairs, 0 based on Foata normal form. 0/333 useless extension candidates. Maximal degree in co-relation 238. Up to 16 conditions per place. [2023-08-03 17:55:31,304 INFO L119 LiptonReduction]: Number of co-enabled transitions 1916 [2023-08-03 17:55:38,632 INFO L134 LiptonReduction]: Checked pairs total: 5081 [2023-08-03 17:55:38,632 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 17:55:38,642 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:55:38,648 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;@57024f73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:55:38,648 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:55:38,652 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:55:38,652 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 17:55:38,652 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:55:38,652 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:55:38,653 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:55:38,653 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:55:38,657 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:55:38,657 INFO L85 PathProgramCache]: Analyzing trace with hash 466420116, now seen corresponding path program 1 times [2023-08-03 17:55:38,664 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:55:38,665 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1462006585] [2023-08-03 17:55:38,665 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:55:38,665 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:55:38,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:55:38,787 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:55:38,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:55:38,827 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:55:38,829 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:55:38,829 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 17:55:38,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 17:55:38,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 17:55:38,831 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 17:55:38,832 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:55:38,832 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 17:55:38,835 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:55:38,835 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:55:38,873 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:55:38,876 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 169 transitions, 374 flow [2023-08-03 17:55:39,113 INFO L124 PetriNetUnfolderBase]: 93/1392 cut-off events. [2023-08-03 17:55:39,113 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:55:39,120 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 1392 events. 93/1392 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9449 event pairs, 0 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1015. Up to 54 conditions per place. [2023-08-03 17:55:39,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 169 transitions, 374 flow [2023-08-03 17:55:39,124 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 166 places, 157 transitions, 350 flow [2023-08-03 17:55:39,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:55:39,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 166 places, 157 transitions, 350 flow [2023-08-03 17:55:39,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 166 places, 157 transitions, 350 flow [2023-08-03 17:55:39,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 166 places, 157 transitions, 350 flow [2023-08-03 17:55:39,262 INFO L124 PetriNetUnfolderBase]: 66/1068 cut-off events. [2023-08-03 17:55:39,263 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:55:39,267 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1166 conditions, 1068 events. 66/1068 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6655 event pairs, 0 based on Foata normal form. 0/963 useless extension candidates. Maximal degree in co-relation 799. Up to 54 conditions per place. [2023-08-03 17:55:39,286 INFO L119 LiptonReduction]: Number of co-enabled transitions 4748 [2023-08-03 17:55:46,897 INFO L134 LiptonReduction]: Checked pairs total: 15991 [2023-08-03 17:55:46,898 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 17:55:46,899 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:55:46,900 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;@57024f73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:55:46,900 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 17:55:46,926 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:55:46,927 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-08-03 17:55:46,927 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 17:55:46,929 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:55:46,929 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:55:46,930 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:55:46,930 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:55:46,930 INFO L85 PathProgramCache]: Analyzing trace with hash 999148049, now seen corresponding path program 1 times [2023-08-03 17:55:46,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:55:46,931 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551419966] [2023-08-03 17:55:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:55:46,931 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:55:46,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:55:47,131 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:55:47,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:55:47,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551419966] [2023-08-03 17:55:47,133 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551419966] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:55:47,133 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:55:47,133 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:55:47,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637602397] [2023-08-03 17:55:47,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:55:47,140 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:55:47,147 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:55:47,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:55:47,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:55:47,181 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-03 17:55:47,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:55:47,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:55:47,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-03 17:55:47,185 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:56:09,286 INFO L124 PetriNetUnfolderBase]: 115988/156324 cut-off events. [2023-08-03 17:56:09,286 INFO L125 PetriNetUnfolderBase]: For 3828/3828 co-relation queries the response was YES. [2023-08-03 17:56:09,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 309611 conditions, 156324 events. 115988/156324 cut-off events. For 3828/3828 co-relation queries the response was YES. Maximal size of possible extension queue 4430. Compared 1062102 event pairs, 94470 based on Foata normal form. 0/150206 useless extension candidates. Maximal degree in co-relation 88852. Up to 148266 conditions per place. [2023-08-03 17:56:10,400 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 36 selfloop transitions, 2 changer transitions 0/50 dead transitions. [2023-08-03 17:56:10,401 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 212 flow [2023-08-03 17:56:10,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:56:10,407 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:56:10,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 468 transitions. [2023-08-03 17:56:10,425 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5473684210526316 [2023-08-03 17:56:10,425 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 468 transitions. [2023-08-03 17:56:10,426 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 468 transitions. [2023-08-03 17:56:10,429 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:56:10,431 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 468 transitions. [2023-08-03 17:56:10,436 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.0) internal successors, (468), 3 states have internal predecessors, (468), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:10,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:10,442 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:10,447 INFO L175 Difference]: Start difference. First operand has 59 places, 46 transitions, 128 flow. Second operand 3 states and 468 transitions. [2023-08-03 17:56:10,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 212 flow [2023-08-03 17:56:10,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 50 transitions, 206 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:56:10,464 INFO L231 Difference]: Finished difference. Result has 62 places, 47 transitions, 134 flow [2023-08-03 17:56:10,466 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=122, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=134, PETRI_PLACES=62, PETRI_TRANSITIONS=47} [2023-08-03 17:56:10,472 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 3 predicate places. [2023-08-03 17:56:10,474 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 47 transitions, 134 flow [2023-08-03 17:56:10,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:10,480 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:56:10,481 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:56:10,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:56:10,481 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:56:10,485 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:56:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash -349011965, now seen corresponding path program 1 times [2023-08-03 17:56:10,485 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:56:10,485 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893071074] [2023-08-03 17:56:10,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:10,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:56:10,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:10,602 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:56:10,602 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:56:10,602 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893071074] [2023-08-03 17:56:10,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893071074] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:56:10,603 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2058526032] [2023-08-03 17:56:10,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:10,603 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:56:10,603 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:56:10,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:56:10,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 17:56:10,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:10,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:56:10,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:56:10,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:56:10,781 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:56:10,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2058526032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:56:10,781 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:56:10,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:56:10,782 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977583393] [2023-08-03 17:56:10,782 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:56:10,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:56:10,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:56:10,783 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:56:10,783 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:56:10,795 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-03 17:56:10,795 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 47 transitions, 134 flow. Second operand has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:10,796 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:56:10,796 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-03 17:56:10,796 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:56:31,021 INFO L124 PetriNetUnfolderBase]: 112474/152239 cut-off events. [2023-08-03 17:56:31,022 INFO L125 PetriNetUnfolderBase]: For 2715/2715 co-relation queries the response was YES. [2023-08-03 17:56:31,456 INFO L83 FinitePrefix]: Finished finitePrefix Result has 299843 conditions, 152239 events. 112474/152239 cut-off events. For 2715/2715 co-relation queries the response was YES. Maximal size of possible extension queue 4488. Compared 1047191 event pairs, 89386 based on Foata normal form. 0/146850 useless extension candidates. Maximal degree in co-relation 299806. Up to 143101 conditions per place. [2023-08-03 17:56:32,014 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 42 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2023-08-03 17:56:32,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 56 transitions, 240 flow [2023-08-03 17:56:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:56:32,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:56:32,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 473 transitions. [2023-08-03 17:56:32,017 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5532163742690058 [2023-08-03 17:56:32,017 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 473 transitions. [2023-08-03 17:56:32,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 473 transitions. [2023-08-03 17:56:32,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:56:32,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 473 transitions. [2023-08-03 17:56:32,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.66666666666666) internal successors, (473), 3 states have internal predecessors, (473), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:32,020 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:32,021 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:32,021 INFO L175 Difference]: Start difference. First operand has 62 places, 47 transitions, 134 flow. Second operand 3 states and 473 transitions. [2023-08-03 17:56:32,021 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 56 transitions, 240 flow [2023-08-03 17:56:32,023 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 56 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:56:32,024 INFO L231 Difference]: Finished difference. Result has 64 places, 48 transitions, 144 flow [2023-08-03 17:56:32,024 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=144, PETRI_PLACES=64, PETRI_TRANSITIONS=48} [2023-08-03 17:56:32,025 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 5 predicate places. [2023-08-03 17:56:32,025 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 48 transitions, 144 flow [2023-08-03 17:56:32,026 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.0) internal successors, (438), 3 states have internal predecessors, (438), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:32,026 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:56:32,026 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:56:32,037 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:56:32,231 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:56:32,232 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:56:32,232 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:56:32,232 INFO L85 PathProgramCache]: Analyzing trace with hash 1912642216, now seen corresponding path program 1 times [2023-08-03 17:56:32,232 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:56:32,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1837001019] [2023-08-03 17:56:32,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:32,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:56:32,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:32,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:56:32,303 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:56:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1837001019] [2023-08-03 17:56:32,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1837001019] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:56:32,303 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [31010038] [2023-08-03 17:56:32,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:32,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:56:32,304 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:56:32,311 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:56:32,312 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 17:56:32,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:32,435 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:56:32,436 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:56:32,466 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 17:56:32,466 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:56:32,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [31010038] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:56:32,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:56:32,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:56:32,467 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888533947] [2023-08-03 17:56:32,467 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:56:32,467 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:56:32,467 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:56:32,468 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:56:32,468 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:56:32,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:56:32,483 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 48 transitions, 144 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:32,483 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:56:32,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:56:32,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:56:51,939 INFO L124 PetriNetUnfolderBase]: 112462/152195 cut-off events. [2023-08-03 17:56:51,940 INFO L125 PetriNetUnfolderBase]: For 3219/3219 co-relation queries the response was YES. [2023-08-03 17:56:52,407 INFO L83 FinitePrefix]: Finished finitePrefix Result has 300301 conditions, 152195 events. 112462/152195 cut-off events. For 3219/3219 co-relation queries the response was YES. Maximal size of possible extension queue 4495. Compared 1042309 event pairs, 76572 based on Foata normal form. 9/147055 useless extension candidates. Maximal degree in co-relation 86418. Up to 143205 conditions per place. [2023-08-03 17:56:52,889 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 40 selfloop transitions, 4 changer transitions 0/55 dead transitions. [2023-08-03 17:56:52,889 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 55 transitions, 249 flow [2023-08-03 17:56:52,889 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:56:52,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:56:52,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 754 transitions. [2023-08-03 17:56:52,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5291228070175439 [2023-08-03 17:56:52,892 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 754 transitions. [2023-08-03 17:56:52,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 754 transitions. [2023-08-03 17:56:52,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:56:52,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 754 transitions. [2023-08-03 17:56:52,894 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.8) internal successors, (754), 5 states have internal predecessors, (754), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:52,897 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:52,897 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:52,898 INFO L175 Difference]: Start difference. First operand has 64 places, 48 transitions, 144 flow. Second operand 5 states and 754 transitions. [2023-08-03 17:56:52,898 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 55 transitions, 249 flow [2023-08-03 17:56:52,900 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 55 transitions, 245 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:56:52,901 INFO L231 Difference]: Finished difference. Result has 67 places, 48 transitions, 160 flow [2023-08-03 17:56:52,901 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=160, PETRI_PLACES=67, PETRI_TRANSITIONS=48} [2023-08-03 17:56:52,902 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 8 predicate places. [2023-08-03 17:56:52,902 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 48 transitions, 160 flow [2023-08-03 17:56:52,902 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:52,902 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:56:52,903 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:56:52,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 17:56:53,108 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 [2023-08-03 17:56:53,108 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:56:53,109 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:56:53,109 INFO L85 PathProgramCache]: Analyzing trace with hash 868294109, now seen corresponding path program 1 times [2023-08-03 17:56:53,109 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:56:53,109 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1076177132] [2023-08-03 17:56:53,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:53,110 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:56:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:53,179 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 17:56:53,179 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:56:53,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1076177132] [2023-08-03 17:56:53,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1076177132] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:56:53,180 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1448906425] [2023-08-03 17:56:53,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:56:53,180 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:56:53,180 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:56:53,181 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:56:53,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 17:56:53,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:56:53,316 INFO L262 TraceCheckSpWp]: Trace formula consists of 253 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:56:53,317 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:56:53,326 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 17:56:53,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:56:53,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1448906425] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:56:53,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:56:53,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:56:53,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935695808] [2023-08-03 17:56:53,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:56:53,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:56:53,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:56:53,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:56:53,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:56:53,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 285 [2023-08-03 17:56:53,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 48 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:56:53,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:56:53,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 285 [2023-08-03 17:56:53,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:57:12,486 INFO L124 PetriNetUnfolderBase]: 110650/149332 cut-off events. [2023-08-03 17:57:12,487 INFO L125 PetriNetUnfolderBase]: For 1645/1645 co-relation queries the response was YES. [2023-08-03 17:57:12,927 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295140 conditions, 149332 events. 110650/149332 cut-off events. For 1645/1645 co-relation queries the response was YES. Maximal size of possible extension queue 4520. Compared 1024363 event pairs, 86146 based on Foata normal form. 0/144519 useless extension candidates. Maximal degree in co-relation 85016. Up to 135640 conditions per place. [2023-08-03 17:57:13,362 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 50 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 17:57:13,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 63 transitions, 294 flow [2023-08-03 17:57:13,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:57:13,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:57:13,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 479 transitions. [2023-08-03 17:57:13,364 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.560233918128655 [2023-08-03 17:57:13,364 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 479 transitions. [2023-08-03 17:57:13,364 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 479 transitions. [2023-08-03 17:57:13,364 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:57:13,364 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 479 transitions. [2023-08-03 17:57:13,366 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 159.66666666666666) internal successors, (479), 3 states have internal predecessors, (479), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:13,367 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:13,368 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 285.0) internal successors, (1140), 4 states have internal predecessors, (1140), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:13,368 INFO L175 Difference]: Start difference. First operand has 67 places, 48 transitions, 160 flow. Second operand 3 states and 479 transitions. [2023-08-03 17:57:13,368 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 63 transitions, 294 flow [2023-08-03 17:57:13,370 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 63 transitions, 287 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 17:57:13,371 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 165 flow [2023-08-03 17:57:13,371 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=165, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-08-03 17:57:13,372 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 9 predicate places. [2023-08-03 17:57:13,372 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 165 flow [2023-08-03 17:57:13,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.0) internal successors, (441), 3 states have internal predecessors, (441), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:13,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:57:13,372 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:57:13,380 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 17:57:13,577 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 [2023-08-03 17:57:13,578 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:57:13,578 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:57:13,578 INFO L85 PathProgramCache]: Analyzing trace with hash 904653367, now seen corresponding path program 1 times [2023-08-03 17:57:13,578 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:57:13,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [250004717] [2023-08-03 17:57:13,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:13,581 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:57:13,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:13,634 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:57:13,634 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:57:13,634 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [250004717] [2023-08-03 17:57:13,634 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [250004717] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:57:13,636 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1972076591] [2023-08-03 17:57:13,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:13,637 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:57:13,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:57:13,639 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:57:13,641 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 17:57:13,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:13,775 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:57:13,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:57:13,788 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:57:13,788 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:57:13,819 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 17:57:13,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1972076591] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:57:13,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:57:13,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:57:13,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [869394489] [2023-08-03 17:57:13,819 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:57:13,820 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:57:13,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:57:13,820 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:57:13,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:57:13,834 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:57:13,835 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:13,835 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:57:13,835 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:57:13,835 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:57:28,884 INFO L124 PetriNetUnfolderBase]: 86746/114827 cut-off events. [2023-08-03 17:57:28,884 INFO L125 PetriNetUnfolderBase]: For 9714/9714 co-relation queries the response was YES. [2023-08-03 17:57:29,269 INFO L83 FinitePrefix]: Finished finitePrefix Result has 235873 conditions, 114827 events. 86746/114827 cut-off events. For 9714/9714 co-relation queries the response was YES. Maximal size of possible extension queue 3527. Compared 727716 event pairs, 56700 based on Foata normal form. 3/114064 useless extension candidates. Maximal degree in co-relation 83609. Up to 109264 conditions per place. [2023-08-03 17:57:29,602 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 41 selfloop transitions, 3 changer transitions 0/55 dead transitions. [2023-08-03 17:57:29,602 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 55 transitions, 261 flow [2023-08-03 17:57:29,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:57:29,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:57:29,603 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 611 transitions. [2023-08-03 17:57:29,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359649122807018 [2023-08-03 17:57:29,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 611 transitions. [2023-08-03 17:57:29,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 611 transitions. [2023-08-03 17:57:29,604 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:57:29,604 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 611 transitions. [2023-08-03 17:57:29,605 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.75) internal successors, (611), 4 states have internal predecessors, (611), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:29,607 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:29,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:29,608 INFO L175 Difference]: Start difference. First operand has 68 places, 49 transitions, 165 flow. Second operand 4 states and 611 transitions. [2023-08-03 17:57:29,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 55 transitions, 261 flow [2023-08-03 17:57:29,614 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 55 transitions, 259 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:57:29,615 INFO L231 Difference]: Finished difference. Result has 70 places, 48 transitions, 161 flow [2023-08-03 17:57:29,615 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=161, PETRI_PLACES=70, PETRI_TRANSITIONS=48} [2023-08-03 17:57:29,615 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 11 predicate places. [2023-08-03 17:57:29,616 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 48 transitions, 161 flow [2023-08-03 17:57:29,616 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:29,616 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:57:29,616 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:57:29,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 17:57:29,821 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 [2023-08-03 17:57:29,822 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:57:29,822 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:57:29,822 INFO L85 PathProgramCache]: Analyzing trace with hash -50257080, now seen corresponding path program 1 times [2023-08-03 17:57:29,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:57:29,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073993682] [2023-08-03 17:57:29,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:29,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:57:29,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:29,893 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:57:29,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:57:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073993682] [2023-08-03 17:57:29,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073993682] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:57:29,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89875891] [2023-08-03 17:57:29,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:29,893 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:57:29,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:57:29,895 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:57:29,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 17:57:30,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:30,022 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:57:30,023 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:57:30,049 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 17:57:30,049 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:57:30,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89875891] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:57:30,049 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:57:30,049 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:57:30,049 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81937769] [2023-08-03 17:57:30,050 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:57:30,050 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:57:30,050 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:57:30,050 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:57:30,050 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:57:30,061 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:57:30,062 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 48 transitions, 161 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:30,062 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:57:30,062 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:57:30,062 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:57:44,547 INFO L124 PetriNetUnfolderBase]: 86338/114244 cut-off events. [2023-08-03 17:57:44,547 INFO L125 PetriNetUnfolderBase]: For 8611/8611 co-relation queries the response was YES. [2023-08-03 17:57:44,928 INFO L83 FinitePrefix]: Finished finitePrefix Result has 234004 conditions, 114244 events. 86338/114244 cut-off events. For 8611/8611 co-relation queries the response was YES. Maximal size of possible extension queue 3536. Compared 724596 event pairs, 26482 based on Foata normal form. 144/113658 useless extension candidates. Maximal degree in co-relation 82952. Up to 107898 conditions per place. [2023-08-03 17:57:45,255 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 56 selfloop transitions, 4 changer transitions 0/70 dead transitions. [2023-08-03 17:57:45,255 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 70 transitions, 327 flow [2023-08-03 17:57:45,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:57:45,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:57:45,257 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 769 transitions. [2023-08-03 17:57:45,257 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5396491228070175 [2023-08-03 17:57:45,257 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 769 transitions. [2023-08-03 17:57:45,257 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 769 transitions. [2023-08-03 17:57:45,258 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:57:45,258 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 769 transitions. [2023-08-03 17:57:45,260 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.8) internal successors, (769), 5 states have internal predecessors, (769), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:45,261 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:45,262 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 285.0) internal successors, (1710), 6 states have internal predecessors, (1710), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:45,262 INFO L175 Difference]: Start difference. First operand has 70 places, 48 transitions, 161 flow. Second operand 5 states and 769 transitions. [2023-08-03 17:57:45,262 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 70 transitions, 327 flow [2023-08-03 17:57:45,271 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 70 transitions, 320 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 17:57:45,272 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 173 flow [2023-08-03 17:57:45,272 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=150, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=173, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2023-08-03 17:57:45,273 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 12 predicate places. [2023-08-03 17:57:45,273 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 173 flow [2023-08-03 17:57:45,273 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:45,273 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:57:45,273 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:57:45,281 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 17:57:45,478 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 [2023-08-03 17:57:45,479 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:57:45,479 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:57:45,479 INFO L85 PathProgramCache]: Analyzing trace with hash -1791047993, now seen corresponding path program 1 times [2023-08-03 17:57:45,479 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:57:45,479 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [295956730] [2023-08-03 17:57:45,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:45,480 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:57:45,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:45,569 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:57:45,569 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:57:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [295956730] [2023-08-03 17:57:45,570 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [295956730] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:57:45,570 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1089529535] [2023-08-03 17:57:45,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:45,570 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:57:45,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:57:45,572 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:57:45,574 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 17:57:45,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:45,719 INFO L262 TraceCheckSpWp]: Trace formula consists of 289 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:57:45,721 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:57:45,734 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:57:45,735 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:57:45,751 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 17:57:45,752 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1089529535] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:57:45,752 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:57:45,752 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:57:45,752 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [204630359] [2023-08-03 17:57:45,752 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:57:45,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:57:45,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:57:45,754 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:57:45,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:57:45,767 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:57:45,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 173 flow. Second operand has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:45,769 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:57:45,769 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:57:45,769 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:57:57,998 INFO L124 PetriNetUnfolderBase]: 71896/94330 cut-off events. [2023-08-03 17:57:57,999 INFO L125 PetriNetUnfolderBase]: For 7849/7849 co-relation queries the response was YES. [2023-08-03 17:57:58,343 INFO L83 FinitePrefix]: Finished finitePrefix Result has 193642 conditions, 94330 events. 71896/94330 cut-off events. For 7849/7849 co-relation queries the response was YES. Maximal size of possible extension queue 3199. Compared 582057 event pairs, 44806 based on Foata normal form. 36/93780 useless extension candidates. Maximal degree in co-relation 68523. Up to 89116 conditions per place. [2023-08-03 17:57:58,603 INFO L140 encePairwiseOnDemand]: 282/285 looper letters, 52 selfloop transitions, 3 changer transitions 0/65 dead transitions. [2023-08-03 17:57:58,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 65 transitions, 311 flow [2023-08-03 17:57:58,603 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:57:58,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:57:58,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 622 transitions. [2023-08-03 17:57:58,604 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5456140350877193 [2023-08-03 17:57:58,604 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 622 transitions. [2023-08-03 17:57:58,604 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 622 transitions. [2023-08-03 17:57:58,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:57:58,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 622 transitions. [2023-08-03 17:57:58,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 155.5) internal successors, (622), 4 states have internal predecessors, (622), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:58,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:58,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:58,608 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 173 flow. Second operand 4 states and 622 transitions. [2023-08-03 17:57:58,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 65 transitions, 311 flow [2023-08-03 17:57:58,615 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 65 transitions, 306 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 17:57:58,616 INFO L231 Difference]: Finished difference. Result has 72 places, 47 transitions, 164 flow [2023-08-03 17:57:58,616 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=164, PETRI_PLACES=72, PETRI_TRANSITIONS=47} [2023-08-03 17:57:58,617 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 13 predicate places. [2023-08-03 17:57:58,617 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 47 transitions, 164 flow [2023-08-03 17:57:58,617 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.0) internal successors, (730), 5 states have internal predecessors, (730), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:58,617 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:57:58,618 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:57:58,624 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 17:57:58,823 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 [2023-08-03 17:57:58,823 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:57:58,823 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:57:58,824 INFO L85 PathProgramCache]: Analyzing trace with hash 305188066, now seen corresponding path program 1 times [2023-08-03 17:57:58,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:57:58,824 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709950015] [2023-08-03 17:57:58,824 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:58,824 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:57:58,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:58,893 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:57:58,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:57:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709950015] [2023-08-03 17:57:58,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709950015] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:57:58,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [357824691] [2023-08-03 17:57:58,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:57:58,894 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:57:58,894 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:57:58,896 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:57:58,898 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 17:57:59,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:57:59,049 INFO L262 TraceCheckSpWp]: Trace formula consists of 307 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:57:59,051 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:57:59,061 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:57:59,062 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:57:59,074 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:57:59,074 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [357824691] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:57:59,074 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:57:59,074 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 17:57:59,074 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037814703] [2023-08-03 17:57:59,075 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:57:59,075 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:57:59,075 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:57:59,075 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:57:59,076 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:57:59,087 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:57:59,087 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 47 transitions, 164 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:57:59,087 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:57:59,087 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:57:59,087 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:58:10,403 INFO L124 PetriNetUnfolderBase]: 65704/84727 cut-off events. [2023-08-03 17:58:10,403 INFO L125 PetriNetUnfolderBase]: For 6004/6004 co-relation queries the response was YES. [2023-08-03 17:58:10,698 INFO L83 FinitePrefix]: Finished finitePrefix Result has 175723 conditions, 84727 events. 65704/84727 cut-off events. For 6004/6004 co-relation queries the response was YES. Maximal size of possible extension queue 2896. Compared 493774 event pairs, 28792 based on Foata normal form. 576/85293 useless extension candidates. Maximal degree in co-relation 62166. Up to 50548 conditions per place. [2023-08-03 17:58:10,934 INFO L140 encePairwiseOnDemand]: 281/285 looper letters, 64 selfloop transitions, 4 changer transitions 0/78 dead transitions. [2023-08-03 17:58:10,934 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 78 transitions, 362 flow [2023-08-03 17:58:10,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 17:58:10,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 17:58:10,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 635 transitions. [2023-08-03 17:58:10,936 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5570175438596491 [2023-08-03 17:58:10,936 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 635 transitions. [2023-08-03 17:58:10,936 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 635 transitions. [2023-08-03 17:58:10,936 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:58:10,936 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 635 transitions. [2023-08-03 17:58:10,937 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 158.75) internal successors, (635), 4 states have internal predecessors, (635), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:58:10,939 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:58:10,939 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 285.0) internal successors, (1425), 5 states have internal predecessors, (1425), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:58:10,939 INFO L175 Difference]: Start difference. First operand has 72 places, 47 transitions, 164 flow. Second operand 4 states and 635 transitions. [2023-08-03 17:58:10,939 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 78 transitions, 362 flow [2023-08-03 17:58:10,943 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 78 transitions, 356 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 17:58:10,944 INFO L231 Difference]: Finished difference. Result has 74 places, 48 transitions, 178 flow [2023-08-03 17:58:10,944 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=285, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=178, PETRI_PLACES=74, PETRI_TRANSITIONS=48} [2023-08-03 17:58:10,945 INFO L281 CegarLoopForPetriNet]: 59 programPoint places, 15 predicate places. [2023-08-03 17:58:10,945 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 48 transitions, 178 flow [2023-08-03 17:58:10,945 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:58:10,945 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:58:10,945 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:58:10,956 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 17:58:11,151 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 [2023-08-03 17:58:11,151 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 17:58:11,151 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:58:11,152 INFO L85 PathProgramCache]: Analyzing trace with hash -977647383, now seen corresponding path program 1 times [2023-08-03 17:58:11,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:58:11,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1860128076] [2023-08-03 17:58:11,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:11,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:58:11,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:11,220 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:58:11,221 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:58:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1860128076] [2023-08-03 17:58:11,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1860128076] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:58:11,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1670110664] [2023-08-03 17:58:11,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:58:11,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:58:11,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:58:11,223 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 17:58:11,225 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 17:58:11,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:58:11,368 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:58:11,374 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:58:11,393 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 17:58:11,393 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:58:11,395 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1670110664] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:58:11,395 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:58:11,395 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 17:58:11,395 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580020449] [2023-08-03 17:58:11,395 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:58:11,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:58:11,397 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:58:11,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:58:11,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:58:11,411 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 285 [2023-08-03 17:58:11,412 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 48 transitions, 178 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 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) [2023-08-03 17:58:11,412 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:58:11,412 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 285 [2023-08-03 17:58:11,412 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand