/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_safe009_power.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:07:31,145 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:07:31,225 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:07:31,231 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:07:31,232 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:07:31,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:07:31,233 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:07:31,262 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:07:31,263 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:07:31,267 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:07:31,268 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:07:31,268 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:07:31,269 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:07:31,270 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:07:31,270 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:07:31,271 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:07:31,271 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:07:31,271 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:07:31,271 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:07:31,271 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:07:31,272 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:07:31,272 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:07:31,272 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:07:31,273 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:07:31,273 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:07:31,273 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:07:31,273 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:07:31,274 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:07:31,274 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:07:31,275 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:07:31,276 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:07:31,276 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:07:31,276 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:07:31,276 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:07:31,276 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:07:31,277 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:07:31,278 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:07:31,278 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:07:31,278 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:07:31,278 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:07:31,278 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:07:31,279 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:07:31,519 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:07:31,546 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:07:31,548 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:07:31,549 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:07:31,550 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:07:31,551 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe009_power.opt_bound2.i [2023-08-03 18:07:32,672 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:07:32,947 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:07:32,948 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe009_power.opt_bound2.i [2023-08-03 18:07:32,964 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930b1a60d/d8cc8fcefbd34b8296bf929e76026c30/FLAG1beb1dc3d [2023-08-03 18:07:33,231 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/930b1a60d/d8cc8fcefbd34b8296bf929e76026c30 [2023-08-03 18:07:33,233 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:07:33,234 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:07:33,236 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:07:33,236 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:07:33,239 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:07:33,241 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,242 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@47592049 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33, skipping insertion in model container [2023-08-03 18:07:33,242 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,305 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:07:33,480 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_safe009_power.opt_bound2.i[951,964] [2023-08-03 18:07:33,718 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:07:33,732 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:07:33,744 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_safe009_power.opt_bound2.i[951,964] [2023-08-03 18:07:33,757 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:07:33,759 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 18:07:33,812 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:07:33,876 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:07:33,876 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:07:33,883 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:07:33,883 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33 WrapperNode [2023-08-03 18:07:33,883 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:07:33,885 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:07:33,885 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:07:33,885 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:07:33,892 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,926 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,962 INFO L138 Inliner]: procedures = 176, calls = 71, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 204 [2023-08-03 18:07:33,962 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:07:33,963 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:07:33,963 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:07:33,963 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:07:33,978 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,979 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,985 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,985 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:33,995 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:34,004 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:34,010 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:34,013 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:34,017 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:07:34,018 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:07:34,018 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:07:34,018 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:07:34,019 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (1/1) ... [2023-08-03 18:07:34,025 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:07:34,038 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:07:34,052 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-03 18:07:34,097 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-03 18:07:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:07:34,116 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:07:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:07:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:07:34,117 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:07:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:07:34,118 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:07:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:07:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:07:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:07:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:07:34,119 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:07:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:07:34,119 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:07:34,120 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:07:34,120 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:07:34,122 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 18:07:34,290 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:07:34,293 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:07:34,740 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:07:34,991 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:07:34,992 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:07:34,994 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:07:34 BoogieIcfgContainer [2023-08-03 18:07:34,995 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:07:34,998 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:07:34,998 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:07:35,002 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:07:35,002 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:07:33" (1/3) ... [2023-08-03 18:07:35,003 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de1c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:07:35, skipping insertion in model container [2023-08-03 18:07:35,003 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:07:33" (2/3) ... [2023-08-03 18:07:35,004 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7de1c150 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:07:35, skipping insertion in model container [2023-08-03 18:07:35,004 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:07:34" (3/3) ... [2023-08-03 18:07:35,005 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe009_power.opt_bound2.i [2023-08-03 18:07:35,013 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:07:35,019 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:07:35,020 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 18:07:35,020 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:07:35,115 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:07:35,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,330 INFO L124 PetriNetUnfolderBase]: 30/462 cut-off events. [2023-08-03 18:07:35,331 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:07:35,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 462 events. 30/462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1928 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-03 18:07:35,339 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,350 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,354 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:07:35,371 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,375 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,375 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 18:07:35,442 INFO L124 PetriNetUnfolderBase]: 30/462 cut-off events. [2023-08-03 18:07:35,442 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:07:35,445 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 462 events. 30/462 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1928 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 287. Up to 16 conditions per place. [2023-08-03 18:07:35,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 2620 [2023-08-03 18:07:41,816 INFO L134 LiptonReduction]: Checked pairs total: 7318 [2023-08-03 18:07:41,816 INFO L136 LiptonReduction]: Total number of compositions: 127 [2023-08-03 18:07:41,835 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:07:41,842 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;@2e48d53b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:07:41,843 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 18:07:41,849 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:07:41,849 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-08-03 18:07:41,849 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:07:41,850 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:07:41,850 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:07:41,851 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:07:41,855 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:07:41,856 INFO L85 PathProgramCache]: Analyzing trace with hash 869872698, now seen corresponding path program 1 times [2023-08-03 18:07:41,863 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:07:41,864 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188653544] [2023-08-03 18:07:41,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:07:41,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:07:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:07:42,271 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:07:42,272 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:07:42,272 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188653544] [2023-08-03 18:07:42,273 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188653544] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:07:42,273 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:07:42,273 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:07:42,274 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2088746382] [2023-08-03 18:07:42,274 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:07:42,281 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:07:42,285 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:07:42,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:07:42,303 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:07:42,307 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 273 [2023-08-03 18:07:42,309 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 34 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:42,309 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:07:42,310 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 273 [2023-08-03 18:07:42,310 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:07:43,168 INFO L124 PetriNetUnfolderBase]: 2492/3962 cut-off events. [2023-08-03 18:07:43,168 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-03 18:07:43,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7982 conditions, 3962 events. 2492/3962 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 178. Compared 22268 event pairs, 1010 based on Foata normal form. 150/3620 useless extension candidates. Maximal degree in co-relation 6946. Up to 2194 conditions per place. [2023-08-03 18:07:43,192 INFO L140 encePairwiseOnDemand]: 269/273 looper letters, 44 selfloop transitions, 2 changer transitions 4/54 dead transitions. [2023-08-03 18:07:43,193 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 54 transitions, 229 flow [2023-08-03 18:07:43,194 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:07:43,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:07:43,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 437 transitions. [2023-08-03 18:07:43,210 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5335775335775336 [2023-08-03 18:07:43,211 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 437 transitions. [2023-08-03 18:07:43,212 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 437 transitions. [2023-08-03 18:07:43,215 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:07:43,217 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 437 transitions. [2023-08-03 18:07:43,222 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.66666666666666) internal successors, (437), 3 states have internal predecessors, (437), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:43,227 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:43,228 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 273.0) internal successors, (1092), 4 states have internal predecessors, (1092), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:43,230 INFO L175 Difference]: Start difference. First operand has 40 places, 34 transitions, 83 flow. Second operand 3 states and 437 transitions. [2023-08-03 18:07:43,230 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 54 transitions, 229 flow [2023-08-03 18:07:43,234 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 18:07:43,235 INFO L231 Difference]: Finished difference. Result has 41 places, 30 transitions, 79 flow [2023-08-03 18:07:43,237 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=273, PETRI_DIFFERENCE_MINUEND_FLOW=79, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=79, PETRI_PLACES=41, PETRI_TRANSITIONS=30} [2023-08-03 18:07:43,241 INFO L281 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2023-08-03 18:07:43,242 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 30 transitions, 79 flow [2023-08-03 18:07:43,242 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.66666666666666) internal successors, (389), 3 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:43,242 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:07:43,242 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:07:43,242 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:07:43,243 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 18:07:43,250 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:07:43,250 INFO L85 PathProgramCache]: Analyzing trace with hash 1196307779, now seen corresponding path program 1 times [2023-08-03 18:07:43,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:07:43,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2022511736] [2023-08-03 18:07:43,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:07:43,251 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:07:43,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:07:43,279 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:07:43,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:07:43,323 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:07:43,323 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:07:43,324 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 18:07:43,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 18:07:43,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 18:07:43,326 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 18:07:43,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 18:07:43,327 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 18:07:43,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:07:43,328 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 18:07:43,330 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:07:43,331 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:07:43,385 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:07:43,392 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,566 INFO L124 PetriNetUnfolderBase]: 93/1377 cut-off events. [2023-08-03 18:07:43,566 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:07:43,572 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1377 events. 93/1377 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9334 event pairs, 0 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 1009. Up to 54 conditions per place. [2023-08-03 18:07:43,573 INFO L82 GeneralOperation]: Start removeDead. Operand has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,577 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,577 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:07:43,577 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,578 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,578 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 178 places, 170 transitions, 376 flow [2023-08-03 18:07:43,715 INFO L124 PetriNetUnfolderBase]: 93/1377 cut-off events. [2023-08-03 18:07:43,715 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:07:43,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1475 conditions, 1377 events. 93/1377 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9334 event pairs, 0 based on Foata normal form. 0/1216 useless extension candidates. Maximal degree in co-relation 1009. Up to 54 conditions per place. [2023-08-03 18:07:43,747 INFO L119 LiptonReduction]: Number of co-enabled transitions 6256 [2023-08-03 18:07:51,291 INFO L134 LiptonReduction]: Checked pairs total: 22292 [2023-08-03 18:07:51,291 INFO L136 LiptonReduction]: Total number of compositions: 133 [2023-08-03 18:07:51,293 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:07:51,294 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;@2e48d53b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:07:51,294 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 18:07:51,298 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:07:51,298 INFO L124 PetriNetUnfolderBase]: 1/18 cut-off events. [2023-08-03 18:07:51,298 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:07:51,298 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:07:51,299 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 18:07:51,299 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:07:51,299 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:07:51,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1182161291, now seen corresponding path program 1 times [2023-08-03 18:07:51,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:07:51,299 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057120223] [2023-08-03 18:07:51,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:07:51,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:07:51,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:07:51,422 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:07:51,422 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:07:51,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057120223] [2023-08-03 18:07:51,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057120223] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:07:51,422 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:07:51,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 18:07:51,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1222243775] [2023-08-03 18:07:51,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:07:51,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:07:51,423 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:07:51,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:07:51,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:07:51,428 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 303 [2023-08-03 18:07:51,429 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 52 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:07:51,429 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:07:51,429 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 303 [2023-08-03 18:07:51,429 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:09:34,185 INFO L124 PetriNetUnfolderBase]: 584082/735524 cut-off events. [2023-08-03 18:09:34,186 INFO L125 PetriNetUnfolderBase]: For 10779/10779 co-relation queries the response was YES. [2023-08-03 18:09:36,309 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1480045 conditions, 735524 events. 584082/735524 cut-off events. For 10779/10779 co-relation queries the response was YES. Maximal size of possible extension queue 15593. Compared 4714219 event pairs, 129702 based on Foata normal form. 16317/676612 useless extension candidates. Maximal degree in co-relation 1063043. Up to 614901 conditions per place. [2023-08-03 18:09:39,184 INFO L140 encePairwiseOnDemand]: 297/303 looper letters, 75 selfloop transitions, 3 changer transitions 0/86 dead transitions. [2023-08-03 18:09:39,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 86 transitions, 385 flow [2023-08-03 18:09:39,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:09:39,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:09:39,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-03 18:09:39,187 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5621562156215621 [2023-08-03 18:09:39,187 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-03 18:09:39,187 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-03 18:09:39,187 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:09:39,187 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-03 18:09:39,189 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:09:39,191 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:09:39,191 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 303.0) internal successors, (1212), 4 states have internal predecessors, (1212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:09:39,192 INFO L175 Difference]: Start difference. First operand has 64 places, 52 transitions, 140 flow. Second operand 3 states and 511 transitions. [2023-08-03 18:09:39,192 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 86 transitions, 385 flow [2023-08-03 18:09:39,206 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 86 transitions, 379 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:09:39,208 INFO L231 Difference]: Finished difference. Result has 67 places, 53 transitions, 153 flow [2023-08-03 18:09:39,208 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=303, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=153, PETRI_PLACES=67, PETRI_TRANSITIONS=53} [2023-08-03 18:09:39,209 INFO L281 CegarLoopForPetriNet]: 64 programPoint places, 3 predicate places. [2023-08-03 18:09:39,209 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 53 transitions, 153 flow [2023-08-03 18:09:39,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:09:39,210 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:09:39,210 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:09:39,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 18:09:39,210 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 18:09:39,211 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:09:39,211 INFO L85 PathProgramCache]: Analyzing trace with hash -1923690118, now seen corresponding path program 1 times [2023-08-03 18:09:39,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:09:39,211 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708393087] [2023-08-03 18:09:39,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:09:39,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:09:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:09:39,252 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 18:09:39,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:09:39,253 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708393087] [2023-08-03 18:09:39,253 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708393087] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:09:39,253 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:09:39,254 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:09:39,254 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [614300867] [2023-08-03 18:09:39,254 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:09:39,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:09:39,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:09:39,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:09:39,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:09:39,264 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 303 [2023-08-03 18:09:39,265 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 53 transitions, 153 flow. Second operand has 3 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:09:39,265 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:09:39,265 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 303 [2023-08-03 18:09:39,265 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand