/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 PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_tso_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:54:25,129 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:54:25,208 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:54:25,215 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:54:25,215 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:54:25,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:54:25,216 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:54:25,247 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:54:25,247 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:54:25,251 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:54:25,251 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:54:25,252 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:54:25,252 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:54:25,254 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:54:25,254 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:54:25,254 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:54:25,254 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:54:25,254 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:54:25,254 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:54:25,255 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:54:25,255 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:54:25,255 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:54:25,255 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:54:25,256 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:54:25,256 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:54:25,256 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:54:25,256 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:54:25,257 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:54:25,257 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:54:25,257 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:54:25,258 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:54:25,258 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:54:25,258 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:54:25,258 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:54:25,259 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:54:25,260 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:54:25,479 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:54:25,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:54:25,502 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:54:25,503 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:54:25,504 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:54:25,504 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_tso_bound2.i [2023-08-04 05:54:26,651 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:54:26,883 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:54:26,884 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix027_tso_bound2.i [2023-08-04 05:54:26,906 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4f7308c/93da92ec05d14c73b63d532b9c7d8762/FLAGfe73e3d34 [2023-08-04 05:54:26,917 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e4f7308c/93da92ec05d14c73b63d532b9c7d8762 [2023-08-04 05:54:26,919 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:54:26,921 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:54:26,921 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:54:26,922 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:54:26,927 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:54:26,927 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:54:26" (1/1) ... [2023-08-04 05:54:26,928 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@20a233bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:26, skipping insertion in model container [2023-08-04 05:54:26,928 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:54:26" (1/1) ... [2023-08-04 05:54:26,979 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:54:27,116 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_mix027_tso_bound2.i[944,957] [2023-08-04 05:54:27,331 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:54:27,343 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:54:27,355 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_mix027_tso_bound2.i[944,957] [2023-08-04 05:54:27,362 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:54:27,363 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:54:27,402 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:54:27,432 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:54:27,432 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:54:27,438 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:54:27,438 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27 WrapperNode [2023-08-04 05:54:27,439 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:54:27,439 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:54:27,440 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:54:27,440 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:54:27,445 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,459 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,486 INFO L138 Inliner]: procedures = 177, calls = 69, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 193 [2023-08-04 05:54:27,487 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:54:27,487 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:54:27,487 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:54:27,487 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:54:27,500 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,500 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,504 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,504 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,512 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,523 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,525 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,527 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,530 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:54:27,531 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:54:27,531 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:54:27,531 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:54:27,531 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (1/1) ... [2023-08-04 05:54:27,541 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:54:27,552 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:54:27,574 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 05:54:27,596 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 05:54:27,609 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:54:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:54:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:54:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:54:27,610 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:54:27,611 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:54:27,611 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:54:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:54:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:54:27,612 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:54:27,612 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:54:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure P3 [2023-08-04 05:54:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure P3 [2023-08-04 05:54:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:54:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:54:27,613 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:54:27,613 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:54:27,614 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 05:54:27,788 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:54:27,791 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:54:28,074 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:54:28,231 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:54:28,231 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-04 05:54:28,233 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:54:28 BoogieIcfgContainer [2023-08-04 05:54:28,233 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:54:28,235 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:54:28,235 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:54:28,237 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:54:28,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:54:26" (1/3) ... [2023-08-04 05:54:28,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4342c56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:54:28, skipping insertion in model container [2023-08-04 05:54:28,238 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:54:27" (2/3) ... [2023-08-04 05:54:28,238 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4342c56d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:54:28, skipping insertion in model container [2023-08-04 05:54:28,239 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:54:28" (3/3) ... [2023-08-04 05:54:28,239 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix027_tso_bound2.i [2023-08-04 05:54:28,246 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:54:28,254 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:54:28,254 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:54:28,254 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:54:28,296 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:54:28,325 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:54:28,535 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:54:28,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:28,546 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5779 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:54:28,546 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:54:28,555 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 160 places, 157 transitions, 332 flow [2023-08-04 05:54:28,558 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:54:28,571 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 160 places, 157 transitions, 332 flow [2023-08-04 05:54:28,575 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 160 places, 157 transitions, 332 flow [2023-08-04 05:54:28,575 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 160 places, 157 transitions, 332 flow [2023-08-04 05:54:28,694 INFO L124 PetriNetUnfolderBase]: 62/932 cut-off events. [2023-08-04 05:54:28,694 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:28,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 981 conditions, 932 events. 62/932 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5765 event pairs, 0 based on Foata normal form. 0/822 useless extension candidates. Maximal degree in co-relation 552. Up to 32 conditions per place. [2023-08-04 05:54:28,713 INFO L119 LiptonReduction]: Number of co-enabled transitions 4440 [2023-08-04 05:54:32,610 INFO L134 LiptonReduction]: Checked pairs total: 12422 [2023-08-04 05:54:32,610 INFO L136 LiptonReduction]: Total number of compositions: 130 [2023-08-04 05:54:32,622 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:54:32,627 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;@1ccbe24b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:54:32,627 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:54:32,631 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:54:32,631 INFO L124 PetriNetUnfolderBase]: 0/11 cut-off events. [2023-08-04 05:54:32,631 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:32,631 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:54:32,632 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:54:32,632 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:54:32,636 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:54:32,636 INFO L85 PathProgramCache]: Analyzing trace with hash 636604623, now seen corresponding path program 1 times [2023-08-04 05:54:32,643 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:54:32,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2000117448] [2023-08-04 05:54:32,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:54:32,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:54:32,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:54:32,850 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:54:32,851 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:54:32,851 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2000117448] [2023-08-04 05:54:32,852 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2000117448] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:54:32,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:54:32,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:54:32,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137903748] [2023-08-04 05:54:32,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:54:32,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:54:32,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:54:32,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:54:32,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:54:32,909 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 135 out of 288 [2023-08-04 05:54:32,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 44 transitions, 106 flow. Second operand has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:32,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:54:32,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 135 of 288 [2023-08-04 05:54:32,915 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:54:35,201 INFO L124 PetriNetUnfolderBase]: 14237/20460 cut-off events. [2023-08-04 05:54:35,202 INFO L125 PetriNetUnfolderBase]: For 71/71 co-relation queries the response was YES. [2023-08-04 05:54:35,235 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41003 conditions, 20460 events. 14237/20460 cut-off events. For 71/71 co-relation queries the response was YES. Maximal size of possible extension queue 855. Compared 130289 event pairs, 12812 based on Foata normal form. 600/17736 useless extension candidates. Maximal degree in co-relation 40989. Up to 19930 conditions per place. [2023-08-04 05:54:35,327 INFO L140 encePairwiseOnDemand]: 284/288 looper letters, 36 selfloop transitions, 2 changer transitions 1/47 dead transitions. [2023-08-04 05:54:35,328 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 54 places, 47 transitions, 190 flow [2023-08-04 05:54:35,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:54:35,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:54:35,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 05:54:35,346 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5162037037037037 [2023-08-04 05:54:35,347 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 05:54:35,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 05:54:35,350 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:54:35,352 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 05:54:35,357 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,363 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 288.0) internal successors, (1152), 4 states have internal predecessors, (1152), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,364 INFO L175 Difference]: Start difference. First operand has 52 places, 44 transitions, 106 flow. Second operand 3 states and 446 transitions. [2023-08-04 05:54:35,365 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 54 places, 47 transitions, 190 flow [2023-08-04 05:54:35,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 54 places, 47 transitions, 190 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:54:35,381 INFO L231 Difference]: Finished difference. Result has 55 places, 43 transitions, 112 flow [2023-08-04 05:54:35,383 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=104, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=112, PETRI_PLACES=55, PETRI_TRANSITIONS=43} [2023-08-04 05:54:35,386 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 3 predicate places. [2023-08-04 05:54:35,387 INFO L495 AbstractCegarLoop]: Abstraction has has 55 places, 43 transitions, 112 flow [2023-08-04 05:54:35,387 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 136.66666666666666) internal successors, (410), 3 states have internal predecessors, (410), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,387 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:54:35,388 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:54:35,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:54:35,388 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:54:35,389 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:54:35,389 INFO L85 PathProgramCache]: Analyzing trace with hash 854434817, now seen corresponding path program 1 times [2023-08-04 05:54:35,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:54:35,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [168008041] [2023-08-04 05:54:35,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:54:35,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:54:35,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:54:35,527 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:54:35,527 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:54:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [168008041] [2023-08-04 05:54:35,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [168008041] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:54:35,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043736042] [2023-08-04 05:54:35,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:54:35,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:54:35,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:54:35,533 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 05:54:35,559 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 05:54:35,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:54:35,630 INFO L262 TraceCheckSpWp]: Trace formula consists of 161 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:54:35,634 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:54:35,678 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:54:35,678 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:54:35,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:54:35,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043736042] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:54:35,693 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:54:35,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:54:35,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68186258] [2023-08-04 05:54:35,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:54:35,694 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:54:35,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:54:35,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:54:35,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:54:35,714 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 134 out of 288 [2023-08-04 05:54:35,716 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 43 transitions, 112 flow. Second operand has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,716 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:54:35,716 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 134 of 288 [2023-08-04 05:54:35,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:54:35,743 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:54:35,745 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:54:35,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 60 conditions, 21 events. 6/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 28 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 05:54:35,749 INFO L140 encePairwiseOnDemand]: 285/288 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:54:35,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 20 places, 12 transitions, 55 flow [2023-08-04 05:54:35,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:54:35,750 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:54:35,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-04 05:54:35,752 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4756944444444444 [2023-08-04 05:54:35,752 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-04 05:54:35,752 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-04 05:54:35,752 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:54:35,752 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-04 05:54:35,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,756 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,757 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 288.0) internal successors, (1440), 5 states have internal predecessors, (1440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,757 INFO L175 Difference]: Start difference. First operand has 55 places, 43 transitions, 112 flow. Second operand 4 states and 548 transitions. [2023-08-04 05:54:35,757 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 20 places, 12 transitions, 55 flow [2023-08-04 05:54:35,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 05:54:35,758 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 05:54:35,758 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=288, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 05:54:35,759 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -35 predicate places. [2023-08-04 05:54:35,759 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 05:54:35,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 136.4) internal successors, (682), 5 states have internal predecessors, (682), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:35,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:54:35,762 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:54:35,763 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:54:35,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 05:54:35,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:54:35,973 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 05:54:35,975 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:54:35,980 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:54:36,052 INFO L124 PetriNetUnfolderBase]: 62/933 cut-off events. [2023-08-04 05:54:36,053 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:36,054 INFO L83 FinitePrefix]: Finished finitePrefix Result has 983 conditions, 933 events. 62/933 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 5779 event pairs, 0 based on Foata normal form. 0/823 useless extension candidates. Maximal degree in co-relation 554. Up to 32 conditions per place. [2023-08-04 05:54:36,055 INFO L82 GeneralOperation]: Start removeDead. Operand has 161 places, 158 transitions, 336 flow [2023-08-04 05:54:36,056 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 133 places, 127 transitions, 274 flow [2023-08-04 05:54:36,056 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:54:36,056 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:54:36,057 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 133 places, 127 transitions, 274 flow [2023-08-04 05:54:36,057 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 127 transitions, 274 flow [2023-08-04 05:54:36,088 INFO L124 PetriNetUnfolderBase]: 14/437 cut-off events. [2023-08-04 05:54:36,089 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:36,089 INFO L83 FinitePrefix]: Finished finitePrefix Result has 487 conditions, 437 events. 14/437 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1997 event pairs, 0 based on Foata normal form. 0/407 useless extension candidates. Maximal degree in co-relation 306. Up to 16 conditions per place. [2023-08-04 05:54:36,094 INFO L119 LiptonReduction]: Number of co-enabled transitions 2594 [2023-08-04 05:54:39,129 INFO L134 LiptonReduction]: Checked pairs total: 7549 [2023-08-04 05:54:39,130 INFO L136 LiptonReduction]: Total number of compositions: 97 [2023-08-04 05:54:39,131 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:54:39,132 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;@1ccbe24b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:54:39,132 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:54:39,136 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:54:39,136 INFO L124 PetriNetUnfolderBase]: 0/29 cut-off events. [2023-08-04 05:54:39,136 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:39,136 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:54:39,136 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:54:39,137 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2023-08-04 05:54:39,137 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:54:39,137 INFO L85 PathProgramCache]: Analyzing trace with hash 1122887569, now seen corresponding path program 1 times [2023-08-04 05:54:39,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:54:39,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [320854084] [2023-08-04 05:54:39,137 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:54:39,138 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:54:39,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:54:39,173 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:54:39,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:54:39,206 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:54:39,206 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:54:39,206 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-04 05:54:39,206 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2023-08-04 05:54:39,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-04 05:54:39,207 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-04 05:54:39,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 05:54:39,207 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:54:39,208 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:54:39,208 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:54:39,208 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:54:39,240 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:54:39,243 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 203 places, 192 transitions, 432 flow [2023-08-04 05:54:39,739 INFO L124 PetriNetUnfolderBase]: 282/4328 cut-off events. [2023-08-04 05:54:39,740 INFO L125 PetriNetUnfolderBase]: For 80/80 co-relation queries the response was YES. [2023-08-04 05:54:39,767 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4617 conditions, 4328 events. 282/4328 cut-off events. For 80/80 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42042 event pairs, 0 based on Foata normal form. 0/3839 useless extension candidates. Maximal degree in co-relation 3123. Up to 162 conditions per place. [2023-08-04 05:54:39,767 INFO L82 GeneralOperation]: Start removeDead. Operand has 203 places, 192 transitions, 432 flow [2023-08-04 05:54:39,777 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 202 places, 191 transitions, 426 flow [2023-08-04 05:54:39,778 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:54:39,778 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 202 places, 191 transitions, 426 flow [2023-08-04 05:54:39,778 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 202 places, 191 transitions, 426 flow [2023-08-04 05:54:39,778 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 202 places, 191 transitions, 426 flow [2023-08-04 05:54:40,260 INFO L124 PetriNetUnfolderBase]: 282/4327 cut-off events. [2023-08-04 05:54:40,261 INFO L125 PetriNetUnfolderBase]: For 79/79 co-relation queries the response was YES. [2023-08-04 05:54:40,279 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4614 conditions, 4327 events. 282/4327 cut-off events. For 79/79 co-relation queries the response was YES. Maximal size of possible extension queue 110. Compared 42006 event pairs, 0 based on Foata normal form. 0/3838 useless extension candidates. Maximal degree in co-relation 3120. Up to 162 conditions per place. [2023-08-04 05:54:40,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 10916 [2023-08-04 05:54:43,932 INFO L134 LiptonReduction]: Checked pairs total: 33523 [2023-08-04 05:54:43,933 INFO L136 LiptonReduction]: Total number of compositions: 139 [2023-08-04 05:54:43,935 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:54:43,935 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;@1ccbe24b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:54:43,936 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:54:43,938 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:54:43,938 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 05:54:43,938 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:54:43,938 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:54:43,938 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:54:43,938 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:54:43,939 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:54:43,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1077578665, now seen corresponding path program 1 times [2023-08-04 05:54:43,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:54:43,939 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1921482792] [2023-08-04 05:54:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:54:43,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:54:43,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:54:43,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 05:54:43,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:54:44,000 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1921482792] [2023-08-04 05:54:44,000 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1921482792] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:54:44,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:54:44,001 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:54:44,001 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1411598183] [2023-08-04 05:54:44,001 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:54:44,001 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:54:44,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:54:44,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:54:44,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:54:44,014 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 159 out of 331 [2023-08-04 05:54:44,014 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 86 places, 70 transitions, 184 flow. Second operand has 3 states, 3 states have (on average 160.66666666666666) internal successors, (482), 3 states have internal predecessors, (482), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:54:44,015 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:54:44,015 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 159 of 331 [2023-08-04 05:54:44,015 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand