/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_safe025_power_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:15:41,138 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:15:41,197 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:15:41,201 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:15:41,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:15:41,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:15:41,202 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:15:41,223 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:15:41,224 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:15:41,227 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:15:41,227 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:15:41,227 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:15:41,228 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:15:41,229 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:15:41,229 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:15:41,229 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:15:41,229 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:15:41,229 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:15:41,229 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:15:41,230 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:15:41,230 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:15:41,230 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:15:41,230 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:15:41,230 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:15:41,231 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:15:41,231 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:15:41,232 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:15:41,232 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:15:41,232 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:15:41,232 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:15:41,233 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:15:41,233 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:15:41,233 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:15:41,233 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:15:41,233 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:15:41,234 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:15:41,234 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:15:41,429 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:15:41,445 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:15:41,447 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:15:41,448 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:15:41,448 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:15:41,449 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_power_bound2.i [2023-08-04 07:15:42,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:15:42,590 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:15:42,591 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe025_power_bound2.i [2023-08-04 07:15:42,609 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560acc0ef/5e4f7d47c44b40bc9142c9580ba10b50/FLAG4a616b101 [2023-08-04 07:15:42,982 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/560acc0ef/5e4f7d47c44b40bc9142c9580ba10b50 [2023-08-04 07:15:42,984 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:15:42,984 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:15:42,985 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:15:42,985 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:15:42,987 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:15:42,988 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:15:42" (1/1) ... [2023-08-04 07:15:42,988 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2806dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:42, skipping insertion in model container [2023-08-04 07:15:42,988 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:15:42" (1/1) ... [2023-08-04 07:15:43,036 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:15:43,142 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_safe025_power_bound2.i[990,1003] [2023-08-04 07:15:43,300 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:15:43,307 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:15:43,314 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_safe025_power_bound2.i[990,1003] [2023-08-04 07:15:43,319 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 07:15:43,320 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-04 07:15:43,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:15:43,375 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:15:43,375 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:15:43,380 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:15:43,380 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43 WrapperNode [2023-08-04 07:15:43,380 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:15:43,381 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:15:43,381 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:15:43,381 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:15:43,385 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,398 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,417 INFO L138 Inliner]: procedures = 176, calls = 86, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 253 [2023-08-04 07:15:43,417 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:15:43,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:15:43,418 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:15:43,418 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:15:43,424 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,424 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,433 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,433 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,452 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,455 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,458 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,460 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:15:43,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:15:43,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:15:43,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:15:43,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (1/1) ... [2023-08-04 07:15:43,471 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:15:43,482 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:15:43,502 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 07:15:43,508 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 07:15:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 07:15:43,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:15:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:15:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:15:43,533 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:15:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:15:43,534 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 07:15:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 07:15:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 07:15:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 07:15:43,535 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 07:15:43,535 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 07:15:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:15:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:15:43,536 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:15:43,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:15:43,537 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 07:15:43,679 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:15:43,680 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:15:44,149 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:15:44,445 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:15:44,446 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 07:15:44,450 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:15:44 BoogieIcfgContainer [2023-08-04 07:15:44,450 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:15:44,452 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:15:44,452 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:15:44,455 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:15:44,456 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:15:42" (1/3) ... [2023-08-04 07:15:44,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a8560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:15:44, skipping insertion in model container [2023-08-04 07:15:44,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:15:43" (2/3) ... [2023-08-04 07:15:44,457 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@188a8560 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:15:44, skipping insertion in model container [2023-08-04 07:15:44,457 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:15:44" (3/3) ... [2023-08-04 07:15:44,458 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe025_power_bound2.i [2023-08-04 07:15:44,466 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:15:44,474 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:15:44,474 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-04 07:15:44,474 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:15:44,545 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:15:44,581 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 07:15:44,738 INFO L124 PetriNetUnfolderBase]: 30/469 cut-off events. [2023-08-04 07:15:44,739 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:44,746 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 469 events. 30/469 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1993 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-08-04 07:15:44,746 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 07:15:44,754 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 149 places, 147 transitions, 307 flow [2023-08-04 07:15:44,758 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:15:44,768 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 149 places, 147 transitions, 307 flow [2023-08-04 07:15:44,772 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 149 places, 147 transitions, 307 flow [2023-08-04 07:15:44,772 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 149 places, 147 transitions, 307 flow [2023-08-04 07:15:44,841 INFO L124 PetriNetUnfolderBase]: 30/468 cut-off events. [2023-08-04 07:15:44,841 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:44,842 INFO L83 FinitePrefix]: Finished finitePrefix Result has 492 conditions, 468 events. 30/468 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1985 event pairs, 0 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 288. Up to 16 conditions per place. [2023-08-04 07:15:44,846 INFO L119 LiptonReduction]: Number of co-enabled transitions 2652 [2023-08-04 07:15:53,845 INFO L134 LiptonReduction]: Checked pairs total: 7637 [2023-08-04 07:15:53,845 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-04 07:15:53,854 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:15:53,857 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;@4462bd34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:15:53,858 INFO L358 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2023-08-04 07:15:53,860 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:15:53,860 INFO L124 PetriNetUnfolderBase]: 0/12 cut-off events. [2023-08-04 07:15:53,860 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:53,860 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:15:53,860 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:15:53,861 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 07:15:53,863 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:15:53,863 INFO L85 PathProgramCache]: Analyzing trace with hash 1025678581, now seen corresponding path program 1 times [2023-08-04 07:15:53,869 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:15:53,869 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056433295] [2023-08-04 07:15:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:15:53,869 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:15:53,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:15:54,051 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 07:15:54,052 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:15:54,052 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056433295] [2023-08-04 07:15:54,053 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056433295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:15:54,053 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:15:54,053 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:15:54,054 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243746303] [2023-08-04 07:15:54,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:15:54,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:15:54,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:15:54,078 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:15:54,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:15:54,105 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 279 [2023-08-04 07:15:54,108 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 31 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 07:15:54,109 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:15:54,109 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 279 [2023-08-04 07:15:54,110 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:15:54,700 INFO L124 PetriNetUnfolderBase]: 2331/3633 cut-off events. [2023-08-04 07:15:54,700 INFO L125 PetriNetUnfolderBase]: For 16/16 co-relation queries the response was YES. [2023-08-04 07:15:54,707 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7321 conditions, 3633 events. 2331/3633 cut-off events. For 16/16 co-relation queries the response was YES. Maximal size of possible extension queue 177. Compared 19281 event pairs, 1440 based on Foata normal form. 0/2953 useless extension candidates. Maximal degree in co-relation 7308. Up to 3520 conditions per place. [2023-08-04 07:15:54,716 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 29 selfloop transitions, 2 changer transitions 1/35 dead transitions. [2023-08-04 07:15:54,716 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 35 transitions, 147 flow [2023-08-04 07:15:54,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:15:54,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:15:54,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 408 transitions. [2023-08-04 07:15:54,731 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874551971326165 [2023-08-04 07:15:54,731 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 408 transitions. [2023-08-04 07:15:54,732 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 408 transitions. [2023-08-04 07:15:54,735 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:15:54,736 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 408 transitions. [2023-08-04 07:15:54,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 136.0) internal successors, (408), 3 states have internal predecessors, (408), 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 07:15:54,744 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:15:54,745 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 279.0) internal successors, (1116), 4 states have internal predecessors, (1116), 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 07:15:54,746 INFO L175 Difference]: Start difference. First operand has 38 places, 31 transitions, 75 flow. Second operand 3 states and 408 transitions. [2023-08-04 07:15:54,747 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 35 transitions, 147 flow [2023-08-04 07:15:54,748 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 35 transitions, 147 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:15:54,749 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 83 flow [2023-08-04 07:15:54,750 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-04 07:15:54,752 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-04 07:15:54,752 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 83 flow [2023-08-04 07:15:54,753 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 126.66666666666667) internal successors, (380), 3 states have internal predecessors, (380), 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 07:15:54,753 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:15:54,753 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:15:54,753 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:15:54,753 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2023-08-04 07:15:54,759 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:15:54,759 INFO L85 PathProgramCache]: Analyzing trace with hash -20661530, now seen corresponding path program 1 times [2023-08-04 07:15:54,760 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:15:54,760 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1982015416] [2023-08-04 07:15:54,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:15:54,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:15:54,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:15:54,869 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 07:15:54,869 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:15:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1982015416] [2023-08-04 07:15:54,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1982015416] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:15:54,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753549143] [2023-08-04 07:15:54,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:15:54,870 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:15:54,870 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:15:54,873 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 07:15:54,886 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 07:15:54,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:15:54,981 INFO L262 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:15:54,984 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:15:55,010 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 07:15:55,010 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:15:55,025 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 07:15:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753549143] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:15:55,025 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:15:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:15:55,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740933164] [2023-08-04 07:15:55,026 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:15:55,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:15:55,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:15:55,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:15:55,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:15:55,041 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 279 [2023-08-04 07:15:55,042 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 83 flow. Second operand has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 07:15:55,042 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:15:55,042 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 279 [2023-08-04 07:15:55,042 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:15:55,061 INFO L124 PetriNetUnfolderBase]: 6/20 cut-off events. [2023-08-04 07:15:55,061 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 07:15:55,061 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58 conditions, 20 events. 6/20 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 4/24 useless extension candidates. Maximal degree in co-relation 51. Up to 14 conditions per place. [2023-08-04 07:15:55,061 INFO L140 encePairwiseOnDemand]: 276/279 looper letters, 0 selfloop transitions, 0 changer transitions 11/11 dead transitions. [2023-08-04 07:15:55,061 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 11 transitions, 53 flow [2023-08-04 07:15:55,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:15:55,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:15:55,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 508 transitions. [2023-08-04 07:15:55,063 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4551971326164875 [2023-08-04 07:15:55,063 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 508 transitions. [2023-08-04 07:15:55,063 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 508 transitions. [2023-08-04 07:15:55,063 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:15:55,063 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 508 transitions. [2023-08-04 07:15:55,064 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 127.0) internal successors, (508), 4 states have internal predecessors, (508), 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 07:15:55,066 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 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 07:15:55,066 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 279.0) internal successors, (1395), 5 states have internal predecessors, (1395), 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 07:15:55,066 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 83 flow. Second operand 4 states and 508 transitions. [2023-08-04 07:15:55,067 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 11 transitions, 53 flow [2023-08-04 07:15:55,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 11 transitions, 47 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 07:15:55,067 INFO L231 Difference]: Finished difference. Result has 15 places, 0 transitions, 0 flow [2023-08-04 07:15:55,067 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=279, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=12, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=15, PETRI_TRANSITIONS=0} [2023-08-04 07:15:55,068 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -23 predicate places. [2023-08-04 07:15:55,068 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 0 transitions, 0 flow [2023-08-04 07:15:55,068 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.4) internal successors, (632), 5 states have internal predecessors, (632), 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 07:15:55,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 5 remaining) [2023-08-04 07:15:55,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2023-08-04 07:15:55,070 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2023-08-04 07:15:55,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2023-08-04 07:15:55,071 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2023-08-04 07:15:55,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 07:15:55,280 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 07:15:55,281 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 07:15:55,282 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 07:15:55,286 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 07:15:55,314 INFO L124 PetriNetUnfolderBase]: 30/469 cut-off events. [2023-08-04 07:15:55,315 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:55,316 INFO L83 FinitePrefix]: Finished finitePrefix Result has 494 conditions, 469 events. 30/469 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1993 event pairs, 0 based on Foata normal form. 0/413 useless extension candidates. Maximal degree in co-relation 290. Up to 16 conditions per place. [2023-08-04 07:15:55,316 INFO L82 GeneralOperation]: Start removeDead. Operand has 150 places, 148 transitions, 311 flow [2023-08-04 07:15:55,317 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 124 places, 119 transitions, 253 flow [2023-08-04 07:15:55,317 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:15:55,317 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 124 places, 119 transitions, 253 flow [2023-08-04 07:15:55,317 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 124 places, 119 transitions, 253 flow [2023-08-04 07:15:55,317 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 124 places, 119 transitions, 253 flow [2023-08-04 07:15:55,332 INFO L124 PetriNetUnfolderBase]: 6/237 cut-off events. [2023-08-04 07:15:55,332 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:55,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 262 conditions, 237 events. 6/237 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 648 event pairs, 0 based on Foata normal form. 0/221 useless extension candidates. Maximal degree in co-relation 174. Up to 8 conditions per place. [2023-08-04 07:15:55,333 INFO L119 LiptonReduction]: Number of co-enabled transitions 1388 [2023-08-04 07:15:59,948 INFO L134 LiptonReduction]: Checked pairs total: 3951 [2023-08-04 07:15:59,948 INFO L136 LiptonReduction]: Total number of compositions: 98 [2023-08-04 07:15:59,949 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:15:59,950 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;@4462bd34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:15:59,950 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:15:59,952 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:15:59,952 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 07:15:59,952 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:15:59,952 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:15:59,953 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:15:59,953 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:15:59,953 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:15:59,953 INFO L85 PathProgramCache]: Analyzing trace with hash 340272595, now seen corresponding path program 1 times [2023-08-04 07:15:59,953 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:15:59,953 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1649947351] [2023-08-04 07:15:59,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:15:59,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:15:59,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:15:59,965 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:15:59,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:15:59,983 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:15:59,983 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:15:59,983 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 07:15:59,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 07:15:59,983 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 07:15:59,984 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 07:15:59,984 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 07:15:59,984 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 07:15:59,984 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:15:59,985 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:16:00,018 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:16:00,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 181 places, 173 transitions, 382 flow [2023-08-04 07:16:00,117 INFO L124 PetriNetUnfolderBase]: 93/1404 cut-off events. [2023-08-04 07:16:00,118 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 07:16:00,121 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1502 conditions, 1404 events. 93/1404 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9560 event pairs, 0 based on Foata normal form. 0/1233 useless extension candidates. Maximal degree in co-relation 1027. Up to 54 conditions per place. [2023-08-04 07:16:00,121 INFO L82 GeneralOperation]: Start removeDead. Operand has 181 places, 173 transitions, 382 flow [2023-08-04 07:16:00,125 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 180 places, 172 transitions, 376 flow [2023-08-04 07:16:00,125 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:16:00,125 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 180 places, 172 transitions, 376 flow [2023-08-04 07:16:00,125 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 180 places, 172 transitions, 376 flow [2023-08-04 07:16:00,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 180 places, 172 transitions, 376 flow [2023-08-04 07:16:00,250 INFO L124 PetriNetUnfolderBase]: 93/1403 cut-off events. [2023-08-04 07:16:00,250 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 07:16:00,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1499 conditions, 1403 events. 93/1403 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9544 event pairs, 0 based on Foata normal form. 0/1232 useless extension candidates. Maximal degree in co-relation 1024. Up to 54 conditions per place. [2023-08-04 07:16:00,270 INFO L119 LiptonReduction]: Number of co-enabled transitions 6400 [2023-08-04 07:16:11,807 INFO L134 LiptonReduction]: Checked pairs total: 21271 [2023-08-04 07:16:11,807 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-04 07:16:11,808 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:16:11,809 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;@4462bd34, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:16:11,809 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-04 07:16:11,811 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:16:11,811 INFO L124 PetriNetUnfolderBase]: 0/17 cut-off events. [2023-08-04 07:16:11,811 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:16:11,811 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:16:11,811 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:16:11,811 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err1ASSERT_VIOLATIONERROR_FUNCTION (and 4 more)] === [2023-08-04 07:16:11,811 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:16:11,811 INFO L85 PathProgramCache]: Analyzing trace with hash 1439878370, now seen corresponding path program 1 times [2023-08-04 07:16:11,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:16:11,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313574414] [2023-08-04 07:16:11,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:16:11,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:16:11,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:16:11,857 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 07:16:11,857 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:16:11,858 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313574414] [2023-08-04 07:16:11,858 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1313574414] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:16:11,858 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:16:11,858 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:16:11,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374189758] [2023-08-04 07:16:11,858 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:16:11,859 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:16:11,859 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:16:11,859 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:16:11,859 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:16:11,867 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 139 out of 311 [2023-08-04 07:16:11,868 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 50 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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 07:16:11,868 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:16:11,868 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 139 of 311 [2023-08-04 07:16:11,868 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:18:13,777 INFO L124 PetriNetUnfolderBase]: 694950/884301 cut-off events. [2023-08-04 07:18:13,777 INFO L125 PetriNetUnfolderBase]: For 15804/15804 co-relation queries the response was YES. [2023-08-04 07:18:16,006 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1767635 conditions, 884301 events. 694950/884301 cut-off events. For 15804/15804 co-relation queries the response was YES. Maximal size of possible extension queue 19427. Compared 5779905 event pairs, 567528 based on Foata normal form. 0/737352 useless extension candidates. Maximal degree in co-relation 380703. Up to 864847 conditions per place.