/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/goblint-regression_13-privatized_04-priv_multi_true_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:29:51,355 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:29:51,436 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:29:51,443 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:29:51,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:29:51,444 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:29:51,445 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:29:51,473 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:29:51,473 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:29:51,477 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:29:51,477 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:29:51,477 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:29:51,478 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:29:51,480 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:29:51,480 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:29:51,480 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:29:51,480 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:29:51,480 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:29:51,481 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:29:51,481 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:29:51,481 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:29:51,481 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:29:51,482 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:29:51,482 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:29:51,482 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:29:51,483 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:29:51,483 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:29:51,484 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:29:51,484 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:29:51,484 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:29:51,485 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:29:51,485 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:29:51,485 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:29:51,486 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:29:51,487 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:29:51,487 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:29:51,717 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:29:51,735 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:29:51,737 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:29:51,738 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:29:51,738 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:29:51,739 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_04-priv_multi_true_bound2.i [2023-08-04 04:29:52,994 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:29:53,272 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:29:53,275 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_04-priv_multi_true_bound2.i [2023-08-04 04:29:53,295 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3495dc2d5/7250cd67067048448c99bd04918f2f0b/FLAG61dfd6f76 [2023-08-04 04:29:53,307 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3495dc2d5/7250cd67067048448c99bd04918f2f0b [2023-08-04 04:29:53,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:29:53,311 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:29:53,312 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:29:53,312 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:29:53,315 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:29:53,316 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,317 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f6c0b99 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53, skipping insertion in model container [2023-08-04 04:29:53,317 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,369 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:29:53,510 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_04-priv_multi_true_bound2.i[1087,1100] [2023-08-04 04:29:53,719 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:29:53,730 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:29:53,745 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/goblint-regression_13-privatized_04-priv_multi_true_bound2.i[1087,1100] [2023-08-04 04:29:53,760 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [231] [2023-08-04 04:29:53,762 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [232] [2023-08-04 04:29:53,786 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:29:53,826 WARN L667 CHandler]: The function sleep is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:29:53,831 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:29:53,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53 WrapperNode [2023-08-04 04:29:53,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:29:53,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:29:53,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:29:53,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:29:53,839 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,857 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,881 INFO L138 Inliner]: procedures = 271, calls = 45, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 129 [2023-08-04 04:29:53,881 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:29:53,882 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:29:53,882 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:29:53,882 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:29:53,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,890 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,895 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,895 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,908 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,917 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,919 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,925 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:29:53,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:29:53,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:29:53,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:29:53,926 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (1/1) ... [2023-08-04 04:29:53,932 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:29:53,945 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:29:54,161 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 04:29:54,163 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 04:29:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure sleep [2023-08-04 04:29:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:29:54,192 INFO L130 BoogieDeclarations]: Found specification of procedure generate [2023-08-04 04:29:54,192 INFO L138 BoogieDeclarations]: Found implementation of procedure generate [2023-08-04 04:29:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:29:54,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:29:54,194 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:29:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:29:54,195 INFO L130 BoogieDeclarations]: Found specification of procedure dispose [2023-08-04 04:29:54,195 INFO L138 BoogieDeclarations]: Found implementation of procedure dispose [2023-08-04 04:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure process [2023-08-04 04:29:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure process [2023-08-04 04:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:29:54,196 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:29:54,196 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:29:54,198 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 04:29:54,433 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:29:54,435 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:29:54,684 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:29:54,692 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:29:54,692 INFO L302 CfgBuilder]: Removed 7 assume(true) statements. [2023-08-04 04:29:54,694 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:29:54 BoogieIcfgContainer [2023-08-04 04:29:54,694 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:29:54,696 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:29:54,696 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:29:54,699 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:29:54,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:29:53" (1/3) ... [2023-08-04 04:29:54,700 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a5caae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:29:54, skipping insertion in model container [2023-08-04 04:29:54,700 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:29:53" (2/3) ... [2023-08-04 04:29:54,701 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38a5caae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:29:54, skipping insertion in model container [2023-08-04 04:29:54,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:29:54" (3/3) ... [2023-08-04 04:29:54,702 INFO L112 eAbstractionObserver]: Analyzing ICFG goblint-regression_13-privatized_04-priv_multi_true_bound2.i [2023-08-04 04:29:54,709 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:29:54,718 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:29:54,718 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 04:29:54,719 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:29:54,784 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:29:54,814 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:54,954 INFO L124 PetriNetUnfolderBase]: 62/597 cut-off events. [2023-08-04 04:29:54,955 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:29:54,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 597 events. 62/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3283 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 326. Up to 16 conditions per place. [2023-08-04 04:29:54,969 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:54,979 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:54,983 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:29:54,997 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:55,004 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:55,005 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:29:55,083 INFO L124 PetriNetUnfolderBase]: 62/597 cut-off events. [2023-08-04 04:29:55,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:29:55,087 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 597 events. 62/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3283 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 326. Up to 16 conditions per place. [2023-08-04 04:29:55,104 INFO L119 LiptonReduction]: Number of co-enabled transitions 11146 [2023-08-04 04:29:58,674 INFO L134 LiptonReduction]: Checked pairs total: 23558 [2023-08-04 04:29:58,674 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 04:29:58,686 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:29:58,691 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;@64bffda1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:29:58,692 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:29:58,697 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:29:58,698 INFO L124 PetriNetUnfolderBase]: 1/34 cut-off events. [2023-08-04 04:29:58,698 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:29:58,698 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:29:58,699 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:29:58,699 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [disposeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, disposeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:29:58,703 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:29:58,703 INFO L85 PathProgramCache]: Analyzing trace with hash 1728666789, now seen corresponding path program 1 times [2023-08-04 04:29:58,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:29:58,712 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234531058] [2023-08-04 04:29:58,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:29:58,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:29:58,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:29:59,089 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 04:29:59,090 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:29:59,090 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234531058] [2023-08-04 04:29:59,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234531058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:29:59,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:29:59,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:29:59,092 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26103540] [2023-08-04 04:29:59,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:29:59,099 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:29:59,105 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:29:59,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:29:59,126 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:29:59,148 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-04 04:29:59,153 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 56 transitions, 127 flow. Second operand has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 04:29:59,153 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:29:59,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-04 04:29:59,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:00,719 INFO L124 PetriNetUnfolderBase]: 11806/17619 cut-off events. [2023-08-04 04:30:00,719 INFO L125 PetriNetUnfolderBase]: For 35/35 co-relation queries the response was YES. [2023-08-04 04:30:00,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 33544 conditions, 17619 events. 11806/17619 cut-off events. For 35/35 co-relation queries the response was YES. Maximal size of possible extension queue 545. Compared 105570 event pairs, 5615 based on Foata normal form. 350/14063 useless extension candidates. Maximal degree in co-relation 33521. Up to 15756 conditions per place. [2023-08-04 04:30:00,828 INFO L140 encePairwiseOnDemand]: 308/314 looper letters, 45 selfloop transitions, 2 changer transitions 3/59 dead transitions. [2023-08-04 04:30:00,828 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 59 transitions, 229 flow [2023-08-04 04:30:00,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:00,835 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:00,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 511 transitions. [2023-08-04 04:30:00,847 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5424628450106157 [2023-08-04 04:30:00,848 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 511 transitions. [2023-08-04 04:30:00,848 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 511 transitions. [2023-08-04 04:30:00,850 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:00,852 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 511 transitions. [2023-08-04 04:30:00,857 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 170.33333333333334) internal successors, (511), 3 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:30:00,861 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:00,862 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:00,864 INFO L175 Difference]: Start difference. First operand has 56 places, 56 transitions, 127 flow. Second operand 3 states and 511 transitions. [2023-08-04 04:30:00,865 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 56 places, 59 transitions, 229 flow [2023-08-04 04:30:00,867 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 59 transitions, 229 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:30:00,869 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 121 flow [2023-08-04 04:30:00,870 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=121, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-04 04:30:00,873 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-08-04 04:30:00,874 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 121 flow [2023-08-04 04:30:00,874 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 155.33333333333334) internal successors, (466), 3 states have internal predecessors, (466), 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 04:30:00,874 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:00,874 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:00,875 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:30:00,875 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [disposeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, disposeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:00,875 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:00,875 INFO L85 PathProgramCache]: Analyzing trace with hash 767239363, now seen corresponding path program 1 times [2023-08-04 04:30:00,876 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:00,876 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714168859] [2023-08-04 04:30:00,876 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:00,876 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:00,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:00,975 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 04:30:00,975 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:00,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714168859] [2023-08-04 04:30:00,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714168859] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:00,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742198838] [2023-08-04 04:30:00,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:00,976 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:00,976 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:00,979 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 04:30:01,003 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 04:30:01,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:01,091 INFO L262 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 04:30:01,095 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:01,107 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:30:01,107 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:30:01,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742198838] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:01,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:30:01,107 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:30:01,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940093333] [2023-08-04 04:30:01,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:01,109 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:01,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:01,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:01,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:30:01,119 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-04 04:30:01,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 121 flow. Second operand has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 04:30:01,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:01,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-04 04:30:01,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:02,237 INFO L124 PetriNetUnfolderBase]: 11031/15409 cut-off events. [2023-08-04 04:30:02,237 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 04:30:02,266 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30232 conditions, 15409 events. 11031/15409 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 529. Compared 84193 event pairs, 5451 based on Foata normal form. 0/11905 useless extension candidates. Maximal degree in co-relation 30216. Up to 14499 conditions per place. [2023-08-04 04:30:02,444 INFO L140 encePairwiseOnDemand]: 311/314 looper letters, 54 selfloop transitions, 2 changer transitions 1/66 dead transitions. [2023-08-04 04:30:02,446 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 66 transitions, 265 flow [2023-08-04 04:30:02,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:02,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:02,454 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 517 transitions. [2023-08-04 04:30:02,455 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5488322717622081 [2023-08-04 04:30:02,456 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 517 transitions. [2023-08-04 04:30:02,456 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 517 transitions. [2023-08-04 04:30:02,456 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:02,456 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 517 transitions. [2023-08-04 04:30:02,459 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 172.33333333333334) internal successors, (517), 3 states have internal predecessors, (517), 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 04:30:02,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:02,463 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:02,463 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 121 flow. Second operand 3 states and 517 transitions. [2023-08-04 04:30:02,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 66 transitions, 265 flow [2023-08-04 04:30:02,464 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 66 transitions, 261 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:30:02,465 INFO L231 Difference]: Finished difference. Result has 56 places, 51 transitions, 125 flow [2023-08-04 04:30:02,465 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=117, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=56, PETRI_TRANSITIONS=51} [2023-08-04 04:30:02,467 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 0 predicate places. [2023-08-04 04:30:02,467 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 51 transitions, 125 flow [2023-08-04 04:30:02,468 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 04:30:02,468 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:02,468 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:02,479 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 04:30:02,679 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 04:30:02,679 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [disposeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, disposeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:02,680 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:02,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1627735750, now seen corresponding path program 1 times [2023-08-04 04:30:02,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:02,681 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061786901] [2023-08-04 04:30:02,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:02,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:02,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:02,796 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:30:02,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2061786901] [2023-08-04 04:30:02,799 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2061786901] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:02,799 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2009435874] [2023-08-04 04:30:02,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:02,799 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:02,799 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:02,802 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:30:02,804 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:30:02,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:02,913 INFO L262 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 04:30:02,914 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:02,921 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 04:30:02,922 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 04:30:02,922 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2009435874] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:02,922 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 04:30:02,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 04:30:02,922 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141518916] [2023-08-04 04:30:02,922 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:02,923 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:02,923 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:02,924 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:02,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:30:02,934 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 153 out of 314 [2023-08-04 04:30:02,935 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 51 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 04:30:02,935 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:02,935 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 153 of 314 [2023-08-04 04:30:02,935 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:03,893 INFO L124 PetriNetUnfolderBase]: 10226/14378 cut-off events. [2023-08-04 04:30:03,894 INFO L125 PetriNetUnfolderBase]: For 96/96 co-relation queries the response was YES. [2023-08-04 04:30:03,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 28221 conditions, 14378 events. 10226/14378 cut-off events. For 96/96 co-relation queries the response was YES. Maximal size of possible extension queue 499. Compared 77725 event pairs, 5160 based on Foata normal form. 0/11149 useless extension candidates. Maximal degree in co-relation 28205. Up to 12234 conditions per place. [2023-08-04 04:30:03,968 INFO L140 encePairwiseOnDemand]: 311/314 looper letters, 62 selfloop transitions, 2 changer transitions 0/73 dead transitions. [2023-08-04 04:30:03,968 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 73 transitions, 297 flow [2023-08-04 04:30:03,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:30:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:30:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 524 transitions. [2023-08-04 04:30:03,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5562632696390658 [2023-08-04 04:30:03,971 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 524 transitions. [2023-08-04 04:30:03,971 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 524 transitions. [2023-08-04 04:30:03,971 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:03,971 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 524 transitions. [2023-08-04 04:30:03,973 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 174.66666666666666) internal successors, (524), 3 states have internal predecessors, (524), 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 04:30:03,974 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:03,975 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 314.0) internal successors, (1256), 4 states have internal predecessors, (1256), 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 04:30:03,975 INFO L175 Difference]: Start difference. First operand has 56 places, 51 transitions, 125 flow. Second operand 3 states and 524 transitions. [2023-08-04 04:30:03,975 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 73 transitions, 297 flow [2023-08-04 04:30:03,976 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 73 transitions, 293 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 04:30:03,977 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 129 flow [2023-08-04 04:30:03,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=49, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=129, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2023-08-04 04:30:03,979 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, 1 predicate places. [2023-08-04 04:30:03,979 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 129 flow [2023-08-04 04:30:03,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 157.33333333333334) internal successors, (472), 3 states have internal predecessors, (472), 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 04:30:03,980 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:03,980 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:03,992 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-04 04:30:04,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 04:30:04,193 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting disposeErr0ASSERT_VIOLATIONERROR_FUNCTION === [disposeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, disposeErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 04:30:04,193 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:04,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1430646673, now seen corresponding path program 1 times [2023-08-04 04:30:04,193 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:04,193 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1867600706] [2023-08-04 04:30:04,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:04,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:04,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:04,266 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:30:04,266 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1867600706] [2023-08-04 04:30:04,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1867600706] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:30:04,266 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [351356355] [2023-08-04 04:30:04,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:04,267 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:04,267 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:30:04,268 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:30:04,292 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 04:30:04,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:04,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:30:04,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:30:04,424 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:30:04,424 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:30:04,439 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-04 04:30:04,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [351356355] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:30:04,440 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:30:04,440 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:30:04,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660371381] [2023-08-04 04:30:04,440 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:30:04,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:30:04,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:04,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:30:04,441 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:30:04,455 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 152 out of 314 [2023-08-04 04:30:04,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 129 flow. Second operand has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 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 04:30:04,457 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:04,457 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 152 of 314 [2023-08-04 04:30:04,457 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:30:04,479 INFO L124 PetriNetUnfolderBase]: 11/29 cut-off events. [2023-08-04 04:30:04,483 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:04,483 INFO L83 FinitePrefix]: Finished finitePrefix Result has 73 conditions, 29 events. 11/29 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 57 event pairs, 0 based on Foata normal form. 5/31 useless extension candidates. Maximal degree in co-relation 64. Up to 20 conditions per place. [2023-08-04 04:30:04,484 INFO L140 encePairwiseOnDemand]: 311/314 looper letters, 0 selfloop transitions, 0 changer transitions 16/16 dead transitions. [2023-08-04 04:30:04,485 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 16 transitions, 67 flow [2023-08-04 04:30:04,485 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:30:04,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:30:04,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 624 transitions. [2023-08-04 04:30:04,487 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4968152866242038 [2023-08-04 04:30:04,487 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 624 transitions. [2023-08-04 04:30:04,487 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 624 transitions. [2023-08-04 04:30:04,487 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:30:04,487 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 624 transitions. [2023-08-04 04:30:04,489 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 156.0) internal successors, (624), 4 states have internal predecessors, (624), 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 04:30:04,491 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 04:30:04,492 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 314.0) internal successors, (1570), 5 states have internal predecessors, (1570), 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 04:30:04,492 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 129 flow. Second operand 4 states and 624 transitions. [2023-08-04 04:30:04,492 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 16 transitions, 67 flow [2023-08-04 04:30:04,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 20 places, 16 transitions, 65 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:30:04,492 INFO L231 Difference]: Finished difference. Result has 20 places, 0 transitions, 0 flow [2023-08-04 04:30:04,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=314, PETRI_DIFFERENCE_MINUEND_FLOW=23, PETRI_DIFFERENCE_MINUEND_PLACES=17, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=10, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=10, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=20, PETRI_TRANSITIONS=0} [2023-08-04 04:30:04,494 INFO L281 CegarLoopForPetriNet]: 56 programPoint places, -36 predicate places. [2023-08-04 04:30:04,495 INFO L495 AbstractCegarLoop]: Abstraction has has 20 places, 0 transitions, 0 flow [2023-08-04 04:30:04,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 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 04:30:04,497 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 04:30:04,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 04:30:04,498 INFO L805 garLoopResultBuilder]: Registering result SAFE for location disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 04:30:04,504 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-04 04:30:04,704 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:30:04,705 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 04:30:04,706 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 04:30:04,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,760 INFO L124 PetriNetUnfolderBase]: 62/597 cut-off events. [2023-08-04 04:30:04,761 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:04,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 597 events. 62/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3283 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 326. Up to 16 conditions per place. [2023-08-04 04:30:04,764 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,767 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,767 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:30:04,767 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,767 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,767 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 173 transitions, 361 flow [2023-08-04 04:30:04,816 INFO L124 PetriNetUnfolderBase]: 62/597 cut-off events. [2023-08-04 04:30:04,816 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:04,819 INFO L83 FinitePrefix]: Finished finitePrefix Result has 622 conditions, 597 events. 62/597 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 3283 event pairs, 0 based on Foata normal form. 0/509 useless extension candidates. Maximal degree in co-relation 326. Up to 16 conditions per place. [2023-08-04 04:30:04,832 INFO L119 LiptonReduction]: Number of co-enabled transitions 11146 [2023-08-04 04:30:08,070 INFO L134 LiptonReduction]: Checked pairs total: 23558 [2023-08-04 04:30:08,071 INFO L136 LiptonReduction]: Total number of compositions: 141 [2023-08-04 04:30:08,072 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:30:08,073 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;@64bffda1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:08,073 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 04:30:08,075 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:08,075 INFO L124 PetriNetUnfolderBase]: 0/30 cut-off events. [2023-08-04 04:30:08,076 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:30:08,076 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:08,076 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 04:30:08,076 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 04:30:08,076 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash -1845300695, now seen corresponding path program 1 times [2023-08-04 04:30:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85162066] [2023-08-04 04:30:08,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:30:08,100 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:30:08,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:30:08,127 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:30:08,128 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:30:08,128 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 04:30:08,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 04:30:08,128 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 04:30:08,128 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:30:08,128 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:30:08,129 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 04:30:08,129 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:30:08,129 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:30:08,156 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 04:30:08,159 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,409 INFO L124 PetriNetUnfolderBase]: 214/1957 cut-off events. [2023-08-04 04:30:08,409 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 04:30:08,426 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 1957 events. 214/1957 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 15099 event pairs, 0 based on Foata normal form. 0/1659 useless extension candidates. Maximal degree in co-relation 1373. Up to 54 conditions per place. [2023-08-04 04:30:08,426 INFO L82 GeneralOperation]: Start removeDead. Operand has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,435 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,435 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:30:08,435 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,436 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,436 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 235 places, 246 transitions, 528 flow [2023-08-04 04:30:08,628 INFO L124 PetriNetUnfolderBase]: 214/1957 cut-off events. [2023-08-04 04:30:08,628 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 04:30:08,650 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2055 conditions, 1957 events. 214/1957 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 52. Compared 15099 event pairs, 0 based on Foata normal form. 0/1659 useless extension candidates. Maximal degree in co-relation 1373. Up to 54 conditions per place. [2023-08-04 04:30:08,709 INFO L119 LiptonReduction]: Number of co-enabled transitions 32484 [2023-08-04 04:30:12,158 INFO L134 LiptonReduction]: Checked pairs total: 78217 [2023-08-04 04:30:12,158 INFO L136 LiptonReduction]: Total number of compositions: 189 [2023-08-04 04:30:12,160 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:30:12,160 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;@64bffda1, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:30:12,160 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:30:12,163 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:30:12,164 INFO L124 PetriNetUnfolderBase]: 1/31 cut-off events. [2023-08-04 04:30:12,164 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:30:12,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:30:12,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:30:12,164 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [disposeErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, disposeErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:30:12,164 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:30:12,164 INFO L85 PathProgramCache]: Analyzing trace with hash -790302216, now seen corresponding path program 1 times [2023-08-04 04:30:12,164 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:30:12,165 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048333237] [2023-08-04 04:30:12,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:30:12,165 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:30:12,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:30:12,223 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 04:30:12,224 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:30:12,224 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048333237] [2023-08-04 04:30:12,224 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048333237] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:30:12,224 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:30:12,224 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:30:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941438227] [2023-08-04 04:30:12,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:30:12,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:30:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:30:12,226 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:30:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:30:12,236 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 216 out of 435 [2023-08-04 04:30:12,237 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 95 places, 94 transitions, 224 flow. Second operand has 3 states, 3 states have (on average 218.33333333333334) internal successors, (655), 3 states have internal predecessors, (655), 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 04:30:12,237 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:30:12,237 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 216 of 435 [2023-08-04 04:30:12,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand