/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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:24:27,543 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:24:27,600 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:24:27,604 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:24:27,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:24:27,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:24:27,605 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:24:27,634 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:24:27,635 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:24:27,637 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:24:27,638 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:24:27,638 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:24:27,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:24:27,639 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:24:27,639 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:24:27,639 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:24:27,639 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:24:27,639 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:24:27,640 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:24:27,641 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:24:27,641 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:24:27,641 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:24:27,641 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:24:27,641 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:24:27,642 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:24:27,642 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:24:27,642 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:24:27,642 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:24:27,643 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:24:27,643 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:24:27,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:24:27,852 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:24:27,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:24:27,855 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:24:27,855 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:24:27,856 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 07:24:28,902 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:24:29,083 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:24:29,084 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 07:24:29,100 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e7e20fb2/a45634f299a8420c81ea1f9bc6222102/FLAG0cb30afd4 [2023-08-04 07:24:29,110 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3e7e20fb2/a45634f299a8420c81ea1f9bc6222102 [2023-08-04 07:24:29,114 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:24:29,115 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:24:29,121 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:24:29,121 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:24:29,123 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:24:29,124 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,125 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f51ac37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29, skipping insertion in model container [2023-08-04 07:24:29,125 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,160 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:24:29,275 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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-04 07:24:29,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:24:29,422 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:24:29,429 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_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i[970,983] [2023-08-04 07:24:29,434 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:24:29,441 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:24:29,461 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:24:29,478 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:24:29,478 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:24:29,482 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:24:29,483 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29 WrapperNode [2023-08-04 07:24:29,483 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:24:29,484 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:24:29,484 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:24:29,484 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:24:29,488 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,500 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,516 INFO L138 Inliner]: procedures = 175, calls = 41, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 144 [2023-08-04 07:24:29,516 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:24:29,517 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:24:29,517 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:24:29,517 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:24:29,522 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,522 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,525 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,525 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,530 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,532 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,533 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,534 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,535 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:24:29,536 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:24:29,536 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:24:29,536 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:24:29,537 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (1/1) ... [2023-08-04 07:24:29,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:24:29,547 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:24:29,560 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 07:24:29,564 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 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 07:24:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 07:24:29,581 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 07:24:29,581 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 07:24:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:24:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:24:29,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:24:29,582 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:24:29,583 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 07:24:29,686 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:24:29,687 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:24:29,869 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:24:29,961 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:24:29,962 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 07:24:29,963 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:24:29 BoogieIcfgContainer [2023-08-04 07:24:29,963 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:24:29,964 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:24:29,964 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:24:29,966 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:24:29,966 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:24:29" (1/3) ... [2023-08-04 07:24:29,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d640939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:24:29, skipping insertion in model container [2023-08-04 07:24:29,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:24:29" (2/3) ... [2023-08-04 07:24:29,967 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d640939 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:24:29, skipping insertion in model container [2023-08-04 07:24:29,967 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:24:29" (3/3) ... [2023-08-04 07:24:29,968 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe029_power.oepc_pso.oepc_rmo.oepc_bound2.i [2023-08-04 07:24:29,976 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:24:29,982 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:24:29,982 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 07:24:29,982 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:24:30,019 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:24:30,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,105 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-04 07:24:30,105 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:30,108 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-04 07:24:30,109 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,111 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,113 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:24:30,118 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,120 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:30,147 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-04 07:24:30,147 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:30,148 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-04 07:24:30,149 INFO L119 LiptonReduction]: Number of co-enabled transitions 1462 [2023-08-04 07:24:32,698 INFO L134 LiptonReduction]: Checked pairs total: 3929 [2023-08-04 07:24:32,698 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-04 07:24:32,712 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:24:32,717 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;@2b922e73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:24:32,718 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:24:32,721 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:24:32,721 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 07:24:32,721 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:32,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:32,721 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 07:24:32,722 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:24:32,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:32,725 INFO L85 PathProgramCache]: Analyzing trace with hash 14011630, now seen corresponding path program 1 times [2023-08-04 07:24:32,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:32,731 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413285427] [2023-08-04 07:24:32,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:32,731 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:32,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:33,012 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 07:24:33,013 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:33,013 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413285427] [2023-08-04 07:24:33,013 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413285427] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:33,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:24:33,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 07:24:33,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251083224] [2023-08-04 07:24:33,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:33,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:33,023 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:33,040 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:33,040 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:24:33,047 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 86 out of 187 [2023-08-04 07:24:33,049 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 26 transitions, 62 flow. Second operand has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 07:24:33,049 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:33,049 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 86 of 187 [2023-08-04 07:24:33,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:33,174 INFO L124 PetriNetUnfolderBase]: 258/556 cut-off events. [2023-08-04 07:24:33,174 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 07:24:33,178 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1067 conditions, 556 events. 258/556 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2811 event pairs, 48 based on Foata normal form. 25/497 useless extension candidates. Maximal degree in co-relation 906. Up to 352 conditions per place. [2023-08-04 07:24:33,182 INFO L140 encePairwiseOnDemand]: 183/187 looper letters, 28 selfloop transitions, 2 changer transitions 7/39 dead transitions. [2023-08-04 07:24:33,182 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 39 transitions, 161 flow [2023-08-04 07:24:33,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:33,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:33,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 296 transitions. [2023-08-04 07:24:33,200 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5276292335115864 [2023-08-04 07:24:33,200 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 296 transitions. [2023-08-04 07:24:33,201 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 296 transitions. [2023-08-04 07:24:33,203 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:33,205 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 296 transitions. [2023-08-04 07:24:33,209 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 98.66666666666667) internal successors, (296), 3 states have internal predecessors, (296), 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 07:24:33,213 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,213 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,214 INFO L175 Difference]: Start difference. First operand has 30 places, 26 transitions, 62 flow. Second operand 3 states and 296 transitions. [2023-08-04 07:24:33,215 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 39 transitions, 161 flow [2023-08-04 07:24:33,217 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 39 transitions, 161 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:24:33,218 INFO L231 Difference]: Finished difference. Result has 31 places, 20 transitions, 50 flow [2023-08-04 07:24:33,220 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=58, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=50, PETRI_PLACES=31, PETRI_TRANSITIONS=20} [2023-08-04 07:24:33,223 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, 1 predicate places. [2023-08-04 07:24:33,223 INFO L495 AbstractCegarLoop]: Abstraction has has 31 places, 20 transitions, 50 flow [2023-08-04 07:24:33,224 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 87.33333333333333) internal successors, (262), 3 states have internal predecessors, (262), 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 07:24:33,224 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:33,224 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:24:33,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:24:33,224 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:24:33,230 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:33,230 INFO L85 PathProgramCache]: Analyzing trace with hash 586256045, now seen corresponding path program 1 times [2023-08-04 07:24:33,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:33,230 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1247368312] [2023-08-04 07:24:33,230 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:33,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:33,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:33,299 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 07:24:33,299 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:33,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1247368312] [2023-08-04 07:24:33,299 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1247368312] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:33,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:24:33,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:24:33,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9311878] [2023-08-04 07:24:33,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:33,301 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:33,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:33,302 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:33,302 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:24:33,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-04 07:24:33,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 20 transitions, 50 flow. Second operand has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 07:24:33,313 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:33,313 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-04 07:24:33,313 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:33,384 INFO L124 PetriNetUnfolderBase]: 180/355 cut-off events. [2023-08-04 07:24:33,385 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 07:24:33,386 INFO L83 FinitePrefix]: Finished finitePrefix Result has 738 conditions, 355 events. 180/355 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1480 event pairs, 72 based on Foata normal form. 0/327 useless extension candidates. Maximal degree in co-relation 724. Up to 325 conditions per place. [2023-08-04 07:24:33,388 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 19 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2023-08-04 07:24:33,388 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 29 places, 24 transitions, 104 flow [2023-08-04 07:24:33,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:33,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:33,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 272 transitions. [2023-08-04 07:24:33,391 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2023-08-04 07:24:33,391 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 272 transitions. [2023-08-04 07:24:33,391 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 272 transitions. [2023-08-04 07:24:33,391 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:33,392 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 272 transitions. [2023-08-04 07:24:33,392 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 90.66666666666667) internal successors, (272), 3 states have internal predecessors, (272), 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 07:24:33,395 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,396 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,396 INFO L175 Difference]: Start difference. First operand has 31 places, 20 transitions, 50 flow. Second operand 3 states and 272 transitions. [2023-08-04 07:24:33,397 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 29 places, 24 transitions, 104 flow [2023-08-04 07:24:33,399 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 24 transitions, 98 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:24:33,400 INFO L231 Difference]: Finished difference. Result has 28 places, 20 transitions, 54 flow [2023-08-04 07:24:33,401 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=28, PETRI_TRANSITIONS=20} [2023-08-04 07:24:33,402 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -2 predicate places. [2023-08-04 07:24:33,402 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 20 transitions, 54 flow [2023-08-04 07:24:33,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 85.0) internal successors, (255), 3 states have internal predecessors, (255), 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 07:24:33,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:33,402 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:24:33,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 07:24:33,403 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:24:33,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:33,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1076541382, now seen corresponding path program 1 times [2023-08-04 07:24:33,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:33,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1609252061] [2023-08-04 07:24:33,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:33,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:33,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:33,534 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 07:24:33,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:33,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1609252061] [2023-08-04 07:24:33,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1609252061] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:24:33,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1861593275] [2023-08-04 07:24:33,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:33,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:24:33,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:24:33,543 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 07:24:33,548 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 07:24:33,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:33,636 INFO L262 TraceCheckSpWp]: Trace formula consists of 154 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:24:33,639 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:24:33,652 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 07:24:33,652 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:24:33,655 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1861593275] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:33,655 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:24:33,655 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:24:33,655 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78196738] [2023-08-04 07:24:33,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:33,656 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:33,656 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:33,656 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:33,656 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:24:33,666 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 187 [2023-08-04 07:24:33,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 20 transitions, 54 flow. Second operand has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 07:24:33,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:33,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 187 [2023-08-04 07:24:33,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:33,736 INFO L124 PetriNetUnfolderBase]: 168/309 cut-off events. [2023-08-04 07:24:33,736 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 07:24:33,736 INFO L83 FinitePrefix]: Finished finitePrefix Result has 640 conditions, 309 events. 168/309 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 1164 event pairs, 118 based on Foata normal form. 0/293 useless extension candidates. Maximal degree in co-relation 625. Up to 261 conditions per place. [2023-08-04 07:24:33,738 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 22 selfloop transitions, 2 changer transitions 1/27 dead transitions. [2023-08-04 07:24:33,738 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 30 places, 27 transitions, 118 flow [2023-08-04 07:24:33,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:33,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:33,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 275 transitions. [2023-08-04 07:24:33,739 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.49019607843137253 [2023-08-04 07:24:33,739 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 275 transitions. [2023-08-04 07:24:33,739 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 275 transitions. [2023-08-04 07:24:33,740 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:33,740 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 275 transitions. [2023-08-04 07:24:33,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 91.66666666666667) internal successors, (275), 3 states have internal predecessors, (275), 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 07:24:33,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,742 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 187.0) internal successors, (748), 4 states have internal predecessors, (748), 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 07:24:33,742 INFO L175 Difference]: Start difference. First operand has 28 places, 20 transitions, 54 flow. Second operand 3 states and 275 transitions. [2023-08-04 07:24:33,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 30 places, 27 transitions, 118 flow [2023-08-04 07:24:33,743 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 28 places, 27 transitions, 114 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:24:33,743 INFO L231 Difference]: Finished difference. Result has 29 places, 20 transitions, 58 flow [2023-08-04 07:24:33,743 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=50, PETRI_DIFFERENCE_MINUEND_PLACES=26, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=58, PETRI_PLACES=29, PETRI_TRANSITIONS=20} [2023-08-04 07:24:33,744 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -1 predicate places. [2023-08-04 07:24:33,744 INFO L495 AbstractCegarLoop]: Abstraction has has 29 places, 20 transitions, 58 flow [2023-08-04 07:24:33,744 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 86.0) internal successors, (258), 3 states have internal predecessors, (258), 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 07:24:33,744 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:33,744 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:24:33,756 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 07:24:33,950 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:24:33,951 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:24:33,951 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:33,951 INFO L85 PathProgramCache]: Analyzing trace with hash -861882631, now seen corresponding path program 1 times [2023-08-04 07:24:33,951 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:33,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [382456921] [2023-08-04 07:24:33,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:33,952 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:33,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:34,041 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 07:24:34,042 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [382456921] [2023-08-04 07:24:34,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [382456921] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:24:34,042 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1319867574] [2023-08-04 07:24:34,042 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:34,042 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:24:34,042 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:24:34,057 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 07:24:34,059 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 07:24:34,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:34,141 INFO L262 TraceCheckSpWp]: Trace formula consists of 171 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:24:34,142 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:24:34,165 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 07:24:34,165 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:24:34,184 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 07:24:34,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1319867574] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:24:34,185 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:24:34,185 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:24:34,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036514561] [2023-08-04 07:24:34,185 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:24:34,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:24:34,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:34,187 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:24:34,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:24:34,201 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 82 out of 187 [2023-08-04 07:24:34,201 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 29 places, 20 transitions, 58 flow. Second operand has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 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 07:24:34,201 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:34,201 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 82 of 187 [2023-08-04 07:24:34,201 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:34,218 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 07:24:34,218 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-04 07:24:34,218 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54 conditions, 21 events. 6/21 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 31 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 47. Up to 14 conditions per place. [2023-08-04 07:24:34,218 INFO L140 encePairwiseOnDemand]: 184/187 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 07:24:34,218 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 12 transitions, 51 flow [2023-08-04 07:24:34,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:24:34,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:24:34,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 340 transitions. [2023-08-04 07:24:34,219 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45454545454545453 [2023-08-04 07:24:34,219 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 340 transitions. [2023-08-04 07:24:34,219 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 340 transitions. [2023-08-04 07:24:34,219 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:34,219 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 340 transitions. [2023-08-04 07:24:34,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 85.0) internal successors, (340), 4 states have internal predecessors, (340), 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 07:24:34,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 07:24:34,224 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 187.0) internal successors, (935), 5 states have internal predecessors, (935), 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 07:24:34,224 INFO L175 Difference]: Start difference. First operand has 29 places, 20 transitions, 58 flow. Second operand 4 states and 340 transitions. [2023-08-04 07:24:34,224 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 12 transitions, 51 flow [2023-08-04 07:24:34,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:24:34,226 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 07:24:34,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=187, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 07:24:34,227 INFO L281 CegarLoopForPetriNet]: 30 programPoint places, -13 predicate places. [2023-08-04 07:24:34,227 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 07:24:34,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 85.2) internal successors, (426), 5 states have internal predecessors, (426), 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 07:24:34,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 07:24:34,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 07:24:34,230 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 07:24:34,257 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 07:24:34,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 07:24:34,435 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2023-08-04 07:24:34,437 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 07:24:34,441 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:34,451 INFO L124 PetriNetUnfolderBase]: 14/215 cut-off events. [2023-08-04 07:24:34,451 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:34,452 INFO L83 FinitePrefix]: Finished finitePrefix Result has 227 conditions, 215 events. 14/215 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 595 event pairs, 0 based on Foata normal form. 0/190 useless extension candidates. Maximal degree in co-relation 128. Up to 8 conditions per place. [2023-08-04 07:24:34,452 INFO L82 GeneralOperation]: Start removeDead. Operand has 101 places, 100 transitions, 210 flow [2023-08-04 07:24:34,452 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 77 places, 73 transitions, 156 flow [2023-08-04 07:24:34,452 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:24:34,452 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 77 places, 73 transitions, 156 flow [2023-08-04 07:24:34,452 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 77 places, 73 transitions, 156 flow [2023-08-04 07:24:34,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 77 places, 73 transitions, 156 flow [2023-08-04 07:24:34,458 INFO L124 PetriNetUnfolderBase]: 2/107 cut-off events. [2023-08-04 07:24:34,458 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:34,458 INFO L83 FinitePrefix]: Finished finitePrefix Result has 119 conditions, 107 events. 2/107 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 154 event pairs, 0 based on Foata normal form. 0/102 useless extension candidates. Maximal degree in co-relation 74. Up to 4 conditions per place. [2023-08-04 07:24:34,458 INFO L119 LiptonReduction]: Number of co-enabled transitions 652 [2023-08-04 07:24:36,128 INFO L134 LiptonReduction]: Checked pairs total: 1541 [2023-08-04 07:24:36,128 INFO L136 LiptonReduction]: Total number of compositions: 60 [2023-08-04 07:24:36,129 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:24:36,129 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;@2b922e73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:24:36,129 INFO L358 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2023-08-04 07:24:36,131 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:24:36,131 INFO L124 PetriNetUnfolderBase]: 0/14 cut-off events. [2023-08-04 07:24:36,131 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:36,131 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:36,131 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 07:24:36,132 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 07:24:36,132 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:36,132 INFO L85 PathProgramCache]: Analyzing trace with hash 492101127, now seen corresponding path program 1 times [2023-08-04 07:24:36,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:36,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199087143] [2023-08-04 07:24:36,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:36,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:36,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:36,149 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 07:24:36,150 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:36,150 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199087143] [2023-08-04 07:24:36,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199087143] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:36,150 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:24:36,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:24:36,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873374614] [2023-08-04 07:24:36,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:36,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:36,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:36,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:36,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:24:36,157 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 83 out of 160 [2023-08-04 07:24:36,157 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 23 places, 18 transitions, 46 flow. Second operand has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 07:24:36,157 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:36,157 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 83 of 160 [2023-08-04 07:24:36,157 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:36,184 INFO L124 PetriNetUnfolderBase]: 59/142 cut-off events. [2023-08-04 07:24:36,184 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:36,184 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289 conditions, 142 events. 59/142 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 511 event pairs, 15 based on Foata normal form. 0/125 useless extension candidates. Maximal degree in co-relation 267. Up to 115 conditions per place. [2023-08-04 07:24:36,185 INFO L140 encePairwiseOnDemand]: 157/160 looper letters, 17 selfloop transitions, 2 changer transitions 0/23 dead transitions. [2023-08-04 07:24:36,185 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 25 places, 23 transitions, 94 flow [2023-08-04 07:24:36,185 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:36,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:36,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 269 transitions. [2023-08-04 07:24:36,186 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604166666666667 [2023-08-04 07:24:36,186 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 269 transitions. [2023-08-04 07:24:36,186 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 269 transitions. [2023-08-04 07:24:36,186 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:36,186 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 269 transitions. [2023-08-04 07:24:36,187 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 89.66666666666667) internal successors, (269), 3 states have internal predecessors, (269), 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 07:24:36,187 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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 07:24:36,188 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 160.0) internal successors, (640), 4 states have internal predecessors, (640), 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 07:24:36,188 INFO L175 Difference]: Start difference. First operand has 23 places, 18 transitions, 46 flow. Second operand 3 states and 269 transitions. [2023-08-04 07:24:36,188 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 25 places, 23 transitions, 94 flow [2023-08-04 07:24:36,188 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 23 transitions, 94 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:24:36,189 INFO L231 Difference]: Finished difference. Result has 26 places, 18 transitions, 54 flow [2023-08-04 07:24:36,189 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=160, PETRI_DIFFERENCE_MINUEND_FLOW=46, PETRI_DIFFERENCE_MINUEND_PLACES=23, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=18, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=16, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=54, PETRI_PLACES=26, PETRI_TRANSITIONS=18} [2023-08-04 07:24:36,189 INFO L281 CegarLoopForPetriNet]: 23 programPoint places, 3 predicate places. [2023-08-04 07:24:36,189 INFO L495 AbstractCegarLoop]: Abstraction has has 26 places, 18 transitions, 54 flow [2023-08-04 07:24:36,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 84.33333333333333) internal successors, (253), 3 states have internal predecessors, (253), 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 07:24:36,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:36,190 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:24:36,190 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 07:24:36,190 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 07:24:36,190 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:36,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1934953929, now seen corresponding path program 1 times [2023-08-04 07:24:36,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:36,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534737827] [2023-08-04 07:24:36,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:36,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:36,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:24:36,198 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:24:36,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:24:36,218 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:24:36,218 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:24:36,219 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 2 remaining) [2023-08-04 07:24:36,219 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 2 remaining) [2023-08-04 07:24:36,219 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 07:24:36,219 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 07:24:36,221 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN (2/2) [2023-08-04 07:24:36,221 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:24:36,221 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:24:36,251 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:24:36,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,277 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 07:24:36,277 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:24:36,278 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-04 07:24:36,278 INFO L82 GeneralOperation]: Start removeDead. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,279 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:24:36,280 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,280 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 122 places, 117 transitions, 258 flow [2023-08-04 07:24:36,303 INFO L124 PetriNetUnfolderBase]: 30/445 cut-off events. [2023-08-04 07:24:36,303 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:24:36,304 INFO L83 FinitePrefix]: Finished finitePrefix Result has 478 conditions, 445 events. 30/445 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 1856 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 323. Up to 18 conditions per place. [2023-08-04 07:24:36,308 INFO L119 LiptonReduction]: Number of co-enabled transitions 3436 [2023-08-04 07:24:38,589 INFO L134 LiptonReduction]: Checked pairs total: 9542 [2023-08-04 07:24:38,590 INFO L136 LiptonReduction]: Total number of compositions: 92 [2023-08-04 07:24:38,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:24:38,592 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;@2b922e73, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:24:38,592 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 07:24:38,594 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:24:38,594 INFO L124 PetriNetUnfolderBase]: 1/11 cut-off events. [2023-08-04 07:24:38,594 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:24:38,594 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:38,594 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 07:24:38,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:24:38,594 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:38,594 INFO L85 PathProgramCache]: Analyzing trace with hash 22820439, now seen corresponding path program 1 times [2023-08-04 07:24:38,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:38,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397955964] [2023-08-04 07:24:38,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:38,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:38,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:38,642 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 07:24:38,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:38,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397955964] [2023-08-04 07:24:38,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397955964] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:38,642 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:24:38,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 07:24:38,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1899503199] [2023-08-04 07:24:38,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:38,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:38,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:38,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:38,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:24:38,645 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 97 out of 209 [2023-08-04 07:24:38,645 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 39 transitions, 102 flow. Second operand has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 07:24:38,646 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:38,646 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 97 of 209 [2023-08-04 07:24:38,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:40,101 INFO L124 PetriNetUnfolderBase]: 13202/19657 cut-off events. [2023-08-04 07:24:40,102 INFO L125 PetriNetUnfolderBase]: For 362/362 co-relation queries the response was YES. [2023-08-04 07:24:40,124 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38433 conditions, 19657 events. 13202/19657 cut-off events. For 362/362 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 130680 event pairs, 2594 based on Foata normal form. 567/17305 useless extension candidates. Maximal degree in co-relation 32700. Up to 17103 conditions per place. [2023-08-04 07:24:40,196 INFO L140 encePairwiseOnDemand]: 203/209 looper letters, 49 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-04 07:24:40,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 49 places, 60 transitions, 261 flow [2023-08-04 07:24:40,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:40,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:40,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 347 transitions. [2023-08-04 07:24:40,197 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5534290271132376 [2023-08-04 07:24:40,197 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 347 transitions. [2023-08-04 07:24:40,197 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 347 transitions. [2023-08-04 07:24:40,197 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:40,197 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 347 transitions. [2023-08-04 07:24:40,198 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 115.66666666666667) internal successors, (347), 3 states have internal predecessors, (347), 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 07:24:40,200 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 07:24:40,200 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 07:24:40,200 INFO L175 Difference]: Start difference. First operand has 47 places, 39 transitions, 102 flow. Second operand 3 states and 347 transitions. [2023-08-04 07:24:40,200 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 49 places, 60 transitions, 261 flow [2023-08-04 07:24:40,202 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 60 transitions, 257 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 07:24:40,204 INFO L231 Difference]: Finished difference. Result has 50 places, 40 transitions, 117 flow [2023-08-04 07:24:40,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=96, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=35, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=117, PETRI_PLACES=50, PETRI_TRANSITIONS=40} [2023-08-04 07:24:40,205 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 3 predicate places. [2023-08-04 07:24:40,205 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 40 transitions, 117 flow [2023-08-04 07:24:40,205 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 98.33333333333333) internal successors, (295), 3 states have internal predecessors, (295), 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 07:24:40,205 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:40,206 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:24:40,206 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 07:24:40,206 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:24:40,206 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:40,206 INFO L85 PathProgramCache]: Analyzing trace with hash 459037128, now seen corresponding path program 1 times [2023-08-04 07:24:40,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:40,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149380688] [2023-08-04 07:24:40,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:40,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:40,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:24:40,238 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 07:24:40,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:24:40,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149380688] [2023-08-04 07:24:40,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149380688] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:24:40,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:24:40,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:24:40,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1115836219] [2023-08-04 07:24:40,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:24:40,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:24:40,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:24:40,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:24:40,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:24:40,247 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 209 [2023-08-04 07:24:40,247 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 40 transitions, 117 flow. Second operand has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 07:24:40,248 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:24:40,248 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 209 [2023-08-04 07:24:40,248 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:24:41,691 INFO L124 PetriNetUnfolderBase]: 12974/19241 cut-off events. [2023-08-04 07:24:41,691 INFO L125 PetriNetUnfolderBase]: For 2018/2018 co-relation queries the response was YES. [2023-08-04 07:24:41,709 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41090 conditions, 19241 events. 12974/19241 cut-off events. For 2018/2018 co-relation queries the response was YES. Maximal size of possible extension queue 799. Compared 124701 event pairs, 9730 based on Foata normal form. 0/16332 useless extension candidates. Maximal degree in co-relation 26603. Up to 17937 conditions per place. [2023-08-04 07:24:41,761 INFO L140 encePairwiseOnDemand]: 206/209 looper letters, 35 selfloop transitions, 2 changer transitions 0/45 dead transitions. [2023-08-04 07:24:41,761 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 52 places, 45 transitions, 204 flow [2023-08-04 07:24:41,761 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:24:41,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:24:41,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 318 transitions. [2023-08-04 07:24:41,762 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.507177033492823 [2023-08-04 07:24:41,762 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 318 transitions. [2023-08-04 07:24:41,762 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 318 transitions. [2023-08-04 07:24:41,762 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:24:41,763 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 318 transitions. [2023-08-04 07:24:41,763 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 106.0) internal successors, (318), 3 states have internal predecessors, (318), 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 07:24:41,764 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 07:24:41,764 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 209.0) internal successors, (836), 4 states have internal predecessors, (836), 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 07:24:41,764 INFO L175 Difference]: Start difference. First operand has 50 places, 40 transitions, 117 flow. Second operand 3 states and 318 transitions. [2023-08-04 07:24:41,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 52 places, 45 transitions, 204 flow [2023-08-04 07:24:41,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 45 transitions, 200 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:24:41,765 INFO L231 Difference]: Finished difference. Result has 52 places, 41 transitions, 126 flow [2023-08-04 07:24:41,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=209, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=52, PETRI_TRANSITIONS=41} [2023-08-04 07:24:41,766 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 5 predicate places. [2023-08-04 07:24:41,766 INFO L495 AbstractCegarLoop]: Abstraction has has 52 places, 41 transitions, 126 flow [2023-08-04 07:24:41,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 96.0) internal successors, (288), 3 states have internal predecessors, (288), 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 07:24:41,766 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:24:41,766 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:24:41,766 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 07:24:41,767 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P0Err0ASSERT_VIOLATIONERROR_FUNCTION === [P0Err0ASSERT_VIOLATIONERROR_FUNCTION, P0Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:24:41,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:24:41,767 INFO L85 PathProgramCache]: Analyzing trace with hash 1359886081, now seen corresponding path program 1 times [2023-08-04 07:24:41,767 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:24:41,767 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [967170299] [2023-08-04 07:24:41,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:24:41,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:24:41,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:24:41,778 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:24:41,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:24:41,786 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:24:41,786 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:24:41,786 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 07:24:41,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 07:24:41,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P0Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 07:24:41,786 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 07:24:41,786 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 07:24:41,786 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 07:24:41,787 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 07:24:41,788 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 07:24:41,788 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 07:24:41,809 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 07:24:41 BasicIcfg [2023-08-04 07:24:41,809 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 07:24:41,810 INFO L158 Benchmark]: Toolchain (without parser) took 12694.73ms. Allocated memory was 620.8MB in the beginning and 1.1GB in the end (delta: 438.3MB). Free memory was 573.6MB in the beginning and 531.9MB in the end (delta: 41.7MB). Peak memory consumption was 480.4MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,810 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 338.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 07:24:41,810 INFO L158 Benchmark]: CACSL2BoogieTranslator took 362.09ms. Allocated memory is still 620.8MB. Free memory was 573.2MB in the beginning and 550.6MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,810 INFO L158 Benchmark]: Boogie Procedure Inliner took 32.52ms. Allocated memory is still 620.8MB. Free memory was 550.6MB in the beginning and 547.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,810 INFO L158 Benchmark]: Boogie Preprocessor took 19.08ms. Allocated memory is still 620.8MB. Free memory was 547.7MB in the beginning and 546.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,810 INFO L158 Benchmark]: RCFGBuilder took 427.05ms. Allocated memory is still 620.8MB. Free memory was 546.0MB in the beginning and 586.7MB in the end (delta: -40.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,811 INFO L158 Benchmark]: TraceAbstraction took 11844.96ms. Allocated memory was 620.8MB in the beginning and 1.1GB in the end (delta: 438.3MB). Free memory was 585.7MB in the beginning and 531.9MB in the end (delta: 53.7MB). Peak memory consumption was 491.0MB. Max. memory is 16.0GB. [2023-08-04 07:24:41,811 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 385.9MB. Free memory is still 338.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 362.09ms. Allocated memory is still 620.8MB. Free memory was 573.2MB in the beginning and 550.6MB in the end (delta: 22.7MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 32.52ms. Allocated memory is still 620.8MB. Free memory was 550.6MB in the beginning and 547.7MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 19.08ms. Allocated memory is still 620.8MB. Free memory was 547.7MB in the beginning and 546.0MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 427.05ms. Allocated memory is still 620.8MB. Free memory was 546.0MB in the beginning and 586.7MB in the end (delta: -40.8MB). Peak memory consumption was 37.7MB. Max. memory is 16.0GB. * TraceAbstraction took 11844.96ms. Allocated memory was 620.8MB in the beginning and 1.1GB in the end (delta: 438.3MB). Free memory was 585.7MB in the beginning and 531.9MB in the end (delta: 53.7MB). Peak memory consumption was 491.0MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.6s, 101 PlacesBefore, 30 PlacesAfterwards, 100 TransitionsBefore, 26 TransitionsAfterwards, 1462 CoEnabledTransitionPairs, 7 FixpointIterations, 31 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 87 TotalNumberOfCompositions, 3929 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1609, independent: 1464, independent conditional: 0, independent unconditional: 1464, dependent: 145, dependent conditional: 0, dependent unconditional: 145, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 748, independent: 723, independent conditional: 0, independent unconditional: 723, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1609, independent: 741, independent conditional: 0, independent unconditional: 741, dependent: 120, dependent conditional: 0, dependent unconditional: 120, unknown: 748, unknown conditional: 0, unknown unconditional: 748] , Statistics on independence cache: Total cache size (in pairs): 63, Positive cache size: 51, Positive conditional cache size: 0, Positive unconditional cache size: 51, Negative cache size: 12, Negative conditional cache size: 0, Negative unconditional cache size: 12, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.7s, 77 PlacesBefore, 23 PlacesAfterwards, 73 TransitionsBefore, 18 TransitionsAfterwards, 652 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 20 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 8 ConcurrentYvCompositions, 1 ChoiceCompositions, 60 TotalNumberOfCompositions, 1541 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 891, independent: 806, independent conditional: 0, independent unconditional: 806, dependent: 85, dependent conditional: 0, dependent unconditional: 85, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 336, independent: 326, independent conditional: 0, independent unconditional: 326, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 891, independent: 480, independent conditional: 0, independent unconditional: 480, dependent: 75, dependent conditional: 0, dependent unconditional: 75, unknown: 336, unknown conditional: 0, unknown unconditional: 336] , Statistics on independence cache: Total cache size (in pairs): 41, Positive cache size: 36, Positive conditional cache size: 0, Positive unconditional cache size: 36, Negative cache size: 5, Negative conditional cache size: 0, Negative unconditional cache size: 5, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 122 PlacesBefore, 47 PlacesAfterwards, 117 TransitionsBefore, 39 TransitionsAfterwards, 3436 CoEnabledTransitionPairs, 6 FixpointIterations, 31 TrivialSequentialCompositions, 43 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 3 ChoiceCompositions, 92 TotalNumberOfCompositions, 9542 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 4056, independent: 3851, independent conditional: 0, independent unconditional: 3851, dependent: 205, dependent conditional: 0, dependent unconditional: 205, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1746, independent: 1702, independent conditional: 0, independent unconditional: 1702, dependent: 44, dependent conditional: 0, dependent unconditional: 44, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 4056, independent: 2149, independent conditional: 0, independent unconditional: 2149, dependent: 161, dependent conditional: 0, dependent unconditional: 161, unknown: 1746, unknown conditional: 0, unknown unconditional: 1746] , Statistics on independence cache: Total cache size (in pairs): 203, Positive cache size: 183, Positive conditional cache size: 0, Positive unconditional cache size: 183, Negative cache size: 20, Negative conditional cache size: 0, Negative unconditional cache size: 20, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L708] 0 int __unbuffered_cnt = 0; [L709] 0 _Bool main$tmp_guard0; [L710] 0 _Bool main$tmp_guard1; [L712] 0 int x = 0; [L714] 0 int y = 0; [L715] 0 _Bool y$flush_delayed; [L716] 0 int y$mem_tmp; [L717] 0 _Bool y$r_buff0_thd0; [L718] 0 _Bool y$r_buff0_thd1; [L719] 0 _Bool y$r_buff0_thd2; [L720] 0 _Bool y$r_buff1_thd0; [L721] 0 _Bool y$r_buff1_thd1; [L722] 0 _Bool y$r_buff1_thd2; [L723] 0 _Bool y$read_delayed; [L724] 0 int *y$read_delayed_var; [L725] 0 int y$w_buff0; [L726] 0 _Bool y$w_buff0_used; [L727] 0 int y$w_buff1; [L728] 0 _Bool y$w_buff1_used; [L729] 0 _Bool weak$$choice0; [L730] 0 _Bool weak$$choice2; [L790] 0 pthread_t t2473[2]; [L791] 0 int asdf=0; VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=-1, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 1 y$w_buff1 = y$w_buff0 [L735] 1 y$w_buff0 = 2 [L736] 1 y$w_buff1_used = y$w_buff0_used [L737] 1 y$w_buff0_used = (_Bool)1 [L738] CALL 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 1 !(!expression) [L738] RET 1 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L739] 1 y$r_buff1_thd0 = y$r_buff0_thd0 [L740] 1 y$r_buff1_thd1 = y$r_buff0_thd1 [L741] 1 y$r_buff1_thd2 = y$r_buff0_thd2 [L742] 1 y$r_buff0_thd1 = (_Bool)1 VAL [__unbuffered_cnt=0, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] 0 asdf++ VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L791] COND TRUE 0 asdf<2 [L791] FCALL, FORK 0 pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2473[asdf], ((void *)0), P0, ((void *)0))=0, t2473={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0] [L734] 2 y$w_buff1 = y$w_buff0 [L735] 2 y$w_buff0 = 2 [L736] 2 y$w_buff1_used = y$w_buff0_used [L737] 2 y$w_buff0_used = (_Bool)1 [L738] CALL 2 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 2 !expression [L18] 2 reach_error() VAL [\old(expression)=1, __unbuffered_cnt=0, expression=1, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=1, y$r_buff0_thd2=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=2, y$w_buff0_used=1, y$w_buff1=2, y$w_buff1_used=1, y=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 5 procedures, 114 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 4.4s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 73 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 49 mSDsluCounter, 3 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 15 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 162 IncrementalHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 15 mSolverCounterUnsat, 3 mSDtfsCounter, 162 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=0, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 57 ConstructedInterpolants, 0 QuantifiedInterpolants, 99 SizeOfPredicates, 0 NumberOfNonLiveVariables, 325 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 4/8 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 7 procedures, 131 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.5s, OverallIterations: 3, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 36 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 24 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 127 IncrementalHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 127 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=126occurred in iteration=2, InterpolantAutomatonStates: 6, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 16 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 5 procedures, 114 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.8s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 17 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 10 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 34 IncrementalHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 1 mSDtfsCounter, 34 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=54occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 6 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 1/1 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 07:24:41,833 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request...