/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_safe031_power.opt_pso.opt_rmo.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 07:26:30,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 07:26:30,105 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 07:26:30,110 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 07:26:30,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 07:26:30,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 07:26:30,111 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 07:26:30,132 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 07:26:30,132 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 07:26:30,135 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 07:26:30,135 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 07:26:30,136 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 07:26:30,136 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 07:26:30,137 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 07:26:30,137 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 07:26:30,138 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 07:26:30,138 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 07:26:30,138 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 07:26:30,138 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 07:26:30,138 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 07:26:30,138 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 07:26:30,139 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 07:26:30,139 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 07:26:30,139 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 07:26:30,139 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 07:26:30,140 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 07:26:30,140 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 07:26:30,140 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 07:26:30,141 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 07:26:30,141 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 07:26:30,141 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:26:30,142 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 07:26:30,142 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 07:26:30,143 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 07:26:30,143 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 07:26:30,305 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 07:26:30,319 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 07:26:30,322 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 07:26:30,322 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 07:26:30,323 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 07:26:30,323 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe031_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 07:26:31,187 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 07:26:31,388 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 07:26:31,389 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe031_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 07:26:31,404 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2ba958a/633a811ecbfb434f99dfe8298a6520e6/FLAGf360a497d [2023-08-04 07:26:31,413 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8a2ba958a/633a811ecbfb434f99dfe8298a6520e6 [2023-08-04 07:26:31,416 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 07:26:31,417 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 07:26:31,419 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 07:26:31,419 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 07:26:31,421 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 07:26:31,422 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,422 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4392fde8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31, skipping insertion in model container [2023-08-04 07:26:31,422 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,460 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 07:26:31,596 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_safe031_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-04 07:26:31,765 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:26:31,771 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 07:26:31,780 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_safe031_power.opt_pso.opt_rmo.opt_bound2.i[967,980] [2023-08-04 07:26:31,799 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:26:31,800 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 07:26:31,832 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 07:26:31,852 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:26:31,852 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 07:26:31,856 INFO L206 MainTranslator]: Completed translation [2023-08-04 07:26:31,856 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31 WrapperNode [2023-08-04 07:26:31,857 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 07:26:31,857 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 07:26:31,857 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 07:26:31,857 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 07:26:31,863 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,880 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,898 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 168 [2023-08-04 07:26:31,898 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 07:26:31,898 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 07:26:31,898 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 07:26:31,898 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 07:26:31,904 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,904 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,906 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,906 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,919 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,921 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,923 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,924 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,926 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 07:26:31,926 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 07:26:31,926 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 07:26:31,926 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 07:26:31,927 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (1/1) ... [2023-08-04 07:26:31,939 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 07:26:31,951 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:26:31,961 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 07:26:31,962 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 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 07:26:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 07:26:31,982 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 07:26:31,982 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 07:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 07:26:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 07:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 07:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 07:26:31,983 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 07:26:31,983 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 07:26:31,984 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 07:26:32,070 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 07:26:32,071 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 07:26:32,292 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 07:26:32,388 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 07:26:32,388 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 07:26:32,389 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:26:32 BoogieIcfgContainer [2023-08-04 07:26:32,389 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 07:26:32,391 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 07:26:32,391 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 07:26:32,394 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 07:26:32,394 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 07:26:31" (1/3) ... [2023-08-04 07:26:32,395 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157a4b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:26:32, skipping insertion in model container [2023-08-04 07:26:32,395 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 07:26:31" (2/3) ... [2023-08-04 07:26:32,396 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@157a4b4e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 07:26:32, skipping insertion in model container [2023-08-04 07:26:32,396 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 07:26:32" (3/3) ... [2023-08-04 07:26:32,397 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe031_power.opt_pso.opt_rmo.opt_bound2.i [2023-08-04 07:26:32,402 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 07:26:32,408 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 07:26:32,408 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 07:26:32,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 07:26:32,446 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:26:32,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 07:26:32,555 INFO L124 PetriNetUnfolderBase]: 30/449 cut-off events. [2023-08-04 07:26:32,556 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:32,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 449 events. 30/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1994 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-08-04 07:26:32,562 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 07:26:32,565 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 127 places, 125 transitions, 261 flow [2023-08-04 07:26:32,567 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:26:32,572 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 127 places, 125 transitions, 261 flow [2023-08-04 07:26:32,574 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 127 places, 125 transitions, 261 flow [2023-08-04 07:26:32,574 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 127 places, 125 transitions, 261 flow [2023-08-04 07:26:32,625 INFO L124 PetriNetUnfolderBase]: 30/446 cut-off events. [2023-08-04 07:26:32,625 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:32,627 INFO L83 FinitePrefix]: Finished finitePrefix Result has 468 conditions, 446 events. 30/446 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1969 event pairs, 0 based on Foata normal form. 0/390 useless extension candidates. Maximal degree in co-relation 260. Up to 16 conditions per place. [2023-08-04 07:26:32,631 INFO L119 LiptonReduction]: Number of co-enabled transitions 2462 [2023-08-04 07:26:35,622 INFO L134 LiptonReduction]: Checked pairs total: 5381 [2023-08-04 07:26:35,622 INFO L136 LiptonReduction]: Total number of compositions: 107 [2023-08-04 07:26:35,631 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:26:35,635 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;@7d8160aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:26:35,636 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:26:35,639 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:26:35,639 INFO L124 PetriNetUnfolderBase]: 1/20 cut-off events. [2023-08-04 07:26:35,639 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:35,639 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:35,639 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:26:35,640 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:26:35,643 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:35,643 INFO L85 PathProgramCache]: Analyzing trace with hash -1049293401, now seen corresponding path program 1 times [2023-08-04 07:26:35,649 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:35,649 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [285505860] [2023-08-04 07:26:35,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:35,649 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:35,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:35,846 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 07:26:35,847 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:26:35,847 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [285505860] [2023-08-04 07:26:35,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [285505860] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:26:35,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:26:35,848 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:26:35,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2135710234] [2023-08-04 07:26:35,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:26:35,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:26:35,857 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:26:35,872 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:26:35,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:26:35,889 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 234 [2023-08-04 07:26:35,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 07:26:35,892 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:26:35,892 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 234 [2023-08-04 07:26:35,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:26:36,135 INFO L124 PetriNetUnfolderBase]: 1537/2473 cut-off events. [2023-08-04 07:26:36,135 INFO L125 PetriNetUnfolderBase]: For 10/10 co-relation queries the response was YES. [2023-08-04 07:26:36,138 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4949 conditions, 2473 events. 1537/2473 cut-off events. For 10/10 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 13810 event pairs, 1255 based on Foata normal form. 90/2116 useless extension candidates. Maximal degree in co-relation 4936. Up to 2381 conditions per place. [2023-08-04 07:26:36,145 INFO L140 encePairwiseOnDemand]: 230/234 looper letters, 27 selfloop transitions, 2 changer transitions 1/34 dead transitions. [2023-08-04 07:26:36,145 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 40 places, 34 transitions, 139 flow [2023-08-04 07:26:36,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:26:36,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:26:36,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 356 transitions. [2023-08-04 07:26:36,155 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5071225071225072 [2023-08-04 07:26:36,155 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 356 transitions. [2023-08-04 07:26:36,155 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 356 transitions. [2023-08-04 07:26:36,156 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:26:36,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 356 transitions. [2023-08-04 07:26:36,160 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 118.66666666666667) internal successors, (356), 3 states have internal predecessors, (356), 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 07:26:36,163 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:26:36,164 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:26:36,165 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 75 flow. Second operand 3 states and 356 transitions. [2023-08-04 07:26:36,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 40 places, 34 transitions, 139 flow [2023-08-04 07:26:36,167 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 34 transitions, 139 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:26:36,168 INFO L231 Difference]: Finished difference. Result has 41 places, 31 transitions, 81 flow [2023-08-04 07:26:36,169 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=73, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=81, PETRI_PLACES=41, PETRI_TRANSITIONS=31} [2023-08-04 07:26:36,171 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 3 predicate places. [2023-08-04 07:26:36,171 INFO L495 AbstractCegarLoop]: Abstraction has has 41 places, 31 transitions, 81 flow [2023-08-04 07:26:36,171 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 110.0) internal successors, (330), 3 states have internal predecessors, (330), 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 07:26:36,171 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:36,171 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:26:36,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 07:26:36,172 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:26:36,172 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:36,172 INFO L85 PathProgramCache]: Analyzing trace with hash 47420800, now seen corresponding path program 1 times [2023-08-04 07:26:36,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:36,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642477097] [2023-08-04 07:26:36,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:36,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:36,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:36,230 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 07:26:36,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:26:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642477097] [2023-08-04 07:26:36,230 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642477097] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:26:36,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [526345636] [2023-08-04 07:26:36,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:36,231 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:26:36,231 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:26:36,233 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 07:26:36,268 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 07:26:36,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:36,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:26:36,308 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:26:36,327 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 07:26:36,327 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:26:36,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [526345636] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:26:36,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:26:36,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:26:36,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649078917] [2023-08-04 07:26:36,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:26:36,328 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:26:36,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:26:36,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:26:36,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:26:36,336 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 234 [2023-08-04 07:26:36,337 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 31 transitions, 81 flow. Second operand has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 07:26:36,337 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:26:36,337 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 234 [2023-08-04 07:26:36,337 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:26:36,501 INFO L124 PetriNetUnfolderBase]: 1335/2088 cut-off events. [2023-08-04 07:26:36,501 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-04 07:26:36,504 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4209 conditions, 2088 events. 1335/2088 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 11205 event pairs, 828 based on Foata normal form. 0/1739 useless extension candidates. Maximal degree in co-relation 4193. Up to 1995 conditions per place. [2023-08-04 07:26:36,510 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 30 selfloop transitions, 2 changer transitions 1/37 dead transitions. [2023-08-04 07:26:36,510 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 37 transitions, 159 flow [2023-08-04 07:26:36,511 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:26:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:26:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 358 transitions. [2023-08-04 07:26:36,512 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.50997150997151 [2023-08-04 07:26:36,513 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 358 transitions. [2023-08-04 07:26:36,513 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 358 transitions. [2023-08-04 07:26:36,513 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:26:36,513 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 358 transitions. [2023-08-04 07:26:36,514 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 119.33333333333333) internal successors, (358), 3 states have internal predecessors, (358), 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 07:26:36,515 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:26:36,515 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 234.0) internal successors, (936), 4 states have internal predecessors, (936), 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 07:26:36,516 INFO L175 Difference]: Start difference. First operand has 41 places, 31 transitions, 81 flow. Second operand 3 states and 358 transitions. [2023-08-04 07:26:36,516 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 37 transitions, 159 flow [2023-08-04 07:26:36,516 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 37 transitions, 155 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 07:26:36,517 INFO L231 Difference]: Finished difference. Result has 42 places, 31 transitions, 85 flow [2023-08-04 07:26:36,517 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=77, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=31, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=85, PETRI_PLACES=42, PETRI_TRANSITIONS=31} [2023-08-04 07:26:36,517 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, 4 predicate places. [2023-08-04 07:26:36,517 INFO L495 AbstractCegarLoop]: Abstraction has has 42 places, 31 transitions, 85 flow [2023-08-04 07:26:36,518 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 111.0) internal successors, (333), 3 states have internal predecessors, (333), 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 07:26:36,518 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:36,518 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:26:36,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 07:26:36,724 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:26:36,725 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 07:26:36,725 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:36,725 INFO L85 PathProgramCache]: Analyzing trace with hash 591234002, now seen corresponding path program 1 times [2023-08-04 07:26:36,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:36,726 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [191265885] [2023-08-04 07:26:36,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:36,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:36,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:36,819 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 07:26:36,819 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:26:36,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [191265885] [2023-08-04 07:26:36,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [191265885] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:26:36,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [532017693] [2023-08-04 07:26:36,823 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:36,823 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:26:36,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:26:36,824 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 07:26:36,826 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 07:26:36,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:36,905 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:26:36,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:26:36,925 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 07:26:36,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:26:36,937 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 07:26:36,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [532017693] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:26:36,937 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:26:36,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:26:36,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949771619] [2023-08-04 07:26:36,937 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:26:36,937 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:26:36,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:26:36,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:26:36,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:26:36,949 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 107 out of 234 [2023-08-04 07:26:36,950 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 31 transitions, 85 flow. Second operand has 5 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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 07:26:36,950 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:26:36,950 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 107 of 234 [2023-08-04 07:26:36,950 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:26:36,973 INFO L124 PetriNetUnfolderBase]: 4/16 cut-off events. [2023-08-04 07:26:36,973 INFO L125 PetriNetUnfolderBase]: For 8/8 co-relation queries the response was YES. [2023-08-04 07:26:36,973 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44 conditions, 16 events. 4/16 cut-off events. For 8/8 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 18 event pairs, 1 based on Foata normal form. 3/19 useless extension candidates. Maximal degree in co-relation 36. Up to 10 conditions per place. [2023-08-04 07:26:36,973 INFO L140 encePairwiseOnDemand]: 231/234 looper letters, 0 selfloop transitions, 0 changer transitions 10/10 dead transitions. [2023-08-04 07:26:36,973 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 18 places, 10 transitions, 43 flow [2023-08-04 07:26:36,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:26:36,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:26:36,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 438 transitions. [2023-08-04 07:26:36,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46794871794871795 [2023-08-04 07:26:36,974 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 438 transitions. [2023-08-04 07:26:36,974 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 438 transitions. [2023-08-04 07:26:36,975 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:26:36,975 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 438 transitions. [2023-08-04 07:26:36,976 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 109.5) internal successors, (438), 4 states have internal predecessors, (438), 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 07:26:36,977 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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 07:26:36,977 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 234.0) internal successors, (1170), 5 states have internal predecessors, (1170), 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 07:26:36,978 INFO L175 Difference]: Start difference. First operand has 42 places, 31 transitions, 85 flow. Second operand 4 states and 438 transitions. [2023-08-04 07:26:36,978 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 18 places, 10 transitions, 43 flow [2023-08-04 07:26:36,978 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 10 transitions, 41 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:26:36,978 INFO L231 Difference]: Finished difference. Result has 17 places, 0 transitions, 0 flow [2023-08-04 07:26:36,978 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=234, PETRI_DIFFERENCE_MINUEND_FLOW=17, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=7, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=7, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=17, PETRI_TRANSITIONS=0} [2023-08-04 07:26:36,979 INFO L281 CegarLoopForPetriNet]: 38 programPoint places, -21 predicate places. [2023-08-04 07:26:36,979 INFO L495 AbstractCegarLoop]: Abstraction has has 17 places, 0 transitions, 0 flow [2023-08-04 07:26:36,979 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 110.2) internal successors, (551), 5 states have internal predecessors, (551), 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 07:26:36,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 07:26:36,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 07:26:36,981 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 07:26:36,993 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 07:26:37,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-08-04 07:26:37,188 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 07:26:37,190 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 07:26:37,194 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 07:26:37,215 INFO L124 PetriNetUnfolderBase]: 30/449 cut-off events. [2023-08-04 07:26:37,216 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:37,216 INFO L83 FinitePrefix]: Finished finitePrefix Result has 474 conditions, 449 events. 30/449 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1994 event pairs, 0 based on Foata normal form. 0/393 useless extension candidates. Maximal degree in co-relation 266. Up to 16 conditions per place. [2023-08-04 07:26:37,216 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-04 07:26:37,217 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 211 flow [2023-08-04 07:26:37,217 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:26:37,217 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 07:26:37,217 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-04 07:26:37,218 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 211 flow [2023-08-04 07:26:37,227 INFO L124 PetriNetUnfolderBase]: 6/217 cut-off events. [2023-08-04 07:26:37,227 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:37,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 242 conditions, 217 events. 6/217 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 9. Compared 653 event pairs, 0 based on Foata normal form. 0/201 useless extension candidates. Maximal degree in co-relation 150. Up to 8 conditions per place. [2023-08-04 07:26:37,229 INFO L119 LiptonReduction]: Number of co-enabled transitions 1282 [2023-08-04 07:26:39,412 INFO L134 LiptonReduction]: Checked pairs total: 2888 [2023-08-04 07:26:39,412 INFO L136 LiptonReduction]: Total number of compositions: 78 [2023-08-04 07:26:39,413 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 07:26:39,414 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;@7d8160aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:26:39,414 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 07:26:39,416 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:26:39,416 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2023-08-04 07:26:39,416 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:39,416 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:39,416 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:26:39,416 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:26:39,416 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:39,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1263223325, now seen corresponding path program 1 times [2023-08-04 07:26:39,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:39,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [929191034] [2023-08-04 07:26:39,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:39,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:39,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:39,476 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 07:26:39,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:26:39,476 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [929191034] [2023-08-04 07:26:39,478 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [929191034] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:26:39,478 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:26:39,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:26:39,481 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764127198] [2023-08-04 07:26:39,482 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:26:39,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:26:39,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:26:39,482 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:26:39,482 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:26:39,490 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 108 out of 205 [2023-08-04 07:26:39,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 26 transitions, 67 flow. Second operand has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 07:26:39,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:26:39,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 108 of 205 [2023-08-04 07:26:39,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:26:39,585 INFO L124 PetriNetUnfolderBase]: 319/618 cut-off events. [2023-08-04 07:26:39,585 INFO L125 PetriNetUnfolderBase]: For 11/11 co-relation queries the response was YES. [2023-08-04 07:26:39,586 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1251 conditions, 618 events. 319/618 cut-off events. For 11/11 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3095 event pairs, 247 based on Foata normal form. 0/549 useless extension candidates. Maximal degree in co-relation 1234. Up to 533 conditions per place. [2023-08-04 07:26:39,589 INFO L140 encePairwiseOnDemand]: 202/205 looper letters, 21 selfloop transitions, 2 changer transitions 0/29 dead transitions. [2023-08-04 07:26:39,589 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 29 transitions, 119 flow [2023-08-04 07:26:39,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:26:39,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:26:39,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 348 transitions. [2023-08-04 07:26:39,591 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5658536585365853 [2023-08-04 07:26:39,591 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 348 transitions. [2023-08-04 07:26:39,591 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 348 transitions. [2023-08-04 07:26:39,591 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:26:39,591 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 348 transitions. [2023-08-04 07:26:39,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 116.0) internal successors, (348), 3 states have internal predecessors, (348), 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 07:26:39,593 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 07:26:39,594 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 205.0) internal successors, (820), 4 states have internal predecessors, (820), 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 07:26:39,594 INFO L175 Difference]: Start difference. First operand has 33 places, 26 transitions, 67 flow. Second operand 3 states and 348 transitions. [2023-08-04 07:26:39,594 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 29 transitions, 119 flow [2023-08-04 07:26:39,595 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 29 transitions, 119 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 07:26:39,596 INFO L231 Difference]: Finished difference. Result has 36 places, 26 transitions, 75 flow [2023-08-04 07:26:39,596 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=205, PETRI_DIFFERENCE_MINUEND_FLOW=67, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=26, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=75, PETRI_PLACES=36, PETRI_TRANSITIONS=26} [2023-08-04 07:26:39,597 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 3 predicate places. [2023-08-04 07:26:39,597 INFO L495 AbstractCegarLoop]: Abstraction has has 36 places, 26 transitions, 75 flow [2023-08-04 07:26:39,598 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 109.66666666666667) internal successors, (329), 3 states have internal predecessors, (329), 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 07:26:39,598 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:39,598 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 07:26:39,598 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 07:26:39,599 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 07:26:39,599 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:39,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1266307951, now seen corresponding path program 1 times [2023-08-04 07:26:39,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:39,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2061109883] [2023-08-04 07:26:39,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:39,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:39,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:26:39,620 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:26:39,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:26:39,652 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:26:39,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:26:39,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 07:26:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 07:26:39,653 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 07:26:39,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 07:26:39,654 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 07:26:39,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 07:26:39,655 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 07:26:39,655 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 07:26:39,676 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 07:26:39,678 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 07:26:39,797 INFO L124 PetriNetUnfolderBase]: 93/1390 cut-off events. [2023-08-04 07:26:39,797 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 07:26:39,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1488 conditions, 1390 events. 93/1390 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9632 event pairs, 0 based on Foata normal form. 0/1213 useless extension candidates. Maximal degree in co-relation 1004. Up to 54 conditions per place. [2023-08-04 07:26:39,803 INFO L82 GeneralOperation]: Start removeDead. Operand has 159 places, 151 transitions, 338 flow [2023-08-04 07:26:39,807 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 157 places, 149 transitions, 326 flow [2023-08-04 07:26:39,807 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 07:26:39,807 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 157 places, 149 transitions, 326 flow [2023-08-04 07:26:39,808 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 157 places, 149 transitions, 326 flow [2023-08-04 07:26:39,808 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 157 places, 149 transitions, 326 flow [2023-08-04 07:26:39,924 INFO L124 PetriNetUnfolderBase]: 93/1386 cut-off events. [2023-08-04 07:26:39,924 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-04 07:26:39,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1476 conditions, 1386 events. 93/1386 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9591 event pairs, 0 based on Foata normal form. 0/1209 useless extension candidates. Maximal degree in co-relation 992. Up to 54 conditions per place. [2023-08-04 07:26:39,952 INFO L119 LiptonReduction]: Number of co-enabled transitions 5924 [2023-08-04 07:26:42,719 INFO L134 LiptonReduction]: Checked pairs total: 15992 [2023-08-04 07:26:42,720 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-04 07:26:42,724 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 07:26:42,735 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;@7d8160aa, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 07:26:42,735 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 07:26:42,737 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 07:26:42,737 INFO L124 PetriNetUnfolderBase]: 1/21 cut-off events. [2023-08-04 07:26:42,737 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 07:26:42,737 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:26:42,738 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 07:26:42,738 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:26:42,738 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:26:42,738 INFO L85 PathProgramCache]: Analyzing trace with hash 1276117410, now seen corresponding path program 1 times [2023-08-04 07:26:42,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:26:42,738 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1176385513] [2023-08-04 07:26:42,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:26:42,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:26:42,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:26:42,761 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 07:26:42,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:26:42,762 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1176385513] [2023-08-04 07:26:42,762 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1176385513] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:26:42,762 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:26:42,762 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 07:26:42,762 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316615331] [2023-08-04 07:26:42,762 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:26:42,762 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:26:42,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:26:42,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:26:42,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:26:42,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 07:26:42,770 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 50 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 07:26:42,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:26:42,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 07:26:42,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:27:07,884 INFO L124 PetriNetUnfolderBase]: 267242/353799 cut-off events. [2023-08-04 07:27:07,884 INFO L125 PetriNetUnfolderBase]: For 4437/4437 co-relation queries the response was YES. [2023-08-04 07:27:08,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 697214 conditions, 353799 events. 267242/353799 cut-off events. For 4437/4437 co-relation queries the response was YES. Maximal size of possible extension queue 9866. Compared 2489663 event pairs, 220020 based on Foata normal form. 7812/308342 useless extension candidates. Maximal degree in co-relation 200917. Up to 338076 conditions per place. [2023-08-04 07:27:09,874 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 41 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-04 07:27:09,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 53 transitions, 220 flow [2023-08-04 07:27:09,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:27:09,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:27:09,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 420 transitions. [2023-08-04 07:27:09,876 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5243445692883895 [2023-08-04 07:27:09,876 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 420 transitions. [2023-08-04 07:27:09,876 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 420 transitions. [2023-08-04 07:27:09,877 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:27:09,877 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 420 transitions. [2023-08-04 07:27:09,878 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.0) internal successors, (420), 3 states have internal predecessors, (420), 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 07:27:09,879 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:27:09,880 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:27:09,880 INFO L175 Difference]: Start difference. First operand has 62 places, 50 transitions, 128 flow. Second operand 3 states and 420 transitions. [2023-08-04 07:27:09,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 53 transitions, 220 flow [2023-08-04 07:27:09,890 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 53 transitions, 218 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-04 07:27:09,892 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 136 flow [2023-08-04 07:27:09,892 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2023-08-04 07:27:09,893 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 3 predicate places. [2023-08-04 07:27:09,893 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 136 flow [2023-08-04 07:27:09,893 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 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 07:27:09,893 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:27:09,893 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:27:09,893 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 07:27:09,894 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:27:09,894 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:27:09,894 INFO L85 PathProgramCache]: Analyzing trace with hash 2073348871, now seen corresponding path program 1 times [2023-08-04 07:27:09,894 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:27:09,894 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324673277] [2023-08-04 07:27:09,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:09,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:27:09,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:09,934 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 07:27:09,935 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:27:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324673277] [2023-08-04 07:27:09,935 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324673277] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:27:09,935 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1492807058] [2023-08-04 07:27:09,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:09,935 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:27:09,935 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:27:09,936 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:27:09,938 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 07:27:10,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:10,004 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-04 07:27:10,004 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:27:10,009 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 07:27:10,009 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 07:27:10,009 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1492807058] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:27:10,009 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 07:27:10,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-04 07:27:10,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336585505] [2023-08-04 07:27:10,010 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:27:10,010 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:27:10,010 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:27:10,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:27:10,011 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:27:10,018 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 07:27:10,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 07:27:10,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:27:10,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 07:27:10,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:27:33,609 INFO L124 PetriNetUnfolderBase]: 258886/341128 cut-off events. [2023-08-04 07:27:33,609 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-04 07:27:34,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 672773 conditions, 341128 events. 258886/341128 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 9805. Compared 2386615 event pairs, 208258 based on Foata normal form. 0/293895 useless extension candidates. Maximal degree in co-relation 672736. Up to 326233 conditions per place. [2023-08-04 07:27:35,559 INFO L140 encePairwiseOnDemand]: 264/267 looper letters, 47 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 07:27:35,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 252 flow [2023-08-04 07:27:35,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:27:35,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:27:35,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 424 transitions. [2023-08-04 07:27:35,561 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.529338327091136 [2023-08-04 07:27:35,561 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 424 transitions. [2023-08-04 07:27:35,561 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 424 transitions. [2023-08-04 07:27:35,561 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:27:35,561 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 424 transitions. [2023-08-04 07:27:35,562 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 141.33333333333334) internal successors, (424), 3 states have internal predecessors, (424), 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 07:27:35,563 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:27:35,563 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:27:35,563 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 136 flow. Second operand 3 states and 424 transitions. [2023-08-04 07:27:35,563 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 252 flow [2023-08-04 07:27:35,564 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 59 transitions, 250 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:27:35,565 INFO L231 Difference]: Finished difference. Result has 67 places, 51 transitions, 146 flow [2023-08-04 07:27:35,565 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=67, PETRI_TRANSITIONS=51} [2023-08-04 07:27:35,565 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 5 predicate places. [2023-08-04 07:27:35,565 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 51 transitions, 146 flow [2023-08-04 07:27:35,565 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 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 07:27:35,565 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:27:35,566 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:27:35,570 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 07:27:35,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:27:35,769 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:27:35,770 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:27:35,770 INFO L85 PathProgramCache]: Analyzing trace with hash 514625726, now seen corresponding path program 1 times [2023-08-04 07:27:35,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:27:35,770 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1627114387] [2023-08-04 07:27:35,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:35,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:27:35,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:35,802 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 07:27:35,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:27:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1627114387] [2023-08-04 07:27:35,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1627114387] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:27:35,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2131077929] [2023-08-04 07:27:35,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:35,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:27:35,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:27:35,804 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:27:35,806 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 07:27:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:35,878 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:27:35,878 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:27:35,889 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 07:27:35,889 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:27:35,903 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 07:27:35,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2131077929] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:27:35,904 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:27:35,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 07:27:35,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636288817] [2023-08-04 07:27:35,904 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:27:35,904 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:27:35,905 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:27:35,905 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:27:35,905 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:27:35,916 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-04 07:27:35,917 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 51 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 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 07:27:35,917 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:27:35,917 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-04 07:27:35,917 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:27:54,186 INFO L124 PetriNetUnfolderBase]: 202606/264116 cut-off events. [2023-08-04 07:27:54,187 INFO L125 PetriNetUnfolderBase]: For 2979/2979 co-relation queries the response was YES. [2023-08-04 07:27:54,834 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521713 conditions, 264116 events. 202606/264116 cut-off events. For 2979/2979 co-relation queries the response was YES. Maximal size of possible extension queue 7826. Compared 1750645 event pairs, 135114 based on Foata normal form. 3/229342 useless extension candidates. Maximal degree in co-relation 185134. Up to 253192 conditions per place. [2023-08-04 07:27:55,638 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 45 selfloop transitions, 3 changer transitions 1/59 dead transitions. [2023-08-04 07:27:55,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 59 transitions, 260 flow [2023-08-04 07:27:55,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:27:55,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:27:55,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 545 transitions. [2023-08-04 07:27:55,640 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5102996254681648 [2023-08-04 07:27:55,640 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 545 transitions. [2023-08-04 07:27:55,640 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 545 transitions. [2023-08-04 07:27:55,641 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:27:55,641 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 545 transitions. [2023-08-04 07:27:55,642 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 136.25) internal successors, (545), 4 states have internal predecessors, (545), 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 07:27:55,643 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 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 07:27:55,643 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 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 07:27:55,643 INFO L175 Difference]: Start difference. First operand has 67 places, 51 transitions, 146 flow. Second operand 4 states and 545 transitions. [2023-08-04 07:27:55,643 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 59 transitions, 260 flow [2023-08-04 07:27:55,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:27:55,645 INFO L231 Difference]: Finished difference. Result has 71 places, 51 transitions, 158 flow [2023-08-04 07:27:55,645 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=71, PETRI_TRANSITIONS=51} [2023-08-04 07:27:55,646 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 9 predicate places. [2023-08-04 07:27:55,646 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 51 transitions, 158 flow [2023-08-04 07:27:55,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 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 07:27:55,646 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:27:55,646 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:27:55,651 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 07:27:55,850 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:27:55,851 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:27:55,851 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:27:55,851 INFO L85 PathProgramCache]: Analyzing trace with hash -871773566, now seen corresponding path program 1 times [2023-08-04 07:27:55,851 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:27:55,851 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [73687807] [2023-08-04 07:27:55,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:55,851 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:27:55,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:55,898 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:27:55,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:27:55,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [73687807] [2023-08-04 07:27:55,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [73687807] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 07:27:55,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [69720539] [2023-08-04 07:27:55,899 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:27:55,899 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:27:55,900 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 07:27:55,900 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 07:27:56,035 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-04 07:27:56,111 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:27:56,112 INFO L262 TraceCheckSpWp]: Trace formula consists of 203 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 07:27:56,112 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 07:27:56,125 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:27:56,126 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 07:27:56,141 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 07:27:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [69720539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 07:27:56,141 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 07:27:56,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-04 07:27:56,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214508554] [2023-08-04 07:27:56,141 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 07:27:56,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 07:27:56,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:27:56,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 07:27:56,142 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 07:27:56,152 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 267 [2023-08-04 07:27:56,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 51 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 07:27:56,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:27:56,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 267 [2023-08-04 07:27:56,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:28:11,696 INFO L124 PetriNetUnfolderBase]: 168352/217750 cut-off events. [2023-08-04 07:28:11,697 INFO L125 PetriNetUnfolderBase]: For 2205/2205 co-relation queries the response was YES. [2023-08-04 07:28:12,183 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430285 conditions, 217750 events. 168352/217750 cut-off events. For 2205/2205 co-relation queries the response was YES. Maximal size of possible extension queue 7192. Compared 1409806 event pairs, 107266 based on Foata normal form. 36/189993 useless extension candidates. Maximal degree in co-relation 152428. Up to 207628 conditions per place. [2023-08-04 07:28:12,754 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 56 selfloop transitions, 3 changer transitions 1/70 dead transitions. [2023-08-04 07:28:12,754 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 70 transitions, 316 flow [2023-08-04 07:28:12,754 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 07:28:12,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 07:28:12,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 556 transitions. [2023-08-04 07:28:12,756 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5205992509363296 [2023-08-04 07:28:12,756 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 556 transitions. [2023-08-04 07:28:12,756 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 556 transitions. [2023-08-04 07:28:12,756 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:28:12,756 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 556 transitions. [2023-08-04 07:28:12,757 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.0) internal successors, (556), 4 states have internal predecessors, (556), 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 07:28:12,758 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 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 07:28:12,758 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 267.0) internal successors, (1335), 5 states have internal predecessors, (1335), 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 07:28:12,758 INFO L175 Difference]: Start difference. First operand has 71 places, 51 transitions, 158 flow. Second operand 4 states and 556 transitions. [2023-08-04 07:28:12,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 70 transitions, 316 flow [2023-08-04 07:28:12,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 70 transitions, 309 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:28:12,760 INFO L231 Difference]: Finished difference. Result has 73 places, 51 transitions, 165 flow [2023-08-04 07:28:12,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=151, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=165, PETRI_PLACES=73, PETRI_TRANSITIONS=51} [2023-08-04 07:28:12,761 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-04 07:28:12,761 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 51 transitions, 165 flow [2023-08-04 07:28:12,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 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 07:28:12,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:28:12,761 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:28:12,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-04 07:28:12,966 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 07:28:12,967 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:28:12,967 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:28:12,967 INFO L85 PathProgramCache]: Analyzing trace with hash 1513461242, now seen corresponding path program 1 times [2023-08-04 07:28:12,967 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:28:12,967 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113918526] [2023-08-04 07:28:12,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:28:12,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:28:12,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:28:13,068 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:28:13,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:28:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113918526] [2023-08-04 07:28:13,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113918526] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:28:13,068 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:28:13,068 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 07:28:13,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682244770] [2023-08-04 07:28:13,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:28:13,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:28:13,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:28:13,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:28:13,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:28:13,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 267 [2023-08-04 07:28:13,071 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 51 transitions, 165 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:28:13,071 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:28:13,071 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 267 [2023-08-04 07:28:13,071 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:28:25,586 INFO L124 PetriNetUnfolderBase]: 144616/188263 cut-off events. [2023-08-04 07:28:25,586 INFO L125 PetriNetUnfolderBase]: For 3133/3133 co-relation queries the response was YES. [2023-08-04 07:28:26,044 INFO L83 FinitePrefix]: Finished finitePrefix Result has 371382 conditions, 188263 events. 144616/188263 cut-off events. For 3133/3133 co-relation queries the response was YES. Maximal size of possible extension queue 6421. Compared 1209700 event pairs, 24520 based on Foata normal form. 0/167526 useless extension candidates. Maximal degree in co-relation 131610. Up to 164161 conditions per place. [2023-08-04 07:28:26,581 INFO L140 encePairwiseOnDemand]: 262/267 looper letters, 59 selfloop transitions, 3 changer transitions 0/72 dead transitions. [2023-08-04 07:28:26,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 72 transitions, 336 flow [2023-08-04 07:28:26,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:28:26,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:28:26,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 446 transitions. [2023-08-04 07:28:26,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5568039950062422 [2023-08-04 07:28:26,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 446 transitions. [2023-08-04 07:28:26,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 446 transitions. [2023-08-04 07:28:26,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:28:26,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 446 transitions. [2023-08-04 07:28:26,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 148.66666666666666) internal successors, (446), 3 states have internal predecessors, (446), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 07:28:26,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:28:26,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:28:26,586 INFO L175 Difference]: Start difference. First operand has 73 places, 51 transitions, 165 flow. Second operand 3 states and 446 transitions. [2023-08-04 07:28:26,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 72 transitions, 336 flow [2023-08-04 07:28:26,589 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 72 transitions, 329 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 07:28:26,590 INFO L231 Difference]: Finished difference. Result has 73 places, 53 transitions, 179 flow [2023-08-04 07:28:26,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=158, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=179, PETRI_PLACES=73, PETRI_TRANSITIONS=53} [2023-08-04 07:28:26,590 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 11 predicate places. [2023-08-04 07:28:26,590 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 53 transitions, 179 flow [2023-08-04 07:28:26,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 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 07:28:26,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:28:26,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:28:26,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-04 07:28:26,591 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:28:26,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:28:26,591 INFO L85 PathProgramCache]: Analyzing trace with hash -326828905, now seen corresponding path program 1 times [2023-08-04 07:28:26,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:28:26,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [816373156] [2023-08-04 07:28:26,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:28:26,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:28:26,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 07:28:26,639 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-04 07:28:26,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 07:28:26,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [816373156] [2023-08-04 07:28:26,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [816373156] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 07:28:26,639 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 07:28:26,639 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 07:28:26,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984358844] [2023-08-04 07:28:26,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 07:28:26,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 07:28:26,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 07:28:26,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 07:28:26,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 07:28:26,648 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 267 [2023-08-04 07:28:26,648 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 53 transitions, 179 flow. Second operand has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 07:28:26,649 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 07:28:26,649 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 267 [2023-08-04 07:28:26,649 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 07:28:39,703 INFO L124 PetriNetUnfolderBase]: 142168/182071 cut-off events. [2023-08-04 07:28:39,703 INFO L125 PetriNetUnfolderBase]: For 11680/11680 co-relation queries the response was YES. [2023-08-04 07:28:40,190 INFO L83 FinitePrefix]: Finished finitePrefix Result has 385342 conditions, 182071 events. 142168/182071 cut-off events. For 11680/11680 co-relation queries the response was YES. Maximal size of possible extension queue 6274. Compared 1131523 event pairs, 118120 based on Foata normal form. 0/162054 useless extension candidates. Maximal degree in co-relation 136071. Up to 173284 conditions per place. [2023-08-04 07:28:40,713 INFO L140 encePairwiseOnDemand]: 263/267 looper letters, 56 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-04 07:28:40,713 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 68 transitions, 328 flow [2023-08-04 07:28:40,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 07:28:40,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 07:28:40,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 431 transitions. [2023-08-04 07:28:40,714 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5380774032459426 [2023-08-04 07:28:40,714 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 431 transitions. [2023-08-04 07:28:40,715 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 431 transitions. [2023-08-04 07:28:40,715 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 07:28:40,715 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 431 transitions. [2023-08-04 07:28:40,715 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.66666666666666) internal successors, (431), 3 states have internal predecessors, (431), 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 07:28:40,716 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:28:40,716 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 267.0) internal successors, (1068), 4 states have internal predecessors, (1068), 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 07:28:40,717 INFO L175 Difference]: Start difference. First operand has 73 places, 53 transitions, 179 flow. Second operand 3 states and 431 transitions. [2023-08-04 07:28:40,717 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 68 transitions, 328 flow [2023-08-04 07:28:40,719 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 74 places, 68 transitions, 324 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 07:28:40,720 INFO L231 Difference]: Finished difference. Result has 75 places, 54 transitions, 190 flow [2023-08-04 07:28:40,720 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=267, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=190, PETRI_PLACES=75, PETRI_TRANSITIONS=54} [2023-08-04 07:28:40,720 INFO L281 CegarLoopForPetriNet]: 62 programPoint places, 13 predicate places. [2023-08-04 07:28:40,720 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 54 transitions, 190 flow [2023-08-04 07:28:40,721 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.0) internal successors, (390), 3 states have internal predecessors, (390), 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 07:28:40,721 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 07:28:40,721 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:28:40,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-04 07:28:40,722 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 07:28:40,722 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 07:28:40,722 INFO L85 PathProgramCache]: Analyzing trace with hash -768289899, now seen corresponding path program 1 times [2023-08-04 07:28:40,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 07:28:40,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1721774013] [2023-08-04 07:28:40,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 07:28:40,722 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 07:28:40,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:28:40,735 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 07:28:40,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 07:28:40,750 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 07:28:40,750 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 07:28:40,750 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 07:28:40,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 07:28:40,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 07:28:40,750 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 07:28:40,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-04 07:28:40,751 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-04 07:28:40,751 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 07:28:40,752 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 07:28:40,752 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 07:28:40,794 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 07:28:40 BasicIcfg [2023-08-04 07:28:40,794 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 07:28:40,794 INFO L158 Benchmark]: Toolchain (without parser) took 129377.16ms. Allocated memory was 394.3MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 352.9MB in the beginning and 11.3GB in the end (delta: -11.0GB). Peak memory consumption was 4.6GB. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 394.3MB. Free memory is still 342.0MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.65ms. Allocated memory is still 394.3MB. Free memory was 352.9MB in the beginning and 328.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: Boogie Procedure Inliner took 40.68ms. Allocated memory is still 394.3MB. Free memory was 328.8MB in the beginning and 326.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: Boogie Preprocessor took 27.39ms. Allocated memory is still 394.3MB. Free memory was 326.7MB in the beginning and 324.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: RCFGBuilder took 463.43ms. Allocated memory is still 394.3MB. Free memory was 324.6MB in the beginning and 287.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. [2023-08-04 07:28:40,795 INFO L158 Benchmark]: TraceAbstraction took 128402.92ms. Allocated memory was 394.3MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 287.9MB in the beginning and 11.3GB in the end (delta: -11.1GB). Peak memory consumption was 4.5GB. Max. memory is 16.0GB. [2023-08-04 07:28:40,796 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.08ms. Allocated memory is still 394.3MB. Free memory is still 342.0MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 437.65ms. Allocated memory is still 394.3MB. Free memory was 352.9MB in the beginning and 328.8MB in the end (delta: 24.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 40.68ms. Allocated memory is still 394.3MB. Free memory was 328.8MB in the beginning and 326.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 27.39ms. Allocated memory is still 394.3MB. Free memory was 326.7MB in the beginning and 324.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 463.43ms. Allocated memory is still 394.3MB. Free memory was 324.6MB in the beginning and 287.9MB in the end (delta: 36.7MB). Peak memory consumption was 35.7MB. Max. memory is 16.0GB. * TraceAbstraction took 128402.92ms. Allocated memory was 394.3MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 287.9MB in the beginning and 11.3GB in the end (delta: -11.1GB). Peak memory consumption was 4.5GB. 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: 3.0s, 127 PlacesBefore, 38 PlacesAfterwards, 125 TransitionsBefore, 32 TransitionsAfterwards, 2462 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 53 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 107 TotalNumberOfCompositions, 5381 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2487, independent: 2341, independent conditional: 0, independent unconditional: 2341, dependent: 146, dependent conditional: 0, dependent unconditional: 146, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1249, independent: 1226, independent conditional: 0, independent unconditional: 1226, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2487, independent: 1115, independent conditional: 0, independent unconditional: 1115, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 1249, unknown conditional: 0, unknown unconditional: 1249] , Statistics on independence cache: Total cache size (in pairs): 108, Positive cache size: 96, Positive conditional cache size: 0, Positive unconditional cache size: 96, 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: 2.2s, 103 PlacesBefore, 33 PlacesAfterwards, 98 TransitionsBefore, 26 TransitionsAfterwards, 1282 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 9 ConcurrentYvCompositions, 2 ChoiceCompositions, 78 TotalNumberOfCompositions, 2888 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1625, independent: 1517, independent conditional: 0, independent unconditional: 1517, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 651, independent: 638, independent conditional: 0, independent unconditional: 638, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1625, independent: 879, independent conditional: 0, independent unconditional: 879, dependent: 95, dependent conditional: 0, dependent unconditional: 95, unknown: 651, unknown conditional: 0, unknown unconditional: 651] , Statistics on independence cache: Total cache size (in pairs): 79, Positive cache size: 72, Positive conditional cache size: 0, Positive unconditional cache size: 72, Negative cache size: 7, Negative conditional cache size: 0, Negative unconditional cache size: 7, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 157 PlacesBefore, 62 PlacesAfterwards, 149 TransitionsBefore, 50 TransitionsAfterwards, 5924 CoEnabledTransitionPairs, 6 FixpointIterations, 35 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 116 TotalNumberOfCompositions, 15992 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6431, independent: 6174, independent conditional: 0, independent unconditional: 6174, dependent: 257, dependent conditional: 0, dependent unconditional: 257, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2993, independent: 2937, independent conditional: 0, independent unconditional: 2937, dependent: 56, dependent conditional: 0, dependent unconditional: 56, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6431, independent: 3237, independent conditional: 0, independent unconditional: 3237, dependent: 201, dependent conditional: 0, dependent unconditional: 201, unknown: 2993, unknown conditional: 0, unknown unconditional: 2993] , Statistics on independence cache: Total cache size (in pairs): 300, Positive cache size: 275, Positive conditional cache size: 0, Positive unconditional cache size: 275, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, 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: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p0_EAX = 0; [L712] 0 _Bool main$tmp_guard0; [L713] 0 _Bool main$tmp_guard1; [L715] 0 int x = 0; [L717] 0 int y = 0; [L718] 0 _Bool y$flush_delayed; [L719] 0 int y$mem_tmp; [L720] 0 _Bool y$r_buff0_thd0; [L721] 0 _Bool y$r_buff0_thd1; [L722] 0 _Bool y$r_buff0_thd2; [L723] 0 _Bool y$r_buff0_thd3; [L724] 0 _Bool y$r_buff1_thd0; [L725] 0 _Bool y$r_buff1_thd1; [L726] 0 _Bool y$r_buff1_thd2; [L727] 0 _Bool y$r_buff1_thd3; [L728] 0 _Bool y$read_delayed; [L729] 0 int *y$read_delayed_var; [L730] 0 int y$w_buff0; [L731] 0 _Bool y$w_buff0_used; [L732] 0 int y$w_buff1; [L733] 0 _Bool y$w_buff1_used; [L735] 0 int z = 0; [L736] 0 _Bool weak$$choice0; [L737] 0 _Bool weak$$choice2; [L815] 0 pthread_t t2516[2]; [L816] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t2516[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2516[asdf], ((void *)0), P0, ((void *)0))=-3, t2516={5:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L816] COND TRUE 0 asdf<2 [L816] FCALL, FORK 0 pthread_create(&t2516[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2516[asdf], ((void *)0), P0, ((void *)0))=-2, t2516={5:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L816] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L816] COND FALSE 0 !(asdf<2) [L817] 0 pthread_t t2517[2]; [L818] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, t2517={6:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L818] COND TRUE 0 asdf<2 [L818] FCALL, FORK 0 pthread_create(&t2517[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2517[asdf], ((void *)0), P1, ((void *)0))=-1, t2516={5:0}, t2517={6:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L818] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, t2517={6:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L818] COND TRUE 0 asdf<2 [L818] FCALL, FORK 0 pthread_create(&t2517[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2517[asdf], ((void *)0), P1, ((void *)0))=0, t2516={5:0}, t2517={6:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L818] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, t2517={6:0}, 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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L818] COND FALSE 0 !(asdf<2) [L819] 0 pthread_t t2518[2]; [L820] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, t2517={6:0}, t2518={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L820] COND TRUE 0 asdf<2 [L820] FCALL, FORK 0 pthread_create(&t2518[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2518[asdf], ((void *)0), P2, ((void *)0))=1, t2516={5:0}, t2517={6:0}, t2518={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_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L778] 5 y$w_buff1 = y$w_buff0 [L779] 5 y$w_buff0 = 2 [L780] 5 y$w_buff1_used = y$w_buff0_used [L781] 5 y$w_buff0_used = (_Bool)1 [L782] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L782] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L783] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L784] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L785] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L786] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L787] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L820] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t2516={5:0}, t2517={6:0}, t2518={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_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L820] COND TRUE 0 asdf<2 [L820] FCALL, FORK 0 pthread_create(&t2518[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t2518[asdf], ((void *)0), P2, ((void *)0))=2, t2516={5:0}, t2517={6:0}, t2518={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_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=0] [L778] 6 y$w_buff1 = y$w_buff0 [L779] 6 y$w_buff0 = 2 [L780] 6 y$w_buff1_used = y$w_buff0_used [L781] 6 y$w_buff0_used = (_Bool)1 [L782] CALL 6 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p0_EAX=0, arg={0:0}, arg={0:0}, expression=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=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=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, z=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 7 procedures, 147 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: 4.7s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 58 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 35 mSDsluCounter, 1 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 9 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 157 IncrementalHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 9 mSolverCounterUnsat, 1 mSDtfsCounter, 157 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=85occurred in iteration=2, InterpolantAutomatonStates: 10, 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, 0.3s InterpolantComputationTime, 48 NumberOfCodeBlocks, 48 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 90 SizeOfPredicates, 0 NumberOfNonLiveVariables, 349 ConjunctsInSsa, 5 ConjunctsInUnsatCore, 6 InterpolantComputations, 2 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 10 procedures, 171 locations, 7 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: 121.1s, OverallIterations: 7, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 116.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 143 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 100 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 25 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 613 IncrementalHoareTripleChecker+Invalid, 638 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 25 mSolverCounterUnsat, 4 mSDtfsCounter, 613 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 85 GetRequests, 69 SyntacticMatches, 4 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=190occurred in iteration=6, InterpolantAutomatonStates: 20, 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, 0.3s InterpolantComputationTime, 162 NumberOfCodeBlocks, 162 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 156 ConstructedInterpolants, 0 QuantifiedInterpolants, 274 SizeOfPredicates, 0 NumberOfNonLiveVariables, 555 ConjunctsInSsa, 8 ConjunctsInUnsatCore, 11 InterpolantComputations, 4 PerfectInterpolantSequences, 46/53 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 7 procedures, 147 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: 2.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.2s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 18 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 2 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 50 IncrementalHoareTripleChecker+Invalid, 52 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 2 mSolverCounterUnsat, 0 mSDtfsCounter, 50 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=75occurred 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, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 5 ConstructedInterpolants, 0 QuantifiedInterpolants, 7 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 07:28:40,817 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...