/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/ldv-races_race-1_3-join_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 04:38:49,654 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 04:38:49,692 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 04:38:49,695 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 04:38:49,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 04:38:49,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 04:38:49,695 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 04:38:49,729 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 04:38:49,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 04:38:49,729 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 04:38:49,730 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 04:38:49,730 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 04:38:49,730 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 04:38:49,730 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 04:38:49,731 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 04:38:49,731 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 04:38:49,731 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 04:38:49,731 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 04:38:49,732 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 04:38:49,732 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 04:38:49,732 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 04:38:49,735 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 04:38:49,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 04:38:49,736 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 04:38:49,738 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 04:38:49,738 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 04:38:49,738 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 04:38:49,739 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 04:38:49,740 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 04:38:49,740 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:38:49,741 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 04:38:49,741 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 04:38:49,742 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 04:38:49,742 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 04:38:49,742 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 04:38:49,742 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 04:38:49,742 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 04:38:49,934 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 04:38:49,946 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 04:38:49,948 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 04:38:49,948 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 04:38:49,949 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 04:38:49,949 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_3-join_bound2.i [2023-08-04 04:38:50,880 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 04:38:51,122 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 04:38:51,123 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_3-join_bound2.i [2023-08-04 04:38:51,143 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ba33384/34510c98029e4087931cf4a851eb15cf/FLAG3f4634be3 [2023-08-04 04:38:51,157 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c7ba33384/34510c98029e4087931cf4a851eb15cf [2023-08-04 04:38:51,160 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 04:38:51,163 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 04:38:51,165 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 04:38:51,166 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 04:38:51,167 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 04:38:51,168 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,168 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1944a946 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51, skipping insertion in model container [2023-08-04 04:38:51,169 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,210 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 04:38:51,667 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_3-join_bound2.i[76153,76166] [2023-08-04 04:38:51,678 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:38:51,690 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 04:38:51,710 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:38:51,712 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [237] [2023-08-04 04:38:51,716 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: unsigned short [729] [2023-08-04 04:38:51,740 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/ldv-races_race-1_3-join_bound2.i[76153,76166] [2023-08-04 04:38:51,744 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 04:38:51,827 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:38:51,827 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 04:38:51,832 INFO L206 MainTranslator]: Completed translation [2023-08-04 04:38:51,832 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51 WrapperNode [2023-08-04 04:38:51,832 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 04:38:51,833 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 04:38:51,833 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 04:38:51,833 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 04:38:51,837 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,871 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,890 INFO L138 Inliner]: procedures = 482, calls = 34, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 107 [2023-08-04 04:38:51,890 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 04:38:51,891 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 04:38:51,891 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 04:38:51,891 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 04:38:51,896 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,897 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,899 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,899 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,910 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,912 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,918 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,921 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 04:38:51,922 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 04:38:51,922 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 04:38:51,922 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 04:38:51,922 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (1/1) ... [2023-08-04 04:38:51,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 04:38:51,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:51,952 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 04:38:51,978 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 04:38:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 04:38:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 04:38:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 04:38:51,988 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 04:38:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2023-08-04 04:38:51,989 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 04:38:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 04:38:51,990 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 04:38:51,990 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 04:38:51,991 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 04:38:52,235 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 04:38:52,237 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 04:38:52,400 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 04:38:52,419 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 04:38:52,420 INFO L302 CfgBuilder]: Removed 2 assume(true) statements. [2023-08-04 04:38:52,422 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:38:52 BoogieIcfgContainer [2023-08-04 04:38:52,422 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 04:38:52,423 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 04:38:52,432 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 04:38:52,435 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 04:38:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 04:38:51" (1/3) ... [2023-08-04 04:38:52,435 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d58df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:38:52, skipping insertion in model container [2023-08-04 04:38:52,435 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 04:38:51" (2/3) ... [2023-08-04 04:38:52,436 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@256d58df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 04:38:52, skipping insertion in model container [2023-08-04 04:38:52,436 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 04:38:52" (3/3) ... [2023-08-04 04:38:52,437 INFO L112 eAbstractionObserver]: Analyzing ICFG ldv-races_race-1_3-join_bound2.i [2023-08-04 04:38:52,442 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 04:38:52,448 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 04:38:52,448 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2023-08-04 04:38:52,448 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 04:38:52,475 INFO L144 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2023-08-04 04:38:52,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:52,545 INFO L124 PetriNetUnfolderBase]: 12/149 cut-off events. [2023-08-04 04:38:52,546 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:52,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 12/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-04 04:38:52,549 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:52,551 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:52,553 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:52,559 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:52,569 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:52,569 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 94 places, 97 transitions, 200 flow [2023-08-04 04:38:52,601 INFO L124 PetriNetUnfolderBase]: 8/124 cut-off events. [2023-08-04 04:38:52,602 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:52,602 INFO L83 FinitePrefix]: Finished finitePrefix Result has 129 conditions, 124 events. 8/124 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 164 event pairs, 0 based on Foata normal form. 0/109 useless extension candidates. Maximal degree in co-relation 77. Up to 4 conditions per place. [2023-08-04 04:38:52,603 INFO L119 LiptonReduction]: Number of co-enabled transitions 448 [2023-08-04 04:38:54,831 INFO L134 LiptonReduction]: Checked pairs total: 471 [2023-08-04 04:38:54,831 INFO L136 LiptonReduction]: Total number of compositions: 104 [2023-08-04 04:38:54,840 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:38:54,845 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;@4e2316de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:54,845 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:38:54,846 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:54,847 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:38:54,847 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:54,847 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:54,847 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:38:54,847 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:54,853 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:54,853 INFO L85 PathProgramCache]: Analyzing trace with hash 428, now seen corresponding path program 1 times [2023-08-04 04:38:54,858 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:54,859 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [701385938] [2023-08-04 04:38:54,859 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:54,859 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:54,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:55,021 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:55,022 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:55,022 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [701385938] [2023-08-04 04:38:55,022 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [701385938] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:55,022 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:55,023 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:38:55,023 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [431026286] [2023-08-04 04:38:55,024 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:55,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:38:55,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:55,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:38:55,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:38:55,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 214 [2023-08-04 04:38:55,048 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 17 places, 16 transitions, 38 flow. Second operand has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:55,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 214 [2023-08-04 04:38:55,049 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:55,070 INFO L124 PetriNetUnfolderBase]: 9/36 cut-off events. [2023-08-04 04:38:55,070 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:55,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 78 conditions, 36 events. 9/36 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 86 event pairs, 8 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 50. Up to 37 conditions per place. [2023-08-04 04:38:55,071 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 13 selfloop transitions, 0 changer transitions 0/13 dead transitions. [2023-08-04 04:38:55,071 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 16 places, 13 transitions, 58 flow [2023-08-04 04:38:55,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:38:55,074 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:38:55,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 212 transitions. [2023-08-04 04:38:55,080 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4953271028037383 [2023-08-04 04:38:55,080 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 212 transitions. [2023-08-04 04:38:55,080 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 212 transitions. [2023-08-04 04:38:55,081 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:55,082 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 212 transitions. [2023-08-04 04:38:55,084 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 106.0) internal successors, (212), 2 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,087 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,087 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 214.0) internal successors, (642), 3 states have internal predecessors, (642), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,088 INFO L175 Difference]: Start difference. First operand has 17 places, 16 transitions, 38 flow. Second operand 2 states and 212 transitions. [2023-08-04 04:38:55,089 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 16 places, 13 transitions, 58 flow [2023-08-04 04:38:55,090 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 15 places, 13 transitions, 56 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:38:55,091 INFO L231 Difference]: Finished difference. Result has 15 places, 13 transitions, 30 flow [2023-08-04 04:38:55,092 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=14, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=13, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=30, PETRI_PLACES=15, PETRI_TRANSITIONS=13} [2023-08-04 04:38:55,094 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -2 predicate places. [2023-08-04 04:38:55,094 INFO L495 AbstractCegarLoop]: Abstraction has has 15 places, 13 transitions, 30 flow [2023-08-04 04:38:55,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 98.5) internal successors, (197), 2 states have internal predecessors, (197), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,094 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:55,094 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:38:55,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 04:38:55,095 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:55,095 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:55,095 INFO L85 PathProgramCache]: Analyzing trace with hash 424298, now seen corresponding path program 1 times [2023-08-04 04:38:55,095 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:55,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889059049] [2023-08-04 04:38:55,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:55,096 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:55,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:55,238 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:55,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:55,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889059049] [2023-08-04 04:38:55,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889059049] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:55,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:55,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:38:55,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1882995306] [2023-08-04 04:38:55,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:55,240 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:38:55,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:55,241 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:38:55,241 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:38:55,254 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 94 out of 214 [2023-08-04 04:38:55,255 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 15 places, 13 transitions, 30 flow. Second operand has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,255 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:55,255 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 94 of 214 [2023-08-04 04:38:55,255 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:55,279 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2023-08-04 04:38:55,280 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:55,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 72 conditions, 33 events. 8/33 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 46 event pairs, 0 based on Foata normal form. 0/26 useless extension candidates. Maximal degree in co-relation 68. Up to 30 conditions per place. [2023-08-04 04:38:55,281 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 12 selfloop transitions, 2 changer transitions 1/15 dead transitions. [2023-08-04 04:38:55,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 17 places, 15 transitions, 64 flow [2023-08-04 04:38:55,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:38:55,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:38:55,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 298 transitions. [2023-08-04 04:38:55,285 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46417445482866043 [2023-08-04 04:38:55,286 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 298 transitions. [2023-08-04 04:38:55,286 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 298 transitions. [2023-08-04 04:38:55,286 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:55,286 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 298 transitions. [2023-08-04 04:38:55,287 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 99.33333333333333) internal successors, (298), 3 states have internal predecessors, (298), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,289 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 214.0) internal successors, (856), 4 states have internal predecessors, (856), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,289 INFO L175 Difference]: Start difference. First operand has 15 places, 13 transitions, 30 flow. Second operand 3 states and 298 transitions. [2023-08-04 04:38:55,289 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 17 places, 15 transitions, 64 flow [2023-08-04 04:38:55,289 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 17 places, 15 transitions, 64 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:38:55,290 INFO L231 Difference]: Finished difference. Result has 18 places, 13 transitions, 38 flow [2023-08-04 04:38:55,290 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=30, PETRI_DIFFERENCE_MINUEND_PLACES=15, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=13, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=11, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=38, PETRI_PLACES=18, PETRI_TRANSITIONS=13} [2023-08-04 04:38:55,290 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, 1 predicate places. [2023-08-04 04:38:55,290 INFO L495 AbstractCegarLoop]: Abstraction has has 18 places, 13 transitions, 38 flow [2023-08-04 04:38:55,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 95.0) internal successors, (285), 3 states have internal predecessors, (285), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,291 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:55,291 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-04 04:38:55,291 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 04:38:55,291 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:55,291 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:55,291 INFO L85 PathProgramCache]: Analyzing trace with hash -262291321, now seen corresponding path program 1 times [2023-08-04 04:38:55,292 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:55,292 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708115084] [2023-08-04 04:38:55,292 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:55,292 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:55,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:55,353 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:55,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:55,353 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708115084] [2023-08-04 04:38:55,353 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708115084] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:38:55,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1685543559] [2023-08-04 04:38:55,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:55,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:55,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:55,357 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:38:55,397 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 04:38:55,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:55,461 INFO L262 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:38:55,464 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:38:55,498 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:55,499 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:38:55,509 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:55,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1685543559] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:38:55,509 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:38:55,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:38:55,510 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967637131] [2023-08-04 04:38:55,510 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:38:55,510 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:38:55,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:55,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:38:55,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:38:55,523 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 93 out of 214 [2023-08-04 04:38:55,523 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 18 places, 13 transitions, 38 flow. Second operand has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:55,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 93 of 214 [2023-08-04 04:38:55,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:55,534 INFO L124 PetriNetUnfolderBase]: 2/10 cut-off events. [2023-08-04 04:38:55,534 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:55,534 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32 conditions, 10 events. 2/10 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 6 event pairs, 0 based on Foata normal form. 2/12 useless extension candidates. Maximal degree in co-relation 26. Up to 6 conditions per place. [2023-08-04 04:38:55,534 INFO L140 encePairwiseOnDemand]: 211/214 looper letters, 0 selfloop transitions, 0 changer transitions 7/7 dead transitions. [2023-08-04 04:38:55,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 14 places, 7 transitions, 36 flow [2023-08-04 04:38:55,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:38:55,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:38:55,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 380 transitions. [2023-08-04 04:38:55,535 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4439252336448598 [2023-08-04 04:38:55,535 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 380 transitions. [2023-08-04 04:38:55,535 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 380 transitions. [2023-08-04 04:38:55,536 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:55,536 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 380 transitions. [2023-08-04 04:38:55,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 95.0) internal successors, (380), 4 states have internal predecessors, (380), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,538 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,538 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 214.0) internal successors, (1070), 5 states have internal predecessors, (1070), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,538 INFO L175 Difference]: Start difference. First operand has 18 places, 13 transitions, 38 flow. Second operand 4 states and 380 transitions. [2023-08-04 04:38:55,539 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 14 places, 7 transitions, 36 flow [2023-08-04 04:38:55,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 11 places, 7 transitions, 30 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 04:38:55,539 INFO L231 Difference]: Finished difference. Result has 11 places, 0 transitions, 0 flow [2023-08-04 04:38:55,539 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=214, PETRI_DIFFERENCE_MINUEND_FLOW=12, PETRI_DIFFERENCE_MINUEND_PLACES=8, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=5, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=5, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=11, PETRI_TRANSITIONS=0} [2023-08-04 04:38:55,539 INFO L281 CegarLoopForPetriNet]: 17 programPoint places, -6 predicate places. [2023-08-04 04:38:55,540 INFO L495 AbstractCegarLoop]: Abstraction has has 11 places, 0 transitions, 0 flow [2023-08-04 04:38:55,540 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 95.0) internal successors, (475), 5 states have internal predecessors, (475), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:55,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:38:55,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:38:55,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:38:55,542 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:38:55,550 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 04:38:55,749 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:55,749 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 04:38:55,751 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE,SAFE (1/2) [2023-08-04 04:38:55,753 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:55,772 INFO L124 PetriNetUnfolderBase]: 12/149 cut-off events. [2023-08-04 04:38:55,772 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-04 04:38:55,772 INFO L83 FinitePrefix]: Finished finitePrefix Result has 155 conditions, 149 events. 12/149 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 261 event pairs, 0 based on Foata normal form. 0/128 useless extension candidates. Maximal degree in co-relation 89. Up to 4 conditions per place. [2023-08-04 04:38:55,772 INFO L82 GeneralOperation]: Start removeDead. Operand has 105 places, 110 transitions, 228 flow [2023-08-04 04:38:55,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:55,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:55,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:55,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:55,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 57 places, 55 transitions, 115 flow [2023-08-04 04:38:55,782 INFO L124 PetriNetUnfolderBase]: 1/59 cut-off events. [2023-08-04 04:38:55,782 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:55,783 INFO L83 FinitePrefix]: Finished finitePrefix Result has 64 conditions, 59 events. 1/59 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 17 event pairs, 0 based on Foata normal form. 0/58 useless extension candidates. Maximal degree in co-relation 41. Up to 2 conditions per place. [2023-08-04 04:38:55,783 INFO L119 LiptonReduction]: Number of co-enabled transitions 140 [2023-08-04 04:38:57,583 INFO L134 LiptonReduction]: Checked pairs total: 90 [2023-08-04 04:38:57,583 INFO L136 LiptonReduction]: Total number of compositions: 59 [2023-08-04 04:38:57,585 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 04:38:57,589 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;@4e2316de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:57,589 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-08-04 04:38:57,605 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:57,605 INFO L124 PetriNetUnfolderBase]: 0/4 cut-off events. [2023-08-04 04:38:57,605 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:57,605 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:57,605 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1] [2023-08-04 04:38:57,605 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2023-08-04 04:38:57,606 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:57,606 INFO L85 PathProgramCache]: Analyzing trace with hash 14895329, now seen corresponding path program 1 times [2023-08-04 04:38:57,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:57,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438052397] [2023-08-04 04:38:57,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:57,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:57,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:57,633 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:38:57,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:38:57,653 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:38:57,653 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:38:57,653 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 1 remaining) [2023-08-04 04:38:57,653 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 04:38:57,653 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 04:38:57,654 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE (2/2) [2023-08-04 04:38:57,654 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 04:38:57,654 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 04:38:57,663 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2023-08-04 04:38:57,664 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 119 transitions, 256 flow [2023-08-04 04:38:57,693 INFO L124 PetriNetUnfolderBase]: 20/236 cut-off events. [2023-08-04 04:38:57,693 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 04:38:57,694 INFO L83 FinitePrefix]: Finished finitePrefix Result has 250 conditions, 236 events. 20/236 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 536 event pairs, 0 based on Foata normal form. 0/203 useless extension candidates. Maximal degree in co-relation 151. Up to 8 conditions per place. [2023-08-04 04:38:57,694 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 119 transitions, 256 flow [2023-08-04 04:38:57,694 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:57,694 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 04:38:57,695 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:57,695 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:57,695 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 104 places, 106 transitions, 226 flow [2023-08-04 04:38:57,703 INFO L124 PetriNetUnfolderBase]: 13/189 cut-off events. [2023-08-04 04:38:57,703 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2023-08-04 04:38:57,704 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201 conditions, 189 events. 13/189 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 337 event pairs, 0 based on Foata normal form. 0/167 useless extension candidates. Maximal degree in co-relation 127. Up to 8 conditions per place. [2023-08-04 04:38:57,717 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-08-04 04:38:59,501 INFO L134 LiptonReduction]: Checked pairs total: 2765 [2023-08-04 04:38:59,501 INFO L136 LiptonReduction]: Total number of compositions: 106 [2023-08-04 04:38:59,502 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 04:38:59,503 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;@4e2316de, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 04:38:59,503 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 04:38:59,503 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 04:38:59,503 INFO L124 PetriNetUnfolderBase]: 0/0 cut-off events. [2023-08-04 04:38:59,503 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 04:38:59,504 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:59,504 INFO L208 CegarLoopForPetriNet]: trace histogram [1] [2023-08-04 04:38:59,504 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:59,504 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:59,504 INFO L85 PathProgramCache]: Analyzing trace with hash 720, now seen corresponding path program 1 times [2023-08-04 04:38:59,504 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:59,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1332293916] [2023-08-04 04:38:59,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:59,504 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:59,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:59,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:59,517 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:59,517 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1332293916] [2023-08-04 04:38:59,517 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1332293916] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:59,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:59,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [0] imperfect sequences [] total 0 [2023-08-04 04:38:59,517 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81933947] [2023-08-04 04:38:59,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:59,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-08-04 04:38:59,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:59,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-08-04 04:38:59,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-08-04 04:38:59,519 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 105 out of 225 [2023-08-04 04:38:59,519 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 27 places, 25 transitions, 64 flow. Second operand has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,519 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:59,519 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 105 of 225 [2023-08-04 04:38:59,519 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:59,571 INFO L124 PetriNetUnfolderBase]: 252/479 cut-off events. [2023-08-04 04:38:59,571 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 04:38:59,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 972 conditions, 479 events. 252/479 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1917 event pairs, 246 based on Foata normal form. 0/412 useless extension candidates. Maximal degree in co-relation 199. Up to 466 conditions per place. [2023-08-04 04:38:59,575 INFO L140 encePairwiseOnDemand]: 222/225 looper letters, 20 selfloop transitions, 0 changer transitions 0/22 dead transitions. [2023-08-04 04:38:59,575 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 26 places, 22 transitions, 98 flow [2023-08-04 04:38:59,576 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-08-04 04:38:59,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2023-08-04 04:38:59,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 233 transitions. [2023-08-04 04:38:59,576 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5177777777777778 [2023-08-04 04:38:59,577 INFO L72 ComplementDD]: Start complementDD. Operand 2 states and 233 transitions. [2023-08-04 04:38:59,577 INFO L73 IsDeterministic]: Start isDeterministic. Operand 2 states and 233 transitions. [2023-08-04 04:38:59,577 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:59,577 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 2 states and 233 transitions. [2023-08-04 04:38:59,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 3 states, 2 states have (on average 116.5) internal successors, (233), 2 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,578 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,579 INFO L81 ComplementDD]: Finished complementDD. Result has 3 states, 3 states have (on average 225.0) internal successors, (675), 3 states have internal predecessors, (675), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,579 INFO L175 Difference]: Start difference. First operand has 27 places, 25 transitions, 64 flow. Second operand 2 states and 233 transitions. [2023-08-04 04:38:59,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 26 places, 22 transitions, 98 flow [2023-08-04 04:38:59,580 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 25 places, 22 transitions, 96 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:38:59,581 INFO L231 Difference]: Finished difference. Result has 25 places, 22 transitions, 56 flow [2023-08-04 04:38:59,581 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=24, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=56, PETRI_PLACES=25, PETRI_TRANSITIONS=22} [2023-08-04 04:38:59,583 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, -2 predicate places. [2023-08-04 04:38:59,583 INFO L495 AbstractCegarLoop]: Abstraction has has 25 places, 22 transitions, 56 flow [2023-08-04 04:38:59,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 105.5) internal successors, (211), 2 states have internal predecessors, (211), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:59,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1] [2023-08-04 04:38:59,583 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-08-04 04:38:59,584 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:59,584 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:59,584 INFO L85 PathProgramCache]: Analyzing trace with hash 715267, now seen corresponding path program 1 times [2023-08-04 04:38:59,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:59,585 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032984667] [2023-08-04 04:38:59,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:59,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:59,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:59,624 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:59,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:59,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032984667] [2023-08-04 04:38:59,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032984667] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:38:59,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:38:59,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:38:59,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055871286] [2023-08-04 04:38:59,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:38:59,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:38:59,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:59,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:38:59,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:38:59,634 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 101 out of 225 [2023-08-04 04:38:59,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 25 places, 22 transitions, 56 flow. Second operand has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,634 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:59,634 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 101 of 225 [2023-08-04 04:38:59,634 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:38:59,681 INFO L124 PetriNetUnfolderBase]: 251/476 cut-off events. [2023-08-04 04:38:59,681 INFO L125 PetriNetUnfolderBase]: For 13/13 co-relation queries the response was YES. [2023-08-04 04:38:59,682 INFO L83 FinitePrefix]: Finished finitePrefix Result has 963 conditions, 476 events. 251/476 cut-off events. For 13/13 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 1869 event pairs, 111 based on Foata normal form. 0/411 useless extension candidates. Maximal degree in co-relation 958. Up to 457 conditions per place. [2023-08-04 04:38:59,683 INFO L140 encePairwiseOnDemand]: 222/225 looper letters, 23 selfloop transitions, 2 changer transitions 0/27 dead transitions. [2023-08-04 04:38:59,683 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 27 places, 27 transitions, 116 flow [2023-08-04 04:38:59,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:38:59,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:38:59,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 329 transitions. [2023-08-04 04:38:59,684 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4874074074074074 [2023-08-04 04:38:59,684 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 329 transitions. [2023-08-04 04:38:59,684 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 329 transitions. [2023-08-04 04:38:59,685 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:38:59,685 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 329 transitions. [2023-08-04 04:38:59,685 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 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 04:38:59,686 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,687 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,687 INFO L175 Difference]: Start difference. First operand has 25 places, 22 transitions, 56 flow. Second operand 3 states and 329 transitions. [2023-08-04 04:38:59,687 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 27 places, 27 transitions, 116 flow [2023-08-04 04:38:59,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 27 places, 27 transitions, 116 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 04:38:59,688 INFO L231 Difference]: Finished difference. Result has 28 places, 23 transitions, 68 flow [2023-08-04 04:38:59,689 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=56, PETRI_DIFFERENCE_MINUEND_PLACES=25, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=22, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=68, PETRI_PLACES=28, PETRI_TRANSITIONS=23} [2023-08-04 04:38:59,690 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 1 predicate places. [2023-08-04 04:38:59,690 INFO L495 AbstractCegarLoop]: Abstraction has has 28 places, 23 transitions, 68 flow [2023-08-04 04:38:59,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 102.0) internal successors, (306), 3 states have internal predecessors, (306), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,690 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:38:59,690 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:38:59,690 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 04:38:59,690 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:38:59,691 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:38:59,691 INFO L85 PathProgramCache]: Analyzing trace with hash -1453563022, now seen corresponding path program 1 times [2023-08-04 04:38:59,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:38:59,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1091299720] [2023-08-04 04:38:59,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:59,695 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:38:59,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:59,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:59,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:38:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1091299720] [2023-08-04 04:38:59,761 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1091299720] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 04:38:59,761 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1766450045] [2023-08-04 04:38:59,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:38:59,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 04:38:59,762 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 04:38:59,779 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 04:38:59,780 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 04:38:59,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:38:59,857 INFO L262 TraceCheckSpWp]: Trace formula consists of 114 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 04:38:59,858 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 04:38:59,868 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:59,868 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 04:38:59,883 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 04:38:59,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1766450045] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 04:38:59,883 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 04:38:59,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 04:38:59,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1507844984] [2023-08-04 04:38:59,884 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 04:38:59,884 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 04:38:59,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:38:59,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 04:38:59,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 04:38:59,896 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 100 out of 225 [2023-08-04 04:38:59,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 28 places, 23 transitions, 68 flow. Second operand has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:38:59,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:38:59,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 100 of 225 [2023-08-04 04:38:59,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:39:00,001 INFO L124 PetriNetUnfolderBase]: 241/458 cut-off events. [2023-08-04 04:39:00,002 INFO L125 PetriNetUnfolderBase]: For 29/29 co-relation queries the response was YES. [2023-08-04 04:39:00,003 INFO L83 FinitePrefix]: Finished finitePrefix Result has 970 conditions, 458 events. 241/458 cut-off events. For 29/29 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1690 event pairs, 13 based on Foata normal form. 4/421 useless extension candidates. Maximal degree in co-relation 963. Up to 357 conditions per place. [2023-08-04 04:39:00,005 INFO L140 encePairwiseOnDemand]: 221/225 looper letters, 28 selfloop transitions, 3 changer transitions 1/34 dead transitions. [2023-08-04 04:39:00,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 31 places, 34 transitions, 154 flow [2023-08-04 04:39:00,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 04:39:00,006 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 04:39:00,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 433 transitions. [2023-08-04 04:39:00,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4811111111111111 [2023-08-04 04:39:00,007 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 433 transitions. [2023-08-04 04:39:00,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 433 transitions. [2023-08-04 04:39:00,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:39:00,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 433 transitions. [2023-08-04 04:39:00,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 108.25) internal successors, (433), 4 states have internal predecessors, (433), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,011 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 225.0) internal successors, (1125), 5 states have internal predecessors, (1125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,011 INFO L175 Difference]: Start difference. First operand has 28 places, 23 transitions, 68 flow. Second operand 4 states and 433 transitions. [2023-08-04 04:39:00,011 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 31 places, 34 transitions, 154 flow [2023-08-04 04:39:00,011 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 34 transitions, 152 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 04:39:00,012 INFO L231 Difference]: Finished difference. Result has 32 places, 23 transitions, 80 flow [2023-08-04 04:39:00,012 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=20, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=80, PETRI_PLACES=32, PETRI_TRANSITIONS=23} [2023-08-04 04:39:00,013 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 5 predicate places. [2023-08-04 04:39:00,013 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 23 transitions, 80 flow [2023-08-04 04:39:00,013 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 102.0) internal successors, (510), 5 states have internal predecessors, (510), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,013 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:39:00,013 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1] [2023-08-04 04:39:00,023 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 04:39:00,219 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,SelfDestructingSolverStorable6 [2023-08-04 04:39:00,219 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:39:00,219 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:39:00,220 INFO L85 PathProgramCache]: Analyzing trace with hash -244079390, now seen corresponding path program 1 times [2023-08-04 04:39:00,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:39:00,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529495502] [2023-08-04 04:39:00,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:39:00,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:39:00,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 04:39:00,307 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-04 04:39:00,307 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 04:39:00,307 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529495502] [2023-08-04 04:39:00,307 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529495502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 04:39:00,307 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 04:39:00,307 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 04:39:00,307 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658298550] [2023-08-04 04:39:00,307 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 04:39:00,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 04:39:00,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 04:39:00,308 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 04:39:00,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 04:39:00,322 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 225 [2023-08-04 04:39:00,322 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 23 transitions, 80 flow. Second operand has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,322 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 04:39:00,322 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 225 [2023-08-04 04:39:00,322 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 04:39:00,382 INFO L124 PetriNetUnfolderBase]: 285/552 cut-off events. [2023-08-04 04:39:00,382 INFO L125 PetriNetUnfolderBase]: For 183/183 co-relation queries the response was YES. [2023-08-04 04:39:00,383 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1217 conditions, 552 events. 285/552 cut-off events. For 183/183 co-relation queries the response was YES. Maximal size of possible extension queue 37. Compared 2289 event pairs, 153 based on Foata normal form. 0/494 useless extension candidates. Maximal degree in co-relation 1209. Up to 384 conditions per place. [2023-08-04 04:39:00,384 INFO L140 encePairwiseOnDemand]: 219/225 looper letters, 28 selfloop transitions, 5 changer transitions 0/35 dead transitions. [2023-08-04 04:39:00,384 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 35 transitions, 175 flow [2023-08-04 04:39:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 04:39:00,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 04:39:00,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 327 transitions. [2023-08-04 04:39:00,386 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.48444444444444446 [2023-08-04 04:39:00,386 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 327 transitions. [2023-08-04 04:39:00,386 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 327 transitions. [2023-08-04 04:39:00,386 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 04:39:00,386 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 327 transitions. [2023-08-04 04:39:00,386 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 109.0) internal successors, (327), 3 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,388 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,388 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 225.0) internal successors, (900), 4 states have internal predecessors, (900), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,388 INFO L175 Difference]: Start difference. First operand has 32 places, 23 transitions, 80 flow. Second operand 3 states and 327 transitions. [2023-08-04 04:39:00,388 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 35 transitions, 175 flow [2023-08-04 04:39:00,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 35 transitions, 166 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 04:39:00,390 INFO L231 Difference]: Finished difference. Result has 33 places, 27 transitions, 110 flow [2023-08-04 04:39:00,391 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=225, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=110, PETRI_PLACES=33, PETRI_TRANSITIONS=27} [2023-08-04 04:39:00,391 INFO L281 CegarLoopForPetriNet]: 27 programPoint places, 6 predicate places. [2023-08-04 04:39:00,391 INFO L495 AbstractCegarLoop]: Abstraction has has 33 places, 27 transitions, 110 flow [2023-08-04 04:39:00,392 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 100.33333333333333) internal successors, (301), 3 states have internal predecessors, (301), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 04:39:00,392 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 04:39:00,392 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 04:39:00,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 04:39:00,392 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 04:39:00,392 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 04:39:00,392 INFO L85 PathProgramCache]: Analyzing trace with hash 1412348060, now seen corresponding path program 1 times [2023-08-04 04:39:00,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 04:39:00,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608248236] [2023-08-04 04:39:00,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 04:39:00,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 04:39:00,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:39:00,417 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 04:39:00,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 04:39:00,433 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 04:39:00,433 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 04:39:00,434 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 04:39:00,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 04:39:00,434 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 04:39:00,435 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 04:39:00,435 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-04 04:39:00,435 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 04:39:00,436 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 04:39:00,437 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 04:39:00,437 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 04:39:00,473 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 04:39:00 BasicIcfg [2023-08-04 04:39:00,473 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 04:39:00,473 INFO L158 Benchmark]: Toolchain (without parser) took 9310.46ms. Allocated memory was 354.4MB in the beginning and 509.6MB in the end (delta: 155.2MB). Free memory was 297.8MB in the beginning and 368.3MB in the end (delta: -70.5MB). Peak memory consumption was 87.6MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,473 INFO L158 Benchmark]: CDTParser took 0.08ms. Allocated memory is still 354.4MB. Free memory was 305.0MB in the beginning and 305.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 04:39:00,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 667.22ms. Allocated memory was 354.4MB in the beginning and 509.6MB in the end (delta: 155.2MB). Free memory was 297.8MB in the beginning and 452.0MB in the end (delta: -154.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,474 INFO L158 Benchmark]: Boogie Procedure Inliner took 57.19ms. Allocated memory is still 509.6MB. Free memory was 452.0MB in the beginning and 448.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,474 INFO L158 Benchmark]: Boogie Preprocessor took 30.37ms. Allocated memory is still 509.6MB. Free memory was 448.6MB in the beginning and 445.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,474 INFO L158 Benchmark]: RCFGBuilder took 500.20ms. Allocated memory is still 509.6MB. Free memory was 445.7MB in the beginning and 423.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,474 INFO L158 Benchmark]: TraceAbstraction took 8049.57ms. Allocated memory is still 509.6MB. Free memory was 423.9MB in the beginning and 368.3MB in the end (delta: 55.6MB). Peak memory consumption was 56.1MB. Max. memory is 16.0GB. [2023-08-04 04:39:00,475 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 354.4MB. Free memory was 305.0MB in the beginning and 305.0MB in the end (delta: 50.8kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 667.22ms. Allocated memory was 354.4MB in the beginning and 509.6MB in the end (delta: 155.2MB). Free memory was 297.8MB in the beginning and 452.0MB in the end (delta: -154.2MB). Peak memory consumption was 48.2MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 57.19ms. Allocated memory is still 509.6MB. Free memory was 452.0MB in the beginning and 448.6MB in the end (delta: 3.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 30.37ms. Allocated memory is still 509.6MB. Free memory was 448.6MB in the beginning and 445.7MB in the end (delta: 2.9MB). Peak memory consumption was 4.2MB. Max. memory is 16.0GB. * RCFGBuilder took 500.20ms. Allocated memory is still 509.6MB. Free memory was 445.7MB in the beginning and 423.9MB in the end (delta: 21.8MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * TraceAbstraction took 8049.57ms. Allocated memory is still 509.6MB. Free memory was 423.9MB in the beginning and 368.3MB in the end (delta: 55.6MB). Peak memory consumption was 56.1MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 237]: Unsoundness Warning unspecified type, defaulting to int C: short [237] - GenericResultAtLocation [Line: 729]: Unsoundness Warning unspecified type, defaulting to int C: unsigned short [729] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.3s, 94 PlacesBefore, 17 PlacesAfterwards, 97 TransitionsBefore, 16 TransitionsAfterwards, 448 CoEnabledTransitionPairs, 7 FixpointIterations, 59 TrivialSequentialCompositions, 24 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 11 ConcurrentYvCompositions, 4 ChoiceCompositions, 104 TotalNumberOfCompositions, 471 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 397, independent: 376, independent conditional: 0, independent unconditional: 376, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 245, independent: 234, independent conditional: 0, independent unconditional: 234, dependent: 11, dependent conditional: 0, dependent unconditional: 11, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 397, independent: 142, independent conditional: 0, independent unconditional: 142, dependent: 10, dependent conditional: 0, dependent unconditional: 10, unknown: 245, unknown conditional: 0, unknown unconditional: 245] , Statistics on independence cache: Total cache size (in pairs): 5, Positive cache size: 2, Positive conditional cache size: 0, Positive unconditional cache size: 2, Negative cache size: 3, Negative conditional cache size: 0, Negative unconditional cache size: 3, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 57 PlacesBefore, 8 PlacesAfterwards, 55 TransitionsBefore, 5 TransitionsAfterwards, 140 CoEnabledTransitionPairs, 7 FixpointIterations, 34 TrivialSequentialCompositions, 12 ConcurrentSequentialCompositions, 7 TrivialYvCompositions, 5 ConcurrentYvCompositions, 1 ChoiceCompositions, 59 TotalNumberOfCompositions, 90 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 90, independent: 90, independent conditional: 0, independent unconditional: 90, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 70, independent: 70, independent conditional: 0, independent unconditional: 70, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 90, independent: 20, independent conditional: 0, independent unconditional: 20, dependent: 0, dependent conditional: 0, dependent unconditional: 0, unknown: 70, unknown conditional: 0, unknown unconditional: 70] , Statistics on independence cache: Total cache size (in pairs): 0, Positive cache size: 0, Positive conditional cache size: 0, Positive unconditional cache size: 0, Negative cache size: 0, Negative conditional cache size: 0, Negative unconditional cache size: 0, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 1.8s, 104 PlacesBefore, 27 PlacesAfterwards, 106 TransitionsBefore, 25 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 8 FixpointIterations, 57 TrivialSequentialCompositions, 29 ConcurrentSequentialCompositions, 6 TrivialYvCompositions, 10 ConcurrentYvCompositions, 4 ChoiceCompositions, 106 TotalNumberOfCompositions, 2765 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1368, independent: 1266, independent conditional: 0, independent unconditional: 1266, dependent: 102, dependent conditional: 0, dependent unconditional: 102, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 612, independent: 589, independent conditional: 0, independent unconditional: 589, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1368, independent: 677, independent conditional: 0, independent unconditional: 677, dependent: 79, dependent conditional: 0, dependent unconditional: 79, unknown: 612, unknown conditional: 0, unknown unconditional: 612] , Statistics on independence cache: Total cache size (in pairs): 51, Positive cache size: 42, Positive conditional cache size: 0, Positive unconditional cache size: 42, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 1695]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L1696] 0 pthread_t t1[2]; [L1697] 0 pthread_mutex_t mutex; [L1698] 0 int pdev; [L1734] CALL, EXPR 0 module_init() [L1709] 0 pdev = 1 [L1710] CALL 0 ldv_assert(pdev==1) [L1695] COND FALSE 0 !(!expression) [L1710] RET 0 ldv_assert(pdev==1) [L1711] COND TRUE 0 __VERIFIER_nondet_int() [L1712] 0 int asdf=0; VAL [asdf=0, mutex={4:0}, pdev=1, t1={3:0}] [L1712] COND TRUE 0 asdf<2 [L1712] FCALL, FORK 0 pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, asdf=0, mutex={4:0}, pdev=1, pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0))=-2, t1={3:0}] [L1712] 0 asdf++ VAL [arg={0:0}, asdf=1, mutex={4:0}, pdev=1, t1={3:0}] [L1712] COND TRUE 0 asdf<2 [L1712] FCALL, FORK 0 pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0)) VAL [arg={0:0}, arg={0:0}, asdf=1, mutex={4:0}, pdev=1, pthread_create(&t1[asdf], ((void *)0), thread1, ((void *)0))=-1, pthread_mutex_lock(&mutex)=0, t1={3:0}] [L1712] 0 asdf++ VAL [arg={0:0}, arg={0:0}, asdf=2, mutex={4:0}, pdev=1, pthread_mutex_lock(&mutex)=0, t1={3:0}] [L1712] COND FALSE 0 !(asdf<2) [L1713] 0 return 0; [L1734] RET, EXPR 0 module_init() [L1734] COND FALSE 0 !(module_init()!=0) [L1735] CALL 0 module_exit() [L1721] 0 void *status; [L1723] 0 pdev = 4 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=4, pthread_mutex_lock(&mutex)=0, status={5:0}, t1={3:0}] [L1702] 1 pdev = 6 VAL [arg={0:0}, arg={0:0}, mutex={4:0}, pdev=6, t1={3:0}] [L1726] CALL 0 ldv_assert(pdev==4) [L1695] COND TRUE 0 !expression [L1695] 0 reach_error() VAL [\old(expression)=0, arg={0:0}, arg={0:0}, expression=0, mutex={4:0}, pdev=6, t1={3:0}] - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - UnprovableResult [Line: 1695]: 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 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.2s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 37 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 18 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 77 IncrementalHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 77 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=38occurred in iteration=0, InterpolantAutomatonStates: 9, 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, 16 NumberOfCodeBlocks, 16 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 17 ConstructedInterpolants, 0 QuantifiedInterpolants, 43 SizeOfPredicates, 0 NumberOfNonLiveVariables, 113 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 0/3 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 4 procedures, 119 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.8s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 79 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 42 mSDsluCounter, 12 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 11 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 215 IncrementalHoareTripleChecker+Invalid, 226 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 11 mSolverCounterUnsat, 12 mSDtfsCounter, 215 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=110occurred in iteration=4, InterpolantAutomatonStates: 12, 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, 0.2s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 64 SizeOfPredicates, 0 NumberOfNonLiveVariables, 114 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 6/9 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 3 procedures, 111 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 1.9s, OverallIterations: 1, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 1.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=15occurred in iteration=0, InterpolantAutomatonStates: 0, 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, 4 NumberOfCodeBlocks, 4 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-04 04:39:00,508 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...