/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked PROGRAM_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 05:46:01,697 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 05:46:01,783 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 05:46:01,788 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 05:46:01,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 05:46:01,789 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 05:46:01,790 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 05:46:01,817 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 05:46:01,817 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 05:46:01,821 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 05:46:01,822 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 05:46:01,822 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 05:46:01,823 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 05:46:01,824 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 05:46:01,825 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 05:46:01,825 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 05:46:01,825 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 05:46:01,825 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 05:46:01,826 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 05:46:01,826 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 05:46:01,826 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 05:46:01,826 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 05:46:01,827 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 05:46:01,827 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 05:46:01,827 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 05:46:01,828 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 05:46:01,829 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 05:46:01,829 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 05:46:01,829 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 05:46:01,830 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 05:46:01,830 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:46:01,831 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 05:46:01,831 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 05:46:01,831 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 05:46:01,831 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 05:46:01,831 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 05:46:01,832 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 05:46:01,832 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 05:46:01,832 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 05:46:01,832 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 05:46:01,832 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 05:46:01,833 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> PROGRAM_FIRST [2023-08-04 05:46:02,046 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 05:46:02,067 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 05:46:02,069 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 05:46:02,070 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 05:46:02,070 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 05:46:02,071 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-04 05:46:03,181 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 05:46:03,390 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 05:46:03,391 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-04 05:46:03,406 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172b905d0/5e3de41218c843afa02b7ead55bbb2c0/FLAGba79253e9 [2023-08-04 05:46:03,418 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/172b905d0/5e3de41218c843afa02b7ead55bbb2c0 [2023-08-04 05:46:03,420 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 05:46:03,421 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 05:46:03,424 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 05:46:03,425 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 05:46:03,431 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 05:46:03,431 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:03,432 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d89e902 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03, skipping insertion in model container [2023-08-04 05:46:03,432 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:03,474 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 05:46:03,634 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i[949,962] [2023-08-04 05:46:03,837 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:46:03,852 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 05:46:03,864 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i[949,962] [2023-08-04 05:46:03,873 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:46:03,875 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-04 05:46:03,918 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 05:46:03,949 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:46:03,949 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 05:46:03,955 INFO L206 MainTranslator]: Completed translation [2023-08-04 05:46:03,955 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03 WrapperNode [2023-08-04 05:46:03,956 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 05:46:03,957 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 05:46:03,957 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 05:46:03,958 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 05:46:03,964 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:03,999 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,044 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-04 05:46:04,044 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 05:46:04,045 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 05:46:04,045 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 05:46:04,045 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 05:46:04,054 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,054 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,058 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,059 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,068 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,078 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,080 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,081 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,086 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 05:46:04,087 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 05:46:04,087 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 05:46:04,087 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 05:46:04,088 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (1/1) ... [2023-08-04 05:46:04,094 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 05:46:04,118 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:04,132 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 05:46:04,157 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 05:46:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 05:46:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 05:46:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 05:46:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 05:46:04,174 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 05:46:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-04 05:46:04,176 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-04 05:46:04,176 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-04 05:46:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-04 05:46:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-04 05:46:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-04 05:46:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 05:46:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 05:46:04,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 05:46:04,177 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 05:46:04,179 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 05:46:04,315 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 05:46:04,316 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 05:46:04,650 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 05:46:04,776 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 05:46:04,777 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-04 05:46:04,779 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:46:04 BoogieIcfgContainer [2023-08-04 05:46:04,779 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 05:46:04,782 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 05:46:04,782 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 05:46:04,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 05:46:04,786 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 05:46:03" (1/3) ... [2023-08-04 05:46:04,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573652fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:46:04, skipping insertion in model container [2023-08-04 05:46:04,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 05:46:03" (2/3) ... [2023-08-04 05:46:04,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@573652fb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 05:46:04, skipping insertion in model container [2023-08-04 05:46:04,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 05:46:04" (3/3) ... [2023-08-04 05:46:04,789 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-04 05:46:04,797 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 05:46:04,806 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 05:46:04,806 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-04 05:46:04,806 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 05:46:04,864 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:46:04,905 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 05:46:05,072 INFO L124 PetriNetUnfolderBase]: 30/454 cut-off events. [2023-08-04 05:46:05,072 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:05,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 30/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2006 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-04 05:46:05,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 05:46:05,082 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 130 transitions, 273 flow [2023-08-04 05:46:05,086 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:05,093 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 130 transitions, 273 flow [2023-08-04 05:46:05,096 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 130 transitions, 273 flow [2023-08-04 05:46:05,096 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 130 transitions, 273 flow [2023-08-04 05:46:05,149 INFO L124 PetriNetUnfolderBase]: 30/453 cut-off events. [2023-08-04 05:46:05,149 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:05,152 INFO L83 FinitePrefix]: Finished finitePrefix Result has 477 conditions, 453 events. 30/453 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2004 event pairs, 0 based on Foata normal form. 0/399 useless extension candidates. Maximal degree in co-relation 269. Up to 16 conditions per place. [2023-08-04 05:46:05,159 INFO L119 LiptonReduction]: Number of co-enabled transitions 2792 [2023-08-04 05:46:08,797 INFO L134 LiptonReduction]: Checked pairs total: 7860 [2023-08-04 05:46:08,797 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-04 05:46:08,818 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:46:08,825 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;@5b6428df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:08,826 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:46:08,830 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:08,830 INFO L124 PetriNetUnfolderBase]: 1/13 cut-off events. [2023-08-04 05:46:08,830 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:08,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:08,831 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:46:08,831 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:08,834 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:08,835 INFO L85 PathProgramCache]: Analyzing trace with hash 541240163, now seen corresponding path program 1 times [2023-08-04 05:46:08,842 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:08,843 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1927047907] [2023-08-04 05:46:08,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:08,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:08,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:09,141 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 05:46:09,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:09,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1927047907] [2023-08-04 05:46:09,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1927047907] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:09,142 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:46:09,142 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:46:09,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [359242186] [2023-08-04 05:46:09,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:09,152 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:09,158 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:09,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:09,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:46:09,202 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 111 out of 241 [2023-08-04 05:46:09,207 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 35 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 05:46:09,207 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:09,207 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 111 of 241 [2023-08-04 05:46:09,208 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:09,656 INFO L124 PetriNetUnfolderBase]: 2161/3420 cut-off events. [2023-08-04 05:46:09,656 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 05:46:09,664 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6858 conditions, 3420 events. 2161/3420 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 190. Compared 19888 event pairs, 1876 based on Foata normal form. 120/2872 useless extension candidates. Maximal degree in co-relation 6845. Up to 3294 conditions per place. [2023-08-04 05:46:09,680 INFO L140 encePairwiseOnDemand]: 237/241 looper letters, 29 selfloop transitions, 2 changer transitions 1/38 dead transitions. [2023-08-04 05:46:09,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 38 transitions, 153 flow [2023-08-04 05:46:09,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:46:09,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:46:09,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 367 transitions. [2023-08-04 05:46:09,693 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5076071922544951 [2023-08-04 05:46:09,694 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 367 transitions. [2023-08-04 05:46:09,694 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 367 transitions. [2023-08-04 05:46:09,696 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:09,698 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 367 transitions. [2023-08-04 05:46:09,702 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 122.33333333333333) internal successors, (367), 3 states have internal predecessors, (367), 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 05:46:09,706 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 05:46:09,707 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 241.0) internal successors, (964), 4 states have internal predecessors, (964), 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 05:46:09,709 INFO L175 Difference]: Start difference. First operand has 41 places, 35 transitions, 83 flow. Second operand 3 states and 367 transitions. [2023-08-04 05:46:09,709 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 38 transitions, 153 flow [2023-08-04 05:46:09,711 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 38 transitions, 153 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 05:46:09,713 INFO L231 Difference]: Finished difference. Result has 44 places, 34 transitions, 89 flow [2023-08-04 05:46:09,715 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=81, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=89, PETRI_PLACES=44, PETRI_TRANSITIONS=34} [2023-08-04 05:46:09,718 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, 3 predicate places. [2023-08-04 05:46:09,718 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 34 transitions, 89 flow [2023-08-04 05:46:09,719 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 112.66666666666667) internal successors, (338), 3 states have internal predecessors, (338), 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 05:46:09,719 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:09,719 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:46:09,719 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 05:46:09,719 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [P1Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-08-04 05:46:09,720 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:09,720 INFO L85 PathProgramCache]: Analyzing trace with hash -1620278679, now seen corresponding path program 1 times [2023-08-04 05:46:09,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:09,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [65704647] [2023-08-04 05:46:09,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:09,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:09,826 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 05:46:09,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:09,826 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [65704647] [2023-08-04 05:46:09,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [65704647] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:46:09,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [55073153] [2023-08-04 05:46:09,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:09,827 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:09,827 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:46:09,837 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 05:46:09,866 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 05:46:09,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:09,932 INFO L262 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:46:09,936 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:46:09,973 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 05:46:09,973 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:46:09,993 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 05:46:09,993 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [55073153] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:46:09,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:46:09,994 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:46:09,994 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1182780036] [2023-08-04 05:46:09,995 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:46:09,995 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:46:09,995 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:09,996 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:46:09,996 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:46:10,024 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 110 out of 241 [2023-08-04 05:46:10,025 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 34 transitions, 89 flow. Second operand has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 05:46:10,025 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:10,026 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 110 of 241 [2023-08-04 05:46:10,026 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:46:10,057 INFO L124 PetriNetUnfolderBase]: 6/21 cut-off events. [2023-08-04 05:46:10,057 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2023-08-04 05:46:10,057 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59 conditions, 21 events. 6/21 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 31 event pairs, 0 based on Foata normal form. 4/25 useless extension candidates. Maximal degree in co-relation 52. Up to 14 conditions per place. [2023-08-04 05:46:10,058 INFO L140 encePairwiseOnDemand]: 238/241 looper letters, 0 selfloop transitions, 0 changer transitions 12/12 dead transitions. [2023-08-04 05:46:10,058 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 19 places, 12 transitions, 55 flow [2023-08-04 05:46:10,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:46:10,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:46:10,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 452 transitions. [2023-08-04 05:46:10,064 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.46887966804979253 [2023-08-04 05:46:10,064 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 452 transitions. [2023-08-04 05:46:10,064 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 452 transitions. [2023-08-04 05:46:10,065 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:46:10,065 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 452 transitions. [2023-08-04 05:46:10,066 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 113.0) internal successors, (452), 4 states have internal predecessors, (452), 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 05:46:10,070 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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 05:46:10,071 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 241.0) internal successors, (1205), 5 states have internal predecessors, (1205), 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 05:46:10,071 INFO L175 Difference]: Start difference. First operand has 44 places, 34 transitions, 89 flow. Second operand 4 states and 452 transitions. [2023-08-04 05:46:10,071 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 19 places, 12 transitions, 55 flow [2023-08-04 05:46:10,072 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 16 places, 12 transitions, 49 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-04 05:46:10,072 INFO L231 Difference]: Finished difference. Result has 16 places, 0 transitions, 0 flow [2023-08-04 05:46:10,072 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=241, PETRI_DIFFERENCE_MINUEND_FLOW=19, PETRI_DIFFERENCE_MINUEND_PLACES=13, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=8, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=8, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=16, PETRI_TRANSITIONS=0} [2023-08-04 05:46:10,073 INFO L281 CegarLoopForPetriNet]: 41 programPoint places, -25 predicate places. [2023-08-04 05:46:10,073 INFO L495 AbstractCegarLoop]: Abstraction has has 16 places, 0 transitions, 0 flow [2023-08-04 05:46:10,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 112.4) internal successors, (562), 5 states have internal predecessors, (562), 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 05:46:10,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 3 remaining) [2023-08-04 05:46:10,076 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 3 remaining) [2023-08-04 05:46:10,077 INFO L805 garLoopResultBuilder]: Registering result SAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 3 remaining) [2023-08-04 05:46:10,085 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 05:46:10,285 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:46:10,286 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-04 05:46:10,288 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was SAFE,SAFE,SAFE (1/2) [2023-08-04 05:46:10,293 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 05:46:10,335 INFO L124 PetriNetUnfolderBase]: 30/454 cut-off events. [2023-08-04 05:46:10,336 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:10,337 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 30/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2006 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-04 05:46:10,337 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-04 05:46:10,338 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 102 transitions, 219 flow [2023-08-04 05:46:10,338 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:10,338 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-04 05:46:10,339 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-04 05:46:10,339 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 102 transitions, 219 flow [2023-08-04 05:46:10,357 INFO L124 PetriNetUnfolderBase]: 6/222 cut-off events. [2023-08-04 05:46:10,358 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:10,358 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 222 events. 6/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-04 05:46:10,360 INFO L119 LiptonReduction]: Number of co-enabled transitions 1472 [2023-08-04 05:46:13,075 INFO L134 LiptonReduction]: Checked pairs total: 3965 [2023-08-04 05:46:13,075 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-04 05:46:13,077 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 05:46:13,078 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;@5b6428df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:13,078 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 05:46:13,083 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:13,083 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-04 05:46:13,083 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:13,083 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:13,083 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 05:46:13,083 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 05:46:13,084 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:13,084 INFO L85 PathProgramCache]: Analyzing trace with hash 1993775734, now seen corresponding path program 1 times [2023-08-04 05:46:13,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:13,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1390288435] [2023-08-04 05:46:13,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:13,085 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:13,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:46:13,121 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:46:13,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:46:13,159 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:46:13,159 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:46:13,160 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 05:46:13,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 05:46:13,160 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 05:46:13,160 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 05:46:13,160 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 05:46:13,164 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (2/2) [2023-08-04 05:46:13,165 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 05:46:13,165 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 05:46:13,212 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-04 05:46:13,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 157 transitions, 350 flow [2023-08-04 05:46:13,344 INFO L124 PetriNetUnfolderBase]: 93/1400 cut-off events. [2023-08-04 05:46:13,345 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-04 05:46:13,351 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 1400 events. 93/1400 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9702 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 1014. Up to 54 conditions per place. [2023-08-04 05:46:13,351 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 157 transitions, 350 flow [2023-08-04 05:46:13,355 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 156 transitions, 344 flow [2023-08-04 05:46:13,355 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 05:46:13,356 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 156 transitions, 344 flow [2023-08-04 05:46:13,356 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 156 transitions, 344 flow [2023-08-04 05:46:13,356 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 344 flow [2023-08-04 05:46:13,485 INFO L124 PetriNetUnfolderBase]: 93/1399 cut-off events. [2023-08-04 05:46:13,485 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-04 05:46:13,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1399 events. 93/1399 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9705 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 1011. Up to 54 conditions per place. [2023-08-04 05:46:13,516 INFO L119 LiptonReduction]: Number of co-enabled transitions 6776 [2023-08-04 05:46:16,770 INFO L134 LiptonReduction]: Checked pairs total: 20944 [2023-08-04 05:46:16,771 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-04 05:46:16,772 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-04 05:46:16,773 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;@5b6428df, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 05:46:16,773 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-04 05:46:16,776 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 05:46:16,776 INFO L124 PetriNetUnfolderBase]: 1/17 cut-off events. [2023-08-04 05:46:16,776 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 05:46:16,776 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:46:16,776 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-04 05:46:16,776 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:46:16,777 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:46:16,777 INFO L85 PathProgramCache]: Analyzing trace with hash 905778570, now seen corresponding path program 1 times [2023-08-04 05:46:16,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:46:16,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1770233409] [2023-08-04 05:46:16,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:46:16,777 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:46:16,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:46:16,836 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 05:46:16,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:46:16,837 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1770233409] [2023-08-04 05:46:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1770233409] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:46:16,839 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:46:16,839 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 05:46:16,839 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896975708] [2023-08-04 05:46:16,839 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:46:16,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:46:16,840 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:46:16,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:46:16,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:46:16,852 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-04 05:46:16,853 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 05:46:16,853 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:46:16,854 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-04 05:46:16,854 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:47:12,666 INFO L124 PetriNetUnfolderBase]: 468866/625046 cut-off events. [2023-08-04 05:47:12,666 INFO L125 PetriNetUnfolderBase]: For 9552/9552 co-relation queries the response was YES. [2023-08-04 05:47:14,594 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224696 conditions, 625046 events. 468866/625046 cut-off events. For 9552/9552 co-relation queries the response was YES. Maximal size of possible extension queue 17332. Compared 4739019 event pairs, 380024 based on Foata normal form. 13020/545214 useless extension candidates. Maximal degree in co-relation 263871. Up to 587323 conditions per place. [2023-08-04 05:47:17,071 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 44 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-04 05:47:17,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 242 flow [2023-08-04 05:47:17,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:47:17,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:47:17,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-04 05:47:17,074 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-08-04 05:47:17,074 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-04 05:47:17,074 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-04 05:47:17,074 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:47:17,075 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-04 05:47:17,076 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 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 05:47:17,081 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:47:17,082 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:47:17,082 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 142 flow. Second operand 3 states and 435 transitions. [2023-08-04 05:47:17,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 242 flow [2023-08-04 05:47:17,095 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 238 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-04 05:47:17,096 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 148 flow [2023-08-04 05:47:17,097 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2023-08-04 05:47:17,098 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-04 05:47:17,098 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 148 flow [2023-08-04 05:47:17,098 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 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 05:47:17,098 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:47:17,098 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:47:17,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-04 05:47:17,099 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:47:17,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:47:17,099 INFO L85 PathProgramCache]: Analyzing trace with hash -196942664, now seen corresponding path program 1 times [2023-08-04 05:47:17,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:47:17,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1994961457] [2023-08-04 05:47:17,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:17,100 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:47:17,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:17,165 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 05:47:17,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:47:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1994961457] [2023-08-04 05:47:17,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1994961457] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 05:47:17,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1873539503] [2023-08-04 05:47:17,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:47:17,166 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:47:17,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 05:47:17,170 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 05:47:17,171 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 05:47:17,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:47:17,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-04 05:47:17,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 05:47:17,272 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 05:47:17,272 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 05:47:17,287 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 05:47:17,287 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1873539503] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 05:47:17,287 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 05:47:17,287 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-04 05:47:17,287 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1083869661] [2023-08-04 05:47:17,287 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 05:47:17,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 05:47:17,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:47:17,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 05:47:17,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-04 05:47:17,301 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 275 [2023-08-04 05:47:17,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 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 05:47:17,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:47:17,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 275 [2023-08-04 05:47:17,303 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:04,467 INFO L124 PetriNetUnfolderBase]: 389314/514526 cut-off events. [2023-08-04 05:48:04,468 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-04 05:48:06,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007215 conditions, 514526 events. 389314/514526 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 14860. Compared 3757497 event pairs, 247180 based on Foata normal form. 4/440370 useless extension candidates. Maximal degree in co-relation 263641. Up to 484009 conditions per place. [2023-08-04 05:48:09,756 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 49 selfloop transitions, 3 changer transitions 1/66 dead transitions. [2023-08-04 05:48:09,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 276 flow [2023-08-04 05:48:09,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 05:48:09,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 05:48:09,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-08-04 05:48:09,759 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145454545454545 [2023-08-04 05:48:09,759 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-08-04 05:48:09,759 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-08-04 05:48:09,760 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:09,760 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-08-04 05:48:09,761 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 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 05:48:09,763 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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 05:48:09,764 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 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 05:48:09,764 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 148 flow. Second operand 4 states and 566 transitions. [2023-08-04 05:48:09,764 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 276 flow [2023-08-04 05:48:09,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:48:09,767 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 160 flow [2023-08-04 05:48:09,767 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-08-04 05:48:09,771 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-04 05:48:09,771 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 160 flow [2023-08-04 05:48:09,771 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 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 05:48:09,771 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:09,772 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:09,780 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 05:48:09,977 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 05:48:09,978 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:48:09,978 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:09,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1535662041, now seen corresponding path program 1 times [2023-08-04 05:48:09,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:09,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1365524571] [2023-08-04 05:48:09,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:09,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:09,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:10,160 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 05:48:10,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:10,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1365524571] [2023-08-04 05:48:10,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1365524571] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:10,161 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:48:10,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-04 05:48:10,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [284315222] [2023-08-04 05:48:10,161 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:10,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:10,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:10,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:10,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:48:10,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-08-04 05:48:10,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 05:48:10,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:10,166 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-08-04 05:48:10,166 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:48:45,234 INFO L124 PetriNetUnfolderBase]: 335018/439559 cut-off events. [2023-08-04 05:48:45,234 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2023-08-04 05:48:46,892 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863672 conditions, 439559 events. 335018/439559 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 13216. Compared 3164654 event pairs, 55274 based on Foata normal form. 0/390375 useless extension candidates. Maximal degree in co-relation 411157. Up to 383649 conditions per place. [2023-08-04 05:48:48,496 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 67 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-04 05:48:48,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 369 flow [2023-08-04 05:48:48,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:48:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:48:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-04 05:48:48,497 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566060606060606 [2023-08-04 05:48:48,498 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-04 05:48:48,498 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-04 05:48:48,498 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:48:48,498 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-04 05:48:48,499 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 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 05:48:48,501 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:48:48,501 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:48:48,502 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 160 flow. Second operand 3 states and 467 transitions. [2023-08-04 05:48:48,502 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 369 flow [2023-08-04 05:48:48,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 362 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-04 05:48:48,508 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 174 flow [2023-08-04 05:48:48,509 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2023-08-04 05:48:48,509 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-04 05:48:48,510 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 174 flow [2023-08-04 05:48:48,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 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 05:48:48,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:48:48,510 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:48:48,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-04 05:48:48,511 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:48:48,511 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:48:48,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1707300855, now seen corresponding path program 1 times [2023-08-04 05:48:48,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:48:48,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [350079850] [2023-08-04 05:48:48,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:48:48,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:48:48,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 05:48:48,587 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 05:48:48,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 05:48:48,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [350079850] [2023-08-04 05:48:48,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [350079850] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 05:48:48,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 05:48:48,588 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 05:48:48,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1765599633] [2023-08-04 05:48:48,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 05:48:48,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 05:48:48,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 05:48:48,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 05:48:48,590 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 05:48:48,597 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-04 05:48:48,598 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:48:48,598 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 05:48:48,598 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-04 05:48:48,598 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 05:49:29,415 INFO L124 PetriNetUnfolderBase]: 326858/437175 cut-off events. [2023-08-04 05:49:29,416 INFO L125 PetriNetUnfolderBase]: For 32441/32441 co-relation queries the response was YES. [2023-08-04 05:49:31,189 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906024 conditions, 437175 events. 326858/437175 cut-off events. For 32441/32441 co-relation queries the response was YES. Maximal size of possible extension queue 13239. Compared 3253372 event pairs, 274810 based on Foata normal form. 0/386567 useless extension candidates. Maximal degree in co-relation 433085. Up to 406153 conditions per place. [2023-08-04 05:49:32,812 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 53 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-04 05:49:32,812 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 309 flow [2023-08-04 05:49:32,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 05:49:32,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 05:49:32,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-04 05:49:32,814 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-04 05:49:32,814 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-04 05:49:32,814 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-04 05:49:32,814 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 05:49:32,814 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-04 05:49:32,815 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 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 05:49:32,816 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:49:32,817 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 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 05:49:32,817 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 174 flow. Second operand 3 states and 440 transitions. [2023-08-04 05:49:32,817 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 309 flow [2023-08-04 05:49:32,822 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 05:49:32,823 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 183 flow [2023-08-04 05:49:32,823 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-08-04 05:49:32,824 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-04 05:49:32,824 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 183 flow [2023-08-04 05:49:32,824 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 05:49:32,825 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 05:49:32,825 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 05:49:32,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 05:49:32,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-04 05:49:32,825 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 05:49:32,825 INFO L85 PathProgramCache]: Analyzing trace with hash -1493498360, now seen corresponding path program 1 times [2023-08-04 05:49:32,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 05:49:32,826 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [170730357] [2023-08-04 05:49:32,826 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 05:49:32,826 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 05:49:32,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:32,849 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 05:49:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 05:49:32,881 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 05:49:32,881 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 05:49:32,882 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-04 05:49:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-04 05:49:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-04 05:49:32,882 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-04 05:49:32,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-04 05:49:32,883 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-04 05:49:32,884 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 05:49:32,885 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-04 05:49:32,886 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-04 05:49:32,984 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.08 05:49:32 BasicIcfg [2023-08-04 05:49:32,984 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-04 05:49:32,985 INFO L158 Benchmark]: Toolchain (without parser) took 209563.84ms. Allocated memory was 360.7MB in the beginning and 16.0GB in the end (delta: 15.6GB). Free memory was 300.7MB in the beginning and 12.2GB in the end (delta: -11.9GB). Peak memory consumption was 3.8GB. Max. memory is 16.0GB. [2023-08-04 05:49:32,985 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory was 311.1MB in the beginning and 311.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 05:49:32,986 INFO L158 Benchmark]: CACSL2BoogieTranslator took 532.21ms. Allocated memory is still 360.7MB. Free memory was 300.4MB in the beginning and 276.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-04 05:49:32,986 INFO L158 Benchmark]: Boogie Procedure Inliner took 86.89ms. Allocated memory was 360.7MB in the beginning and 520.1MB in the end (delta: 159.4MB). Free memory was 276.7MB in the beginning and 486.5MB in the end (delta: -209.8MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. [2023-08-04 05:49:32,986 INFO L158 Benchmark]: Boogie Preprocessor took 41.65ms. Allocated memory is still 520.1MB. Free memory was 486.5MB in the beginning and 484.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. [2023-08-04 05:49:32,986 INFO L158 Benchmark]: RCFGBuilder took 692.05ms. Allocated memory is still 520.1MB. Free memory was 484.4MB in the beginning and 444.9MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. [2023-08-04 05:49:32,987 INFO L158 Benchmark]: TraceAbstraction took 208202.59ms. Allocated memory was 520.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 444.6MB in the beginning and 12.2GB in the end (delta: -11.7GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. [2023-08-04 05:49:32,988 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 360.7MB. Free memory was 311.1MB in the beginning and 311.0MB in the end (delta: 139.9kB). There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 532.21ms. Allocated memory is still 360.7MB. Free memory was 300.4MB in the beginning and 276.7MB in the end (delta: 23.6MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 86.89ms. Allocated memory was 360.7MB in the beginning and 520.1MB in the end (delta: 159.4MB). Free memory was 276.7MB in the beginning and 486.5MB in the end (delta: -209.8MB). Peak memory consumption was 9.2MB. Max. memory is 16.0GB. * Boogie Preprocessor took 41.65ms. Allocated memory is still 520.1MB. Free memory was 486.5MB in the beginning and 484.4MB in the end (delta: 2.1MB). There was no memory consumed. Max. memory is 16.0GB. * RCFGBuilder took 692.05ms. Allocated memory is still 520.1MB. Free memory was 484.4MB in the beginning and 444.9MB in the end (delta: 39.5MB). Peak memory consumption was 39.8MB. Max. memory is 16.0GB. * TraceAbstraction took 208202.59ms. Allocated memory was 520.1MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 444.6MB in the beginning and 12.2GB in the end (delta: -11.7GB). Peak memory consumption was 3.7GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 132 PlacesBefore, 41 PlacesAfterwards, 130 TransitionsBefore, 35 TransitionsAfterwards, 2792 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 55 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 14 ConcurrentYvCompositions, 4 ChoiceCompositions, 110 TotalNumberOfCompositions, 7860 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3614, independent: 3412, independent conditional: 0, independent unconditional: 3412, dependent: 202, dependent conditional: 0, dependent unconditional: 202, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1471, independent: 1448, independent conditional: 0, independent unconditional: 1448, dependent: 23, dependent conditional: 0, dependent unconditional: 23, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3614, independent: 1964, independent conditional: 0, independent unconditional: 1964, dependent: 179, dependent conditional: 0, dependent unconditional: 179, unknown: 1471, unknown conditional: 0, unknown unconditional: 1471] , Statistics on independence cache: Total cache size (in pairs): 178, Positive cache size: 164, Positive conditional cache size: 0, Positive unconditional cache size: 164, Negative cache size: 14, Negative conditional cache size: 0, Negative unconditional cache size: 14, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.7s, 107 PlacesBefore, 34 PlacesAfterwards, 102 TransitionsBefore, 27 TransitionsAfterwards, 1472 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3965 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1774, independent: 1633, independent conditional: 0, independent unconditional: 1633, dependent: 141, dependent conditional: 0, dependent unconditional: 141, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 724, independent: 710, independent conditional: 0, independent unconditional: 710, dependent: 14, dependent conditional: 0, dependent unconditional: 14, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1774, independent: 923, independent conditional: 0, independent unconditional: 923, dependent: 127, dependent conditional: 0, dependent unconditional: 127, unknown: 724, unknown conditional: 0, unknown unconditional: 724] , Statistics on independence cache: Total cache size (in pairs): 82, Positive cache size: 74, Positive conditional cache size: 0, Positive unconditional cache size: 74, Negative cache size: 8, Negative conditional cache size: 0, Negative unconditional cache size: 8, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.4s, 164 PlacesBefore, 67 PlacesAfterwards, 156 TransitionsBefore, 55 TransitionsAfterwards, 6776 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 118 TotalNumberOfCompositions, 20944 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6682, independent: 6366, independent conditional: 0, independent unconditional: 6366, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3184, independent: 3130, independent conditional: 0, independent unconditional: 3130, dependent: 54, dependent conditional: 0, dependent unconditional: 54, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6682, independent: 3236, independent conditional: 0, independent unconditional: 3236, dependent: 262, dependent conditional: 0, dependent unconditional: 262, unknown: 3184, unknown conditional: 0, unknown unconditional: 3184] , Statistics on independence cache: Total cache size (in pairs): 328, Positive cache size: 301, Positive conditional cache size: 0, Positive unconditional cache size: 301, Negative cache size: 27, Negative conditional cache size: 0, Negative unconditional cache size: 27, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff0_thd3; [L726] 0 _Bool x$r_buff1_thd0; [L727] 0 _Bool x$r_buff1_thd1; [L728] 0 _Bool x$r_buff1_thd2; [L729] 0 _Bool x$r_buff1_thd3; [L730] 0 _Bool x$read_delayed; [L731] 0 int *x$read_delayed_var; [L732] 0 int x$w_buff0; [L733] 0 _Bool x$w_buff0_used; [L734] 0 int x$w_buff1; [L735] 0 _Bool x$w_buff1_used; [L737] 0 int y = 0; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L825] 0 pthread_t t515[2]; [L826] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0))=-3, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0))=-2, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND FALSE 0 !(asdf<2) [L827] 0 pthread_t t516[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0))=-1, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L765] 3 x$w_buff1 = x$w_buff0 [L766] 3 x$w_buff0 = 2 [L767] 3 x$w_buff1_used = x$w_buff0_used [L768] 3 x$w_buff0_used = (_Bool)1 [L769] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L769] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L770] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L771] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L772] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L773] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L774] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0))=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L765] 4 x$w_buff1 = x$w_buff0 [L766] 4 x$w_buff0 = 2 [L767] 4 x$w_buff1_used = x$w_buff0_used [L768] 4 x$w_buff0_used = (_Bool)1 [L769] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND TRUE 4 !expression [L18] 4 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=2, x$w_buff1_used=1, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 153 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 5.4s, OverallIterations: 2, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.9s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 42 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 23 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 108 IncrementalHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 0 mSDtfsCounter, 108 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=89occurred in iteration=1, InterpolantAutomatonStates: 7, 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, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 51 SizeOfPredicates, 0 NumberOfNonLiveVariables, 155 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 4 InterpolantComputations, 1 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 10 procedures, 179 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 199.7s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 195.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 4 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=4, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 153 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 2.9s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 2.8s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred 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, 6 NumberOfCodeBlocks, 6 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 05:49:33,016 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...