/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 INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:48:57,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:48:57,860 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:48:57,864 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:48:57,864 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:48:57,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:48:57,865 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:48:57,885 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:48:57,886 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:48:57,886 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:48:57,886 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:48:57,887 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:48:57,887 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:48:57,888 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:48:57,888 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:48:57,888 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:48:57,888 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:48:57,889 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:48:57,889 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:48:57,889 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:48:57,890 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:48:57,890 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:48:57,890 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:48:57,891 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:48:57,891 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:48:57,891 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:48:57,892 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:48:57,892 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:48:57,892 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:48:57,893 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:48:57,893 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:48:57,893 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:48:57,893 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:48:57,894 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:48:57,894 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:48:57,894 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:48:57,894 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:48:57,895 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:48:57,895 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:48:57,895 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:48:57,895 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:48:57,896 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:48:58,064 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:48:58,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:48:58,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:48:58,085 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:48:58,087 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:48:58,088 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-03 23:48:59,249 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:48:59,476 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:48:59,476 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-03 23:48:59,488 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fad5354/a51ca0db93624348b2695646051cbf16/FLAG6adb33b8b [2023-08-03 23:48:59,500 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/11fad5354/a51ca0db93624348b2695646051cbf16 [2023-08-03 23:48:59,503 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:48:59,504 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:48:59,505 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:48:59,505 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:48:59,511 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:48:59,512 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:48:59" (1/1) ... [2023-08-03 23:48:59,513 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15673ae3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:48:59, skipping insertion in model container [2023-08-03 23:48:59,513 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:48:59" (1/1) ... [2023-08-03 23:48:59,560 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:48:59,689 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_mix052_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-03 23:48:59,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:48:59,898 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:48:59,912 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_mix052_pso.opt_rmo.opt_tso.opt_bound2.i[964,977] [2023-08-03 23:48:59,927 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:48:59,929 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:48:59,975 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:49:00,009 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:49:00,010 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:49:00,016 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:49:00,018 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00 WrapperNode [2023-08-03 23:49:00,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:49:00,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:49:00,020 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:49:00,020 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:49:00,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,049 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,070 INFO L138 Inliner]: procedures = 176, calls = 54, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 152 [2023-08-03 23:49:00,072 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:49:00,073 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:49:00,073 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:49:00,073 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:49:00,081 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,081 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,093 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,109 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,112 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,114 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,115 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,119 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:49:00,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:49:00,120 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:49:00,120 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:49:00,121 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (1/1) ... [2023-08-03 23:49:00,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:49:00,142 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:00,156 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) [2023-08-03 23:49:00,162 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 [2023-08-03 23:49:00,185 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:49:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:49:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:49:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:49:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:49:00,186 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:49:00,186 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:49:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:49:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:49:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:49:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:49:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:49:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:49:00,187 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:49:00,187 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:49:00,189 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-03 23:49:00,307 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:49:00,308 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:49:00,563 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:49:00,690 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:49:00,690 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 23:49:00,693 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:49:00 BoogieIcfgContainer [2023-08-03 23:49:00,693 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:49:00,695 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:49:00,695 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:49:00,698 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:49:00,698 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:48:59" (1/3) ... [2023-08-03 23:49:00,698 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7279ca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:49:00, skipping insertion in model container [2023-08-03 23:49:00,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:49:00" (2/3) ... [2023-08-03 23:49:00,699 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7279ca94 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:49:00, skipping insertion in model container [2023-08-03 23:49:00,699 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:49:00" (3/3) ... [2023-08-03 23:49:00,700 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix052_pso.opt_rmo.opt_tso.opt_bound2.i [2023-08-03 23:49:00,707 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:49:00,715 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:49:00,716 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:49:00,716 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:49:00,771 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:49:00,805 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 129 places, 127 transitions, 269 flow [2023-08-03 23:49:00,968 INFO L124 PetriNetUnfolderBase]: 30/448 cut-off events. [2023-08-03 23:49:00,968 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:49:00,975 INFO L83 FinitePrefix]: Finished finitePrefix Result has 473 conditions, 448 events. 30/448 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1965 event pairs, 0 based on Foata normal form. 0/392 useless extension candidates. Maximal degree in co-relation 265. Up to 16 conditions per place. [2023-08-03 23:49:00,976 INFO L82 GeneralOperation]: Start removeDead. Operand has 129 places, 127 transitions, 269 flow [2023-08-03 23:49:00,980 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 103 places, 98 transitions, 211 flow [2023-08-03 23:49:00,984 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:49:01,001 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-03 23:49:01,003 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 103 places, 98 transitions, 211 flow [2023-08-03 23:49:01,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 103 places, 98 transitions, 211 flow [2023-08-03 23:49:01,035 INFO L124 PetriNetUnfolderBase]: 6/216 cut-off events. [2023-08-03 23:49:01,035 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:49:01,036 INFO L83 FinitePrefix]: Finished finitePrefix Result has 241 conditions, 216 events. 6/216 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 629 event pairs, 0 based on Foata normal form. 0/200 useless extension candidates. Maximal degree in co-relation 149. Up to 8 conditions per place. [2023-08-03 23:49:01,038 INFO L119 LiptonReduction]: Number of co-enabled transitions 1204 [2023-08-03 23:49:04,045 INFO L134 LiptonReduction]: Checked pairs total: 2864 [2023-08-03 23:49:04,045 INFO L136 LiptonReduction]: Total number of compositions: 79 [2023-08-03 23:49:04,056 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:49:04,062 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;@724b553b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:49:04,062 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:49:04,066 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:49:04,066 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:49:04,066 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:49:04,066 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:04,067 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:49:04,067 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:04,071 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:04,071 INFO L85 PathProgramCache]: Analyzing trace with hash -2141799785, now seen corresponding path program 1 times [2023-08-03 23:49:04,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:04,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039591722] [2023-08-03 23:49:04,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:04,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:04,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:49:04,191 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:49:04,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:49:04,251 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:49:04,253 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:49:04,254 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:49:04,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:49:04,256 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:49:04,257 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:49:04,257 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:49:04,266 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:49:04,267 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:49:04,267 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:49:04,294 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:49:04,301 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 23:49:04,478 INFO L124 PetriNetUnfolderBase]: 93/1385 cut-off events. [2023-08-03 23:49:04,478 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:49:04,489 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1385 events. 93/1385 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9544 event pairs, 0 based on Foata normal form. 0/1208 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 23:49:04,490 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 23:49:04,493 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 132 places, 121 transitions, 278 flow [2023-08-03 23:49:04,493 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:49:04,493 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 132 places, 121 transitions, 278 flow [2023-08-03 23:49:04,494 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 132 places, 121 transitions, 278 flow [2023-08-03 23:49:04,494 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 132 places, 121 transitions, 278 flow [2023-08-03 23:49:04,571 INFO L124 PetriNetUnfolderBase]: 12/602 cut-off events. [2023-08-03 23:49:04,571 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:49:04,573 INFO L83 FinitePrefix]: Finished finitePrefix Result has 700 conditions, 602 events. 12/602 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 3060 event pairs, 0 based on Foata normal form. 0/560 useless extension candidates. Maximal degree in co-relation 477. Up to 27 conditions per place. [2023-08-03 23:49:04,583 INFO L119 LiptonReduction]: Number of co-enabled transitions 3320 [2023-08-03 23:49:07,395 INFO L134 LiptonReduction]: Checked pairs total: 9145 [2023-08-03 23:49:07,395 INFO L136 LiptonReduction]: Total number of compositions: 86 [2023-08-03 23:49:07,398 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:49:07,399 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;@724b553b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:49:07,399 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:49:07,406 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:49:07,406 INFO L124 PetriNetUnfolderBase]: 0/67 cut-off events. [2023-08-03 23:49:07,406 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 23:49:07,406 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:07,406 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:07,407 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:07,407 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:07,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1615708869, now seen corresponding path program 1 times [2023-08-03 23:49:07,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:07,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [123817709] [2023-08-03 23:49:07,407 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:07,408 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:07,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:07,596 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:49:07,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:07,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [123817709] [2023-08-03 23:49:07,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [123817709] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:07,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:49:07,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:49:07,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089508836] [2023-08-03 23:49:07,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:07,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:49:07,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:07,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:49:07,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:49:07,650 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 236 [2023-08-03 23:49:07,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 42 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:07,654 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:07,654 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 236 [2023-08-03 23:49:07,654 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:15,113 INFO L124 PetriNetUnfolderBase]: 55520/73782 cut-off events. [2023-08-03 23:49:15,114 INFO L125 PetriNetUnfolderBase]: For 4476/4476 co-relation queries the response was YES. [2023-08-03 23:49:15,334 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150893 conditions, 73782 events. 55520/73782 cut-off events. For 4476/4476 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 458335 event pairs, 44754 based on Foata normal form. 0/67293 useless extension candidates. Maximal degree in co-relation 43114. Up to 71670 conditions per place. [2023-08-03 23:49:15,727 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 34 selfloop transitions, 2 changer transitions 0/46 dead transitions. [2023-08-03 23:49:15,727 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 46 transitions, 200 flow [2023-08-03 23:49:15,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:49:15,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:49:15,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 412 transitions. [2023-08-03 23:49:15,744 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5819209039548022 [2023-08-03 23:49:15,744 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 412 transitions. [2023-08-03 23:49:15,745 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 412 transitions. [2023-08-03 23:49:15,748 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:15,750 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 412 transitions. [2023-08-03 23:49:15,754 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 137.33333333333334) internal successors, (412), 3 states have internal predecessors, (412), 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) [2023-08-03 23:49:15,762 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-03 23:49:15,762 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-03 23:49:15,764 INFO L175 Difference]: Start difference. First operand has 55 places, 42 transitions, 120 flow. Second operand 3 states and 412 transitions. [2023-08-03 23:49:15,765 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 46 transitions, 200 flow [2023-08-03 23:49:15,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 57 places, 46 transitions, 194 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:49:15,777 INFO L231 Difference]: Finished difference. Result has 58 places, 43 transitions, 126 flow [2023-08-03 23:49:15,779 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=114, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=126, PETRI_PLACES=58, PETRI_TRANSITIONS=43} [2023-08-03 23:49:15,782 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 3 predicate places. [2023-08-03 23:49:15,784 INFO L495 AbstractCegarLoop]: Abstraction has has 58 places, 43 transitions, 126 flow [2023-08-03 23:49:15,786 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:15,786 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:15,790 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:49:15,790 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 23:49:15,790 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:15,790 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:15,791 INFO L85 PathProgramCache]: Analyzing trace with hash -993610993, now seen corresponding path program 1 times [2023-08-03 23:49:15,791 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:15,791 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2116629846] [2023-08-03 23:49:15,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:15,792 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:15,872 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:49:15,873 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2116629846] [2023-08-03 23:49:15,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2116629846] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:15,873 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1376435919] [2023-08-03 23:49:15,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:15,873 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:15,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:15,877 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) [2023-08-03 23:49:15,882 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-03 23:49:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:15,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:49:15,977 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:16,032 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:49:16,032 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:49:16,032 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1376435919] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:16,033 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:49:16,033 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:49:16,033 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1161552157] [2023-08-03 23:49:16,033 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:16,033 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:49:16,034 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:16,034 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:49:16,034 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:49:16,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-03 23:49:16,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 43 transitions, 126 flow. Second operand has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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) [2023-08-03 23:49:16,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:16,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-03 23:49:16,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:21,989 INFO L124 PetriNetUnfolderBase]: 55508/73737 cut-off events. [2023-08-03 23:49:21,989 INFO L125 PetriNetUnfolderBase]: For 3951/3951 co-relation queries the response was YES. [2023-08-03 23:49:22,194 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150371 conditions, 73737 events. 55508/73737 cut-off events. For 3951/3951 co-relation queries the response was YES. Maximal size of possible extension queue 2449. Compared 457901 event pairs, 36684 based on Foata normal form. 9/67314 useless extension candidates. Maximal degree in co-relation 53699. Up to 71623 conditions per place. [2023-08-03 23:49:22,457 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 37 selfloop transitions, 4 changer transitions 0/50 dead transitions. [2023-08-03 23:49:22,457 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 61 places, 50 transitions, 222 flow [2023-08-03 23:49:22,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:49:22,458 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:49:22,461 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 662 transitions. [2023-08-03 23:49:22,462 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5610169491525424 [2023-08-03 23:49:22,462 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 662 transitions. [2023-08-03 23:49:22,462 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 662 transitions. [2023-08-03 23:49:22,463 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:22,463 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 662 transitions. [2023-08-03 23:49:22,464 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 132.4) internal successors, (662), 5 states have internal predecessors, (662), 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) [2023-08-03 23:49:22,468 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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) [2023-08-03 23:49:22,468 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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) [2023-08-03 23:49:22,469 INFO L175 Difference]: Start difference. First operand has 58 places, 43 transitions, 126 flow. Second operand 5 states and 662 transitions. [2023-08-03 23:49:22,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 61 places, 50 transitions, 222 flow [2023-08-03 23:49:22,471 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 50 transitions, 219 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 23:49:22,473 INFO L231 Difference]: Finished difference. Result has 61 places, 43 transitions, 140 flow [2023-08-03 23:49:22,473 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=119, PETRI_DIFFERENCE_MINUEND_PLACES=55, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=140, PETRI_PLACES=61, PETRI_TRANSITIONS=43} [2023-08-03 23:49:22,474 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 6 predicate places. [2023-08-03 23:49:22,474 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 43 transitions, 140 flow [2023-08-03 23:49:22,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 125.6) internal successors, (628), 5 states have internal predecessors, (628), 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) [2023-08-03 23:49:22,475 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:22,477 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:22,482 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 23:49:22,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:22,682 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:22,683 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:22,683 INFO L85 PathProgramCache]: Analyzing trace with hash 1772835459, now seen corresponding path program 1 times [2023-08-03 23:49:22,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:22,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2133533560] [2023-08-03 23:49:22,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:22,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:22,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:22,767 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-03 23:49:22,767 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:22,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2133533560] [2023-08-03 23:49:22,768 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2133533560] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:22,768 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [955537226] [2023-08-03 23:49:22,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:22,768 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:22,768 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:22,774 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) [2023-08-03 23:49:22,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-03 23:49:22,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:22,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:49:22,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:22,879 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:49:22,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:49:22,880 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [955537226] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:22,880 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:49:22,880 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:49:22,880 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158889532] [2023-08-03 23:49:22,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:22,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:49:22,881 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:22,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:49:22,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:49:22,895 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 236 [2023-08-03 23:49:22,895 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 43 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:22,896 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:22,896 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 236 [2023-08-03 23:49:22,896 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:28,530 INFO L124 PetriNetUnfolderBase]: 53886/73644 cut-off events. [2023-08-03 23:49:28,530 INFO L125 PetriNetUnfolderBase]: For 3706/3706 co-relation queries the response was YES. [2023-08-03 23:49:28,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 148287 conditions, 73644 events. 53886/73644 cut-off events. For 3706/3706 co-relation queries the response was YES. Maximal size of possible extension queue 2640. Compared 484969 event pairs, 42318 based on Foata normal form. 0/67500 useless extension candidates. Maximal degree in co-relation 42572. Up to 69144 conditions per place. [2023-08-03 23:49:29,004 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 40 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-03 23:49:29,005 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 52 transitions, 244 flow [2023-08-03 23:49:29,005 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:49:29,005 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:49:29,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 417 transitions. [2023-08-03 23:49:29,007 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5889830508474576 [2023-08-03 23:49:29,007 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 417 transitions. [2023-08-03 23:49:29,007 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 417 transitions. [2023-08-03 23:49:29,007 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:29,007 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 417 transitions. [2023-08-03 23:49:29,008 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.0) internal successors, (417), 3 states have internal predecessors, (417), 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) [2023-08-03 23:49:29,010 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-03 23:49:29,010 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 236.0) internal successors, (944), 4 states have internal predecessors, (944), 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) [2023-08-03 23:49:29,010 INFO L175 Difference]: Start difference. First operand has 61 places, 43 transitions, 140 flow. Second operand 3 states and 417 transitions. [2023-08-03 23:49:29,010 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 52 transitions, 244 flow [2023-08-03 23:49:29,012 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 61 places, 52 transitions, 237 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 23:49:29,013 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 148 flow [2023-08-03 23:49:29,013 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=133, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2023-08-03 23:49:29,018 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 7 predicate places. [2023-08-03 23:49:29,019 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 148 flow [2023-08-03 23:49:29,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:29,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:29,021 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:29,026 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 23:49:29,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-03 23:49:29,226 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:29,226 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:29,226 INFO L85 PathProgramCache]: Analyzing trace with hash 1842550858, now seen corresponding path program 1 times [2023-08-03 23:49:29,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:29,227 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015947675] [2023-08-03 23:49:29,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:29,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:29,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:29,287 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:49:29,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:29,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015947675] [2023-08-03 23:49:29,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015947675] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:29,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [265152603] [2023-08-03 23:49:29,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:29,289 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:29,289 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:29,290 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:49:29,293 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-03 23:49:29,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:29,380 INFO L262 TraceCheckSpWp]: Trace formula consists of 167 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:49:29,381 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:29,397 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:49:29,397 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:49:29,416 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-03 23:49:29,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [265152603] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:49:29,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:49:29,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:49:29,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97829240] [2023-08-03 23:49:29,416 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:49:29,417 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:49:29,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:29,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:49:29,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:49:29,431 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-03 23:49:29,432 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-03 23:49:29,432 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:29,432 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-03 23:49:29,432 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:33,795 INFO L124 PetriNetUnfolderBase]: 42343/57167 cut-off events. [2023-08-03 23:49:33,796 INFO L125 PetriNetUnfolderBase]: For 3150/3150 co-relation queries the response was YES. [2023-08-03 23:49:33,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115494 conditions, 57167 events. 42343/57167 cut-off events. For 3150/3150 co-relation queries the response was YES. Maximal size of possible extension queue 2237. Compared 357918 event pairs, 26937 based on Foata normal form. 3/52742 useless extension candidates. Maximal degree in co-relation 41043. Up to 53881 conditions per place. [2023-08-03 23:49:34,134 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 38 selfloop transitions, 3 changer transitions 0/50 dead transitions. [2023-08-03 23:49:34,135 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 50 transitions, 237 flow [2023-08-03 23:49:34,135 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:49:34,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:49:34,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 537 transitions. [2023-08-03 23:49:34,137 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5688559322033898 [2023-08-03 23:49:34,137 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 537 transitions. [2023-08-03 23:49:34,137 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 537 transitions. [2023-08-03 23:49:34,137 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:34,137 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 537 transitions. [2023-08-03 23:49:34,139 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 134.25) internal successors, (537), 4 states have internal predecessors, (537), 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) [2023-08-03 23:49:34,140 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:34,141 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:34,141 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 148 flow. Second operand 4 states and 537 transitions. [2023-08-03 23:49:34,141 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 50 transitions, 237 flow [2023-08-03 23:49:34,143 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 50 transitions, 235 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:49:34,144 INFO L231 Difference]: Finished difference. Result has 64 places, 43 transitions, 143 flow [2023-08-03 23:49:34,144 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=143, PETRI_PLACES=64, PETRI_TRANSITIONS=43} [2023-08-03 23:49:34,145 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-03 23:49:34,145 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 43 transitions, 143 flow [2023-08-03 23:49:34,145 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-03 23:49:34,145 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:34,146 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:34,154 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 23:49:34,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:34,350 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:34,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:34,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1098456783, now seen corresponding path program 1 times [2023-08-03 23:49:34,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:34,351 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224766021] [2023-08-03 23:49:34,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:34,351 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:34,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:34,418 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:49:34,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224766021] [2023-08-03 23:49:34,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224766021] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:34,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347878572] [2023-08-03 23:49:34,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:34,419 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:34,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:34,421 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:49:34,423 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-03 23:49:34,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:34,517 INFO L262 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:49:34,518 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:34,544 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:49:34,544 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:49:34,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347878572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:34,544 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:49:34,544 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 23:49:34,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638311528] [2023-08-03 23:49:34,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:34,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:49:34,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:34,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:49:34,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:49:34,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-03 23:49:34,560 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 43 transitions, 143 flow. Second operand has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-03 23:49:34,560 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:34,560 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-03 23:49:34,560 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:38,865 INFO L124 PetriNetUnfolderBase]: 41935/56836 cut-off events. [2023-08-03 23:49:38,865 INFO L125 PetriNetUnfolderBase]: For 2671/2671 co-relation queries the response was YES. [2023-08-03 23:49:39,019 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114552 conditions, 56836 events. 41935/56836 cut-off events. For 2671/2671 co-relation queries the response was YES. Maximal size of possible extension queue 2249. Compared 359533 event pairs, 11542 based on Foata normal form. 144/52660 useless extension candidates. Maximal degree in co-relation 40695. Up to 52515 conditions per place. [2023-08-03 23:49:39,172 INFO L140 encePairwiseOnDemand]: 232/236 looper letters, 53 selfloop transitions, 4 changer transitions 0/65 dead transitions. [2023-08-03 23:49:39,172 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 65 transitions, 301 flow [2023-08-03 23:49:39,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:49:39,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:49:39,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 677 transitions. [2023-08-03 23:49:39,174 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.573728813559322 [2023-08-03 23:49:39,174 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 677 transitions. [2023-08-03 23:49:39,174 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 677 transitions. [2023-08-03 23:49:39,174 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:39,174 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 677 transitions. [2023-08-03 23:49:39,175 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 135.4) internal successors, (677), 5 states have internal predecessors, (677), 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) [2023-08-03 23:49:39,178 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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) [2023-08-03 23:49:39,178 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 236.0) internal successors, (1416), 6 states have internal predecessors, (1416), 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) [2023-08-03 23:49:39,178 INFO L175 Difference]: Start difference. First operand has 64 places, 43 transitions, 143 flow. Second operand 5 states and 677 transitions. [2023-08-03 23:49:39,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 65 transitions, 301 flow [2023-08-03 23:49:39,180 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 65 transitions, 294 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:49:39,181 INFO L231 Difference]: Finished difference. Result has 65 places, 43 transitions, 153 flow [2023-08-03 23:49:39,181 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=153, PETRI_PLACES=65, PETRI_TRANSITIONS=43} [2023-08-03 23:49:39,182 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 10 predicate places. [2023-08-03 23:49:39,182 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 43 transitions, 153 flow [2023-08-03 23:49:39,182 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 126.6) internal successors, (633), 5 states have internal predecessors, (633), 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) [2023-08-03 23:49:39,182 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:39,183 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:39,191 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-03 23:49:39,387 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:39,387 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:39,388 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:39,388 INFO L85 PathProgramCache]: Analyzing trace with hash -468783995, now seen corresponding path program 1 times [2023-08-03 23:49:39,388 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:39,388 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1000875143] [2023-08-03 23:49:39,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:39,388 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:39,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:39,441 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:49:39,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1000875143] [2023-08-03 23:49:39,442 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1000875143] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:39,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [791891439] [2023-08-03 23:49:39,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:39,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:39,442 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:39,444 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:49:39,467 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-08-03 23:49:39,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:39,544 INFO L262 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:49:39,545 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:39,569 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:49:39,569 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:49:39,586 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-03 23:49:39,586 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [791891439] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:49:39,586 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:49:39,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:49:39,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [331685629] [2023-08-03 23:49:39,586 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:49:39,587 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:49:39,587 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:39,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:49:39,588 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:49:39,600 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 236 [2023-08-03 23:49:39,601 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 43 transitions, 153 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:39,601 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:39,601 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 236 [2023-08-03 23:49:39,601 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:43,293 INFO L124 PetriNetUnfolderBase]: 35056/47077 cut-off events. [2023-08-03 23:49:43,293 INFO L125 PetriNetUnfolderBase]: For 3061/3061 co-relation queries the response was YES. [2023-08-03 23:49:43,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 95436 conditions, 47077 events. 35056/47077 cut-off events. For 3061/3061 co-relation queries the response was YES. Maximal size of possible extension queue 2110. Compared 285875 event pairs, 21142 based on Foata normal form. 36/43657 useless extension candidates. Maximal degree in co-relation 33836. Up to 43492 conditions per place. [2023-08-03 23:49:43,572 INFO L140 encePairwiseOnDemand]: 233/236 looper letters, 49 selfloop transitions, 3 changer transitions 0/60 dead transitions. [2023-08-03 23:49:43,573 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 60 transitions, 287 flow [2023-08-03 23:49:43,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:49:43,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:49:43,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 548 transitions. [2023-08-03 23:49:43,575 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5805084745762712 [2023-08-03 23:49:43,575 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 548 transitions. [2023-08-03 23:49:43,575 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 548 transitions. [2023-08-03 23:49:43,576 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:43,576 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 548 transitions. [2023-08-03 23:49:43,577 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 137.0) internal successors, (548), 4 states have internal predecessors, (548), 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) [2023-08-03 23:49:43,579 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:43,579 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:43,579 INFO L175 Difference]: Start difference. First operand has 65 places, 43 transitions, 153 flow. Second operand 4 states and 548 transitions. [2023-08-03 23:49:43,579 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 60 transitions, 287 flow [2023-08-03 23:49:43,581 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 60 transitions, 282 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 23:49:43,582 INFO L231 Difference]: Finished difference. Result has 66 places, 42 transitions, 146 flow [2023-08-03 23:49:43,582 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=140, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=146, PETRI_PLACES=66, PETRI_TRANSITIONS=42} [2023-08-03 23:49:43,582 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 11 predicate places. [2023-08-03 23:49:43,582 INFO L495 AbstractCegarLoop]: Abstraction has has 66 places, 42 transitions, 146 flow [2023-08-03 23:49:43,583 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:43,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:43,583 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:43,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-08-03 23:49:43,787 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:43,788 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:49:43,788 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:43,788 INFO L85 PathProgramCache]: Analyzing trace with hash -1859044063, now seen corresponding path program 1 times [2023-08-03 23:49:43,788 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:43,788 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [195661700] [2023-08-03 23:49:43,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:43,789 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:43,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:43,890 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:49:43,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:43,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [195661700] [2023-08-03 23:49:43,891 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [195661700] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:49:43,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1725347072] [2023-08-03 23:49:43,891 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:43,891 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:43,891 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:49:43,892 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:49:43,893 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-08-03 23:49:43,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:43,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 235 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:49:43,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:49:44,008 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:49:44,008 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:49:44,008 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1725347072] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:44,008 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:49:44,009 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:49:44,009 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030548882] [2023-08-03 23:49:44,009 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:44,009 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 23:49:44,009 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:44,010 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 23:49:44,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:49:44,022 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 236 [2023-08-03 23:49:44,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 66 places, 42 transitions, 146 flow. Second operand has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 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) [2023-08-03 23:49:44,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:44,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 236 [2023-08-03 23:49:44,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:49:45,923 INFO L124 PetriNetUnfolderBase]: 19096/26509 cut-off events. [2023-08-03 23:49:45,924 INFO L125 PetriNetUnfolderBase]: For 2287/2287 co-relation queries the response was YES. [2023-08-03 23:49:46,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 54768 conditions, 26509 events. 19096/26509 cut-off events. For 2287/2287 co-relation queries the response was YES. Maximal size of possible extension queue 1169. Compared 158398 event pairs, 952 based on Foata normal form. 3600/28381 useless extension candidates. Maximal degree in co-relation 19480. Up to 20016 conditions per place. [2023-08-03 23:49:46,024 INFO L140 encePairwiseOnDemand]: 234/236 looper letters, 0 selfloop transitions, 0 changer transitions 65/65 dead transitions. [2023-08-03 23:49:46,024 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 65 transitions, 306 flow [2023-08-03 23:49:46,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:49:46,025 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:49:46,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 557 transitions. [2023-08-03 23:49:46,026 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.590042372881356 [2023-08-03 23:49:46,026 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 557 transitions. [2023-08-03 23:49:46,026 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 557 transitions. [2023-08-03 23:49:46,026 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:49:46,027 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 557 transitions. [2023-08-03 23:49:46,028 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.25) internal successors, (557), 4 states have internal predecessors, (557), 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) [2023-08-03 23:49:46,029 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:46,029 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 236.0) internal successors, (1180), 5 states have internal predecessors, (1180), 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) [2023-08-03 23:49:46,029 INFO L175 Difference]: Start difference. First operand has 66 places, 42 transitions, 146 flow. Second operand 4 states and 557 transitions. [2023-08-03 23:49:46,030 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 65 transitions, 306 flow [2023-08-03 23:49:46,163 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 65 transitions, 299 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:49:46,163 INFO L231 Difference]: Finished difference. Result has 64 places, 0 transitions, 0 flow [2023-08-03 23:49:46,164 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=236, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=41, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=64, PETRI_TRANSITIONS=0} [2023-08-03 23:49:46,164 INFO L281 CegarLoopForPetriNet]: 55 programPoint places, 9 predicate places. [2023-08-03 23:49:46,164 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 0 transitions, 0 flow [2023-08-03 23:49:46,165 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 128.75) internal successors, (515), 4 states have internal predecessors, (515), 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) [2023-08-03 23:49:46,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:49:46,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:49:46,165 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:49:46,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-08-03 23:49:46,369 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:49:46,370 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:49:46,370 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-03 23:49:46,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 23:49:46,470 INFO L124 PetriNetUnfolderBase]: 93/1385 cut-off events. [2023-08-03 23:49:46,470 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:49:46,476 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1385 events. 93/1385 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9544 event pairs, 0 based on Foata normal form. 0/1208 useless extension candidates. Maximal degree in co-relation 999. Up to 54 conditions per place. [2023-08-03 23:49:46,476 INFO L82 GeneralOperation]: Start removeDead. Operand has 158 places, 150 transitions, 336 flow [2023-08-03 23:49:46,479 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 156 places, 148 transitions, 324 flow [2023-08-03 23:49:46,479 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:49:46,479 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 156 places, 148 transitions, 324 flow [2023-08-03 23:49:46,479 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 156 places, 148 transitions, 324 flow [2023-08-03 23:49:46,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 156 places, 148 transitions, 324 flow [2023-08-03 23:49:46,573 INFO L124 PetriNetUnfolderBase]: 93/1381 cut-off events. [2023-08-03 23:49:46,573 INFO L125 PetriNetUnfolderBase]: For 22/22 co-relation queries the response was YES. [2023-08-03 23:49:46,578 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1471 conditions, 1381 events. 93/1381 cut-off events. For 22/22 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9481 event pairs, 0 based on Foata normal form. 0/1204 useless extension candidates. Maximal degree in co-relation 990. Up to 54 conditions per place. [2023-08-03 23:49:46,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 5568 [2023-08-03 23:49:49,667 INFO L134 LiptonReduction]: Checked pairs total: 13834 [2023-08-03 23:49:49,667 INFO L136 LiptonReduction]: Total number of compositions: 119 [2023-08-03 23:49:49,668 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 23:49:49,669 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;@724b553b, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:49:49,669 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:49:49,672 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:49:49,672 INFO L124 PetriNetUnfolderBase]: 1/23 cut-off events. [2023-08-03 23:49:49,672 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:49:49,672 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:49:49,673 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 23:49:49,673 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:49:49,673 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:49:49,673 INFO L85 PathProgramCache]: Analyzing trace with hash 443955137, now seen corresponding path program 1 times [2023-08-03 23:49:49,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:49:49,673 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [692293899] [2023-08-03 23:49:49,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:49:49,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:49:49,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:49:49,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:49:49,714 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:49:49,714 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [692293899] [2023-08-03 23:49:49,714 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [692293899] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:49:49,714 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:49:49,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:49:49,715 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [154728833] [2023-08-03 23:49:49,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:49:49,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:49:49,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:49:49,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:49:49,716 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:49:49,724 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 269 [2023-08-03 23:49:49,725 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 46 transitions, 120 flow. Second operand has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:49:49,725 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:49:49,725 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 269 [2023-08-03 23:49:49,725 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:50:09,177 INFO L124 PetriNetUnfolderBase]: 206750/269031 cut-off events. [2023-08-03 23:50:09,177 INFO L125 PetriNetUnfolderBase]: For 4377/4377 co-relation queries the response was YES. [2023-08-03 23:50:09,885 INFO L83 FinitePrefix]: Finished finitePrefix Result has 536330 conditions, 269031 events. 206750/269031 cut-off events. For 4377/4377 co-relation queries the response was YES. Maximal size of possible extension queue 7283. Compared 1747647 event pairs, 169944 based on Foata normal form. 0/231953 useless extension candidates. Maximal degree in co-relation 154233. Up to 261960 conditions per place. [2023-08-03 23:50:10,895 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 39 selfloop transitions, 2 changer transitions 0/49 dead transitions. [2023-08-03 23:50:10,895 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 49 transitions, 208 flow [2023-08-03 23:50:10,896 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:50:10,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:50:10,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 418 transitions. [2023-08-03 23:50:10,897 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5179677819083024 [2023-08-03 23:50:10,897 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 418 transitions. [2023-08-03 23:50:10,897 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 418 transitions. [2023-08-03 23:50:10,897 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:50:10,897 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 418 transitions. [2023-08-03 23:50:10,898 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 139.33333333333334) internal successors, (418), 3 states have internal predecessors, (418), 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) [2023-08-03 23:50:10,899 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:10,900 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:10,900 INFO L175 Difference]: Start difference. First operand has 58 places, 46 transitions, 120 flow. Second operand 3 states and 418 transitions. [2023-08-03 23:50:10,900 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 49 transitions, 208 flow [2023-08-03 23:50:10,903 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 49 transitions, 206 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 23:50:10,904 INFO L231 Difference]: Finished difference. Result has 61 places, 46 transitions, 128 flow [2023-08-03 23:50:10,904 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=61, PETRI_TRANSITIONS=46} [2023-08-03 23:50:10,905 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 3 predicate places. [2023-08-03 23:50:10,905 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 46 transitions, 128 flow [2023-08-03 23:50:10,905 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 127.0) internal successors, (381), 3 states have internal predecessors, (381), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:50:10,905 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:50:10,905 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:50:10,906 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 23:50:10,906 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:50:10,906 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:50:10,906 INFO L85 PathProgramCache]: Analyzing trace with hash 1560834059, now seen corresponding path program 1 times [2023-08-03 23:50:10,906 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:50:10,906 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [497570291] [2023-08-03 23:50:10,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:10,906 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:50:10,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:10,946 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 23:50:10,947 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:50:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [497570291] [2023-08-03 23:50:10,947 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [497570291] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:50:10,947 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [296960210] [2023-08-03 23:50:10,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:10,947 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:50:10,947 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:50:10,950 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:50:10,954 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 23:50:11,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:11,026 INFO L262 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:50:11,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:50:11,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 23:50:11,037 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:50:11,037 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [296960210] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:50:11,038 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:50:11,038 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:50:11,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932629558] [2023-08-03 23:50:11,040 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:50:11,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:50:11,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:50:11,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:50:11,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:50:11,052 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 269 [2023-08-03 23:50:11,052 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 46 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:50:11,053 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:50:11,053 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 269 [2023-08-03 23:50:11,053 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:50:30,785 INFO L124 PetriNetUnfolderBase]: 200318/264452 cut-off events. [2023-08-03 23:50:30,786 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-03 23:50:31,570 INFO L83 FinitePrefix]: Finished finitePrefix Result has 522649 conditions, 264452 events. 200318/264452 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 7641. Compared 1783579 event pairs, 160850 based on Foata normal form. 0/230467 useless extension candidates. Maximal degree in co-relation 522612. Up to 252785 conditions per place. [2023-08-03 23:50:32,356 INFO L140 encePairwiseOnDemand]: 266/269 looper letters, 45 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2023-08-03 23:50:32,356 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 55 transitions, 240 flow [2023-08-03 23:50:32,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:50:32,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:50:32,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 422 transitions. [2023-08-03 23:50:32,358 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5229244114002478 [2023-08-03 23:50:32,358 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 422 transitions. [2023-08-03 23:50:32,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 422 transitions. [2023-08-03 23:50:32,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:50:32,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 422 transitions. [2023-08-03 23:50:32,359 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 140.66666666666666) internal successors, (422), 3 states have internal predecessors, (422), 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) [2023-08-03 23:50:32,359 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:32,360 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:32,360 INFO L175 Difference]: Start difference. First operand has 61 places, 46 transitions, 128 flow. Second operand 3 states and 422 transitions. [2023-08-03 23:50:32,360 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 55 transitions, 240 flow [2023-08-03 23:50:32,360 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 55 transitions, 238 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:50:32,361 INFO L231 Difference]: Finished difference. Result has 63 places, 47 transitions, 138 flow [2023-08-03 23:50:32,361 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=63, PETRI_TRANSITIONS=47} [2023-08-03 23:50:32,362 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 5 predicate places. [2023-08-03 23:50:32,362 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 47 transitions, 138 flow [2023-08-03 23:50:32,362 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:50:32,362 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:50:32,362 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:50:32,366 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 23:50:32,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:50:32,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:50:32,564 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:50:32,564 INFO L85 PathProgramCache]: Analyzing trace with hash -911844943, now seen corresponding path program 1 times [2023-08-03 23:50:32,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:50:32,564 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1396534226] [2023-08-03 23:50:32,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:32,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:50:32,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:32,606 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 23:50:32,606 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:50:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1396534226] [2023-08-03 23:50:32,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1396534226] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:50:32,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [147337796] [2023-08-03 23:50:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:32,607 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:50:32,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:50:32,608 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:50:32,617 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 23:50:32,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:32,696 INFO L262 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:50:32,699 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:50:32,707 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 23:50:32,707 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:50:32,707 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [147337796] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:50:32,707 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:50:32,707 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:50:32,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [102650344] [2023-08-03 23:50:32,707 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:50:32,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:50:32,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:50:32,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:50:32,708 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:50:32,716 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 125 out of 269 [2023-08-03 23:50:32,717 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 47 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-08-03 23:50:32,717 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:50:32,717 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 125 of 269 [2023-08-03 23:50:32,717 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:50:54,282 INFO L124 PetriNetUnfolderBase]: 197902/260926 cut-off events. [2023-08-03 23:50:54,282 INFO L125 PetriNetUnfolderBase]: For 1817/1817 co-relation queries the response was YES. [2023-08-03 23:50:55,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 516525 conditions, 260926 events. 197902/260926 cut-off events. For 1817/1817 co-relation queries the response was YES. Maximal size of possible extension queue 7713. Compared 1759340 event pairs, 154314 based on Foata normal form. 0/228042 useless extension candidates. Maximal degree in co-relation 149208. Up to 243657 conditions per place. [2023-08-03 23:50:55,890 INFO L140 encePairwiseOnDemand]: 266/269 looper letters, 53 selfloop transitions, 2 changer transitions 0/63 dead transitions. [2023-08-03 23:50:55,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 63 transitions, 280 flow [2023-08-03 23:50:55,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:50:55,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:50:55,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 429 transitions. [2023-08-03 23:50:55,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5315985130111525 [2023-08-03 23:50:55,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 429 transitions. [2023-08-03 23:50:55,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 429 transitions. [2023-08-03 23:50:55,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:50:55,893 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 429 transitions. [2023-08-03 23:50:55,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 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) [2023-08-03 23:50:55,894 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:55,894 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:50:55,894 INFO L175 Difference]: Start difference. First operand has 63 places, 47 transitions, 138 flow. Second operand 3 states and 429 transitions. [2023-08-03 23:50:55,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 63 transitions, 280 flow [2023-08-03 23:50:55,896 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 278 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:50:55,896 INFO L231 Difference]: Finished difference. Result has 65 places, 48 transitions, 148 flow [2023-08-03 23:50:55,896 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=65, PETRI_TRANSITIONS=48} [2023-08-03 23:50:55,897 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 7 predicate places. [2023-08-03 23:50:55,897 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 48 transitions, 148 flow [2023-08-03 23:50:55,897 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 129.0) internal successors, (387), 3 states have internal predecessors, (387), 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) [2023-08-03 23:50:55,897 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:50:55,897 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:50:55,902 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 23:50:56,098 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-08-03 23:50:56,098 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:50:56,099 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:50:56,099 INFO L85 PathProgramCache]: Analyzing trace with hash -911869311, now seen corresponding path program 1 times [2023-08-03 23:50:56,099 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:50:56,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [484615715] [2023-08-03 23:50:56,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:56,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:50:56,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:56,140 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 23:50:56,140 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:50:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [484615715] [2023-08-03 23:50:56,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [484615715] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:50:56,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1898623669] [2023-08-03 23:50:56,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:50:56,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:50:56,141 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:50:56,143 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:50:56,145 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 23:50:56,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:50:56,232 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:50:56,233 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:50:56,242 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 23:50:56,243 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:50:56,255 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 23:50:56,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1898623669] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:50:56,255 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:50:56,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:50:56,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535034207] [2023-08-03 23:50:56,255 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:50:56,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:50:56,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:50:56,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:50:56,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:50:56,268 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 269 [2023-08-03 23:50:56,269 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 48 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:50:56,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:50:56,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 269 [2023-08-03 23:50:56,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:51:11,116 INFO L124 PetriNetUnfolderBase]: 154888/200180 cut-off events. [2023-08-03 23:51:11,117 INFO L125 PetriNetUnfolderBase]: For 13704/13704 co-relation queries the response was YES. [2023-08-03 23:51:11,843 INFO L83 FinitePrefix]: Finished finitePrefix Result has 410024 conditions, 200180 events. 154888/200180 cut-off events. For 13704/13704 co-relation queries the response was YES. Maximal size of possible extension queue 6262. Compared 1250485 event pairs, 103236 based on Foata normal form. 3/178978 useless extension candidates. Maximal degree in co-relation 145264. Up to 193594 conditions per place. [2023-08-03 23:51:12,603 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 44 selfloop transitions, 3 changer transitions 1/56 dead transitions. [2023-08-03 23:51:12,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 260 flow [2023-08-03 23:51:12,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:51:12,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:51:12,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 543 transitions. [2023-08-03 23:51:12,605 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5046468401486989 [2023-08-03 23:51:12,605 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 543 transitions. [2023-08-03 23:51:12,605 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 543 transitions. [2023-08-03 23:51:12,605 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:51:12,605 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 543 transitions. [2023-08-03 23:51:12,606 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 135.75) internal successors, (543), 4 states have internal predecessors, (543), 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) [2023-08-03 23:51:12,608 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:12,608 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:12,608 INFO L175 Difference]: Start difference. First operand has 65 places, 48 transitions, 148 flow. Second operand 4 states and 543 transitions. [2023-08-03 23:51:12,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 260 flow [2023-08-03 23:51:12,621 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 56 transitions, 258 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:51:12,622 INFO L231 Difference]: Finished difference. Result has 69 places, 48 transitions, 160 flow [2023-08-03 23:51:12,622 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=69, PETRI_TRANSITIONS=48} [2023-08-03 23:51:12,622 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 11 predicate places. [2023-08-03 23:51:12,623 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 48 transitions, 160 flow [2023-08-03 23:51:12,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.2) internal successors, (636), 5 states have internal predecessors, (636), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:51:12,623 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:51:12,623 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:51:12,631 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 23:51:12,829 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:51:12,829 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:51:12,829 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:51:12,830 INFO L85 PathProgramCache]: Analyzing trace with hash 66305786, now seen corresponding path program 1 times [2023-08-03 23:51:12,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:51:12,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1716035971] [2023-08-03 23:51:12,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:12,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:51:12,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:51:12,868 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:51:12,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:51:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1716035971] [2023-08-03 23:51:12,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1716035971] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:51:12,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1428864539] [2023-08-03 23:51:12,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:12,868 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:51:12,869 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:51:12,870 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:51:12,877 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-08-03 23:51:12,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:51:12,963 INFO L262 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:51:12,964 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:51:12,977 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:51:12,977 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:51:12,990 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2023-08-03 23:51:12,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1428864539] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:51:12,990 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:51:12,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:51:12,991 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [581813207] [2023-08-03 23:51:12,991 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:51:12,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:51:12,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:51:12,991 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:51:12,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:51:13,002 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 269 [2023-08-03 23:51:13,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 48 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:51:13,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:51:13,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 269 [2023-08-03 23:51:13,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:51:25,217 INFO L124 PetriNetUnfolderBase]: 128752/165253 cut-off events. [2023-08-03 23:51:25,217 INFO L125 PetriNetUnfolderBase]: For 10125/10125 co-relation queries the response was YES. [2023-08-03 23:51:25,969 INFO L83 FinitePrefix]: Finished finitePrefix Result has 337469 conditions, 165253 events. 128752/165253 cut-off events. For 10125/10125 co-relation queries the response was YES. Maximal size of possible extension queue 5773. Compared 997658 event pairs, 81922 based on Foata normal form. 36/148440 useless extension candidates. Maximal degree in co-relation 119377. Up to 158524 conditions per place. [2023-08-03 23:51:26,437 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 55 selfloop transitions, 3 changer transitions 1/67 dead transitions. [2023-08-03 23:51:26,437 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 67 transitions, 316 flow [2023-08-03 23:51:26,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:51:26,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:51:26,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 554 transitions. [2023-08-03 23:51:26,439 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5148698884758365 [2023-08-03 23:51:26,439 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 554 transitions. [2023-08-03 23:51:26,439 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 554 transitions. [2023-08-03 23:51:26,439 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:51:26,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 554 transitions. [2023-08-03 23:51:26,441 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 138.5) internal successors, (554), 4 states have internal predecessors, (554), 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) [2023-08-03 23:51:26,442 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:26,442 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:26,442 INFO L175 Difference]: Start difference. First operand has 69 places, 48 transitions, 160 flow. Second operand 4 states and 554 transitions. [2023-08-03 23:51:26,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 67 transitions, 316 flow [2023-08-03 23:51:26,448 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 67 transitions, 309 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:51:26,449 INFO L231 Difference]: Finished difference. Result has 71 places, 48 transitions, 167 flow [2023-08-03 23:51:26,450 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=167, PETRI_PLACES=71, PETRI_TRANSITIONS=48} [2023-08-03 23:51:26,450 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-03 23:51:26,450 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 48 transitions, 167 flow [2023-08-03 23:51:26,451 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 127.4) internal successors, (637), 5 states have internal predecessors, (637), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:51:26,451 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:51:26,451 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:51:26,457 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-08-03 23:51:26,655 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-08-03 23:51:26,656 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:51:26,656 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:51:26,656 INFO L85 PathProgramCache]: Analyzing trace with hash -844776351, now seen corresponding path program 1 times [2023-08-03 23:51:26,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:51:26,657 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [374052394] [2023-08-03 23:51:26,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:26,657 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:51:26,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:51:26,781 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:51:26,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:51:26,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [374052394] [2023-08-03 23:51:26,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [374052394] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:51:26,782 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:51:26,782 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 23:51:26,783 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449304771] [2023-08-03 23:51:26,783 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:51:26,783 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:51:26,784 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:51:26,784 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:51:26,784 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:51:26,785 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 269 [2023-08-03 23:51:26,786 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 48 transitions, 167 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) [2023-08-03 23:51:26,786 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:51:26,786 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 269 [2023-08-03 23:51:26,786 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:51:37,236 INFO L124 PetriNetUnfolderBase]: 110296/143773 cut-off events. [2023-08-03 23:51:37,236 INFO L125 PetriNetUnfolderBase]: For 10594/10594 co-relation queries the response was YES. [2023-08-03 23:51:37,731 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291853 conditions, 143773 events. 110296/143773 cut-off events. For 10594/10594 co-relation queries the response was YES. Maximal size of possible extension queue 5182. Compared 895835 event pairs, 17560 based on Foata normal form. 0/132972 useless extension candidates. Maximal degree in co-relation 103244. Up to 127009 conditions per place. [2023-08-03 23:51:38,124 INFO L140 encePairwiseOnDemand]: 264/269 looper letters, 57 selfloop transitions, 3 changer transitions 0/68 dead transitions. [2023-08-03 23:51:38,124 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 68 transitions, 338 flow [2023-08-03 23:51:38,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:51:38,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:51:38,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 442 transitions. [2023-08-03 23:51:38,125 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5477075588599752 [2023-08-03 23:51:38,125 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 442 transitions. [2023-08-03 23:51:38,125 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 442 transitions. [2023-08-03 23:51:38,126 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:51:38,126 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 442 transitions. [2023-08-03 23:51:38,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 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) [2023-08-03 23:51:38,128 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:51:38,128 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 269.0) internal successors, (1076), 4 states have internal predecessors, (1076), 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) [2023-08-03 23:51:38,128 INFO L175 Difference]: Start difference. First operand has 71 places, 48 transitions, 167 flow. Second operand 3 states and 442 transitions. [2023-08-03 23:51:38,128 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 68 transitions, 338 flow [2023-08-03 23:51:38,132 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 68 transitions, 331 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:51:38,133 INFO L231 Difference]: Finished difference. Result has 71 places, 50 transitions, 181 flow [2023-08-03 23:51:38,134 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=160, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=181, PETRI_PLACES=71, PETRI_TRANSITIONS=50} [2023-08-03 23:51:38,134 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 13 predicate places. [2023-08-03 23:51:38,134 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 50 transitions, 181 flow [2023-08-03 23:51:38,134 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) [2023-08-03 23:51:38,134 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:51:38,135 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:51:38,135 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-08-03 23:51:38,135 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:51:38,135 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:51:38,135 INFO L85 PathProgramCache]: Analyzing trace with hash -981983354, now seen corresponding path program 1 times [2023-08-03 23:51:38,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:51:38,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596656072] [2023-08-03 23:51:38,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:38,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:51:38,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:51:38,185 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:51:38,185 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:51:38,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596656072] [2023-08-03 23:51:38,185 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596656072] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:51:38,185 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [857103679] [2023-08-03 23:51:38,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:38,185 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:51:38,186 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:51:38,187 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 23:51:38,189 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-08-03 23:51:38,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:51:38,293 INFO L262 TraceCheckSpWp]: Trace formula consists of 234 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:51:38,301 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:51:38,313 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:51:38,313 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:51:38,324 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 23:51:38,324 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [857103679] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:51:38,324 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:51:38,324 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:51:38,324 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884176] [2023-08-03 23:51:38,325 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:51:38,325 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:51:38,325 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:51:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:51:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:51:38,335 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 124 out of 269 [2023-08-03 23:51:38,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 50 transitions, 181 flow. Second operand has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 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) [2023-08-03 23:51:38,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:51:38,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 124 of 269 [2023-08-03 23:51:38,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:51:48,308 INFO L124 PetriNetUnfolderBase]: 102040/129325 cut-off events. [2023-08-03 23:51:48,308 INFO L125 PetriNetUnfolderBase]: For 13957/13957 co-relation queries the response was YES. [2023-08-03 23:51:48,761 INFO L83 FinitePrefix]: Finished finitePrefix Result has 283397 conditions, 129325 events. 102040/129325 cut-off events. For 13957/13957 co-relation queries the response was YES. Maximal size of possible extension queue 4787. Compared 745759 event pairs, 49000 based on Foata normal form. 576/120396 useless extension candidates. Maximal degree in co-relation 99913. Up to 86596 conditions per place. [2023-08-03 23:51:49,315 INFO L140 encePairwiseOnDemand]: 265/269 looper letters, 73 selfloop transitions, 4 changer transitions 0/85 dead transitions. [2023-08-03 23:51:49,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 85 transitions, 422 flow [2023-08-03 23:51:49,316 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:51:49,316 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:51:49,317 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 568 transitions. [2023-08-03 23:51:49,317 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5278810408921933 [2023-08-03 23:51:49,317 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 568 transitions. [2023-08-03 23:51:49,317 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 568 transitions. [2023-08-03 23:51:49,318 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:51:49,318 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 568 transitions. [2023-08-03 23:51:49,319 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 142.0) internal successors, (568), 4 states have internal predecessors, (568), 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) [2023-08-03 23:51:49,320 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:49,321 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 269.0) internal successors, (1345), 5 states have internal predecessors, (1345), 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) [2023-08-03 23:51:49,321 INFO L175 Difference]: Start difference. First operand has 71 places, 50 transitions, 181 flow. Second operand 4 states and 568 transitions. [2023-08-03 23:51:49,321 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 85 transitions, 422 flow [2023-08-03 23:51:49,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 85 transitions, 416 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:51:49,326 INFO L231 Difference]: Finished difference. Result has 75 places, 51 transitions, 198 flow [2023-08-03 23:51:49,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=269, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=198, PETRI_PLACES=75, PETRI_TRANSITIONS=51} [2023-08-03 23:51:49,326 INFO L281 CegarLoopForPetriNet]: 58 programPoint places, 17 predicate places. [2023-08-03 23:51:49,326 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 51 transitions, 198 flow [2023-08-03 23:51:49,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 128.2) internal successors, (641), 5 states have internal predecessors, (641), 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) [2023-08-03 23:51:49,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:51:49,327 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:51:49,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-08-03 23:51:49,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 23:51:49,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION, P2Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:51:49,533 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:51:49,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2037409403, now seen corresponding path program 1 times [2023-08-03 23:51:49,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:51:49,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [652810566] [2023-08-03 23:51:49,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:51:49,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:51:49,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:51:49,559 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:51:49,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:51:49,592 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:51:49,592 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:51:49,593 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 23:51:49,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 23:51:49,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 23:51:49,593 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 23:51:49,593 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-08-03 23:51:49,593 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:51:49,594 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-03 23:51:49,597 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 23:51:49,597 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 23:51:49,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 11:51:49 BasicIcfg [2023-08-03 23:51:49,687 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 23:51:49,687 INFO L158 Benchmark]: Toolchain (without parser) took 170183.41ms. Allocated memory was 572.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 522.8MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 23:51:49,688 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 308.7MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 23:51:49,688 INFO L158 Benchmark]: CACSL2BoogieTranslator took 513.78ms. Allocated memory is still 572.5MB. Free memory was 522.8MB in the beginning and 499.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 23:51:49,688 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.46ms. Allocated memory is still 572.5MB. Free memory was 499.7MB in the beginning and 497.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:51:49,688 INFO L158 Benchmark]: Boogie Preprocessor took 45.97ms. Allocated memory is still 572.5MB. Free memory was 497.3MB in the beginning and 495.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:51:49,688 INFO L158 Benchmark]: RCFGBuilder took 573.34ms. Allocated memory is still 572.5MB. Free memory was 495.2MB in the beginning and 531.7MB in the end (delta: -36.6MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. [2023-08-03 23:51:49,689 INFO L158 Benchmark]: TraceAbstraction took 168992.44ms. Allocated memory was 572.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 530.7MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. [2023-08-03 23:51:49,690 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 358.6MB. Free memory is still 308.7MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 513.78ms. Allocated memory is still 572.5MB. Free memory was 522.8MB in the beginning and 499.7MB in the end (delta: 23.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 52.46ms. Allocated memory is still 572.5MB. Free memory was 499.7MB in the beginning and 497.3MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 45.97ms. Allocated memory is still 572.5MB. Free memory was 497.3MB in the beginning and 495.2MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 573.34ms. Allocated memory is still 572.5MB. Free memory was 495.2MB in the beginning and 531.7MB in the end (delta: -36.6MB). Peak memory consumption was 31.6MB. Max. memory is 16.0GB. * TraceAbstraction took 168992.44ms. Allocated memory was 572.5MB in the beginning and 16.0GB in the end (delta: 15.4GB). Free memory was 530.7MB in the beginning and 9.6GB in the end (delta: -9.1GB). Peak memory consumption was 6.3GB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] - GenericResultAtLocation [Line: 267]: Unsoundness Warning unspecified type, defaulting to int C: short [267] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.0s, 103 PlacesBefore, 32 PlacesAfterwards, 98 TransitionsBefore, 25 TransitionsAfterwards, 1204 CoEnabledTransitionPairs, 7 FixpointIterations, 36 TrivialSequentialCompositions, 31 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 79 TotalNumberOfCompositions, 2864 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1701, independent: 1588, independent conditional: 0, independent unconditional: 1588, dependent: 113, dependent conditional: 0, dependent unconditional: 113, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 618, independent: 605, independent conditional: 0, independent unconditional: 605, dependent: 13, dependent conditional: 0, dependent unconditional: 13, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1701, independent: 983, independent conditional: 0, independent unconditional: 983, dependent: 100, dependent conditional: 0, dependent unconditional: 100, unknown: 618, unknown conditional: 0, unknown unconditional: 618] , Statistics on independence cache: Total cache size (in pairs): 72, Positive cache size: 66, Positive conditional cache size: 0, Positive unconditional cache size: 66, Negative cache size: 6, Negative conditional cache size: 0, Negative unconditional cache size: 6, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 132 PlacesBefore, 55 PlacesAfterwards, 121 TransitionsBefore, 42 TransitionsAfterwards, 3320 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 86 TotalNumberOfCompositions, 9145 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 3991, independent: 3795, independent conditional: 0, independent unconditional: 3795, dependent: 196, dependent conditional: 0, dependent unconditional: 196, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1633, independent: 1599, independent conditional: 0, independent unconditional: 1599, dependent: 34, dependent conditional: 0, dependent unconditional: 34, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 3991, independent: 2196, independent conditional: 0, independent unconditional: 2196, dependent: 162, dependent conditional: 0, dependent unconditional: 162, unknown: 1633, unknown conditional: 0, unknown unconditional: 1633] , Statistics on independence cache: Total cache size (in pairs): 247, Positive cache size: 231, Positive conditional cache size: 0, Positive unconditional cache size: 231, Negative cache size: 16, Negative conditional cache size: 0, Negative unconditional cache size: 16, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.2s, 156 PlacesBefore, 58 PlacesAfterwards, 148 TransitionsBefore, 46 TransitionsAfterwards, 5568 CoEnabledTransitionPairs, 6 FixpointIterations, 36 TrivialSequentialCompositions, 63 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 16 ConcurrentYvCompositions, 4 ChoiceCompositions, 119 TotalNumberOfCompositions, 13834 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6091, independent: 5861, independent conditional: 0, independent unconditional: 5861, dependent: 230, dependent conditional: 0, dependent unconditional: 230, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 2915, independent: 2853, independent conditional: 0, independent unconditional: 2853, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6091, independent: 3008, independent conditional: 0, independent unconditional: 3008, dependent: 168, dependent conditional: 0, dependent unconditional: 168, unknown: 2915, unknown conditional: 0, unknown unconditional: 2915] , Statistics on independence cache: Total cache size (in pairs): 272, Positive cache size: 246, Positive conditional cache size: 0, Positive unconditional cache size: 246, Negative cache size: 26, Negative conditional cache size: 0, Negative unconditional cache size: 26, 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; [L714] 0 _Bool main$tmp_guard0; [L715] 0 _Bool main$tmp_guard1; [L717] 0 int x = 0; [L719] 0 int y = 0; [L720] 0 _Bool y$flush_delayed; [L721] 0 int y$mem_tmp; [L722] 0 _Bool y$r_buff0_thd0; [L723] 0 _Bool y$r_buff0_thd1; [L724] 0 _Bool y$r_buff0_thd2; [L725] 0 _Bool y$r_buff0_thd3; [L726] 0 _Bool y$r_buff1_thd0; [L727] 0 _Bool y$r_buff1_thd1; [L728] 0 _Bool y$r_buff1_thd2; [L729] 0 _Bool y$r_buff1_thd3; [L730] 0 _Bool y$read_delayed; [L731] 0 int *y$read_delayed_var; [L732] 0 int y$w_buff0; [L733] 0 _Bool y$w_buff0_used; [L734] 0 int y$w_buff1; [L735] 0 _Bool y$w_buff1_used; [L737] 0 int z = 0; [L738] 0 _Bool weak$$choice0; [L739] 0 _Bool weak$$choice2; [L823] 0 pthread_t t1394[2]; [L824] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0))=-6, t1394={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND TRUE 0 asdf<2 [L824] FCALL, FORK 0 pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1394[asdf], ((void *)0), P0, ((void *)0))=-5, t1394={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L824] COND FALSE 0 !(asdf<2) [L825] 0 pthread_t t1395[2]; [L826] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0))=-4, t1394={5:0}, t1395={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1395[asdf], ((void *)0), P1, ((void *)0))=-3, t1394={5:0}, t1395={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L826] COND FALSE 0 !(asdf<2) [L827] 0 pthread_t t1396[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, t1396={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=0, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0))=-2, t1394={5:0}, t1395={6:0}, t1396={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=0, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=0, y$w_buff0_used=0, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L786] 5 y$w_buff1 = y$w_buff0 [L787] 5 y$w_buff0 = 1 [L788] 5 y$w_buff1_used = y$w_buff0_used [L789] 5 y$w_buff0_used = (_Bool)1 [L790] CALL 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND FALSE 5 !(!expression) [L790] RET 5 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L791] 5 y$r_buff1_thd0 = y$r_buff0_thd0 [L792] 5 y$r_buff1_thd1 = y$r_buff0_thd1 [L793] 5 y$r_buff1_thd2 = y$r_buff0_thd2 [L794] 5 y$r_buff1_thd3 = y$r_buff0_thd3 [L795] 5 y$r_buff0_thd3 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t1394={5:0}, t1395={6:0}, t1396={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, asdf=1, asdf=2, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t1396[asdf], ((void *)0), P2, ((void *)0))=-1, t1394={5:0}, t1395={6:0}, t1396={3:0}, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=0, y$w_buff1_used=0, y=0, z=0] [L786] 6 y$w_buff1 = y$w_buff0 [L787] 6 y$w_buff0 = 1 [L788] 6 y$w_buff1_used = y$w_buff0_used [L789] 6 y$w_buff0_used = (_Bool)1 [L790] CALL 6 __VERIFIER_assert(!(y$w_buff1_used && y$w_buff0_used)) [L18] COND TRUE 6 !expression [L18] 6 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, arg={0:0}, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x=0, y$flush_delayed=0, y$mem_tmp=0, y$r_buff0_thd0=0, y$r_buff0_thd1=0, y$r_buff0_thd2=0, y$r_buff0_thd3=1, y$r_buff1_thd0=0, y$r_buff1_thd1=0, y$r_buff1_thd2=0, y$r_buff1_thd3=0, y$read_delayed=0, y$read_delayed_var={0:0}, y$w_buff0=1, y$w_buff0_used=1, y$w_buff1=1, y$w_buff1_used=1, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 146 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: 3.5s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=65occurred 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 - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 2 thread instances CFG has 10 procedures, 169 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: 42.1s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 36.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 273 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 215 mSDsluCounter, 9 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 20 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 670 IncrementalHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 20 mSolverCounterUnsat, 9 mSDtfsCounter, 670 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 164 GetRequests, 139 SyntacticMatches, 4 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=153occurred in iteration=5, InterpolantAutomatonStates: 28, 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: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 228 NumberOfCodeBlocks, 228 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 251 ConstructedInterpolants, 0 QuantifiedInterpolants, 421 SizeOfPredicates, 0 NumberOfNonLiveVariables, 1119 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 15 InterpolantComputations, 5 PerfectInterpolantSequences, 138/158 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 1 thread instances CFG has 10 procedures, 169 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: 123.2s, OverallIterations: 8, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 117.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 211 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 156 mSDsluCounter, 15 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 26 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 722 IncrementalHoareTripleChecker+Invalid, 748 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 26 mSolverCounterUnsat, 15 mSDtfsCounter, 722 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 152 GetRequests, 129 SyntacticMatches, 6 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=198occurred in iteration=7, InterpolantAutomatonStates: 24, 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: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 219 NumberOfCodeBlocks, 219 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 235 ConstructedInterpolants, 0 QuantifiedInterpolants, 393 SizeOfPredicates, 0 NumberOfNonLiveVariables, 968 ConjunctsInSsa, 13 ConjunctsInUnsatCore, 15 InterpolantComputations, 4 PerfectInterpolantSequences, 73/84 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! [2023-08-03 23:51:49,721 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...