/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_mix019_tso.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 23:21:40,818 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 23:21:40,894 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 23:21:40,899 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 23:21:40,899 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 23:21:40,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 23:21:40,900 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 23:21:40,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 23:21:40,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 23:21:40,940 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 23:21:40,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 23:21:40,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 23:21:40,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 23:21:40,943 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 23:21:40,943 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 23:21:40,944 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 23:21:40,944 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 23:21:40,944 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 23:21:40,944 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 23:21:40,945 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 23:21:40,945 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 23:21:40,945 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 23:21:40,945 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 23:21:40,946 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 23:21:40,946 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 23:21:40,946 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 23:21:40,946 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 23:21:40,947 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 23:21:40,947 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 23:21:40,947 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 23:21:40,948 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:21:40,948 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 23:21:40,948 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 23:21:40,949 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 23:21:40,950 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-03 23:21:41,182 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 23:21:41,215 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 23:21:41,217 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 23:21:41,218 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 23:21:41,218 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 23:21:41,219 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-03 23:21:42,396 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 23:21:42,723 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 23:21:42,724 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-03 23:21:42,743 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef88a7b1/e19c5a3241cf4fbba1fb2bbc50d6fc63/FLAGba31065e6 [2023-08-03 23:21:42,758 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5ef88a7b1/e19c5a3241cf4fbba1fb2bbc50d6fc63 [2023-08-03 23:21:42,763 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 23:21:42,765 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 23:21:42,766 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 23:21:42,766 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 23:21:42,771 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 23:21:42,771 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:21:42" (1/1) ... [2023-08-03 23:21:42,772 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25872b5b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:42, skipping insertion in model container [2023-08-03 23:21:42,772 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 11:21:42" (1/1) ... [2023-08-03 23:21:42,824 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 23:21:42,945 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i[949,962] [2023-08-03 23:21:43,095 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:21:43,103 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 23:21:43,113 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_mix019_tso.oepc_bound2.i[949,962] [2023-08-03 23:21:43,121 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:21:43,123 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [267] [2023-08-03 23:21:43,165 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 23:21:43,193 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:21:43,194 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 23:21:43,200 INFO L206 MainTranslator]: Completed translation [2023-08-03 23:21:43,200 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43 WrapperNode [2023-08-03 23:21:43,200 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 23:21:43,201 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 23:21:43,201 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 23:21:43,201 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 23:21:43,207 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,234 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,260 INFO L138 Inliner]: procedures = 176, calls = 56, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 170 [2023-08-03 23:21:43,261 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 23:21:43,261 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 23:21:43,261 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 23:21:43,262 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 23:21:43,279 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,280 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,283 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,283 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,292 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,295 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,309 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,311 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,316 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 23:21:43,318 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 23:21:43,318 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 23:21:43,318 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 23:21:43,319 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (1/1) ... [2023-08-03 23:21:43,324 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 23:21:43,336 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:21:43,362 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 23:21:43,392 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 23:21:43,406 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 23:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 23:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 23:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 23:21:43,407 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 23:21:43,408 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 23:21:43,408 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 23:21:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 23:21:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 23:21:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 23:21:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 23:21:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 23:21:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 23:21:43,409 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 23:21:43,409 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 23:21:43,410 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 23:21:43,567 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 23:21:43,570 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 23:21:43,917 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 23:21:44,072 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 23:21:44,073 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 23:21:44,076 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:21:44 BoogieIcfgContainer [2023-08-03 23:21:44,076 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 23:21:44,079 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 23:21:44,080 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 23:21:44,083 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 23:21:44,083 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 11:21:42" (1/3) ... [2023-08-03 23:21:44,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b30b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:21:44, skipping insertion in model container [2023-08-03 23:21:44,085 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 11:21:43" (2/3) ... [2023-08-03 23:21:44,085 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b30b71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 11:21:44, skipping insertion in model container [2023-08-03 23:21:44,086 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 11:21:44" (3/3) ... [2023-08-03 23:21:44,087 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_mix019_tso.oepc_bound2.i [2023-08-03 23:21:44,098 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 23:21:44,107 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 23:21:44,107 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 23:21:44,107 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 23:21:44,172 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:21:44,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 133 places, 131 transitions, 277 flow [2023-08-03 23:21:44,320 INFO L124 PetriNetUnfolderBase]: 30/454 cut-off events. [2023-08-03 23:21:44,320 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:21:44,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479 conditions, 454 events. 30/454 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 2006 event pairs, 0 based on Foata normal form. 0/400 useless extension candidates. Maximal degree in co-relation 271. Up to 16 conditions per place. [2023-08-03 23:21:44,326 INFO L82 GeneralOperation]: Start removeDead. Operand has 133 places, 131 transitions, 277 flow [2023-08-03 23:21:44,330 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 107 places, 102 transitions, 219 flow [2023-08-03 23:21:44,333 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:21:44,349 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-03 23:21:44,353 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 107 places, 102 transitions, 219 flow [2023-08-03 23:21:44,353 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 107 places, 102 transitions, 219 flow [2023-08-03 23:21:44,409 INFO L124 PetriNetUnfolderBase]: 6/222 cut-off events. [2023-08-03 23:21:44,409 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:21:44,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 247 conditions, 222 events. 6/222 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 8. Compared 662 event pairs, 0 based on Foata normal form. 0/208 useless extension candidates. Maximal degree in co-relation 155. Up to 8 conditions per place. [2023-08-03 23:21:44,413 INFO L119 LiptonReduction]: Number of co-enabled transitions 1472 [2023-08-03 23:21:47,324 INFO L134 LiptonReduction]: Checked pairs total: 3635 [2023-08-03 23:21:47,325 INFO L136 LiptonReduction]: Total number of compositions: 81 [2023-08-03 23:21:47,335 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:21:47,340 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;@ecdf795, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:21:47,341 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:21:47,345 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:21:47,346 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 23:21:47,346 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:21:47,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:21:47,346 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 23:21:47,347 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 23:21:47,351 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:21:47,351 INFO L85 PathProgramCache]: Analyzing trace with hash -1257127306, now seen corresponding path program 1 times [2023-08-03 23:21:47,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:21:47,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1092721328] [2023-08-03 23:21:47,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:21:47,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:21:47,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:21:47,490 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:21:47,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:21:47,551 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:21:47,553 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:21:47,554 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:21:47,574 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:21:47,575 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:21:47,575 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 23:21:47,576 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 23:21:47,581 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-03 23:21:47,582 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 23:21:47,582 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 23:21:47,619 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 23:21:47,625 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 157 transitions, 350 flow [2023-08-03 23:21:47,807 INFO L124 PetriNetUnfolderBase]: 93/1400 cut-off events. [2023-08-03 23:21:47,807 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:21:47,818 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 1400 events. 93/1400 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9702 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 1014. Up to 54 conditions per place. [2023-08-03 23:21:47,819 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 157 transitions, 350 flow [2023-08-03 23:21:47,822 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 139 places, 128 transitions, 292 flow [2023-08-03 23:21:47,822 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:21:47,822 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 139 places, 128 transitions, 292 flow [2023-08-03 23:21:47,823 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 139 places, 128 transitions, 292 flow [2023-08-03 23:21:47,823 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 139 places, 128 transitions, 292 flow [2023-08-03 23:21:47,884 INFO L124 PetriNetUnfolderBase]: 12/617 cut-off events. [2023-08-03 23:21:47,885 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:21:47,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 715 conditions, 617 events. 12/617 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 16. Compared 3207 event pairs, 0 based on Foata normal form. 0/587 useless extension candidates. Maximal degree in co-relation 492. Up to 27 conditions per place. [2023-08-03 23:21:47,899 INFO L119 LiptonReduction]: Number of co-enabled transitions 4136 [2023-08-03 23:21:50,917 INFO L134 LiptonReduction]: Checked pairs total: 15588 [2023-08-03 23:21:50,918 INFO L136 LiptonReduction]: Total number of compositions: 87 [2023-08-03 23:21:50,919 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-03 23:21:50,920 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;@ecdf795, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:21:50,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-03 23:21:50,927 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:21:50,928 INFO L124 PetriNetUnfolderBase]: 0/69 cut-off events. [2023-08-03 23:21:50,928 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-03 23:21:50,928 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:21:50,928 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2023-08-03 23:21:50,928 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:21:50,929 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:21:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash 2002174169, now seen corresponding path program 1 times [2023-08-03 23:21:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:21:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676526951] [2023-08-03 23:21:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:21:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:21:50,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:21:51,024 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 23:21:51,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:21:51,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676526951] [2023-08-03 23:21:51,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676526951] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:21:51,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:21:51,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:21:51,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129562029] [2023-08-03 23:21:51,027 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:21:51,032 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:21:51,036 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:21:51,051 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:21:51,052 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:21:51,073 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 244 [2023-08-03 23:21:51,078 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 48 transitions, 132 flow. Second operand has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 23:21:51,079 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:21:51,079 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 244 [2023-08-03 23:21:51,080 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:03,303 INFO L124 PetriNetUnfolderBase]: 99287/134187 cut-off events. [2023-08-03 23:22:03,303 INFO L125 PetriNetUnfolderBase]: For 8640/8640 co-relation queries the response was YES. [2023-08-03 23:22:03,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271086 conditions, 134187 events. 99287/134187 cut-off events. For 8640/8640 co-relation queries the response was YES. Maximal size of possible extension queue 4236. Compared 926454 event pairs, 78800 based on Foata normal form. 0/120331 useless extension candidates. Maximal degree in co-relation 62830. Up to 126604 conditions per place. [2023-08-03 23:22:04,212 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 37 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2023-08-03 23:22:04,212 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 63 places, 53 transitions, 220 flow [2023-08-03 23:22:04,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:22:04,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:22:04,224 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 427 transitions. [2023-08-03 23:22:04,227 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2023-08-03 23:22:04,228 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 427 transitions. [2023-08-03 23:22:04,228 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 427 transitions. [2023-08-03 23:22:04,230 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:04,232 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 427 transitions. [2023-08-03 23:22:04,236 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 142.33333333333334) internal successors, (427), 3 states have internal predecessors, (427), 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 23:22:04,240 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 23:22:04,240 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 23:22:04,241 INFO L175 Difference]: Start difference. First operand has 61 places, 48 transitions, 132 flow. Second operand 3 states and 427 transitions. [2023-08-03 23:22:04,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 63 places, 53 transitions, 220 flow [2023-08-03 23:22:04,261 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 53 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 23:22:04,263 INFO L231 Difference]: Finished difference. Result has 64 places, 49 transitions, 138 flow [2023-08-03 23:22:04,264 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=64, PETRI_TRANSITIONS=49} [2023-08-03 23:22:04,267 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 3 predicate places. [2023-08-03 23:22:04,267 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 49 transitions, 138 flow [2023-08-03 23:22:04,268 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 131.0) internal successors, (393), 3 states have internal predecessors, (393), 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 23:22:04,268 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:04,268 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 23:22:04,268 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 23:22:04,268 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:04,269 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:04,269 INFO L85 PathProgramCache]: Analyzing trace with hash -1937252834, now seen corresponding path program 1 times [2023-08-03 23:22:04,269 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:04,269 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2059140898] [2023-08-03 23:22:04,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:04,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:04,395 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 23:22:04,395 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2059140898] [2023-08-03 23:22:04,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2059140898] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:04,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2114264782] [2023-08-03 23:22:04,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:04,396 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:04,397 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:04,401 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 23:22:04,405 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 23:22:04,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:04,493 INFO L262 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:22:04,495 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:04,565 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 23:22:04,565 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:22:04,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2114264782] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:22:04,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:22:04,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 23:22:04,566 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278700901] [2023-08-03 23:22:04,566 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:22:04,566 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:22:04,567 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:04,567 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:22:04,567 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:22:04,583 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 244 [2023-08-03 23:22:04,584 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 49 transitions, 138 flow. Second operand has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 23:22:04,584 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:04,584 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 244 [2023-08-03 23:22:04,585 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:15,697 INFO L124 PetriNetUnfolderBase]: 99263/134239 cut-off events. [2023-08-03 23:22:15,698 INFO L125 PetriNetUnfolderBase]: For 7984/7984 co-relation queries the response was YES. [2023-08-03 23:22:15,962 INFO L83 FinitePrefix]: Finished finitePrefix Result has 270517 conditions, 134239 events. 99263/134239 cut-off events. For 7984/7984 co-relation queries the response was YES. Maximal size of possible extension queue 4236. Compared 928288 event pairs, 62420 based on Foata normal form. 16/120415 useless extension candidates. Maximal degree in co-relation 71032. Up to 126521 conditions per place. [2023-08-03 23:22:16,449 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 42 selfloop transitions, 4 changer transitions 0/59 dead transitions. [2023-08-03 23:22:16,449 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 59 transitions, 250 flow [2023-08-03 23:22:16,450 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:22:16,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:22:16,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 687 transitions. [2023-08-03 23:22:16,453 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5631147540983606 [2023-08-03 23:22:16,453 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 687 transitions. [2023-08-03 23:22:16,453 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 687 transitions. [2023-08-03 23:22:16,453 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:16,453 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 687 transitions. [2023-08-03 23:22:16,455 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 137.4) internal successors, (687), 5 states have internal predecessors, (687), 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 23:22:16,458 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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 23:22:16,459 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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 23:22:16,459 INFO L175 Difference]: Start difference. First operand has 64 places, 49 transitions, 138 flow. Second operand 5 states and 687 transitions. [2023-08-03 23:22:16,459 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 67 places, 59 transitions, 250 flow [2023-08-03 23:22:16,462 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 59 transitions, 247 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 23:22:16,463 INFO L231 Difference]: Finished difference. Result has 67 places, 49 transitions, 152 flow [2023-08-03 23:22:16,463 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=131, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=152, PETRI_PLACES=67, PETRI_TRANSITIONS=49} [2023-08-03 23:22:16,464 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 6 predicate places. [2023-08-03 23:22:16,464 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 49 transitions, 152 flow [2023-08-03 23:22:16,465 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 129.6) internal successors, (648), 5 states have internal predecessors, (648), 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 23:22:16,465 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:16,465 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:22:16,477 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-03 23:22:16,670 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 23:22:16,671 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:16,671 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash 2146905903, now seen corresponding path program 1 times [2023-08-03 23:22:16,672 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:16,672 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [234099035] [2023-08-03 23:22:16,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:16,672 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:16,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:16,736 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 23:22:16,737 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:16,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [234099035] [2023-08-03 23:22:16,737 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [234099035] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:16,737 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1811404171] [2023-08-03 23:22:16,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:16,737 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:16,737 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:16,739 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 23:22:16,741 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 23:22:16,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:16,822 INFO L262 TraceCheckSpWp]: Trace formula consists of 183 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 23:22:16,823 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:16,832 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 23:22:16,833 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:22:16,833 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1811404171] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:22:16,833 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:22:16,833 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 23:22:16,833 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78715265] [2023-08-03 23:22:16,833 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:22:16,834 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:22:16,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:16,834 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:22:16,834 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:22:16,843 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 244 [2023-08-03 23:22:16,844 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 49 transitions, 152 flow. Second operand has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 23:22:16,844 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:16,844 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 244 [2023-08-03 23:22:16,844 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:27,790 INFO L124 PetriNetUnfolderBase]: 97376/137117 cut-off events. [2023-08-03 23:22:27,790 INFO L125 PetriNetUnfolderBase]: For 7483/7483 co-relation queries the response was YES. [2023-08-03 23:22:28,064 INFO L83 FinitePrefix]: Finished finitePrefix Result has 271451 conditions, 137117 events. 97376/137117 cut-off events. For 7483/7483 co-relation queries the response was YES. Maximal size of possible extension queue 4512. Compared 1028855 event pairs, 76147 based on Foata normal form. 0/124497 useless extension candidates. Maximal degree in co-relation 106437. Up to 123534 conditions per place. [2023-08-03 23:22:28,580 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 45 selfloop transitions, 3 changer transitions 0/61 dead transitions. [2023-08-03 23:22:28,580 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 61 transitions, 272 flow [2023-08-03 23:22:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:22:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:22:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 434 transitions. [2023-08-03 23:22:28,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.592896174863388 [2023-08-03 23:22:28,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 434 transitions. [2023-08-03 23:22:28,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 434 transitions. [2023-08-03 23:22:28,584 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:28,584 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 434 transitions. [2023-08-03 23:22:28,585 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 144.66666666666666) internal successors, (434), 3 states have internal predecessors, (434), 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 23:22:28,586 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 23:22:28,587 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 244.0) internal successors, (976), 4 states have internal predecessors, (976), 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 23:22:28,587 INFO L175 Difference]: Start difference. First operand has 67 places, 49 transitions, 152 flow. Second operand 3 states and 434 transitions. [2023-08-03 23:22:28,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 61 transitions, 272 flow [2023-08-03 23:22:28,590 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 61 transitions, 265 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 23:22:28,591 INFO L231 Difference]: Finished difference. Result has 68 places, 50 transitions, 160 flow [2023-08-03 23:22:28,591 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=145, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=160, PETRI_PLACES=68, PETRI_TRANSITIONS=50} [2023-08-03 23:22:28,592 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 7 predicate places. [2023-08-03 23:22:28,592 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 50 transitions, 160 flow [2023-08-03 23:22:28,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 132.0) internal successors, (396), 3 states have internal predecessors, (396), 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 23:22:28,593 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:28,593 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:22:28,598 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 23:22:28,797 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 23:22:28,798 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:28,798 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:28,798 INFO L85 PathProgramCache]: Analyzing trace with hash -21038385, now seen corresponding path program 1 times [2023-08-03 23:22:28,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:28,798 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80112289] [2023-08-03 23:22:28,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:28,798 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:28,859 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 23:22:28,860 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80112289] [2023-08-03 23:22:28,860 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80112289] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:28,860 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1899621186] [2023-08-03 23:22:28,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:28,860 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:28,861 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:28,862 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 23:22:28,886 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 23:22:28,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:28,956 INFO L262 TraceCheckSpWp]: Trace formula consists of 169 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:22:28,957 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:28,967 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 23:22:28,967 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:22:28,985 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 23:22:28,985 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1899621186] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:22:28,985 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:22:28,985 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:22:28,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179894661] [2023-08-03 23:22:28,985 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:22:28,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:22:28,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:28,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:22:28,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:22:29,003 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 244 [2023-08-03 23:22:29,004 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 50 transitions, 160 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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 23:22:29,004 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:29,004 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 244 [2023-08-03 23:22:29,004 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:37,865 INFO L124 PetriNetUnfolderBase]: 81082/112882 cut-off events. [2023-08-03 23:22:37,865 INFO L125 PetriNetUnfolderBase]: For 7000/7000 co-relation queries the response was YES. [2023-08-03 23:22:38,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 224578 conditions, 112882 events. 81082/112882 cut-off events. For 7000/7000 co-relation queries the response was YES. Maximal size of possible extension queue 3954. Compared 811297 event pairs, 49312 based on Foata normal form. 4/103270 useless extension candidates. Maximal degree in co-relation 58771. Up to 102233 conditions per place. [2023-08-03 23:22:38,544 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 43 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 23:22:38,545 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 265 flow [2023-08-03 23:22:38,545 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:22:38,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:22:38,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 558 transitions. [2023-08-03 23:22:38,546 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5717213114754098 [2023-08-03 23:22:38,547 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 558 transitions. [2023-08-03 23:22:38,547 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 558 transitions. [2023-08-03 23:22:38,547 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:38,547 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 558 transitions. [2023-08-03 23:22:38,548 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 139.5) internal successors, (558), 4 states have internal predecessors, (558), 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 23:22:38,550 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:22:38,551 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:22:38,551 INFO L175 Difference]: Start difference. First operand has 68 places, 50 transitions, 160 flow. Second operand 4 states and 558 transitions. [2023-08-03 23:22:38,551 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 265 flow [2023-08-03 23:22:38,553 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 59 transitions, 263 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:22:38,553 INFO L231 Difference]: Finished difference. Result has 70 places, 49 transitions, 155 flow [2023-08-03 23:22:38,553 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=70, PETRI_TRANSITIONS=49} [2023-08-03 23:22:38,554 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 23:22:38,554 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 49 transitions, 155 flow [2023-08-03 23:22:38,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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 23:22:38,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:38,555 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:22:38,559 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 23:22:38,755 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 23:22:38,756 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:38,756 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:38,756 INFO L85 PathProgramCache]: Analyzing trace with hash -1542809020, now seen corresponding path program 1 times [2023-08-03 23:22:38,756 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:38,756 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1417014913] [2023-08-03 23:22:38,756 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:38,757 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:38,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:38,816 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 23:22:38,816 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1417014913] [2023-08-03 23:22:38,816 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1417014913] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:38,816 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [883218678] [2023-08-03 23:22:38,817 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:38,817 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:38,817 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:38,818 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 23:22:38,845 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 23:22:38,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:38,914 INFO L262 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 23:22:38,915 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:38,938 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 23:22:38,938 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 23:22:38,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [883218678] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:22:38,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 23:22:38,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 23:22:38,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [862801920] [2023-08-03 23:22:38,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:22:38,939 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:22:38,939 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:38,940 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:22:38,941 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 23:22:38,953 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 244 [2023-08-03 23:22:38,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 49 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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 23:22:38,954 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:38,954 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 244 [2023-08-03 23:22:38,954 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:47,448 INFO L124 PetriNetUnfolderBase]: 79842/111887 cut-off events. [2023-08-03 23:22:47,448 INFO L125 PetriNetUnfolderBase]: For 5567/5567 co-relation queries the response was YES. [2023-08-03 23:22:47,721 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222060 conditions, 111887 events. 79842/111887 cut-off events. For 5567/5567 co-relation queries the response was YES. Maximal size of possible extension queue 4021. Compared 816875 event pairs, 18762 based on Foata normal form. 400/103231 useless extension candidates. Maximal degree in co-relation 105785. Up to 98424 conditions per place. [2023-08-03 23:22:48,111 INFO L140 encePairwiseOnDemand]: 240/244 looper letters, 64 selfloop transitions, 4 changer transitions 0/80 dead transitions. [2023-08-03 23:22:48,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 80 transitions, 353 flow [2023-08-03 23:22:48,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 23:22:48,112 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 23:22:48,113 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 708 transitions. [2023-08-03 23:22:48,113 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.580327868852459 [2023-08-03 23:22:48,113 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 708 transitions. [2023-08-03 23:22:48,113 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 708 transitions. [2023-08-03 23:22:48,114 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:48,114 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 708 transitions. [2023-08-03 23:22:48,116 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 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 23:22:48,118 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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 23:22:48,119 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 244.0) internal successors, (1464), 6 states have internal predecessors, (1464), 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 23:22:48,119 INFO L175 Difference]: Start difference. First operand has 70 places, 49 transitions, 155 flow. Second operand 5 states and 708 transitions. [2023-08-03 23:22:48,119 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 80 transitions, 353 flow [2023-08-03 23:22:48,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 80 transitions, 346 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:22:48,123 INFO L231 Difference]: Finished difference. Result has 71 places, 49 transitions, 165 flow [2023-08-03 23:22:48,123 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=65, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=165, PETRI_PLACES=71, PETRI_TRANSITIONS=49} [2023-08-03 23:22:48,124 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 10 predicate places. [2023-08-03 23:22:48,124 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 49 transitions, 165 flow [2023-08-03 23:22:48,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.6) internal successors, (653), 5 states have internal predecessors, (653), 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 23:22:48,125 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:48,125 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 23:22:48,137 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 23:22:48,329 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 23:22:48,330 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:48,330 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:48,330 INFO L85 PathProgramCache]: Analyzing trace with hash -1162673843, now seen corresponding path program 1 times [2023-08-03 23:22:48,330 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:48,330 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [241692205] [2023-08-03 23:22:48,331 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:48,331 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:48,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:48,426 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 23:22:48,426 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [241692205] [2023-08-03 23:22:48,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [241692205] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:22:48,426 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [661622394] [2023-08-03 23:22:48,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:48,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:22:48,428 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:22:48,429 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 23:22:48,440 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 23:22:48,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:48,536 INFO L262 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:22:48,537 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:22:48,561 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 23:22:48,562 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:22:48,576 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 23:22:48,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [661622394] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:22:48,576 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:22:48,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 23:22:48,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019248935] [2023-08-03 23:22:48,577 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:22:48,577 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:22:48,577 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:48,578 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:22:48,578 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:22:48,592 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 244 [2023-08-03 23:22:48,593 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 49 transitions, 165 flow. Second operand has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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 23:22:48,593 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:48,593 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 244 [2023-08-03 23:22:48,593 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:22:56,192 INFO L124 PetriNetUnfolderBase]: 69178/96103 cut-off events. [2023-08-03 23:22:56,192 INFO L125 PetriNetUnfolderBase]: For 7385/7385 co-relation queries the response was YES. [2023-08-03 23:22:56,448 INFO L83 FinitePrefix]: Finished finitePrefix Result has 192264 conditions, 96103 events. 69178/96103 cut-off events. For 7385/7385 co-relation queries the response was YES. Maximal size of possible extension queue 3655. Compared 679794 event pairs, 40842 based on Foata normal form. 80/88023 useless extension candidates. Maximal degree in co-relation 91709. Up to 84569 conditions per place. [2023-08-03 23:22:56,736 INFO L140 encePairwiseOnDemand]: 241/244 looper letters, 58 selfloop transitions, 3 changer transitions 0/73 dead transitions. [2023-08-03 23:22:56,736 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 73 transitions, 331 flow [2023-08-03 23:22:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:22:56,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:22:56,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 573 transitions. [2023-08-03 23:22:56,738 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5870901639344263 [2023-08-03 23:22:56,738 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 573 transitions. [2023-08-03 23:22:56,738 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 573 transitions. [2023-08-03 23:22:56,738 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:22:56,739 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 573 transitions. [2023-08-03 23:22:56,740 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 143.25) internal successors, (573), 4 states have internal predecessors, (573), 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 23:22:56,741 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:22:56,742 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:22:56,742 INFO L175 Difference]: Start difference. First operand has 71 places, 49 transitions, 165 flow. Second operand 4 states and 573 transitions. [2023-08-03 23:22:56,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 73 transitions, 331 flow [2023-08-03 23:22:56,746 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 73 transitions, 326 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 23:22:56,747 INFO L231 Difference]: Finished difference. Result has 72 places, 48 transitions, 158 flow [2023-08-03 23:22:56,747 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=69, 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=158, PETRI_PLACES=72, PETRI_TRANSITIONS=48} [2023-08-03 23:22:56,748 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 11 predicate places. [2023-08-03 23:22:56,748 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 48 transitions, 158 flow [2023-08-03 23:22:56,748 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 131.4) internal successors, (657), 5 states have internal predecessors, (657), 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 23:22:56,748 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:22:56,748 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 23:22:56,760 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 23:22:56,954 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 23:22:56,954 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 23:22:56,955 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:22:56,955 INFO L85 PathProgramCache]: Analyzing trace with hash -991973129, now seen corresponding path program 1 times [2023-08-03 23:22:56,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:22:56,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1767279697] [2023-08-03 23:22:56,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:22:56,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:22:56,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:22:57,013 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 23:22:57,014 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:22:57,014 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1767279697] [2023-08-03 23:22:57,014 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1767279697] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:22:57,014 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:22:57,014 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 23:22:57,014 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32207141] [2023-08-03 23:22:57,014 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:22:57,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 23:22:57,015 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:22:57,015 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 23:22:57,015 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-08-03 23:22:57,030 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 244 [2023-08-03 23:22:57,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 48 transitions, 158 flow. Second operand has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 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 23:22:57,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:22:57,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 244 [2023-08-03 23:22:57,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:23:01,271 INFO L124 PetriNetUnfolderBase]: 39738/55959 cut-off events. [2023-08-03 23:23:01,271 INFO L125 PetriNetUnfolderBase]: For 7429/7429 co-relation queries the response was YES. [2023-08-03 23:23:01,404 INFO L83 FinitePrefix]: Finished finitePrefix Result has 115160 conditions, 55959 events. 39738/55959 cut-off events. For 7429/7429 co-relation queries the response was YES. Maximal size of possible extension queue 2113. Compared 376290 event pairs, 5938 based on Foata normal form. 6400/57559 useless extension candidates. Maximal degree in co-relation 54757. Up to 38800 conditions per place. [2023-08-03 23:23:01,436 INFO L140 encePairwiseOnDemand]: 242/244 looper letters, 0 selfloop transitions, 0 changer transitions 78/78 dead transitions. [2023-08-03 23:23:01,436 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 78 transitions, 350 flow [2023-08-03 23:23:01,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:23:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:23:01,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 582 transitions. [2023-08-03 23:23:01,438 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5963114754098361 [2023-08-03 23:23:01,438 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 582 transitions. [2023-08-03 23:23:01,438 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 582 transitions. [2023-08-03 23:23:01,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:23:01,439 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 582 transitions. [2023-08-03 23:23:01,440 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 145.5) internal successors, (582), 4 states have internal predecessors, (582), 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 23:23:01,441 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:23:01,441 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 244.0) internal successors, (1220), 5 states have internal predecessors, (1220), 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 23:23:01,441 INFO L175 Difference]: Start difference. First operand has 72 places, 48 transitions, 158 flow. Second operand 4 states and 582 transitions. [2023-08-03 23:23:01,441 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 78 transitions, 350 flow [2023-08-03 23:23:01,740 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 78 transitions, 343 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 23:23:01,741 INFO L231 Difference]: Finished difference. Result has 70 places, 0 transitions, 0 flow [2023-08-03 23:23:01,741 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=244, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=0, PETRI_PLACES=70, PETRI_TRANSITIONS=0} [2023-08-03 23:23:01,741 INFO L281 CegarLoopForPetriNet]: 61 programPoint places, 9 predicate places. [2023-08-03 23:23:01,741 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 0 transitions, 0 flow [2023-08-03 23:23:01,742 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 132.75) internal successors, (531), 4 states have internal predecessors, (531), 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 23:23:01,742 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-03 23:23:01,742 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-03 23:23:01,742 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-03 23:23:01,742 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 23:23:01,742 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:23:01,743 INFO L307 ceAbstractionStarter]: Result for error location InUseError was SAFE,SAFE,SAFE (1/2) [2023-08-03 23:23:01,746 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 165 places, 157 transitions, 350 flow [2023-08-03 23:23:02,080 INFO L124 PetriNetUnfolderBase]: 93/1400 cut-off events. [2023-08-03 23:23:02,080 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 23:23:02,084 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1498 conditions, 1400 events. 93/1400 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9702 event pairs, 0 based on Foata normal form. 0/1235 useless extension candidates. Maximal degree in co-relation 1014. Up to 54 conditions per place. [2023-08-03 23:23:02,084 INFO L82 GeneralOperation]: Start removeDead. Operand has 165 places, 157 transitions, 350 flow [2023-08-03 23:23:02,087 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 164 places, 156 transitions, 344 flow [2023-08-03 23:23:02,087 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 23:23:02,087 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 164 places, 156 transitions, 344 flow [2023-08-03 23:23:02,087 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 164 places, 156 transitions, 344 flow [2023-08-03 23:23:02,088 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 164 places, 156 transitions, 344 flow [2023-08-03 23:23:02,203 INFO L124 PetriNetUnfolderBase]: 93/1399 cut-off events. [2023-08-03 23:23:02,204 INFO L125 PetriNetUnfolderBase]: For 25/25 co-relation queries the response was YES. [2023-08-03 23:23:02,208 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1495 conditions, 1399 events. 93/1399 cut-off events. For 25/25 co-relation queries the response was YES. Maximal size of possible extension queue 35. Compared 9705 event pairs, 0 based on Foata normal form. 0/1234 useless extension candidates. Maximal degree in co-relation 1011. Up to 54 conditions per place. [2023-08-03 23:23:02,231 INFO L119 LiptonReduction]: Number of co-enabled transitions 6776 [2023-08-03 23:23:05,386 INFO L134 LiptonReduction]: Checked pairs total: 21046 [2023-08-03 23:23:05,387 INFO L136 LiptonReduction]: Total number of compositions: 118 [2023-08-03 23:23:05,388 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 23:23:05,389 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;@ecdf795, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 23:23:05,389 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 23:23:05,391 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 23:23:05,391 INFO L124 PetriNetUnfolderBase]: 1/16 cut-off events. [2023-08-03 23:23:05,391 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 23:23:05,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:23:05,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 23:23:05,391 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:23:05,391 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:23:05,392 INFO L85 PathProgramCache]: Analyzing trace with hash 883791301, now seen corresponding path program 1 times [2023-08-03 23:23:05,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:23:05,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663062527] [2023-08-03 23:23:05,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:23:05,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:23:05,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:23:05,431 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 23:23:05,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:23:05,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663062527] [2023-08-03 23:23:05,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1663062527] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:23:05,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:23:05,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 23:23:05,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593628771] [2023-08-03 23:23:05,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:23:05,434 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:23:05,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:23:05,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:23:05,435 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:23:05,442 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-03 23:23:05,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 55 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:23:05,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:23:05,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-03 23:23:05,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:23:59,655 INFO L124 PetriNetUnfolderBase]: 468866/625046 cut-off events. [2023-08-03 23:23:59,655 INFO L125 PetriNetUnfolderBase]: For 9552/9552 co-relation queries the response was YES. [2023-08-03 23:24:00,891 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1224696 conditions, 625046 events. 468866/625046 cut-off events. For 9552/9552 co-relation queries the response was YES. Maximal size of possible extension queue 17332. Compared 4740191 event pairs, 380024 based on Foata normal form. 13020/545214 useless extension candidates. Maximal degree in co-relation 263871. Up to 587323 conditions per place. [2023-08-03 23:24:03,012 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 44 selfloop transitions, 2 changer transitions 0/59 dead transitions. [2023-08-03 23:24:03,013 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 59 transitions, 242 flow [2023-08-03 23:24:03,013 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:24:03,013 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:24:03,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 435 transitions. [2023-08-03 23:24:03,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5272727272727272 [2023-08-03 23:24:03,014 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 435 transitions. [2023-08-03 23:24:03,014 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 435 transitions. [2023-08-03 23:24:03,014 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:24:03,014 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 435 transitions. [2023-08-03 23:24:03,015 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 145.0) internal successors, (435), 3 states have internal predecessors, (435), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:03,016 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:03,017 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:03,017 INFO L175 Difference]: Start difference. First operand has 67 places, 55 transitions, 142 flow. Second operand 3 states and 435 transitions. [2023-08-03 23:24:03,017 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 59 transitions, 242 flow [2023-08-03 23:24:03,025 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 238 flow, removed 2 selfloop flow, removed 0 redundant places. [2023-08-03 23:24:03,027 INFO L231 Difference]: Finished difference. Result has 70 places, 55 transitions, 148 flow [2023-08-03 23:24:03,027 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=54, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=70, PETRI_TRANSITIONS=55} [2023-08-03 23:24:03,027 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 3 predicate places. [2023-08-03 23:24:03,027 INFO L495 AbstractCegarLoop]: Abstraction has has 70 places, 55 transitions, 148 flow [2023-08-03 23:24:03,028 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 130.66666666666666) internal successors, (392), 3 states have internal predecessors, (392), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:03,028 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:24:03,028 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:24:03,028 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-08-03 23:24:03,028 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:24:03,028 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:24:03,029 INFO L85 PathProgramCache]: Analyzing trace with hash 85020883, now seen corresponding path program 1 times [2023-08-03 23:24:03,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:24:03,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1812906281] [2023-08-03 23:24:03,029 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:24:03,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:24:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:24:03,069 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 23:24:03,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:24:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1812906281] [2023-08-03 23:24:03,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1812906281] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 23:24:03,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2022377189] [2023-08-03 23:24:03,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:24:03,070 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:24:03,070 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 23:24:03,073 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 23:24:03,074 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 23:24:03,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:24:03,148 INFO L262 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 23:24:03,149 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 23:24:03,158 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 23:24:03,158 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 23:24:03,176 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 23:24:03,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2022377189] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 23:24:03,177 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 23:24:03,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 23:24:03,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349729382] [2023-08-03 23:24:03,177 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 23:24:03,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 23:24:03,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:24:03,178 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 23:24:03,178 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 23:24:03,191 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 128 out of 275 [2023-08-03 23:24:03,192 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 55 transitions, 148 flow. Second operand has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:03,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:24:03,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 128 of 275 [2023-08-03 23:24:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:24:48,409 INFO L124 PetriNetUnfolderBase]: 389314/514526 cut-off events. [2023-08-03 23:24:48,409 INFO L125 PetriNetUnfolderBase]: For 6296/6296 co-relation queries the response was YES. [2023-08-03 23:24:50,017 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1007215 conditions, 514526 events. 389314/514526 cut-off events. For 6296/6296 co-relation queries the response was YES. Maximal size of possible extension queue 14860. Compared 3757925 event pairs, 247180 based on Foata normal form. 4/440370 useless extension candidates. Maximal degree in co-relation 263641. Up to 484009 conditions per place. [2023-08-03 23:24:52,015 INFO L140 encePairwiseOnDemand]: 271/275 looper letters, 49 selfloop transitions, 3 changer transitions 1/66 dead transitions. [2023-08-03 23:24:52,015 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 66 transitions, 276 flow [2023-08-03 23:24:52,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 23:24:52,015 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 23:24:52,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 566 transitions. [2023-08-03 23:24:52,016 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5145454545454545 [2023-08-03 23:24:52,017 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 566 transitions. [2023-08-03 23:24:52,017 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 566 transitions. [2023-08-03 23:24:52,017 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:24:52,017 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 566 transitions. [2023-08-03 23:24:52,018 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 141.5) internal successors, (566), 4 states have internal predecessors, (566), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:52,019 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:52,019 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 275.0) internal successors, (1375), 5 states have internal predecessors, (1375), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:52,019 INFO L175 Difference]: Start difference. First operand has 70 places, 55 transitions, 148 flow. Second operand 4 states and 566 transitions. [2023-08-03 23:24:52,019 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 66 transitions, 276 flow [2023-08-03 23:24:52,020 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 66 transitions, 274 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:24:52,021 INFO L231 Difference]: Finished difference. Result has 74 places, 55 transitions, 160 flow [2023-08-03 23:24:52,021 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=160, PETRI_PLACES=74, PETRI_TRANSITIONS=55} [2023-08-03 23:24:52,022 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-03 23:24:52,022 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 55 transitions, 160 flow [2023-08-03 23:24:52,022 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 130.4) internal successors, (652), 5 states have internal predecessors, (652), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:52,022 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:24:52,023 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:24:52,030 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 23:24:52,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 23:24:52,228 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:24:52,229 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:24:52,229 INFO L85 PathProgramCache]: Analyzing trace with hash 1825247266, now seen corresponding path program 1 times [2023-08-03 23:24:52,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:24:52,229 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815078715] [2023-08-03 23:24:52,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:24:52,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:24:52,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:24:52,341 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 23:24:52,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:24:52,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815078715] [2023-08-03 23:24:52,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1815078715] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:24:52,342 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:24:52,342 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2023-08-03 23:24:52,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [23217485] [2023-08-03 23:24:52,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:24:52,343 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:24:52,343 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:24:52,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:24:52,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:24:52,345 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 132 out of 275 [2023-08-03 23:24:52,345 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 55 transitions, 160 flow. Second operand has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:24:52,345 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:24:52,345 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 132 of 275 [2023-08-03 23:24:52,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:25:26,095 INFO L124 PetriNetUnfolderBase]: 335018/439559 cut-off events. [2023-08-03 23:25:26,095 INFO L125 PetriNetUnfolderBase]: For 5808/5808 co-relation queries the response was YES. [2023-08-03 23:25:27,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 863672 conditions, 439559 events. 335018/439559 cut-off events. For 5808/5808 co-relation queries the response was YES. Maximal size of possible extension queue 13216. Compared 3164157 event pairs, 55274 based on Foata normal form. 0/390375 useless extension candidates. Maximal degree in co-relation 411157. Up to 383649 conditions per place. [2023-08-03 23:25:28,581 INFO L140 encePairwiseOnDemand]: 270/275 looper letters, 67 selfloop transitions, 3 changer transitions 0/83 dead transitions. [2023-08-03 23:25:28,581 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 83 transitions, 369 flow [2023-08-03 23:25:28,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:25:28,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:25:28,583 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 467 transitions. [2023-08-03 23:25:28,583 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.566060606060606 [2023-08-03 23:25:28,583 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 467 transitions. [2023-08-03 23:25:28,583 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 467 transitions. [2023-08-03 23:25:28,583 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:25:28,583 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 467 transitions. [2023-08-03 23:25:28,584 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.66666666666666) internal successors, (467), 3 states have internal predecessors, (467), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:25:28,585 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:25:28,586 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:25:28,586 INFO L175 Difference]: Start difference. First operand has 74 places, 55 transitions, 160 flow. Second operand 3 states and 467 transitions. [2023-08-03 23:25:28,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 83 transitions, 369 flow [2023-08-03 23:25:28,588 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 83 transitions, 362 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 23:25:28,590 INFO L231 Difference]: Finished difference. Result has 74 places, 57 transitions, 174 flow [2023-08-03 23:25:28,590 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=153, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=55, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=174, PETRI_PLACES=74, PETRI_TRANSITIONS=57} [2023-08-03 23:25:28,590 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 7 predicate places. [2023-08-03 23:25:28,590 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 57 transitions, 174 flow [2023-08-03 23:25:28,591 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 135.0) internal successors, (405), 3 states have internal predecessors, (405), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:25:28,591 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:25:28,591 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:25:28,591 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 23:25:28,591 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:25:28,591 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:25:28,591 INFO L85 PathProgramCache]: Analyzing trace with hash 1734710403, now seen corresponding path program 1 times [2023-08-03 23:25:28,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:25:28,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1395876295] [2023-08-03 23:25:28,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:25:28,592 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:25:28,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 23:25:28,646 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 23:25:28,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 23:25:28,646 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1395876295] [2023-08-03 23:25:28,646 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1395876295] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 23:25:28,646 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 23:25:28,646 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 23:25:28,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788953539] [2023-08-03 23:25:28,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 23:25:28,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 23:25:28,647 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 23:25:28,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 23:25:28,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 23:25:28,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 129 out of 275 [2023-08-03 23:25:28,655 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 57 transitions, 174 flow. Second operand has 3 states, 3 states have (on average 132.66666666666666) internal successors, (398), 3 states have internal predecessors, (398), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:25:28,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 23:25:28,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 129 of 275 [2023-08-03 23:25:28,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 23:26:07,703 INFO L124 PetriNetUnfolderBase]: 326858/437175 cut-off events. [2023-08-03 23:26:07,703 INFO L125 PetriNetUnfolderBase]: For 32441/32441 co-relation queries the response was YES. [2023-08-03 23:26:08,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 906024 conditions, 437175 events. 326858/437175 cut-off events. For 32441/32441 co-relation queries the response was YES. Maximal size of possible extension queue 13239. Compared 3252895 event pairs, 274810 based on Foata normal form. 0/386567 useless extension candidates. Maximal degree in co-relation 433085. Up to 406153 conditions per place. [2023-08-03 23:26:10,161 INFO L140 encePairwiseOnDemand]: 272/275 looper letters, 53 selfloop transitions, 2 changer transitions 0/68 dead transitions. [2023-08-03 23:26:10,161 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 68 transitions, 309 flow [2023-08-03 23:26:10,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 23:26:10,161 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 23:26:10,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 440 transitions. [2023-08-03 23:26:10,162 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5333333333333333 [2023-08-03 23:26:10,162 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 440 transitions. [2023-08-03 23:26:10,162 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 440 transitions. [2023-08-03 23:26:10,163 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 23:26:10,163 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 440 transitions. [2023-08-03 23:26:10,163 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 146.66666666666666) internal successors, (440), 3 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:26:10,165 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:26:10,165 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 275.0) internal successors, (1100), 4 states have internal predecessors, (1100), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 23:26:10,165 INFO L175 Difference]: Start difference. First operand has 74 places, 57 transitions, 174 flow. Second operand 3 states and 440 transitions. [2023-08-03 23:26:10,165 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 68 transitions, 309 flow [2023-08-03 23:26:10,172 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 68 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 23:26:10,173 INFO L231 Difference]: Finished difference. Result has 76 places, 58 transitions, 183 flow [2023-08-03 23:26:10,173 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=275, PETRI_DIFFERENCE_MINUEND_FLOW=171, PETRI_DIFFERENCE_MINUEND_PLACES=73, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=183, PETRI_PLACES=76, PETRI_TRANSITIONS=58} [2023-08-03 23:26:10,174 INFO L281 CegarLoopForPetriNet]: 67 programPoint places, 9 predicate places. [2023-08-03 23:26:10,174 INFO L495 AbstractCegarLoop]: Abstraction has has 76 places, 58 transitions, 183 flow [2023-08-03 23:26:10,174 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 23:26:10,174 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 23:26:10,174 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 23:26:10,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 23:26:10,174 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting P1Err0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION, P1Err0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2023-08-03 23:26:10,175 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 23:26:10,175 INFO L85 PathProgramCache]: Analyzing trace with hash -2081989968, now seen corresponding path program 1 times [2023-08-03 23:26:10,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 23:26:10,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438740421] [2023-08-03 23:26:10,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 23:26:10,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 23:26:10,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:26:10,196 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 23:26:10,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 23:26:10,224 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 23:26:10,224 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 23:26:10,224 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2023-08-03 23:26:10,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 23:26:10,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2023-08-03 23:26:10,224 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P1Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2023-08-03 23:26:10,225 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 23:26:10,225 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2023-08-03 23:26:10,225 INFO L307 ceAbstractionStarter]: Result for error location AllErrorsAtOnce was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN (2/2) [2023-08-03 23:26:10,228 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 23:26:10,228 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 23:26:10,292 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 11:26:10 BasicIcfg [2023-08-03 23:26:10,292 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 23:26:10,292 INFO L158 Benchmark]: Toolchain (without parser) took 267527.88ms. Allocated memory was 337.6MB in the beginning and 16.0GB in the end (delta: 15.7GB). Free memory was 283.8MB in the beginning and 11.9GB in the end (delta: -11.6GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-08-03 23:26:10,293 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory is still 283.8MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 23:26:10,293 INFO L158 Benchmark]: CACSL2BoogieTranslator took 434.71ms. Allocated memory is still 337.6MB. Free memory was 283.8MB in the beginning and 260.0MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 23:26:10,293 INFO L158 Benchmark]: Boogie Procedure Inliner took 59.85ms. Allocated memory is still 337.6MB. Free memory was 260.0MB in the beginning and 257.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:26:10,293 INFO L158 Benchmark]: Boogie Preprocessor took 55.08ms. Allocated memory is still 337.6MB. Free memory was 257.2MB in the beginning and 255.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 23:26:10,293 INFO L158 Benchmark]: RCFGBuilder took 758.76ms. Allocated memory was 337.6MB in the beginning and 497.0MB in the end (delta: 159.4MB). Free memory was 255.4MB in the beginning and 437.0MB in the end (delta: -181.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.0GB. [2023-08-03 23:26:10,294 INFO L158 Benchmark]: TraceAbstraction took 266212.72ms. Allocated memory was 497.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 436.0MB in the beginning and 11.9GB in the end (delta: -11.5GB). Peak memory consumption was 4.0GB. Max. memory is 16.0GB. [2023-08-03 23:26:10,295 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 337.6MB. Free memory is still 283.8MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 434.71ms. Allocated memory is still 337.6MB. Free memory was 283.8MB in the beginning and 260.0MB in the end (delta: 23.8MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 59.85ms. Allocated memory is still 337.6MB. Free memory was 260.0MB in the beginning and 257.5MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 55.08ms. Allocated memory is still 337.6MB. Free memory was 257.2MB in the beginning and 255.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 758.76ms. Allocated memory was 337.6MB in the beginning and 497.0MB in the end (delta: 159.4MB). Free memory was 255.4MB in the beginning and 437.0MB in the end (delta: -181.6MB). Peak memory consumption was 28.9MB. Max. memory is 16.0GB. * TraceAbstraction took 266212.72ms. Allocated memory was 497.0MB in the beginning and 16.0GB in the end (delta: 15.5GB). Free memory was 436.0MB in the beginning and 11.9GB in the end (delta: -11.5GB). Peak memory consumption was 4.0GB. 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, 107 PlacesBefore, 34 PlacesAfterwards, 102 TransitionsBefore, 27 TransitionsAfterwards, 1472 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 32 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 81 TotalNumberOfCompositions, 3635 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 1657, independent: 1534, independent conditional: 0, independent unconditional: 1534, dependent: 123, dependent conditional: 0, dependent unconditional: 123, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 726, independent: 711, independent conditional: 0, independent unconditional: 711, dependent: 15, dependent conditional: 0, dependent unconditional: 15, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 1657, independent: 823, independent conditional: 0, independent unconditional: 823, dependent: 108, dependent conditional: 0, dependent unconditional: 108, unknown: 726, unknown conditional: 0, unknown unconditional: 726] , Statistics on independence cache: Total cache size (in pairs): 85, Positive cache size: 76, Positive conditional cache size: 0, Positive unconditional cache size: 76, Negative cache size: 9, Negative conditional cache size: 0, Negative unconditional cache size: 9, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.1s, 139 PlacesBefore, 61 PlacesAfterwards, 128 TransitionsBefore, 48 TransitionsAfterwards, 4136 CoEnabledTransitionPairs, 7 FixpointIterations, 37 TrivialSequentialCompositions, 38 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 10 ConcurrentYvCompositions, 2 ChoiceCompositions, 87 TotalNumberOfCompositions, 15588 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 6185, independent: 5866, independent conditional: 0, independent unconditional: 5866, dependent: 319, dependent conditional: 0, dependent unconditional: 319, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1996, independent: 1957, independent conditional: 0, independent unconditional: 1957, dependent: 39, dependent conditional: 0, dependent unconditional: 39, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 6185, independent: 3909, independent conditional: 0, independent unconditional: 3909, dependent: 280, dependent conditional: 0, dependent unconditional: 280, unknown: 1996, unknown conditional: 0, unknown unconditional: 1996] , Statistics on independence cache: Total cache size (in pairs): 400, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, Negative cache size: 21, Negative conditional cache size: 0, Negative unconditional cache size: 21, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.3s, 164 PlacesBefore, 67 PlacesAfterwards, 156 TransitionsBefore, 55 TransitionsAfterwards, 6776 CoEnabledTransitionPairs, 6 FixpointIterations, 37 TrivialSequentialCompositions, 62 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 15 ConcurrentYvCompositions, 4 ChoiceCompositions, 118 TotalNumberOfCompositions, 21046 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 7749, independent: 7433, independent conditional: 0, independent unconditional: 7433, dependent: 316, dependent conditional: 0, dependent unconditional: 316, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 3419, independent: 3358, independent conditional: 0, independent unconditional: 3358, dependent: 61, dependent conditional: 0, dependent unconditional: 61, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 7749, independent: 4075, independent conditional: 0, independent unconditional: 4075, dependent: 255, dependent conditional: 0, dependent unconditional: 255, unknown: 3419, unknown conditional: 0, unknown unconditional: 3419] , Statistics on independence cache: Total cache size (in pairs): 411, Positive cache size: 379, Positive conditional cache size: 0, Positive unconditional cache size: 379, Negative cache size: 32, Negative conditional cache size: 0, Negative unconditional cache size: 32, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - CounterExampleResult [Line: 18]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L709] 0 int __unbuffered_cnt = 0; [L711] 0 int __unbuffered_p1_EAX = 0; [L713] 0 int __unbuffered_p2_EAX = 0; [L715] 0 int __unbuffered_p2_EBX = 0; [L716] 0 _Bool main$tmp_guard0; [L717] 0 _Bool main$tmp_guard1; [L719] 0 int x = 0; [L720] 0 _Bool x$flush_delayed; [L721] 0 int x$mem_tmp; [L722] 0 _Bool x$r_buff0_thd0; [L723] 0 _Bool x$r_buff0_thd1; [L724] 0 _Bool x$r_buff0_thd2; [L725] 0 _Bool x$r_buff0_thd3; [L726] 0 _Bool x$r_buff1_thd0; [L727] 0 _Bool x$r_buff1_thd1; [L728] 0 _Bool x$r_buff1_thd2; [L729] 0 _Bool x$r_buff1_thd3; [L730] 0 _Bool x$read_delayed; [L731] 0 int *x$read_delayed_var; [L732] 0 int x$w_buff0; [L733] 0 _Bool x$w_buff0_used; [L734] 0 int x$w_buff1; [L735] 0 _Bool x$w_buff1_used; [L737] 0 int y = 0; [L739] 0 int z = 0; [L740] 0 _Bool weak$$choice0; [L741] 0 _Bool weak$$choice2; [L825] 0 pthread_t t515[2]; [L826] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0))=-3, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND TRUE 0 asdf<2 [L826] FCALL, FORK 0 pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t515[asdf], ((void *)0), P0, ((void *)0))=-2, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L826] COND FALSE 0 !(asdf<2) [L827] 0 pthread_t t516[2]; [L828] 0 int asdf=0; VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=0, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0))=-1, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=0, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=0, x$w_buff0_used=0, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L765] 3 x$w_buff1 = x$w_buff0 [L766] 3 x$w_buff0 = 2 [L767] 3 x$w_buff1_used = x$w_buff0_used [L768] 3 x$w_buff0_used = (_Bool)1 [L769] CALL 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND FALSE 3 !(!expression) [L769] RET 3 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L770] 3 x$r_buff1_thd0 = x$r_buff0_thd0 [L771] 3 x$r_buff1_thd1 = x$r_buff0_thd1 [L772] 3 x$r_buff1_thd2 = x$r_buff0_thd2 [L773] 3 x$r_buff1_thd3 = x$r_buff0_thd3 [L774] 3 x$r_buff0_thd2 = (_Bool)1 VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, arg={0:0}, arg={0:0}, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] 0 asdf++ VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L828] COND TRUE 0 asdf<2 [L828] FCALL, FORK 0 pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0)) VAL [__unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, asdf=1, asdf=2, main$tmp_guard0=0, main$tmp_guard1=0, pthread_create(&t516[asdf], ((void *)0), P1, ((void *)0))=0, t515={5:0}, t516={3:0}, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=0, x$w_buff1_used=0, x=0, y=0, z=0] [L765] 4 x$w_buff1 = x$w_buff0 [L766] 4 x$w_buff0 = 2 [L767] 4 x$w_buff1_used = x$w_buff0_used [L768] 4 x$w_buff0_used = (_Bool)1 [L769] CALL 4 __VERIFIER_assert(!(x$w_buff1_used && x$w_buff0_used)) [L18] COND TRUE 4 !expression [L18] 4 reach_error() VAL [\old(expression)=0, __unbuffered_cnt=0, __unbuffered_p1_EAX=0, __unbuffered_p2_EAX=0, __unbuffered_p2_EBX=0, arg={0:0}, expression=0, main$tmp_guard0=0, main$tmp_guard1=0, weak$$choice0=0, weak$$choice2=0, x$flush_delayed=0, x$mem_tmp=0, x$r_buff0_thd0=0, x$r_buff0_thd1=0, x$r_buff0_thd2=1, x$r_buff0_thd3=0, x$r_buff1_thd0=0, x$r_buff1_thd1=0, x$r_buff1_thd2=0, x$r_buff1_thd3=0, x$read_delayed=0, x$read_delayed_var={0:0}, x$w_buff0=2, x$w_buff0_used=1, x$w_buff1=2, x$w_buff1_used=1, x=0, y=0, z=0] - UnprovableResult [Line: 18]: Unable to prove that call to reach_error is unreachable Unable to prove that call to reach_error is unreachable Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data for thread instance sufficiency with 1 thread instances CFG has 7 procedures, 153 locations, 6 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.4s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.1s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s 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, 179 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 74.1s, OverallIterations: 7, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 68.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.3s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 322 SdHoareTripleChecker+Valid, 0.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 261 mSDsluCounter, 17 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 771 IncrementalHoareTripleChecker+Invalid, 795 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 17 mSDtfsCounter, 771 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 139 GetRequests, 115 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=165occurred 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, 0.6s InterpolantComputationTime, 202 NumberOfCodeBlocks, 202 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 226 ConstructedInterpolants, 0 QuantifiedInterpolants, 384 SizeOfPredicates, 0 NumberOfNonLiveVariables, 894 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 14 InterpolantComputations, 5 PerfectInterpolantSequences, 124/141 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, 179 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 188.5s, OverallIterations: 5, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 184.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.6s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 88 SdHoareTripleChecker+Valid, 0.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 63 mSDsluCounter, 4 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 21 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 428 IncrementalHoareTripleChecker+Invalid, 449 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 21 mSolverCounterUnsat, 4 mSDtfsCounter, 428 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=183occurred in iteration=4, InterpolantAutomatonStates: 13, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 69 NumberOfCodeBlocks, 69 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 54 ConstructedInterpolants, 0 QuantifiedInterpolants, 112 SizeOfPredicates, 0 NumberOfNonLiveVariables, 156 ConjunctsInSsa, 3 ConjunctsInUnsatCore, 6 InterpolantComputations, 3 PerfectInterpolantSequences, 12/15 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2023-08-03 23:26:10,325 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...