/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 TOGETHER -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_power.oepc_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 18:32:59,286 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 18:32:59,339 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 18:32:59,341 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 18:32:59,341 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 18:32:59,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 18:32:59,342 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 18:32:59,356 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 18:32:59,356 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 18:32:59,357 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 18:32:59,357 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 18:32:59,357 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 18:32:59,358 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 18:32:59,358 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 18:32:59,358 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 18:32:59,358 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 18:32:59,359 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 18:32:59,359 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 18:32:59,359 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 18:32:59,359 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 18:32:59,359 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 18:32:59,362 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 18:32:59,362 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 18:32:59,362 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 18:32:59,363 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 18:32:59,364 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 18:32:59,364 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 18:32:59,364 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 18:32:59,364 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 18:32:59,364 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 18:32:59,364 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:32:59,365 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 18:32:59,365 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 18:32:59,365 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 18:32:59,365 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 18:32:59,365 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 18:32:59,365 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 18:32:59,366 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 18:32:59,366 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 18:32:59,366 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 18:32:59,366 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 18:32:59,368 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 18:32:59,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 18:32:59,530 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 18:32:59,531 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 18:32:59,532 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 18:32:59,533 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 18:32:59,534 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_power.oepc_bound2.i [2023-08-03 18:33:00,449 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 18:33:00,728 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 18:33:00,729 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_safe018_power.oepc_bound2.i [2023-08-03 18:33:00,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fa09156/2ff38a765f27431ca6d1698d7caf36fb/FLAG6ea577830 [2023-08-03 18:33:00,747 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/47fa09156/2ff38a765f27431ca6d1698d7caf36fb [2023-08-03 18:33:00,750 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 18:33:00,751 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 18:33:00,751 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 18:33:00,752 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 18:33:00,756 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 18:33:00,757 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:33:00" (1/1) ... [2023-08-03 18:33:00,757 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@67db8151 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:00, skipping insertion in model container [2023-08-03 18:33:00,757 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 06:33:00" (1/1) ... [2023-08-03 18:33:00,794 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 18:33:00,881 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_safe018_power.oepc_bound2.i[995,1008] [2023-08-03 18:33:01,044 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:33:01,057 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 18:33:01,070 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_safe018_power.oepc_bound2.i[995,1008] [2023-08-03 18:33:01,081 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:33:01,082 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 18:33:01,119 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 18:33:01,143 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:33:01,143 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 18:33:01,147 INFO L206 MainTranslator]: Completed translation [2023-08-03 18:33:01,148 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01 WrapperNode [2023-08-03 18:33:01,148 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 18:33:01,149 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 18:33:01,149 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 18:33:01,149 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 18:33:01,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,178 INFO L138 Inliner]: procedures = 176, calls = 67, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 161 [2023-08-03 18:33:01,178 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 18:33:01,179 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 18:33:01,179 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 18:33:01,179 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 18:33:01,186 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,186 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,194 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,194 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,201 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,203 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,217 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,218 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,221 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 18:33:01,221 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 18:33:01,222 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 18:33:01,222 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 18:33:01,222 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (1/1) ... [2023-08-03 18:33:01,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 18:33:01,241 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:33:01,251 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 18:33:01,257 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 18:33:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 18:33:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 18:33:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 18:33:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 18:33:01,278 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 18:33:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 18:33:01,279 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 18:33:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 18:33:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 18:33:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 18:33:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 18:33:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 18:33:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 18:33:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 18:33:01,280 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 18:33:01,280 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 18:33:01,281 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 18:33:01,413 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 18:33:01,414 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 18:33:01,703 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 18:33:01,924 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 18:33:01,924 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 18:33:01,927 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:33:01 BoogieIcfgContainer [2023-08-03 18:33:01,927 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 18:33:01,930 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 18:33:01,930 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 18:33:01,932 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 18:33:01,933 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 06:33:00" (1/3) ... [2023-08-03 18:33:01,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed29bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:33:01, skipping insertion in model container [2023-08-03 18:33:01,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 06:33:01" (2/3) ... [2023-08-03 18:33:01,934 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52ed29bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 06:33:01, skipping insertion in model container [2023-08-03 18:33:01,934 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 06:33:01" (3/3) ... [2023-08-03 18:33:01,935 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_safe018_power.oepc_bound2.i [2023-08-03 18:33:01,940 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 18:33:01,946 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 18:33:01,946 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-03 18:33:01,946 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 18:33:01,998 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:33:02,027 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 146 places, 144 transitions, 303 flow [2023-08-03 18:33:02,137 INFO L124 PetriNetUnfolderBase]: 30/461 cut-off events. [2023-08-03 18:33:02,137 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:33:02,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486 conditions, 461 events. 30/461 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1917 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 282. Up to 16 conditions per place. [2023-08-03 18:33:02,145 INFO L82 GeneralOperation]: Start removeDead. Operand has 146 places, 144 transitions, 303 flow [2023-08-03 18:33:02,151 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 135 places, 132 transitions, 279 flow [2023-08-03 18:33:02,153 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:33:02,158 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 135 places, 132 transitions, 279 flow [2023-08-03 18:33:02,159 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 135 places, 132 transitions, 279 flow [2023-08-03 18:33:02,160 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 135 places, 132 transitions, 279 flow [2023-08-03 18:33:02,192 INFO L124 PetriNetUnfolderBase]: 22/365 cut-off events. [2023-08-03 18:33:02,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:33:02,193 INFO L83 FinitePrefix]: Finished finitePrefix Result has 390 conditions, 365 events. 22/365 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 1365 event pairs, 0 based on Foata normal form. 0/329 useless extension candidates. Maximal degree in co-relation 234. Up to 16 conditions per place. [2023-08-03 18:33:02,197 INFO L119 LiptonReduction]: Number of co-enabled transitions 1696 [2023-08-03 18:33:07,432 INFO L134 LiptonReduction]: Checked pairs total: 4127 [2023-08-03 18:33:07,432 INFO L136 LiptonReduction]: Total number of compositions: 110 [2023-08-03 18:33:07,441 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:33:07,445 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;@471d40a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:33:07,445 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:33:07,449 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:33:07,449 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2023-08-03 18:33:07,449 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 18:33:07,449 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:33:07,450 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 18:33:07,450 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:33:07,453 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:33:07,453 INFO L85 PathProgramCache]: Analyzing trace with hash 1290976916, now seen corresponding path program 1 times [2023-08-03 18:33:07,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:33:07,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1204990018] [2023-08-03 18:33:07,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:07,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:33:07,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:33:07,566 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 18:33:07,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 18:33:07,603 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 18:33:07,604 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 18:33:07,605 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2023-08-03 18:33:07,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2023-08-03 18:33:07,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2023-08-03 18:33:07,606 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2023-08-03 18:33:07,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 18:33:07,607 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-03 18:33:07,611 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 18:33:07,611 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 18:33:07,646 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 18:33:07,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 173 places, 165 transitions, 366 flow [2023-08-03 18:33:07,801 INFO L124 PetriNetUnfolderBase]: 93/1380 cut-off events. [2023-08-03 18:33:07,801 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:33:07,806 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1478 conditions, 1380 events. 93/1380 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9283 event pairs, 0 based on Foata normal form. 0/1221 useless extension candidates. Maximal degree in co-relation 1003. Up to 54 conditions per place. [2023-08-03 18:33:07,806 INFO L82 GeneralOperation]: Start removeDead. Operand has 173 places, 165 transitions, 366 flow [2023-08-03 18:33:07,808 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 162 places, 153 transitions, 342 flow [2023-08-03 18:33:07,808 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 18:33:07,809 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 162 places, 153 transitions, 342 flow [2023-08-03 18:33:07,809 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 162 places, 153 transitions, 342 flow [2023-08-03 18:33:07,809 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 162 places, 153 transitions, 342 flow [2023-08-03 18:33:07,887 INFO L124 PetriNetUnfolderBase]: 66/1056 cut-off events. [2023-08-03 18:33:07,887 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 18:33:07,890 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1154 conditions, 1056 events. 66/1056 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 6493 event pairs, 0 based on Foata normal form. 0/951 useless extension candidates. Maximal degree in co-relation 787. Up to 54 conditions per place. [2023-08-03 18:33:07,900 INFO L119 LiptonReduction]: Number of co-enabled transitions 4144 [2023-08-03 18:33:14,452 INFO L134 LiptonReduction]: Checked pairs total: 12017 [2023-08-03 18:33:14,452 INFO L136 LiptonReduction]: Total number of compositions: 116 [2023-08-03 18:33:14,454 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 18:33:14,454 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;@471d40a8, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 18:33:14,454 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2023-08-03 18:33:14,458 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 18:33:14,458 INFO L124 PetriNetUnfolderBase]: 1/29 cut-off events. [2023-08-03 18:33:14,458 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 18:33:14,458 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:33:14,458 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:33:14,458 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:33:14,458 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:33:14,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1111322845, now seen corresponding path program 1 times [2023-08-03 18:33:14,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:33:14,459 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907077958] [2023-08-03 18:33:14,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:14,459 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:33:14,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:14,590 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 18:33:14,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:33:14,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907077958] [2023-08-03 18:33:14,591 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907077958] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:33:14,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:33:14,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:33:14,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581848462] [2023-08-03 18:33:14,592 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:33:14,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:33:14,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:33:14,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:33:14,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 18:33:14,628 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 281 [2023-08-03 18:33:14,632 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 45 transitions, 126 flow. Second operand has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 18:33:14,632 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:33:14,633 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 281 [2023-08-03 18:33:14,633 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:33:30,449 INFO L124 PetriNetUnfolderBase]: 90780/123748 cut-off events. [2023-08-03 18:33:30,450 INFO L125 PetriNetUnfolderBase]: For 2340/2340 co-relation queries the response was YES. [2023-08-03 18:33:30,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 244207 conditions, 123748 events. 90780/123748 cut-off events. For 2340/2340 co-relation queries the response was YES. Maximal size of possible extension queue 3593. Compared 833010 event pairs, 73086 based on Foata normal form. 3276/120166 useless extension candidates. Maximal degree in co-relation 69600. Up to 117322 conditions per place. [2023-08-03 18:33:31,112 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 35 selfloop transitions, 2 changer transitions 1/48 dead transitions. [2023-08-03 18:33:31,112 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 48 transitions, 208 flow [2023-08-03 18:33:31,113 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:33:31,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:33:31,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 469 transitions. [2023-08-03 18:33:31,121 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5563463819691578 [2023-08-03 18:33:31,121 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 469 transitions. [2023-08-03 18:33:31,121 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 469 transitions. [2023-08-03 18:33:31,122 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:33:31,124 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 469 transitions. [2023-08-03 18:33:31,127 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.33333333333334) internal successors, (469), 3 states have internal predecessors, (469), 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 18:33:31,129 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:33:31,130 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:33:31,131 INFO L175 Difference]: Start difference. First operand has 57 places, 45 transitions, 126 flow. Second operand 3 states and 469 transitions. [2023-08-03 18:33:31,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 48 transitions, 208 flow [2023-08-03 18:33:31,138 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 48 transitions, 202 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 18:33:31,139 INFO L231 Difference]: Finished difference. Result has 60 places, 44 transitions, 128 flow [2023-08-03 18:33:31,140 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=118, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=60, PETRI_TRANSITIONS=44} [2023-08-03 18:33:31,143 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 3 predicate places. [2023-08-03 18:33:31,143 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 44 transitions, 128 flow [2023-08-03 18:33:31,143 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 145.33333333333334) internal successors, (436), 3 states have internal predecessors, (436), 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 18:33:31,143 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:33:31,143 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 18:33:31,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 18:33:31,143 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:33:31,144 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:33:31,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1419399910, now seen corresponding path program 1 times [2023-08-03 18:33:31,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:33:31,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955314206] [2023-08-03 18:33:31,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:31,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:33:31,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:31,198 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 18:33:31,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:33:31,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955314206] [2023-08-03 18:33:31,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955314206] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:33:31,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [553014396] [2023-08-03 18:33:31,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:31,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:33:31,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:33:31,201 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 18:33:31,202 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 18:33:31,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:31,307 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:33:31,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:33:31,371 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 18:33:31,371 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:33:31,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [553014396] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:33:31,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:33:31,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 18:33:31,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557009071] [2023-08-03 18:33:31,372 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:33:31,372 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:33:31,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:33:31,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:33:31,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:33:31,387 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:33:31,387 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 44 transitions, 128 flow. Second operand has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 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 18:33:31,387 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:33:31,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:33:31,388 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:33:45,020 INFO L124 PetriNetUnfolderBase]: 79206/108139 cut-off events. [2023-08-03 18:33:45,021 INFO L125 PetriNetUnfolderBase]: For 1923/1923 co-relation queries the response was YES. [2023-08-03 18:33:45,268 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213367 conditions, 108139 events. 79206/108139 cut-off events. For 1923/1923 co-relation queries the response was YES. Maximal size of possible extension queue 3110. Compared 719030 event pairs, 52080 based on Foata normal form. 9/104608 useless extension candidates. Maximal degree in co-relation 76279. Up to 102437 conditions per place. [2023-08-03 18:33:45,592 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 38 selfloop transitions, 4 changer transitions 0/51 dead transitions. [2023-08-03 18:33:45,592 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 226 flow [2023-08-03 18:33:45,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:33:45,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:33:45,595 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 753 transitions. [2023-08-03 18:33:45,596 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5359430604982206 [2023-08-03 18:33:45,596 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 753 transitions. [2023-08-03 18:33:45,596 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 753 transitions. [2023-08-03 18:33:45,596 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:33:45,596 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 753 transitions. [2023-08-03 18:33:45,598 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 150.6) internal successors, (753), 5 states have internal predecessors, (753), 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 18:33:45,601 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:33:45,602 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:33:45,602 INFO L175 Difference]: Start difference. First operand has 60 places, 44 transitions, 128 flow. Second operand 5 states and 753 transitions. [2023-08-03 18:33:45,602 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 226 flow [2023-08-03 18:33:45,604 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 60 places, 51 transitions, 223 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 18:33:45,604 INFO L231 Difference]: Finished difference. Result has 62 places, 44 transitions, 142 flow [2023-08-03 18:33:45,605 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=121, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=39, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=142, PETRI_PLACES=62, PETRI_TRANSITIONS=44} [2023-08-03 18:33:45,605 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 5 predicate places. [2023-08-03 18:33:45,605 INFO L495 AbstractCegarLoop]: Abstraction has has 62 places, 44 transitions, 142 flow [2023-08-03 18:33:45,606 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 143.6) internal successors, (718), 5 states have internal predecessors, (718), 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 18:33:45,606 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:33:45,606 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:33:45,617 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 18:33:45,819 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 18:33:45,820 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:33:45,820 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:33:45,820 INFO L85 PathProgramCache]: Analyzing trace with hash 1197043442, now seen corresponding path program 1 times [2023-08-03 18:33:45,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:33:45,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1093119686] [2023-08-03 18:33:45,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:45,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:33:45,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:45,914 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 18:33:45,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:33:45,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1093119686] [2023-08-03 18:33:45,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1093119686] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:33:45,918 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [896130444] [2023-08-03 18:33:45,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:45,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:33:45,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:33:45,919 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 18:33:45,921 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 18:33:46,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:46,024 INFO L262 TraceCheckSpWp]: Trace formula consists of 210 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:33:46,025 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:33:46,030 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:33:46,030 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:33:46,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [896130444] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:33:46,030 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:33:46,030 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:33:46,030 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735736437] [2023-08-03 18:33:46,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:33:46,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:33:46,031 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:33:46,031 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:33:46,031 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:33:46,038 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 281 [2023-08-03 18:33:46,039 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 44 transitions, 142 flow. Second operand has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 18:33:46,039 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:33:46,039 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 281 [2023-08-03 18:33:46,039 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:33:58,665 INFO L124 PetriNetUnfolderBase]: 75074/102548 cut-off events. [2023-08-03 18:33:58,665 INFO L125 PetriNetUnfolderBase]: For 1726/1726 co-relation queries the response was YES. [2023-08-03 18:33:58,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201835 conditions, 102548 events. 75074/102548 cut-off events. For 1726/1726 co-relation queries the response was YES. Maximal size of possible extension queue 3099. Compared 678201 event pairs, 60724 based on Foata normal form. 0/99188 useless extension candidates. Maximal degree in co-relation 57712. Up to 96454 conditions per place. [2023-08-03 18:33:59,156 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 40 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-03 18:33:59,157 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 52 transitions, 244 flow [2023-08-03 18:33:59,157 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:33:59,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:33:59,158 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 471 transitions. [2023-08-03 18:33:59,158 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5587188612099644 [2023-08-03 18:33:59,158 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 471 transitions. [2023-08-03 18:33:59,158 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 471 transitions. [2023-08-03 18:33:59,158 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:33:59,158 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 471 transitions. [2023-08-03 18:33:59,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 157.0) internal successors, (471), 3 states have internal predecessors, (471), 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 18:33:59,161 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:33:59,161 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:33:59,161 INFO L175 Difference]: Start difference. First operand has 62 places, 44 transitions, 142 flow. Second operand 3 states and 471 transitions. [2023-08-03 18:33:59,161 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 52 transitions, 244 flow [2023-08-03 18:33:59,162 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 52 transitions, 237 flow, removed 2 selfloop flow, removed 2 redundant places. [2023-08-03 18:33:59,162 INFO L231 Difference]: Finished difference. Result has 63 places, 45 transitions, 150 flow [2023-08-03 18:33:59,163 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=135, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=150, PETRI_PLACES=63, PETRI_TRANSITIONS=45} [2023-08-03 18:33:59,163 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 6 predicate places. [2023-08-03 18:33:59,163 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 45 transitions, 150 flow [2023-08-03 18:33:59,164 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 146.33333333333334) internal successors, (439), 3 states have internal predecessors, (439), 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 18:33:59,164 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:33:59,164 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:33:59,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-03 18:33:59,368 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 18:33:59,368 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:33:59,369 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:33:59,369 INFO L85 PathProgramCache]: Analyzing trace with hash -1237699233, now seen corresponding path program 1 times [2023-08-03 18:33:59,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:33:59,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2074336091] [2023-08-03 18:33:59,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:59,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:33:59,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:59,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 18:33:59,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:33:59,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2074336091] [2023-08-03 18:33:59,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2074336091] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:33:59,438 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [437399692] [2023-08-03 18:33:59,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:33:59,438 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:33:59,438 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:33:59,439 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 18:33:59,442 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 18:33:59,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:33:59,546 INFO L262 TraceCheckSpWp]: Trace formula consists of 228 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 18:33:59,547 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:33:59,553 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-03 18:33:59,554 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:33:59,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [437399692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:33:59,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:33:59,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 18:33:59,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268766030] [2023-08-03 18:33:59,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:33:59,554 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 18:33:59,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:33:59,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 18:33:59,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:33:59,561 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 281 [2023-08-03 18:33:59,562 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 45 transitions, 150 flow. Second operand has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:33:59,562 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:33:59,562 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 281 [2023-08-03 18:33:59,562 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:11,795 INFO L124 PetriNetUnfolderBase]: 73730/99656 cut-off events. [2023-08-03 18:34:11,796 INFO L125 PetriNetUnfolderBase]: For 1032/1032 co-relation queries the response was YES. [2023-08-03 18:34:12,071 INFO L83 FinitePrefix]: Finished finitePrefix Result has 197491 conditions, 99656 events. 73730/99656 cut-off events. For 1032/1032 co-relation queries the response was YES. Maximal size of possible extension queue 3092. Compared 649640 event pairs, 57026 based on Foata normal form. 0/96188 useless extension candidates. Maximal degree in co-relation 56520. Up to 91784 conditions per place. [2023-08-03 18:34:12,338 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 47 selfloop transitions, 2 changer transitions 0/58 dead transitions. [2023-08-03 18:34:12,339 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 58 transitions, 274 flow [2023-08-03 18:34:12,339 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 18:34:12,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 18:34:12,340 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 476 transitions. [2023-08-03 18:34:12,340 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.564650059311981 [2023-08-03 18:34:12,340 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 476 transitions. [2023-08-03 18:34:12,340 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 476 transitions. [2023-08-03 18:34:12,341 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:12,341 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 476 transitions. [2023-08-03 18:34:12,341 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 158.66666666666666) internal successors, (476), 3 states have internal predecessors, (476), 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 18:34:12,343 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:34:12,343 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 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 18:34:12,343 INFO L175 Difference]: Start difference. First operand has 63 places, 45 transitions, 150 flow. Second operand 3 states and 476 transitions. [2023-08-03 18:34:12,343 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 58 transitions, 274 flow [2023-08-03 18:34:12,345 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 58 transitions, 271 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:12,345 INFO L231 Difference]: Finished difference. Result has 65 places, 46 transitions, 159 flow [2023-08-03 18:34:12,346 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=147, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=159, PETRI_PLACES=65, PETRI_TRANSITIONS=46} [2023-08-03 18:34:12,346 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 8 predicate places. [2023-08-03 18:34:12,346 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 46 transitions, 159 flow [2023-08-03 18:34:12,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 147.33333333333334) internal successors, (442), 3 states have internal predecessors, (442), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 18:34:12,347 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:12,347 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:12,351 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-03 18:34:12,550 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 18:34:12,550 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:12,551 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:12,551 INFO L85 PathProgramCache]: Analyzing trace with hash 585479664, now seen corresponding path program 1 times [2023-08-03 18:34:12,551 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:12,551 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1175995354] [2023-08-03 18:34:12,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:12,551 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:12,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:12,587 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 18:34:12,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:12,587 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1175995354] [2023-08-03 18:34:12,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1175995354] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:12,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [911143394] [2023-08-03 18:34:12,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:12,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:12,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:12,591 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 18:34:12,593 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 18:34:12,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:12,692 INFO L262 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:12,693 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:12,703 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 18:34:12,703 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:12,718 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 18:34:12,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [911143394] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:12,718 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:12,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 18:34:12,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2009199915] [2023-08-03 18:34:12,718 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:12,718 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:12,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:12,719 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:12,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:12,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:34:12,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 46 transitions, 159 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 18:34:12,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:12,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:34:12,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:22,898 INFO L124 PetriNetUnfolderBase]: 57916/76907 cut-off events. [2023-08-03 18:34:22,898 INFO L125 PetriNetUnfolderBase]: For 5790/5790 co-relation queries the response was YES. [2023-08-03 18:34:23,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 157648 conditions, 76907 events. 57916/76907 cut-off events. For 5790/5790 co-relation queries the response was YES. Maximal size of possible extension queue 2482. Compared 465999 event pairs, 36990 based on Foata normal form. 3/76442 useless extension candidates. Maximal degree in co-relation 56014. Up to 73594 conditions per place. [2023-08-03 18:34:23,316 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 40 selfloop transitions, 3 changer transitions 0/52 dead transitions. [2023-08-03 18:34:23,316 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 52 transitions, 253 flow [2023-08-03 18:34:23,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:23,317 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:23,318 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 610 transitions. [2023-08-03 18:34:23,318 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5427046263345195 [2023-08-03 18:34:23,318 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 610 transitions. [2023-08-03 18:34:23,318 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 610 transitions. [2023-08-03 18:34:23,319 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:23,319 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 610 transitions. [2023-08-03 18:34:23,320 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 152.5) internal successors, (610), 4 states have internal predecessors, (610), 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 18:34:23,321 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:23,322 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:23,322 INFO L175 Difference]: Start difference. First operand has 65 places, 46 transitions, 159 flow. Second operand 4 states and 610 transitions. [2023-08-03 18:34:23,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 52 transitions, 253 flow [2023-08-03 18:34:23,325 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 52 transitions, 251 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 18:34:23,326 INFO L231 Difference]: Finished difference. Result has 67 places, 45 transitions, 155 flow [2023-08-03 18:34:23,326 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=64, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=155, PETRI_PLACES=67, PETRI_TRANSITIONS=45} [2023-08-03 18:34:23,326 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 10 predicate places. [2023-08-03 18:34:23,326 INFO L495 AbstractCegarLoop]: Abstraction has has 67 places, 45 transitions, 155 flow [2023-08-03 18:34:23,327 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 18:34:23,327 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:23,327 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:23,331 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 18:34:23,531 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 18:34:23,531 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:23,532 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:23,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1692006560, now seen corresponding path program 1 times [2023-08-03 18:34:23,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:23,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1750836933] [2023-08-03 18:34:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:23,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:23,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:23,597 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 18:34:23,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:23,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1750836933] [2023-08-03 18:34:23,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1750836933] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:23,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1097073202] [2023-08-03 18:34:23,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:23,598 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:23,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:23,599 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 18:34:23,601 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 18:34:23,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:23,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:34:23,705 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:23,724 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 18:34:23,724 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:23,725 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1097073202] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:23,725 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:23,725 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:34:23,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575898310] [2023-08-03 18:34:23,725 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:23,725 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:23,726 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:23,726 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:23,726 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:34:23,735 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:34:23,736 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 45 transitions, 155 flow. Second operand has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 18:34:23,736 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:23,736 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:34:23,737 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:33,577 INFO L124 PetriNetUnfolderBase]: 57700/76615 cut-off events. [2023-08-03 18:34:33,577 INFO L125 PetriNetUnfolderBase]: For 5218/5218 co-relation queries the response was YES. [2023-08-03 18:34:33,759 INFO L83 FinitePrefix]: Finished finitePrefix Result has 156613 conditions, 76615 events. 57700/76615 cut-off events. For 5218/5218 co-relation queries the response was YES. Maximal size of possible extension queue 2481. Compared 463941 event pairs, 18814 based on Foata normal form. 81/76255 useless extension candidates. Maximal degree in co-relation 55649. Up to 72765 conditions per place. [2023-08-03 18:34:33,951 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 52 selfloop transitions, 4 changer transitions 0/64 dead transitions. [2023-08-03 18:34:33,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 64 transitions, 307 flow [2023-08-03 18:34:33,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:34:33,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:34:33,953 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 765 transitions. [2023-08-03 18:34:33,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5444839857651246 [2023-08-03 18:34:33,953 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 765 transitions. [2023-08-03 18:34:33,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 765 transitions. [2023-08-03 18:34:33,954 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:33,954 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 765 transitions. [2023-08-03 18:34:33,955 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 153.0) internal successors, (765), 5 states have internal predecessors, (765), 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 18:34:33,956 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:34:33,956 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:34:33,956 INFO L175 Difference]: Start difference. First operand has 67 places, 45 transitions, 155 flow. Second operand 5 states and 765 transitions. [2023-08-03 18:34:33,957 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 70 places, 64 transitions, 307 flow [2023-08-03 18:34:33,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 64 transitions, 300 flow, removed 0 selfloop flow, removed 4 redundant places. [2023-08-03 18:34:33,960 INFO L231 Difference]: Finished difference. Result has 68 places, 45 transitions, 167 flow [2023-08-03 18:34:33,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=144, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=167, PETRI_PLACES=68, PETRI_TRANSITIONS=45} [2023-08-03 18:34:33,960 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 11 predicate places. [2023-08-03 18:34:33,961 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 45 transitions, 167 flow [2023-08-03 18:34:33,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.6) internal successors, (723), 5 states have internal predecessors, (723), 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 18:34:33,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:33,961 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:33,967 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 18:34:34,167 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 18:34:34,167 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:34,168 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:34,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1097760684, now seen corresponding path program 1 times [2023-08-03 18:34:34,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:34,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1252393389] [2023-08-03 18:34:34,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:34,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:34,213 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:34:34,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1252393389] [2023-08-03 18:34:34,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1252393389] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:34,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [461173030] [2023-08-03 18:34:34,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:34,214 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:34,214 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:34,215 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 18:34:34,217 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 18:34:34,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:34,324 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:34,325 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:34,342 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:34:34,342 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:34,352 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-08-03 18:34:34,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [461173030] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:34,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:34,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:34:34,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1328117802] [2023-08-03 18:34:34,352 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:34,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:34,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:34,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:34,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:34,363 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:34:34,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 45 transitions, 167 flow. Second operand has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 18:34:34,364 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:34,364 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:34:34,364 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:42,075 INFO L124 PetriNetUnfolderBase]: 45334/59605 cut-off events. [2023-08-03 18:34:42,075 INFO L125 PetriNetUnfolderBase]: For 4510/4510 co-relation queries the response was YES. [2023-08-03 18:34:42,228 INFO L83 FinitePrefix]: Finished finitePrefix Result has 122113 conditions, 59605 events. 45334/59605 cut-off events. For 4510/4510 co-relation queries the response was YES. Maximal size of possible extension queue 2130. Compared 343034 event pairs, 29560 based on Foata normal form. 27/59299 useless extension candidates. Maximal degree in co-relation 43298. Up to 56617 conditions per place. [2023-08-03 18:34:42,380 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 48 selfloop transitions, 3 changer transitions 0/59 dead transitions. [2023-08-03 18:34:42,380 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 59 transitions, 291 flow [2023-08-03 18:34:42,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:42,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:42,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 618 transitions. [2023-08-03 18:34:42,382 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5498220640569395 [2023-08-03 18:34:42,382 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 618 transitions. [2023-08-03 18:34:42,382 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 618 transitions. [2023-08-03 18:34:42,382 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:42,382 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 618 transitions. [2023-08-03 18:34:42,383 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 154.5) internal successors, (618), 4 states have internal predecessors, (618), 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 18:34:42,384 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:42,385 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:42,385 INFO L175 Difference]: Start difference. First operand has 68 places, 45 transitions, 167 flow. Second operand 4 states and 618 transitions. [2023-08-03 18:34:42,385 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 59 transitions, 291 flow [2023-08-03 18:34:42,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 59 transitions, 286 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:34:42,397 INFO L231 Difference]: Finished difference. Result has 69 places, 44 transitions, 158 flow [2023-08-03 18:34:42,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=158, PETRI_PLACES=69, PETRI_TRANSITIONS=44} [2023-08-03 18:34:42,398 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 12 predicate places. [2023-08-03 18:34:42,398 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 44 transitions, 158 flow [2023-08-03 18:34:42,398 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.2) internal successors, (731), 5 states have internal predecessors, (731), 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 18:34:42,398 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:42,398 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:42,412 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 18:34:42,607 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:42,607 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:42,607 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:42,608 INFO L85 PathProgramCache]: Analyzing trace with hash -1693579656, now seen corresponding path program 1 times [2023-08-03 18:34:42,608 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:42,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728673577] [2023-08-03 18:34:42,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:42,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:42,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:42,647 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:34:42,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728673577] [2023-08-03 18:34:42,647 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728673577] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:42,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1549683770] [2023-08-03 18:34:42,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:42,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:42,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:42,648 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:34:42,650 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-08-03 18:34:42,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:42,760 INFO L262 TraceCheckSpWp]: Trace formula consists of 282 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 18:34:42,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:42,769 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:34:42,770 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:34:42,781 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:34:42,781 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1549683770] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:34:42,781 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:34:42,781 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 5 [2023-08-03 18:34:42,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248215498] [2023-08-03 18:34:42,781 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:34:42,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:42,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:42,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:42,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:34:42,792 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:34:42,793 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 44 transitions, 158 flow. Second operand has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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 18:34:42,793 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:42,793 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:34:42,793 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:49,680 INFO L124 PetriNetUnfolderBase]: 40906/52909 cut-off events. [2023-08-03 18:34:49,681 INFO L125 PetriNetUnfolderBase]: For 3088/3088 co-relation queries the response was YES. [2023-08-03 18:34:49,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109477 conditions, 52909 events. 40906/52909 cut-off events. For 3088/3088 co-relation queries the response was YES. Maximal size of possible extension queue 1959. Compared 290766 event pairs, 18820 based on Foata normal form. 324/53224 useless extension candidates. Maximal degree in co-relation 38798. Up to 34339 conditions per place. [2023-08-03 18:34:49,941 INFO L140 encePairwiseOnDemand]: 277/281 looper letters, 59 selfloop transitions, 4 changer transitions 0/71 dead transitions. [2023-08-03 18:34:49,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 71 transitions, 338 flow [2023-08-03 18:34:49,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 18:34:49,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 18:34:49,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 630 transitions. [2023-08-03 18:34:49,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5604982206405694 [2023-08-03 18:34:49,942 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 630 transitions. [2023-08-03 18:34:49,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 630 transitions. [2023-08-03 18:34:49,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:49,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 630 transitions. [2023-08-03 18:34:49,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 157.5) internal successors, (630), 4 states have internal predecessors, (630), 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 18:34:49,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:49,945 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 281.0) internal successors, (1405), 5 states have internal predecessors, (1405), 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 18:34:49,945 INFO L175 Difference]: Start difference. First operand has 69 places, 44 transitions, 158 flow. Second operand 4 states and 630 transitions. [2023-08-03 18:34:49,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 71 transitions, 338 flow [2023-08-03 18:34:49,947 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 71 transitions, 332 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:34:49,947 INFO L231 Difference]: Finished difference. Result has 71 places, 45 transitions, 172 flow [2023-08-03 18:34:49,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=152, PETRI_DIFFERENCE_MINUEND_PLACES=66, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=172, PETRI_PLACES=71, PETRI_TRANSITIONS=45} [2023-08-03 18:34:49,948 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-08-03 18:34:49,948 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 45 transitions, 172 flow [2023-08-03 18:34:49,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 146.4) internal successors, (732), 5 states have internal predecessors, (732), 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 18:34:49,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:49,948 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:49,953 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:50,153 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:50,153 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:50,153 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:50,153 INFO L85 PathProgramCache]: Analyzing trace with hash -178415831, now seen corresponding path program 1 times [2023-08-03 18:34:50,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:50,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167411827] [2023-08-03 18:34:50,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:50,154 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:50,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:50,198 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:34:50,198 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167411827] [2023-08-03 18:34:50,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167411827] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:34:50,198 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586918814] [2023-08-03 18:34:50,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:50,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:34:50,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:34:50,201 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:34:50,203 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-08-03 18:34:50,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:50,313 INFO L262 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 18:34:50,316 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:34:50,330 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2023-08-03 18:34:50,331 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 18:34:50,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586918814] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:50,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 18:34:50,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-03 18:34:50,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741482015] [2023-08-03 18:34:50,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:50,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:34:50,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:50,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:34:50,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 18:34:50,341 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 142 out of 281 [2023-08-03 18:34:50,342 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 45 transitions, 172 flow. Second operand has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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 18:34:50,342 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:50,342 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 142 of 281 [2023-08-03 18:34:50,342 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:34:56,305 INFO L124 PetriNetUnfolderBase]: 35506/45565 cut-off events. [2023-08-03 18:34:56,306 INFO L125 PetriNetUnfolderBase]: For 11104/11104 co-relation queries the response was YES. [2023-08-03 18:34:56,418 INFO L83 FinitePrefix]: Finished finitePrefix Result has 99776 conditions, 45565 events. 35506/45565 cut-off events. For 11104/11104 co-relation queries the response was YES. Maximal size of possible extension queue 1574. Compared 237885 event pairs, 568 based on Foata normal form. 1296/46852 useless extension candidates. Maximal degree in co-relation 35276. Up to 33480 conditions per place. [2023-08-03 18:34:56,532 INFO L140 encePairwiseOnDemand]: 278/281 looper letters, 67 selfloop transitions, 3 changer transitions 0/77 dead transitions. [2023-08-03 18:34:56,532 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 77 transitions, 372 flow [2023-08-03 18:34:56,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:34:56,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:34:56,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 779 transitions. [2023-08-03 18:34:56,534 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5544483985765124 [2023-08-03 18:34:56,534 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 779 transitions. [2023-08-03 18:34:56,534 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 779 transitions. [2023-08-03 18:34:56,535 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:34:56,535 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 779 transitions. [2023-08-03 18:34:56,536 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 155.8) internal successors, (779), 5 states have internal predecessors, (779), 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 18:34:56,537 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:34:56,537 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:34:56,537 INFO L175 Difference]: Start difference. First operand has 71 places, 45 transitions, 172 flow. Second operand 5 states and 779 transitions. [2023-08-03 18:34:56,537 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 77 transitions, 372 flow [2023-08-03 18:34:56,560 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 77 transitions, 365 flow, removed 1 selfloop flow, removed 3 redundant places. [2023-08-03 18:34:56,560 INFO L231 Difference]: Finished difference. Result has 71 places, 43 transitions, 161 flow [2023-08-03 18:34:56,560 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=155, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=161, PETRI_PLACES=71, PETRI_TRANSITIONS=43} [2023-08-03 18:34:56,561 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 14 predicate places. [2023-08-03 18:34:56,561 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 43 transitions, 161 flow [2023-08-03 18:34:56,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 145.6) internal successors, (728), 5 states have internal predecessors, (728), 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 18:34:56,561 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:34:56,561 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:34:56,568 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-08-03 18:34:56,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-08-03 18:34:56,765 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:34:56,765 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:34:56,765 INFO L85 PathProgramCache]: Analyzing trace with hash 341563446, now seen corresponding path program 1 times [2023-08-03 18:34:56,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:34:56,765 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475098668] [2023-08-03 18:34:56,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:34:56,765 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:34:56,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:34:56,883 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:34:56,883 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:34:56,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475098668] [2023-08-03 18:34:56,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475098668] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:34:56,883 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:34:56,883 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:34:56,883 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170218686] [2023-08-03 18:34:56,883 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:34:56,883 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:34:56,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:34:56,884 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:34:56,884 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:34:56,888 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 143 out of 281 [2023-08-03 18:34:56,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 43 transitions, 161 flow. Second operand has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 18:34:56,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:34:56,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 143 of 281 [2023-08-03 18:34:56,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:35:03,712 INFO L124 PetriNetUnfolderBase]: 38935/51667 cut-off events. [2023-08-03 18:35:03,712 INFO L125 PetriNetUnfolderBase]: For 14911/14911 co-relation queries the response was YES. [2023-08-03 18:35:03,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 109468 conditions, 51667 events. 38935/51667 cut-off events. For 14911/14911 co-relation queries the response was YES. Maximal size of possible extension queue 1954. Compared 302381 event pairs, 8020 based on Foata normal form. 1296/52954 useless extension candidates. Maximal degree in co-relation 38759. Up to 40258 conditions per place. [2023-08-03 18:35:03,940 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 49 selfloop transitions, 3 changer transitions 25/84 dead transitions. [2023-08-03 18:35:03,941 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 84 transitions, 418 flow [2023-08-03 18:35:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:35:03,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:35:03,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 790 transitions. [2023-08-03 18:35:03,942 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5622775800711743 [2023-08-03 18:35:03,942 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 790 transitions. [2023-08-03 18:35:03,942 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 790 transitions. [2023-08-03 18:35:03,943 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:35:03,943 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 790 transitions. [2023-08-03 18:35:03,944 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 158.0) internal successors, (790), 5 states have internal predecessors, (790), 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 18:35:03,945 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:35:03,945 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:35:03,945 INFO L175 Difference]: Start difference. First operand has 71 places, 43 transitions, 161 flow. Second operand 5 states and 790 transitions. [2023-08-03 18:35:03,945 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 84 transitions, 418 flow [2023-08-03 18:35:03,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 84 transitions, 410 flow, removed 0 selfloop flow, removed 3 redundant places. [2023-08-03 18:35:03,953 INFO L231 Difference]: Finished difference. Result has 75 places, 45 transitions, 183 flow [2023-08-03 18:35:03,953 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=156, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=183, PETRI_PLACES=75, PETRI_TRANSITIONS=45} [2023-08-03 18:35:03,953 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 18 predicate places. [2023-08-03 18:35:03,953 INFO L495 AbstractCegarLoop]: Abstraction has has 75 places, 45 transitions, 183 flow [2023-08-03 18:35:03,954 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 147.75) internal successors, (591), 4 states have internal predecessors, (591), 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 18:35:03,954 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:03,954 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:35:03,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 18:35:03,954 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:35:03,954 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:03,954 INFO L85 PathProgramCache]: Analyzing trace with hash 1998515293, now seen corresponding path program 1 times [2023-08-03 18:35:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:03,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [729814282] [2023-08-03 18:35:03,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:03,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:03,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:04,100 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:35:04,100 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:35:04,101 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [729814282] [2023-08-03 18:35:04,101 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [729814282] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:35:04,101 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:35:04,101 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 18:35:04,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162235885] [2023-08-03 18:35:04,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:35:04,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:35:04,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:35:04,101 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:35:04,101 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:35:04,112 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 281 [2023-08-03 18:35:04,114 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 45 transitions, 183 flow. Second operand has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 18:35:04,114 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:35:04,114 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 281 [2023-08-03 18:35:04,114 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:35:14,603 INFO L124 PetriNetUnfolderBase]: 58888/76669 cut-off events. [2023-08-03 18:35:14,604 INFO L125 PetriNetUnfolderBase]: For 34648/34648 co-relation queries the response was YES. [2023-08-03 18:35:14,883 INFO L83 FinitePrefix]: Finished finitePrefix Result has 181184 conditions, 76669 events. 58888/76669 cut-off events. For 34648/34648 co-relation queries the response was YES. Maximal size of possible extension queue 2885. Compared 449286 event pairs, 12265 based on Foata normal form. 1863/78451 useless extension candidates. Maximal degree in co-relation 167235. Up to 36919 conditions per place. [2023-08-03 18:35:15,038 INFO L140 encePairwiseOnDemand]: 274/281 looper letters, 75 selfloop transitions, 7 changer transitions 42/131 dead transitions. [2023-08-03 18:35:15,039 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 79 places, 131 transitions, 705 flow [2023-08-03 18:35:15,039 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-08-03 18:35:15,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2023-08-03 18:35:15,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 1097 transitions. [2023-08-03 18:35:15,041 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5577020843924758 [2023-08-03 18:35:15,041 INFO L72 ComplementDD]: Start complementDD. Operand 7 states and 1097 transitions. [2023-08-03 18:35:15,041 INFO L73 IsDeterministic]: Start isDeterministic. Operand 7 states and 1097 transitions. [2023-08-03 18:35:15,041 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:35:15,041 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 7 states and 1097 transitions. [2023-08-03 18:35:15,043 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 8 states, 7 states have (on average 156.71428571428572) internal successors, (1097), 7 states have internal predecessors, (1097), 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 18:35:15,044 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 18:35:15,045 INFO L81 ComplementDD]: Finished complementDD. Result has 8 states, 8 states have (on average 281.0) internal successors, (2248), 8 states have internal predecessors, (2248), 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 18:35:15,045 INFO L175 Difference]: Start difference. First operand has 75 places, 45 transitions, 183 flow. Second operand 7 states and 1097 transitions. [2023-08-03 18:35:15,045 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 79 places, 131 transitions, 705 flow [2023-08-03 18:35:15,436 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 131 transitions, 698 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:35:15,438 INFO L231 Difference]: Finished difference. Result has 82 places, 51 transitions, 255 flow [2023-08-03 18:35:15,438 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=178, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=45, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=38, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=255, PETRI_PLACES=82, PETRI_TRANSITIONS=51} [2023-08-03 18:35:15,438 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 25 predicate places. [2023-08-03 18:35:15,438 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 51 transitions, 255 flow [2023-08-03 18:35:15,439 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 144.0) internal successors, (720), 5 states have internal predecessors, (720), 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 18:35:15,439 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:15,439 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:35:15,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 18:35:15,439 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:35:15,439 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:15,439 INFO L85 PathProgramCache]: Analyzing trace with hash -79044079, now seen corresponding path program 1 times [2023-08-03 18:35:15,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:15,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [352310502] [2023-08-03 18:35:15,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:15,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:15,784 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2023-08-03 18:35:15,784 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:35:15,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [352310502] [2023-08-03 18:35:15,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [352310502] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:35:15,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:35:15,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 18:35:15,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472579330] [2023-08-03 18:35:15,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:35:15,785 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 18:35:15,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:35:15,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 18:35:15,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 18:35:15,791 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 146 out of 281 [2023-08-03 18:35:15,792 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 51 transitions, 255 flow. Second operand has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 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 18:35:15,792 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:35:15,792 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 146 of 281 [2023-08-03 18:35:15,792 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:35:25,871 INFO L124 PetriNetUnfolderBase]: 54258/72838 cut-off events. [2023-08-03 18:35:25,871 INFO L125 PetriNetUnfolderBase]: For 95817/95817 co-relation queries the response was YES. [2023-08-03 18:35:26,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 201228 conditions, 72838 events. 54258/72838 cut-off events. For 95817/95817 co-relation queries the response was YES. Maximal size of possible extension queue 2783. Compared 464465 event pairs, 19554 based on Foata normal form. 1080/73875 useless extension candidates. Maximal degree in co-relation 201143. Up to 59961 conditions per place. [2023-08-03 18:35:26,557 INFO L140 encePairwiseOnDemand]: 276/281 looper letters, 79 selfloop transitions, 3 changer transitions 27/116 dead transitions. [2023-08-03 18:35:26,557 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 83 places, 116 transitions, 786 flow [2023-08-03 18:35:26,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 18:35:26,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 18:35:26,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 819 transitions. [2023-08-03 18:35:26,559 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5829181494661921 [2023-08-03 18:35:26,559 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 819 transitions. [2023-08-03 18:35:26,559 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 819 transitions. [2023-08-03 18:35:26,559 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:35:26,559 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 819 transitions. [2023-08-03 18:35:26,560 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 163.8) internal successors, (819), 5 states have internal predecessors, (819), 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 18:35:26,561 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:35:26,562 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 281.0) internal successors, (1686), 6 states have internal predecessors, (1686), 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 18:35:26,562 INFO L175 Difference]: Start difference. First operand has 82 places, 51 transitions, 255 flow. Second operand 5 states and 819 transitions. [2023-08-03 18:35:26,562 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 83 places, 116 transitions, 786 flow [2023-08-03 18:35:26,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 116 transitions, 749 flow, removed 14 selfloop flow, removed 3 redundant places. [2023-08-03 18:35:26,766 INFO L231 Difference]: Finished difference. Result has 83 places, 53 transitions, 265 flow [2023-08-03 18:35:26,766 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=265, PETRI_PLACES=83, PETRI_TRANSITIONS=53} [2023-08-03 18:35:26,767 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 26 predicate places. [2023-08-03 18:35:26,767 INFO L495 AbstractCegarLoop]: Abstraction has has 83 places, 53 transitions, 265 flow [2023-08-03 18:35:26,767 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 151.25) internal successors, (605), 4 states have internal predecessors, (605), 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 18:35:26,767 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:26,767 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:35:26,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2023-08-03 18:35:26,767 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:35:26,767 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:26,767 INFO L85 PathProgramCache]: Analyzing trace with hash 770284253, now seen corresponding path program 1 times [2023-08-03 18:35:26,768 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:26,768 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55317810] [2023-08-03 18:35:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:26,768 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:26,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:27,669 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-03 18:35:27,669 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:35:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55317810] [2023-08-03 18:35:27,669 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55317810] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 18:35:27,669 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [355350512] [2023-08-03 18:35:27,669 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:27,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 18:35:27,670 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 18:35:27,673 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-03 18:35:27,675 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-08-03 18:35:27,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:27,820 INFO L262 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 51 conjunts are in the unsatisfiable core [2023-08-03 18:35:27,824 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 18:35:28,163 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-08-03 18:35:28,379 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:35:28,379 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 18:35:28,473 INFO L322 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-08-03 18:35:28,474 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 130 treesize of output 133 [2023-08-03 18:35:29,508 INFO L351 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 296 treesize of output 284 [2023-08-03 18:35:29,853 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-08-03 18:35:29,853 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [355350512] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 18:35:29,853 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 18:35:29,853 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 3, 5] total 16 [2023-08-03 18:35:29,853 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210736277] [2023-08-03 18:35:29,853 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 18:35:29,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-03 18:35:29,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:35:29,854 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-03 18:35:29,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2023-08-03 18:35:30,169 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 117 out of 281 [2023-08-03 18:35:30,170 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 53 transitions, 265 flow. Second operand has 17 states, 17 states have (on average 121.3529411764706) internal successors, (2063), 17 states have internal predecessors, (2063), 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 18:35:30,170 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:35:30,170 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 117 of 281 [2023-08-03 18:35:30,170 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 18:35:45,223 INFO L124 PetriNetUnfolderBase]: 73991/95504 cut-off events. [2023-08-03 18:35:45,223 INFO L125 PetriNetUnfolderBase]: For 140079/140079 co-relation queries the response was YES. [2023-08-03 18:35:45,683 INFO L83 FinitePrefix]: Finished finitePrefix Result has 289049 conditions, 95504 events. 73991/95504 cut-off events. For 140079/140079 co-relation queries the response was YES. Maximal size of possible extension queue 2680. Compared 550310 event pairs, 5999 based on Foata normal form. 2851/98344 useless extension candidates. Maximal degree in co-relation 288956. Up to 58404 conditions per place. [2023-08-03 18:35:45,920 INFO L140 encePairwiseOnDemand]: 261/281 looper letters, 332 selfloop transitions, 121 changer transitions 35/493 dead transitions. [2023-08-03 18:35:45,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 493 transitions, 3343 flow [2023-08-03 18:35:45,921 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2023-08-03 18:35:45,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2023-08-03 18:35:45,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 3419 transitions. [2023-08-03 18:35:45,925 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4679715302491103 [2023-08-03 18:35:45,925 INFO L72 ComplementDD]: Start complementDD. Operand 26 states and 3419 transitions. [2023-08-03 18:35:45,925 INFO L73 IsDeterministic]: Start isDeterministic. Operand 26 states and 3419 transitions. [2023-08-03 18:35:45,926 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 18:35:45,926 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 26 states and 3419 transitions. [2023-08-03 18:35:45,940 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 27 states, 26 states have (on average 131.5) internal successors, (3419), 26 states have internal predecessors, (3419), 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 18:35:45,946 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 27 states, 27 states have (on average 281.0) internal successors, (7587), 27 states have internal predecessors, (7587), 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 18:35:45,962 INFO L81 ComplementDD]: Finished complementDD. Result has 27 states, 27 states have (on average 281.0) internal successors, (7587), 27 states have internal predecessors, (7587), 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 18:35:45,962 INFO L175 Difference]: Start difference. First operand has 83 places, 53 transitions, 265 flow. Second operand 26 states and 3419 transitions. [2023-08-03 18:35:45,962 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 493 transitions, 3343 flow [2023-08-03 18:35:46,428 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 493 transitions, 3314 flow, removed 1 selfloop flow, removed 2 redundant places. [2023-08-03 18:35:46,432 INFO L231 Difference]: Finished difference. Result has 118 places, 219 transitions, 1249 flow [2023-08-03 18:35:46,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=281, PETRI_DIFFERENCE_MINUEND_FLOW=260, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=16, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=26, PETRI_FLOW=1249, PETRI_PLACES=118, PETRI_TRANSITIONS=219} [2023-08-03 18:35:46,433 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 61 predicate places. [2023-08-03 18:35:46,433 INFO L495 AbstractCegarLoop]: Abstraction has has 118 places, 219 transitions, 1249 flow [2023-08-03 18:35:46,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 121.3529411764706) internal successors, (2063), 17 states have internal predecessors, (2063), 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 18:35:46,442 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 18:35:46,443 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 18:35:46,456 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-08-03 18:35:46,647 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2023-08-03 18:35:46,650 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-03 18:35:46,650 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 18:35:46,650 INFO L85 PathProgramCache]: Analyzing trace with hash 56677819, now seen corresponding path program 1 times [2023-08-03 18:35:46,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 18:35:46,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [600409659] [2023-08-03 18:35:46,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 18:35:46,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 18:35:46,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 18:35:46,771 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-03 18:35:46,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 18:35:46,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [600409659] [2023-08-03 18:35:46,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [600409659] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 18:35:46,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 18:35:46,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 18:35:46,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [180267356] [2023-08-03 18:35:46,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 18:35:46,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 18:35:46,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 18:35:46,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 18:35:46,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 18:35:46,782 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 281 [2023-08-03 18:35:46,783 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 219 transitions, 1249 flow. Second operand has 5 states, 5 states have (on average 145.2) internal successors, (726), 5 states have internal predecessors, (726), 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 18:35:46,783 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 18:35:46,783 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 281 [2023-08-03 18:35:46,783 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand