/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_rfi006_power.opt_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 17:47:05,232 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 17:47:05,292 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 17:47:05,296 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 17:47:05,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 17:47:05,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 17:47:05,297 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 17:47:05,318 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 17:47:05,318 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 17:47:05,321 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 17:47:05,322 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 17:47:05,322 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 17:47:05,323 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 17:47:05,323 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 17:47:05,324 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 17:47:05,324 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 17:47:05,324 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 17:47:05,324 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 17:47:05,324 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 17:47:05,324 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 17:47:05,325 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 17:47:05,325 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 17:47:05,325 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 17:47:05,325 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 17:47:05,325 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 17:47:05,326 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 17:47:05,326 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 17:47:05,326 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 17:47:05,326 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 17:47:05,326 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 17:47:05,327 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:05,327 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 17:47:05,327 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 17:47:05,328 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 17:47:05,329 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 17:47:05,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 17:47:05,506 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 17:47:05,508 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 17:47:05,509 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 17:47:05,509 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 17:47:05,510 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi006_power.opt_bound2.i [2023-08-03 17:47:06,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 17:47:06,815 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 17:47:06,815 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/pthread-wmm_rfi006_power.opt_bound2.i [2023-08-03 17:47:06,829 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9acec4e3c/6021ad79b4814b95ba3d1f0372d66c19/FLAGb10ec8716 [2023-08-03 17:47:06,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9acec4e3c/6021ad79b4814b95ba3d1f0372d66c19 [2023-08-03 17:47:06,843 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 17:47:06,844 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 17:47:06,845 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:06,845 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 17:47:06,847 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 17:47:06,847 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,848 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5018f56f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:06, skipping insertion in model container [2023-08-03 17:47:06,848 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 05:47:06" (1/1) ... [2023-08-03 17:47:06,875 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 17:47:06,975 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_rfi006_power.opt_bound2.i[993,1006] [2023-08-03 17:47:07,146 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:07,156 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 17:47:07,166 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_rfi006_power.opt_bound2.i[993,1006] [2023-08-03 17:47:07,182 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:07,184 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [268] [2023-08-03 17:47:07,220 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 17:47:07,245 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:07,245 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 17:47:07,250 INFO L206 MainTranslator]: Completed translation [2023-08-03 17:47:07,250 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07 WrapperNode [2023-08-03 17:47:07,250 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 17:47:07,251 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:07,251 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 17:47:07,252 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 17:47:07,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,286 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,316 INFO L138 Inliner]: procedures = 176, calls = 75, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 202 [2023-08-03 17:47:07,316 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 17:47:07,317 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 17:47:07,317 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 17:47:07,317 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 17:47:07,326 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,327 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,339 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,340 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,347 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,349 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,351 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,353 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,355 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 17:47:07,356 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 17:47:07,356 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 17:47:07,356 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 17:47:07,357 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (1/1) ... [2023-08-03 17:47:07,360 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 17:47:07,371 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:47:07,403 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 17:47:07,405 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 17:47:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 17:47:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 17:47:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 17:47:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 17:47:07,441 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 17:47:07,442 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 17:47:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2023-08-03 17:47:07,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2023-08-03 17:47:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2023-08-03 17:47:07,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2023-08-03 17:47:07,443 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2023-08-03 17:47:07,443 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2023-08-03 17:47:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 17:47:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 17:47:07,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 17:47:07,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 17:47:07,445 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 17:47:07,594 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 17:47:07,595 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 17:47:07,952 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 17:47:08,128 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 17:47:08,128 INFO L302 CfgBuilder]: Removed 3 assume(true) statements. [2023-08-03 17:47:08,130 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:08 BoogieIcfgContainer [2023-08-03 17:47:08,130 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 17:47:08,131 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 17:47:08,131 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 17:47:08,134 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 17:47:08,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 05:47:06" (1/3) ... [2023-08-03 17:47:08,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d72cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:08, skipping insertion in model container [2023-08-03 17:47:08,134 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 05:47:07" (2/3) ... [2023-08-03 17:47:08,134 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@300d72cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 05:47:08, skipping insertion in model container [2023-08-03 17:47:08,135 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 05:47:08" (3/3) ... [2023-08-03 17:47:08,135 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-wmm_rfi006_power.opt_bound2.i [2023-08-03 17:47:08,142 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 17:47:08,148 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 17:47:08,148 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2023-08-03 17:47:08,148 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 17:47:08,192 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:47:08,214 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,291 INFO L124 PetriNetUnfolderBase]: 30/465 cut-off events. [2023-08-03 17:47:08,291 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:08,297 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 465 events. 30/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1959 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2023-08-03 17:47:08,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,301 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,304 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:47:08,310 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,312 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,312 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 148 places, 146 transitions, 307 flow [2023-08-03 17:47:08,356 INFO L124 PetriNetUnfolderBase]: 30/465 cut-off events. [2023-08-03 17:47:08,356 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:08,357 INFO L83 FinitePrefix]: Finished finitePrefix Result has 490 conditions, 465 events. 30/465 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 15. Compared 1959 event pairs, 0 based on Foata normal form. 0/409 useless extension candidates. Maximal degree in co-relation 286. Up to 16 conditions per place. [2023-08-03 17:47:08,361 INFO L119 LiptonReduction]: Number of co-enabled transitions 2396 [2023-08-03 17:47:14,556 INFO L134 LiptonReduction]: Checked pairs total: 5888 [2023-08-03 17:47:14,556 INFO L136 LiptonReduction]: Total number of compositions: 131 [2023-08-03 17:47:14,566 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:47:14,575 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;@1dad9bb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:47:14,575 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-03 17:47:14,583 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:47:14,583 INFO L124 PetriNetUnfolderBase]: 0/19 cut-off events. [2023-08-03 17:47:14,583 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 17:47:14,583 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:14,583 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:47:14,584 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:47:14,587 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:14,587 INFO L85 PathProgramCache]: Analyzing trace with hash 1203593329, now seen corresponding path program 1 times [2023-08-03 17:47:14,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:14,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719900216] [2023-08-03 17:47:14,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:14,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:14,813 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 17:47:14,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:47:14,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719900216] [2023-08-03 17:47:14,817 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [719900216] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:47:14,817 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:47:14,817 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:47:14,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [70664483] [2023-08-03 17:47:14,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:47:14,823 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:47:14,826 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:47:14,839 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:47:14,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:47:14,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 126 out of 277 [2023-08-03 17:47:14,862 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 30 transitions, 75 flow. Second operand has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:14,862 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:47:14,862 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 126 of 277 [2023-08-03 17:47:14,863 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:47:15,249 INFO L124 PetriNetUnfolderBase]: 1189/1884 cut-off events. [2023-08-03 17:47:15,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2023-08-03 17:47:15,253 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3807 conditions, 1884 events. 1189/1884 cut-off events. For 4/4 co-relation queries the response was YES. Maximal size of possible extension queue 111. Compared 9600 event pairs, 967 based on Foata normal form. 0/1578 useless extension candidates. Maximal degree in co-relation 3790. Up to 1853 conditions per place. [2023-08-03 17:47:15,260 INFO L140 encePairwiseOnDemand]: 274/277 looper letters, 26 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2023-08-03 17:47:15,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 33 transitions, 137 flow [2023-08-03 17:47:15,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:47:15,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:47:15,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 407 transitions. [2023-08-03 17:47:15,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4897713598074609 [2023-08-03 17:47:15,276 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 407 transitions. [2023-08-03 17:47:15,276 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 407 transitions. [2023-08-03 17:47:15,279 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:47:15,280 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 407 transitions. [2023-08-03 17:47:15,284 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 135.66666666666666) internal successors, (407), 3 states have internal predecessors, (407), 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 17:47:15,288 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 17:47:15,288 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 277.0) internal successors, (1108), 4 states have internal predecessors, (1108), 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 17:47:15,289 INFO L175 Difference]: Start difference. First operand has 37 places, 30 transitions, 75 flow. Second operand 3 states and 407 transitions. [2023-08-03 17:47:15,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 33 transitions, 137 flow [2023-08-03 17:47:15,291 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 39 places, 33 transitions, 137 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 17:47:15,292 INFO L231 Difference]: Finished difference. Result has 40 places, 30 transitions, 83 flow [2023-08-03 17:47:15,294 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=277, PETRI_DIFFERENCE_MINUEND_FLOW=75, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=28, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=83, PETRI_PLACES=40, PETRI_TRANSITIONS=30} [2023-08-03 17:47:15,296 INFO L281 CegarLoopForPetriNet]: 37 programPoint places, 3 predicate places. [2023-08-03 17:47:15,296 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 30 transitions, 83 flow [2023-08-03 17:47:15,296 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 128.0) internal successors, (384), 3 states have internal predecessors, (384), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:15,296 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:15,296 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 17:47:15,297 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 17:47:15,297 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 17:47:15,298 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:15,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1197985741, now seen corresponding path program 1 times [2023-08-03 17:47:15,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:15,298 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [711974870] [2023-08-03 17:47:15,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:15,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:15,334 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 17:47:15,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 17:47:15,375 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 17:47:15,375 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 17:47:15,376 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-03 17:47:15,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2023-08-03 17:47:15,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2023-08-03 17:47:15,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-03 17:47:15,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-03 17:47:15,377 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location P2Err0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2023-08-03 17:47:15,378 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 17:47:15,379 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 17:47:15,382 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 17:47:15,382 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 17:47:15,454 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 17:47:15,462 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,753 INFO L124 PetriNetUnfolderBase]: 93/1392 cut-off events. [2023-08-03 17:47:15,753 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:47:15,769 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 1392 events. 93/1392 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9443 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1015. Up to 54 conditions per place. [2023-08-03 17:47:15,769 INFO L82 GeneralOperation]: Start removeDead. Operand has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,773 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,773 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 17:47:15,773 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,773 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 177 places, 169 transitions, 374 flow [2023-08-03 17:47:15,928 INFO L124 PetriNetUnfolderBase]: 93/1392 cut-off events. [2023-08-03 17:47:15,929 INFO L125 PetriNetUnfolderBase]: For 26/26 co-relation queries the response was YES. [2023-08-03 17:47:15,934 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1490 conditions, 1392 events. 93/1392 cut-off events. For 26/26 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 9443 event pairs, 0 based on Foata normal form. 0/1215 useless extension candidates. Maximal degree in co-relation 1015. Up to 54 conditions per place. [2023-08-03 17:47:15,951 INFO L119 LiptonReduction]: Number of co-enabled transitions 5708 [2023-08-03 17:47:22,514 INFO L134 LiptonReduction]: Checked pairs total: 16042 [2023-08-03 17:47:22,516 INFO L136 LiptonReduction]: Total number of compositions: 138 [2023-08-03 17:47:22,519 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 17:47:22,520 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;@1dad9bb7, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 17:47:22,520 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 17:47:22,522 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 17:47:22,523 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2023-08-03 17:47:22,523 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 17:47:22,523 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:47:22,523 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1] [2023-08-03 17:47:22,523 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:47:22,523 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:47:22,524 INFO L85 PathProgramCache]: Analyzing trace with hash -1916808860, now seen corresponding path program 1 times [2023-08-03 17:47:22,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:47:22,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1346136492] [2023-08-03 17:47:22,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:47:22,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:47:22,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:47:22,572 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 17:47:22,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:47:22,572 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1346136492] [2023-08-03 17:47:22,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1346136492] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:47:22,572 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 17:47:22,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 17:47:22,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080168481] [2023-08-03 17:47:22,572 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:47:22,573 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:47:22,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:47:22,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:47:22,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 17:47:22,579 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 307 [2023-08-03 17:47:22,580 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 47 transitions, 130 flow. Second operand has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:47:22,580 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:47:22,580 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 307 [2023-08-03 17:47:22,580 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:00,596 INFO L124 PetriNetUnfolderBase]: 206750/267150 cut-off events. [2023-08-03 17:48:00,596 INFO L125 PetriNetUnfolderBase]: For 4560/4560 co-relation queries the response was YES. [2023-08-03 17:48:01,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 534743 conditions, 267150 events. 206750/267150 cut-off events. For 4560/4560 co-relation queries the response was YES. Maximal size of possible extension queue 7244. Compared 1711551 event pairs, 169944 based on Foata normal form. 0/228176 useless extension candidates. Maximal degree in co-relation 153704. Up to 261960 conditions per place. [2023-08-03 17:48:02,289 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 39 selfloop transitions, 2 changer transitions 0/51 dead transitions. [2023-08-03 17:48:02,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 51 transitions, 220 flow [2023-08-03 17:48:02,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:02,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:02,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 465 transitions. [2023-08-03 17:48:02,290 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.504885993485342 [2023-08-03 17:48:02,290 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 465 transitions. [2023-08-03 17:48:02,290 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 465 transitions. [2023-08-03 17:48:02,291 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:02,291 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 465 transitions. [2023-08-03 17:48:02,292 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 155.0) internal successors, (465), 3 states have internal predecessors, (465), 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 17:48:02,293 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 17:48:02,294 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 17:48:02,294 INFO L175 Difference]: Start difference. First operand has 60 places, 47 transitions, 130 flow. Second operand 3 states and 465 transitions. [2023-08-03 17:48:02,294 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 51 transitions, 220 flow [2023-08-03 17:48:02,299 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 51 transitions, 214 flow, removed 3 selfloop flow, removed 0 redundant places. [2023-08-03 17:48:02,300 INFO L231 Difference]: Finished difference. Result has 63 places, 48 transitions, 136 flow [2023-08-03 17:48:02,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=124, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=47, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=136, PETRI_PLACES=63, PETRI_TRANSITIONS=48} [2023-08-03 17:48:02,301 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 3 predicate places. [2023-08-03 17:48:02,301 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 48 transitions, 136 flow [2023-08-03 17:48:02,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 143.0) internal successors, (429), 3 states have internal predecessors, (429), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:48:02,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:02,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:48:02,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 17:48:02,301 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:48:02,302 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:02,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1906981703, now seen corresponding path program 1 times [2023-08-03 17:48:02,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:02,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1801608722] [2023-08-03 17:48:02,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:02,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:02,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:02,336 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 17:48:02,337 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1801608722] [2023-08-03 17:48:02,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1801608722] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:48:02,337 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1371225992] [2023-08-03 17:48:02,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:02,337 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:48:02,337 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:48:02,340 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 17:48:02,341 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 17:48:02,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:02,468 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 2 conjunts are in the unsatisfiable core [2023-08-03 17:48:02,469 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:48:02,479 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 17:48:02,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:48:02,479 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1371225992] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:02,479 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:48:02,479 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [3] total 5 [2023-08-03 17:48:02,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978371977] [2023-08-03 17:48:02,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:02,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 17:48:02,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:02,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 17:48:02,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:48:02,487 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 141 out of 307 [2023-08-03 17:48:02,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 48 transitions, 136 flow. Second operand has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 17:48:02,488 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:02,488 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 141 of 307 [2023-08-03 17:48:02,488 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:48:37,294 INFO L124 PetriNetUnfolderBase]: 200318/256163 cut-off events. [2023-08-03 17:48:37,294 INFO L125 PetriNetUnfolderBase]: For 3627/3627 co-relation queries the response was YES. [2023-08-03 17:48:37,968 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514651 conditions, 256163 events. 200318/256163 cut-off events. For 3627/3627 co-relation queries the response was YES. Maximal size of possible extension queue 7224. Compared 1613968 event pairs, 160850 based on Foata normal form. 0/221638 useless extension candidates. Maximal degree in co-relation 514614. Up to 252785 conditions per place. [2023-08-03 17:48:39,049 INFO L140 encePairwiseOnDemand]: 304/307 looper letters, 45 selfloop transitions, 2 changer transitions 0/57 dead transitions. [2023-08-03 17:48:39,049 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 57 transitions, 248 flow [2023-08-03 17:48:39,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 17:48:39,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 17:48:39,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 470 transitions. [2023-08-03 17:48:39,051 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.510314875135722 [2023-08-03 17:48:39,051 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 470 transitions. [2023-08-03 17:48:39,052 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 470 transitions. [2023-08-03 17:48:39,053 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:48:39,053 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 470 transitions. [2023-08-03 17:48:39,055 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 156.66666666666666) internal successors, (470), 3 states have internal predecessors, (470), 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 17:48:39,057 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 17:48:39,057 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 307.0) internal successors, (1228), 4 states have internal predecessors, (1228), 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 17:48:39,058 INFO L175 Difference]: Start difference. First operand has 63 places, 48 transitions, 136 flow. Second operand 3 states and 470 transitions. [2023-08-03 17:48:39,058 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 65 places, 57 transitions, 248 flow [2023-08-03 17:48:39,059 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 57 transitions, 246 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 17:48:39,060 INFO L231 Difference]: Finished difference. Result has 65 places, 49 transitions, 146 flow [2023-08-03 17:48:39,060 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=46, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=146, PETRI_PLACES=65, PETRI_TRANSITIONS=49} [2023-08-03 17:48:39,062 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 5 predicate places. [2023-08-03 17:48:39,062 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 49 transitions, 146 flow [2023-08-03 17:48:39,063 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 144.0) internal successors, (432), 3 states have internal predecessors, (432), 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 17:48:39,063 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:48:39,063 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 17:48:39,073 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-03 17:48:39,275 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:48:39,275 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:48:39,276 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:48:39,276 INFO L85 PathProgramCache]: Analyzing trace with hash -1350217071, now seen corresponding path program 1 times [2023-08-03 17:48:39,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:48:39,276 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [826894261] [2023-08-03 17:48:39,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:39,277 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:48:39,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:39,353 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 17:48:39,353 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:48:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [826894261] [2023-08-03 17:48:39,354 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [826894261] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:48:39,354 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1272277572] [2023-08-03 17:48:39,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:48:39,354 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:48:39,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:48:39,355 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 17:48:39,405 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 17:48:39,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:48:39,487 INFO L262 TraceCheckSpWp]: Trace formula consists of 178 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 17:48:39,488 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:48:39,513 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 17:48:39,514 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 17:48:39,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1272277572] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 17:48:39,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 17:48:39,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 17:48:39,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [172131030] [2023-08-03 17:48:39,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 17:48:39,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:48:39,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:48:39,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:48:39,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 17:48:39,527 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 307 [2023-08-03 17:48:39,528 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 49 transitions, 146 flow. Second operand has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:48:39,528 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:48:39,528 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 307 [2023-08-03 17:48:39,528 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 17:49:13,578 INFO L124 PetriNetUnfolderBase]: 200306/255927 cut-off events. [2023-08-03 17:49:13,578 INFO L125 PetriNetUnfolderBase]: For 3939/3939 co-relation queries the response was YES. [2023-08-03 17:49:14,299 INFO L83 FinitePrefix]: Finished finitePrefix Result has 514917 conditions, 255927 events. 200306/255927 cut-off events. For 3939/3939 co-relation queries the response was YES. Maximal size of possible extension queue 7160. Compared 1597910 event pairs, 138936 based on Foata normal form. 9/222083 useless extension candidates. Maximal degree in co-relation 148250. Up to 252889 conditions per place. [2023-08-03 17:49:15,214 INFO L140 encePairwiseOnDemand]: 303/307 looper letters, 43 selfloop transitions, 4 changer transitions 0/56 dead transitions. [2023-08-03 17:49:15,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 56 transitions, 257 flow [2023-08-03 17:49:15,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 17:49:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 17:49:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 747 transitions. [2023-08-03 17:49:15,218 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4866449511400652 [2023-08-03 17:49:15,218 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 747 transitions. [2023-08-03 17:49:15,218 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 747 transitions. [2023-08-03 17:49:15,218 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 17:49:15,218 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 747 transitions. [2023-08-03 17:49:15,220 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 149.4) internal successors, (747), 5 states have internal predecessors, (747), 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 17:49:15,222 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 17:49:15,222 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 307.0) internal successors, (1842), 6 states have internal predecessors, (1842), 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 17:49:15,222 INFO L175 Difference]: Start difference. First operand has 65 places, 49 transitions, 146 flow. Second operand 5 states and 747 transitions. [2023-08-03 17:49:15,222 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 56 transitions, 257 flow [2023-08-03 17:49:15,225 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 56 transitions, 253 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 17:49:15,225 INFO L231 Difference]: Finished difference. Result has 68 places, 49 transitions, 162 flow [2023-08-03 17:49:15,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=307, PETRI_DIFFERENCE_MINUEND_FLOW=139, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=162, PETRI_PLACES=68, PETRI_TRANSITIONS=49} [2023-08-03 17:49:15,226 INFO L281 CegarLoopForPetriNet]: 60 programPoint places, 8 predicate places. [2023-08-03 17:49:15,226 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 49 transitions, 162 flow [2023-08-03 17:49:15,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 141.6) internal successors, (708), 5 states have internal predecessors, (708), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 17:49:15,227 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 17:49:15,227 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 17:49:15,245 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 17:49:15,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:15,446 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting P2Err0ASSERT_VIOLATIONERROR_FUNCTION === [P2Err0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-03 17:49:15,448 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 17:49:15,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1750586136, now seen corresponding path program 1 times [2023-08-03 17:49:15,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 17:49:15,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [445701266] [2023-08-03 17:49:15,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:15,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 17:49:15,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:15,486 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 17:49:15,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 17:49:15,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [445701266] [2023-08-03 17:49:15,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [445701266] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 17:49:15,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1326791921] [2023-08-03 17:49:15,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 17:49:15,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 17:49:15,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 17:49:15,507 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 17:49:15,508 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 17:49:15,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 17:49:15,826 INFO L262 TraceCheckSpWp]: Trace formula consists of 231 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 17:49:15,827 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 17:49:15,835 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 17:49:15,835 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-03 17:49:15,847 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 17:49:15,847 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1326791921] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-03 17:49:15,847 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-03 17:49:15,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 4 [2023-08-03 17:49:15,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [916752399] [2023-08-03 17:49:15,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-03 17:49:15,848 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 17:49:15,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 17:49:15,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 17:49:15,848 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2023-08-03 17:49:15,858 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 140 out of 307 [2023-08-03 17:49:15,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 49 transitions, 162 flow. Second operand has 5 states, 5 states have (on average 143.2) internal successors, (716), 5 states have internal predecessors, (716), 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 17:49:15,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 17:49:15,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 140 of 307 [2023-08-03 17:49:15,860 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand