/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/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-03 15:47:51,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-03 15:47:51,559 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-03 15:47:51,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-03 15:47:51,566 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-03 15:47:51,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-03 15:47:51,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-03 15:47:51,587 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-03 15:47:51,587 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-03 15:47:51,587 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-03 15:47:51,588 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-03 15:47:51,588 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-03 15:47:51,594 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-03 15:47:51,597 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-03 15:47:51,597 INFO L153 SettingsManager]: * Use SBE=true [2023-08-03 15:47:51,597 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-03 15:47:51,598 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-03 15:47:51,598 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-03 15:47:51,598 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-03 15:47:51,598 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-03 15:47:51,598 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-03 15:47:51,599 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-03 15:47:51,600 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-03 15:47:51,600 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-03 15:47:51,600 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-03 15:47:51,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:47:51,601 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-03 15:47:51,601 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-03 15:47:51,601 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-03 15:47:51,601 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-03 15:47:51,601 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-03 15:47:51,602 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-03 15:47:51,602 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-03 15:47:51,602 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-03 15:47:51,602 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-03 15:47:51,602 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-03 15:47:51,602 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> TOGETHER [2023-08-03 15:47:51,784 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-03 15:47:51,806 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-03 15:47:51,809 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-03 15:47:51,809 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-03 15:47:51,810 INFO L274 PluginConnector]: CDTParser initialized [2023-08-03 15:47:51,811 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i [2023-08-03 15:47:52,903 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-03 15:47:53,121 INFO L384 CDTParser]: Found 1 translation units. [2023-08-03 15:47:53,121 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i [2023-08-03 15:47:53,135 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ba18487/752fab9d4f5f4157960dbdd51225b611/FLAGb45dbbd8e [2023-08-03 15:47:53,148 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/79ba18487/752fab9d4f5f4157960dbdd51225b611 [2023-08-03 15:47:53,152 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-03 15:47:53,154 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-03 15:47:53,157 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-03 15:47:53,157 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-03 15:47:53,160 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-03 15:47:53,160 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,161 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@b37a710 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53, skipping insertion in model container [2023-08-03 15:47:53,161 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,200 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-03 15:47:53,458 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[30781,30794] [2023-08-03 15:47:53,462 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31129,31142] [2023-08-03 15:47:53,464 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31392,31405] [2023-08-03 15:47:53,470 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:47:53,480 INFO L201 MainTranslator]: Completed pre-run [2023-08-03 15:47:53,493 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:47:53,495 WARN L75 lationResultReporter]: Unsoundness Warning: unspecified type, defaulting to int C: short [256] [2023-08-03 15:47:53,504 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[30781,30794] [2023-08-03 15:47:53,506 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31129,31142] [2023-08-03 15:47:53,507 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/added_bound_to_unbounded/pthread-ext_08_rand_cas_bound2.i[31392,31405] [2023-08-03 15:47:53,508 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-03 15:47:53,525 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:47:53,525 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-03 15:47:53,530 INFO L206 MainTranslator]: Completed translation [2023-08-03 15:47:53,531 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53 WrapperNode [2023-08-03 15:47:53,531 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-03 15:47:53,531 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-03 15:47:53,531 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-03 15:47:53,532 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-03 15:47:53,536 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,545 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,562 INFO L138 Inliner]: procedures = 178, calls = 36, calls flagged for inlining = 13, calls inlined = 14, statements flattened = 148 [2023-08-03 15:47:53,562 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-03 15:47:53,563 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-03 15:47:53,563 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-03 15:47:53,563 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-03 15:47:53,569 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,570 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,576 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,579 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,580 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,581 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,583 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-03 15:47:53,584 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-03 15:47:53,584 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-03 15:47:53,584 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-03 15:47:53,585 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (1/1) ... [2023-08-03 15:47:53,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-03 15:47:53,598 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:47:53,612 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 15:47:53,614 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 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure thr1 [2023-08-03 15:47:53,636 INFO L138 BoogieDeclarations]: Found implementation of procedure thr1 [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-03 15:47:53,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-03 15:47:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-03 15:47:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-03 15:47:53,637 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-03 15:47:53,637 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-03 15:47:53,638 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 15:47:53,724 INFO L236 CfgBuilder]: Building ICFG [2023-08-03 15:47:53,726 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-03 15:47:53,964 INFO L277 CfgBuilder]: Performing block encoding [2023-08-03 15:47:54,028 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-03 15:47:54,028 INFO L302 CfgBuilder]: Removed 4 assume(true) statements. [2023-08-03 15:47:54,030 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:47:54 BoogieIcfgContainer [2023-08-03 15:47:54,030 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-03 15:47:54,032 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-03 15:47:54,032 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-03 15:47:54,035 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-03 15:47:54,036 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.08 03:47:53" (1/3) ... [2023-08-03 15:47:54,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531d7551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:47:54, skipping insertion in model container [2023-08-03 15:47:54,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.08 03:47:53" (2/3) ... [2023-08-03 15:47:54,038 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@531d7551 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.08 03:47:54, skipping insertion in model container [2023-08-03 15:47:54,038 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.08 03:47:54" (3/3) ... [2023-08-03 15:47:54,039 INFO L112 eAbstractionObserver]: Analyzing ICFG pthread-ext_08_rand_cas_bound2.i [2023-08-03 15:47:54,045 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-03 15:47:54,052 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-03 15:47:54,052 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2023-08-03 15:47:54,052 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-03 15:47:54,106 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:47:54,137 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,192 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-03 15:47:54,192 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:54,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-03 15:47:54,197 INFO L82 GeneralOperation]: Start removeDead. Operand has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,201 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,204 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:47:54,213 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,216 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,217 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 110 places, 120 transitions, 245 flow [2023-08-03 15:47:54,254 INFO L124 PetriNetUnfolderBase]: 14/130 cut-off events. [2023-08-03 15:47:54,254 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:54,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 135 conditions, 130 events. 14/130 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 187 event pairs, 0 based on Foata normal form. 0/111 useless extension candidates. Maximal degree in co-relation 102. Up to 4 conditions per place. [2023-08-03 15:47:54,257 INFO L119 LiptonReduction]: Number of co-enabled transitions 2784 [2023-08-03 15:47:57,086 INFO L134 LiptonReduction]: Checked pairs total: 2931 [2023-08-03 15:47:57,086 INFO L136 LiptonReduction]: Total number of compositions: 132 [2023-08-03 15:47:57,095 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:47:57,099 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;@2639f3ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:47:57,100 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2023-08-03 15:47:57,103 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:47:57,103 INFO L124 PetriNetUnfolderBase]: 2/12 cut-off events. [2023-08-03 15:47:57,103 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:57,103 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:47:57,104 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1] [2023-08-03 15:47:57,104 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:47:57,107 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:47:57,108 INFO L85 PathProgramCache]: Analyzing trace with hash 612035195, now seen corresponding path program 1 times [2023-08-03 15:47:57,113 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:47:57,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [857560692] [2023-08-03 15:47:57,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:47:57,114 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:47:57,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:47:57,436 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 15:47:57,437 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:47:57,437 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [857560692] [2023-08-03 15:47:57,437 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [857560692] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:47:57,437 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:47:57,438 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:47:57,438 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [923436500] [2023-08-03 15:47:57,439 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:47:57,443 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:47:57,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:47:57,461 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:47:57,461 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:47:57,482 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 98 out of 252 [2023-08-03 15:47:57,485 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 19 places, 22 transitions, 49 flow. Second operand has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 15:47:57,485 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:47:57,485 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 98 of 252 [2023-08-03 15:47:57,486 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:47:57,535 INFO L124 PetriNetUnfolderBase]: 43/92 cut-off events. [2023-08-03 15:47:57,536 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-03 15:47:57,536 INFO L83 FinitePrefix]: Finished finitePrefix Result has 189 conditions, 92 events. 43/92 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 251 event pairs, 24 based on Foata normal form. 0/56 useless extension candidates. Maximal degree in co-relation 168. Up to 79 conditions per place. [2023-08-03 15:47:57,537 INFO L140 encePairwiseOnDemand]: 247/252 looper letters, 20 selfloop transitions, 2 changer transitions 1/24 dead transitions. [2023-08-03 15:47:57,538 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 21 places, 24 transitions, 99 flow [2023-08-03 15:47:57,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:47:57,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:47:57,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 321 transitions. [2023-08-03 15:47:57,551 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4246031746031746 [2023-08-03 15:47:57,552 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 321 transitions. [2023-08-03 15:47:57,552 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 321 transitions. [2023-08-03 15:47:57,554 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:47:57,555 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 321 transitions. [2023-08-03 15:47:57,559 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 107.0) internal successors, (321), 3 states have internal predecessors, (321), 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 15:47:57,562 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 15:47:57,562 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 252.0) internal successors, (1008), 4 states have internal predecessors, (1008), 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 15:47:57,563 INFO L175 Difference]: Start difference. First operand has 19 places, 22 transitions, 49 flow. Second operand 3 states and 321 transitions. [2023-08-03 15:47:57,564 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 21 places, 24 transitions, 99 flow [2023-08-03 15:47:57,565 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 21 places, 24 transitions, 99 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:47:57,566 INFO L231 Difference]: Finished difference. Result has 22 places, 21 transitions, 57 flow [2023-08-03 15:47:57,567 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=252, PETRI_DIFFERENCE_MINUEND_FLOW=45, PETRI_DIFFERENCE_MINUEND_PLACES=19, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=20, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=18, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=57, PETRI_PLACES=22, PETRI_TRANSITIONS=21} [2023-08-03 15:47:57,569 INFO L281 CegarLoopForPetriNet]: 19 programPoint places, 3 predicate places. [2023-08-03 15:47:57,569 INFO L495 AbstractCegarLoop]: Abstraction has has 22 places, 21 transitions, 57 flow [2023-08-03 15:47:57,569 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 99.66666666666667) internal successors, (299), 3 states have internal predecessors, (299), 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 15:47:57,570 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:47:57,570 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-03 15:47:57,570 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-03 15:47:57,570 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2023-08-03 15:47:57,576 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:47:57,576 INFO L85 PathProgramCache]: Analyzing trace with hash 1793207341, now seen corresponding path program 1 times [2023-08-03 15:47:57,576 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:47:57,576 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [899262440] [2023-08-03 15:47:57,576 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:47:57,576 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:47:57,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:47:57,602 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-03 15:47:57,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-03 15:47:57,625 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-03 15:47:57,626 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-03 15:47:57,627 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 7 remaining) [2023-08-03 15:47:57,628 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 7 remaining) [2023-08-03 15:47:57,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 7 remaining) [2023-08-03 15:47:57,629 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 7 remaining) [2023-08-03 15:47:57,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 7 remaining) [2023-08-03 15:47:57,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 7 remaining) [2023-08-03 15:47:57,630 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 7 remaining) [2023-08-03 15:47:57,630 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-03 15:47:57,630 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1] [2023-08-03 15:47:57,632 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-03 15:47:57,632 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-03 15:47:57,674 INFO L144 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2023-08-03 15:47:57,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,715 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-03 15:47:57,715 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:47:57,718 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-03 15:47:57,719 INFO L82 GeneralOperation]: Start removeDead. Operand has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,720 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,721 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-03 15:47:57,721 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,721 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 188 places, 208 transitions, 428 flow [2023-08-03 15:47:57,744 INFO L124 PetriNetUnfolderBase]: 27/233 cut-off events. [2023-08-03 15:47:57,744 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2023-08-03 15:47:57,745 INFO L83 FinitePrefix]: Finished finitePrefix Result has 243 conditions, 233 events. 27/233 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 7. Compared 602 event pairs, 0 based on Foata normal form. 0/197 useless extension candidates. Maximal degree in co-relation 189. Up to 6 conditions per place. [2023-08-03 15:47:57,752 INFO L119 LiptonReduction]: Number of co-enabled transitions 20880 [2023-08-03 15:48:01,398 INFO L134 LiptonReduction]: Checked pairs total: 26938 [2023-08-03 15:48:01,398 INFO L136 LiptonReduction]: Total number of compositions: 215 [2023-08-03 15:48:01,400 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-08-03 15:48:01,400 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;@2639f3ca, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-03 15:48:01,400 INFO L358 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2023-08-03 15:48:01,403 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-03 15:48:01,403 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2023-08-03 15:48:01,403 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2023-08-03 15:48:01,403 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:01,403 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:01,403 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:01,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:01,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1494348618, now seen corresponding path program 1 times [2023-08-03 15:48:01,404 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:01,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [501972503] [2023-08-03 15:48:01,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:01,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:01,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:01,534 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 15:48:01,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:01,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [501972503] [2023-08-03 15:48:01,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [501972503] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:01,535 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:01,535 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:01,535 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344653702] [2023-08-03 15:48:01,535 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:01,535 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:01,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:01,536 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:01,536 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:01,563 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 423 [2023-08-03 15:48:01,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 54 transitions, 120 flow. Second operand has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 15:48:01,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:01,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 423 [2023-08-03 15:48:01,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:01,918 INFO L124 PetriNetUnfolderBase]: 2492/3873 cut-off events. [2023-08-03 15:48:01,918 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2023-08-03 15:48:01,921 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7687 conditions, 3873 events. 2492/3873 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 186. Compared 21224 event pairs, 1372 based on Foata normal form. 0/2728 useless extension candidates. Maximal degree in co-relation 3665. Up to 2493 conditions per place. [2023-08-03 15:48:01,950 INFO L140 encePairwiseOnDemand]: 412/423 looper letters, 86 selfloop transitions, 5 changer transitions 0/97 dead transitions. [2023-08-03 15:48:01,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 97 transitions, 398 flow [2023-08-03 15:48:01,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:48:01,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:48:01,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 770 transitions. [2023-08-03 15:48:01,953 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45508274231678486 [2023-08-03 15:48:01,953 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 770 transitions. [2023-08-03 15:48:01,953 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 770 transitions. [2023-08-03 15:48:01,953 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:01,953 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 770 transitions. [2023-08-03 15:48:01,954 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 192.5) internal successors, (770), 4 states have internal predecessors, (770), 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 15:48:01,957 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 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 15:48:01,958 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 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 15:48:01,958 INFO L175 Difference]: Start difference. First operand has 47 places, 54 transitions, 120 flow. Second operand 4 states and 770 transitions. [2023-08-03 15:48:01,958 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 97 transitions, 398 flow [2023-08-03 15:48:01,959 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 97 transitions, 396 flow, removed 1 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:01,960 INFO L231 Difference]: Finished difference. Result has 51 places, 53 transitions, 140 flow [2023-08-03 15:48:01,960 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=110, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=140, PETRI_PLACES=51, PETRI_TRANSITIONS=53} [2023-08-03 15:48:01,960 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 4 predicate places. [2023-08-03 15:48:01,961 INFO L495 AbstractCegarLoop]: Abstraction has has 51 places, 53 transitions, 140 flow [2023-08-03 15:48:01,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.0) internal successors, (676), 4 states have internal predecessors, (676), 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 15:48:01,961 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:01,961 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:01,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-03 15:48:01,961 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:01,962 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:01,962 INFO L85 PathProgramCache]: Analyzing trace with hash -734815199, now seen corresponding path program 1 times [2023-08-03 15:48:01,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:01,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2048888914] [2023-08-03 15:48:01,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:01,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:01,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:02,023 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 15:48:02,023 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:02,026 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2048888914] [2023-08-03 15:48:02,026 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2048888914] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:02,026 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:02,026 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:02,026 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533024880] [2023-08-03 15:48:02,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:02,027 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:02,027 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:02,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:02,028 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:02,043 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 423 [2023-08-03 15:48:02,044 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 51 places, 53 transitions, 140 flow. Second operand has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 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 15:48:02,044 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:02,044 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 423 [2023-08-03 15:48:02,044 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:02,342 INFO L124 PetriNetUnfolderBase]: 1814/2819 cut-off events. [2023-08-03 15:48:02,342 INFO L125 PetriNetUnfolderBase]: For 418/418 co-relation queries the response was YES. [2023-08-03 15:48:02,345 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6419 conditions, 2819 events. 1814/2819 cut-off events. For 418/418 co-relation queries the response was YES. Maximal size of possible extension queue 156. Compared 14908 event pairs, 217 based on Foata normal form. 72/2651 useless extension candidates. Maximal degree in co-relation 4931. Up to 1553 conditions per place. [2023-08-03 15:48:02,355 INFO L140 encePairwiseOnDemand]: 413/423 looper letters, 102 selfloop transitions, 10 changer transitions 0/115 dead transitions. [2023-08-03 15:48:02,355 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 115 transitions, 532 flow [2023-08-03 15:48:02,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:02,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:02,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 930 transitions. [2023-08-03 15:48:02,357 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4397163120567376 [2023-08-03 15:48:02,357 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 930 transitions. [2023-08-03 15:48:02,358 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 930 transitions. [2023-08-03 15:48:02,358 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:02,358 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 930 transitions. [2023-08-03 15:48:02,360 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.0) internal successors, (930), 5 states have internal predecessors, (930), 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 15:48:02,362 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:02,364 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:02,364 INFO L175 Difference]: Start difference. First operand has 51 places, 53 transitions, 140 flow. Second operand 5 states and 930 transitions. [2023-08-03 15:48:02,364 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 115 transitions, 532 flow [2023-08-03 15:48:02,368 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 115 transitions, 520 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:02,369 INFO L231 Difference]: Finished difference. Result has 56 places, 59 transitions, 197 flow [2023-08-03 15:48:02,369 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=134, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=53, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=197, PETRI_PLACES=56, PETRI_TRANSITIONS=59} [2023-08-03 15:48:02,371 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 9 predicate places. [2023-08-03 15:48:02,371 INFO L495 AbstractCegarLoop]: Abstraction has has 56 places, 59 transitions, 197 flow [2023-08-03 15:48:02,372 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.5) internal successors, (666), 4 states have internal predecessors, (666), 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 15:48:02,372 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:02,372 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-03 15:48:02,372 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-08-03 15:48:02,372 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:02,372 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:02,372 INFO L85 PathProgramCache]: Analyzing trace with hash 1411785267, now seen corresponding path program 1 times [2023-08-03 15:48:02,373 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:02,373 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925057542] [2023-08-03 15:48:02,373 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:02,373 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:02,439 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 15:48:02,440 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925057542] [2023-08-03 15:48:02,440 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925057542] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-03 15:48:02,440 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1967342687] [2023-08-03 15:48:02,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:02,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:02,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:02,459 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 15:48:02,460 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 15:48:02,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:02,567 INFO L262 TraceCheckSpWp]: Trace formula consists of 98 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-03 15:48:02,568 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:02,621 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 15:48:02,621 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:02,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1967342687] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:02,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-03 15:48:02,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-03 15:48:02,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175715458] [2023-08-03 15:48:02,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:02,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:02,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:02,623 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:02,623 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:02,630 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 423 [2023-08-03 15:48:02,631 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 59 transitions, 197 flow. Second operand has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 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 15:48:02,631 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:02,631 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 423 [2023-08-03 15:48:02,631 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:02,803 INFO L124 PetriNetUnfolderBase]: 992/1580 cut-off events. [2023-08-03 15:48:02,803 INFO L125 PetriNetUnfolderBase]: For 500/549 co-relation queries the response was YES. [2023-08-03 15:48:02,804 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3652 conditions, 1580 events. 992/1580 cut-off events. For 500/549 co-relation queries the response was YES. Maximal size of possible extension queue 96. Compared 7639 event pairs, 101 based on Foata normal form. 221/1662 useless extension candidates. Maximal degree in co-relation 2145. Up to 1123 conditions per place. [2023-08-03 15:48:02,809 INFO L140 encePairwiseOnDemand]: 419/423 looper letters, 95 selfloop transitions, 3 changer transitions 2/109 dead transitions. [2023-08-03 15:48:02,809 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 59 places, 109 transitions, 544 flow [2023-08-03 15:48:02,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:02,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:02,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 932 transitions. [2023-08-03 15:48:02,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.440661938534279 [2023-08-03 15:48:02,811 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 932 transitions. [2023-08-03 15:48:02,811 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 932 transitions. [2023-08-03 15:48:02,811 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:02,811 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 932 transitions. [2023-08-03 15:48:02,813 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 186.4) internal successors, (932), 5 states have internal predecessors, (932), 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 15:48:02,815 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:02,816 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:02,816 INFO L175 Difference]: Start difference. First operand has 56 places, 59 transitions, 197 flow. Second operand 5 states and 932 transitions. [2023-08-03 15:48:02,816 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 59 places, 109 transitions, 544 flow [2023-08-03 15:48:02,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 109 transitions, 543 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:02,818 INFO L231 Difference]: Finished difference. Result has 61 places, 59 transitions, 213 flow [2023-08-03 15:48:02,818 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=192, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=58, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=56, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=213, PETRI_PLACES=61, PETRI_TRANSITIONS=59} [2023-08-03 15:48:02,819 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 14 predicate places. [2023-08-03 15:48:02,819 INFO L495 AbstractCegarLoop]: Abstraction has has 61 places, 59 transitions, 213 flow [2023-08-03 15:48:02,819 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 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 15:48:02,819 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:02,819 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:02,834 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 15:48:03,024 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:03,024 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:03,025 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,025 INFO L85 PathProgramCache]: Analyzing trace with hash -812508120, now seen corresponding path program 1 times [2023-08-03 15:48:03,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1669130109] [2023-08-03 15:48:03,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-03 15:48:03,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1669130109] [2023-08-03 15:48:03,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1669130109] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:03,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:03,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:03,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208300696] [2023-08-03 15:48:03,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:03,117 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-08-03 15:48:03,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:03,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-08-03 15:48:03,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-08-03 15:48:03,155 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 164 out of 423 [2023-08-03 15:48:03,156 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 59 transitions, 213 flow. Second operand has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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 15:48:03,156 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:03,156 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 164 of 423 [2023-08-03 15:48:03,156 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:03,436 INFO L124 PetriNetUnfolderBase]: 1041/1720 cut-off events. [2023-08-03 15:48:03,436 INFO L125 PetriNetUnfolderBase]: For 1544/1586 co-relation queries the response was YES. [2023-08-03 15:48:03,439 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4703 conditions, 1720 events. 1041/1720 cut-off events. For 1544/1586 co-relation queries the response was YES. Maximal size of possible extension queue 104. Compared 9306 event pairs, 198 based on Foata normal form. 73/1646 useless extension candidates. Maximal degree in co-relation 3711. Up to 470 conditions per place. [2023-08-03 15:48:03,444 INFO L140 encePairwiseOnDemand]: 416/423 looper letters, 136 selfloop transitions, 15 changer transitions 12/172 dead transitions. [2023-08-03 15:48:03,444 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 66 places, 172 transitions, 870 flow [2023-08-03 15:48:03,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-08-03 15:48:03,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2023-08-03 15:48:03,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 1135 transitions. [2023-08-03 15:48:03,447 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44720252167060676 [2023-08-03 15:48:03,447 INFO L72 ComplementDD]: Start complementDD. Operand 6 states and 1135 transitions. [2023-08-03 15:48:03,447 INFO L73 IsDeterministic]: Start isDeterministic. Operand 6 states and 1135 transitions. [2023-08-03 15:48:03,447 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:03,447 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 6 states and 1135 transitions. [2023-08-03 15:48:03,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 7 states, 6 states have (on average 189.16666666666666) internal successors, (1135), 6 states have internal predecessors, (1135), 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 15:48:03,452 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 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 15:48:03,452 INFO L81 ComplementDD]: Finished complementDD. Result has 7 states, 7 states have (on average 423.0) internal successors, (2961), 7 states have internal predecessors, (2961), 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 15:48:03,452 INFO L175 Difference]: Start difference. First operand has 61 places, 59 transitions, 213 flow. Second operand 6 states and 1135 transitions. [2023-08-03 15:48:03,452 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 66 places, 172 transitions, 870 flow [2023-08-03 15:48:03,455 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 65 places, 172 transitions, 869 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:03,457 INFO L231 Difference]: Finished difference. Result has 69 places, 71 transitions, 344 flow [2023-08-03 15:48:03,457 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=212, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=344, PETRI_PLACES=69, PETRI_TRANSITIONS=71} [2023-08-03 15:48:03,459 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 22 predicate places. [2023-08-03 15:48:03,459 INFO L495 AbstractCegarLoop]: Abstraction has has 69 places, 71 transitions, 344 flow [2023-08-03 15:48:03,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 165.66666666666666) internal successors, (994), 6 states have internal predecessors, (994), 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 15:48:03,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:03,460 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:03,461 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-08-03 15:48:03,461 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:03,461 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,461 INFO L85 PathProgramCache]: Analyzing trace with hash 795439526, now seen corresponding path program 1 times [2023-08-03 15:48:03,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [635814032] [2023-08-03 15:48:03,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,462 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,525 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 15:48:03,525 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,527 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [635814032] [2023-08-03 15:48:03,527 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [635814032] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:03,527 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:03,527 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:03,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790388223] [2023-08-03 15:48:03,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:03,527 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:03,527 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:03,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:03,528 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:03,542 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 423 [2023-08-03 15:48:03,542 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 69 places, 71 transitions, 344 flow. Second operand has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 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 15:48:03,542 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:03,542 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 423 [2023-08-03 15:48:03,542 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:03,715 INFO L124 PetriNetUnfolderBase]: 986/1617 cut-off events. [2023-08-03 15:48:03,715 INFO L125 PetriNetUnfolderBase]: For 2774/2816 co-relation queries the response was YES. [2023-08-03 15:48:03,717 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5051 conditions, 1617 events. 986/1617 cut-off events. For 2774/2816 co-relation queries the response was YES. Maximal size of possible extension queue 84. Compared 8059 event pairs, 436 based on Foata normal form. 93/1573 useless extension candidates. Maximal degree in co-relation 2814. Up to 902 conditions per place. [2023-08-03 15:48:03,722 INFO L140 encePairwiseOnDemand]: 417/423 looper letters, 62 selfloop transitions, 3 changer transitions 26/98 dead transitions. [2023-08-03 15:48:03,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 72 places, 98 transitions, 668 flow [2023-08-03 15:48:03,722 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-03 15:48:03,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-03 15:48:03,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 733 transitions. [2023-08-03 15:48:03,724 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43321513002364065 [2023-08-03 15:48:03,724 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 733 transitions. [2023-08-03 15:48:03,724 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 733 transitions. [2023-08-03 15:48:03,724 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:03,724 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 733 transitions. [2023-08-03 15:48:03,725 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 183.25) internal successors, (733), 4 states have internal predecessors, (733), 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 15:48:03,727 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 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 15:48:03,727 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 423.0) internal successors, (2115), 5 states have internal predecessors, (2115), 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 15:48:03,727 INFO L175 Difference]: Start difference. First operand has 69 places, 71 transitions, 344 flow. Second operand 4 states and 733 transitions. [2023-08-03 15:48:03,727 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 72 places, 98 transitions, 668 flow [2023-08-03 15:48:03,730 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 98 transitions, 668 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:03,731 INFO L231 Difference]: Finished difference. Result has 73 places, 61 transitions, 292 flow [2023-08-03 15:48:03,731 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=344, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=292, PETRI_PLACES=73, PETRI_TRANSITIONS=61} [2023-08-03 15:48:03,732 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-08-03 15:48:03,732 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 61 transitions, 292 flow [2023-08-03 15:48:03,732 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 169.5) internal successors, (678), 4 states have internal predecessors, (678), 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 15:48:03,732 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:03,732 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:03,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-03 15:48:03,732 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:03,733 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,733 INFO L85 PathProgramCache]: Analyzing trace with hash -1110292132, now seen corresponding path program 1 times [2023-08-03 15:48:03,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330363316] [2023-08-03 15:48:03,733 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,733 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,759 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 15:48:03,759 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,759 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [330363316] [2023-08-03 15:48:03,759 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [330363316] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:03,759 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:03,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:03,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616626222] [2023-08-03 15:48:03,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:03,760 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:03,760 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:03,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:03,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:03,770 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 423 [2023-08-03 15:48:03,771 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 61 transitions, 292 flow. Second operand has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:03,771 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:03,771 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 423 [2023-08-03 15:48:03,771 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:03,884 INFO L124 PetriNetUnfolderBase]: 795/1327 cut-off events. [2023-08-03 15:48:03,884 INFO L125 PetriNetUnfolderBase]: For 2583/2625 co-relation queries the response was YES. [2023-08-03 15:48:03,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4255 conditions, 1327 events. 795/1327 cut-off events. For 2583/2625 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 6346 event pairs, 372 based on Foata normal form. 42/1288 useless extension candidates. Maximal degree in co-relation 2885. Up to 717 conditions per place. [2023-08-03 15:48:03,891 INFO L140 encePairwiseOnDemand]: 421/423 looper letters, 64 selfloop transitions, 1 changer transitions 0/72 dead transitions. [2023-08-03 15:48:03,891 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 74 places, 72 transitions, 498 flow [2023-08-03 15:48:03,891 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:03,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:03,892 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 554 transitions. [2023-08-03 15:48:03,892 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43656422379826637 [2023-08-03 15:48:03,892 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 554 transitions. [2023-08-03 15:48:03,892 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 554 transitions. [2023-08-03 15:48:03,892 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:03,892 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 554 transitions. [2023-08-03 15:48:03,893 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 184.66666666666666) internal successors, (554), 3 states have internal predecessors, (554), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:03,895 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:03,895 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:03,895 INFO L175 Difference]: Start difference. First operand has 73 places, 61 transitions, 292 flow. Second operand 3 states and 554 transitions. [2023-08-03 15:48:03,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 74 places, 72 transitions, 498 flow [2023-08-03 15:48:03,898 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 72 transitions, 482 flow, removed 2 selfloop flow, removed 4 redundant places. [2023-08-03 15:48:03,899 INFO L231 Difference]: Finished difference. Result has 71 places, 61 transitions, 281 flow [2023-08-03 15:48:03,899 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=68, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=281, PETRI_PLACES=71, PETRI_TRANSITIONS=61} [2023-08-03 15:48:03,899 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 24 predicate places. [2023-08-03 15:48:03,899 INFO L495 AbstractCegarLoop]: Abstraction has has 71 places, 61 transitions, 281 flow [2023-08-03 15:48:03,900 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 171.66666666666666) internal successors, (515), 3 states have internal predecessors, (515), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-03 15:48:03,900 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:03,900 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:03,900 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-08-03 15:48:03,900 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:03,900 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:03,900 INFO L85 PathProgramCache]: Analyzing trace with hash -1168680498, now seen corresponding path program 1 times [2023-08-03 15:48:03,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:03,900 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272853993] [2023-08-03 15:48:03,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,900 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:03,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,912 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:03,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272853993] [2023-08-03 15:48:03,913 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2023-08-03 15:48:03,913 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [887703168] [2023-08-03 15:48:03,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:03,913 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:03,913 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:03,914 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 15:48:03,916 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 15:48:03,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:03,994 INFO L262 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 3 conjunts are in the unsatisfiable core [2023-08-03 15:48:03,995 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:04,010 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 15:48:04,011 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:04,011 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [887703168] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:04,011 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:04,011 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:04,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [603967164] [2023-08-03 15:48:04,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:04,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-03 15:48:04,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:04,011 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-03 15:48:04,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-08-03 15:48:04,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 163 out of 423 [2023-08-03 15:48:04,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 61 transitions, 281 flow. Second operand has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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 15:48:04,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:04,024 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 163 of 423 [2023-08-03 15:48:04,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:04,143 INFO L124 PetriNetUnfolderBase]: 671/1110 cut-off events. [2023-08-03 15:48:04,143 INFO L125 PetriNetUnfolderBase]: For 2012/2030 co-relation queries the response was YES. [2023-08-03 15:48:04,145 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3529 conditions, 1110 events. 671/1110 cut-off events. For 2012/2030 co-relation queries the response was YES. Maximal size of possible extension queue 48. Compared 4838 event pairs, 204 based on Foata normal form. 48/1104 useless extension candidates. Maximal degree in co-relation 2713. Up to 865 conditions per place. [2023-08-03 15:48:04,148 INFO L140 encePairwiseOnDemand]: 418/423 looper letters, 64 selfloop transitions, 3 changer transitions 16/86 dead transitions. [2023-08-03 15:48:04,148 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 86 transitions, 604 flow [2023-08-03 15:48:04,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:04,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:04,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 879 transitions. [2023-08-03 15:48:04,150 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4156028368794326 [2023-08-03 15:48:04,150 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 879 transitions. [2023-08-03 15:48:04,150 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 879 transitions. [2023-08-03 15:48:04,150 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:04,150 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 879 transitions. [2023-08-03 15:48:04,152 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.8) internal successors, (879), 5 states have internal predecessors, (879), 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 15:48:04,153 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:04,154 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:04,154 INFO L175 Difference]: Start difference. First operand has 71 places, 61 transitions, 281 flow. Second operand 5 states and 879 transitions. [2023-08-03 15:48:04,154 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 86 transitions, 604 flow [2023-08-03 15:48:04,156 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 75 places, 86 transitions, 604 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:04,157 INFO L231 Difference]: Finished difference. Result has 78 places, 60 transitions, 291 flow [2023-08-03 15:48:04,157 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=281, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=61, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=291, PETRI_PLACES=78, PETRI_TRANSITIONS=60} [2023-08-03 15:48:04,157 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 31 predicate places. [2023-08-03 15:48:04,157 INFO L495 AbstractCegarLoop]: Abstraction has has 78 places, 60 transitions, 291 flow [2023-08-03 15:48:04,158 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 166.75) internal successors, (667), 4 states have internal predecessors, (667), 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 15:48:04,158 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:04,158 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:04,173 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2023-08-03 15:48:04,363 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,SelfDestructingSolverStorable8 [2023-08-03 15:48:04,363 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting thr1Err1ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:04,363 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:04,363 INFO L85 PathProgramCache]: Analyzing trace with hash 2035765077, now seen corresponding path program 1 times [2023-08-03 15:48:04,363 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:04,363 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643384451] [2023-08-03 15:48:04,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:04,364 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:04,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:04,390 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 15:48:04,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:04,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643384451] [2023-08-03 15:48:04,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643384451] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:04,390 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:04,390 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-03 15:48:04,390 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1932071399] [2023-08-03 15:48:04,391 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:04,391 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:04,391 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:04,391 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:04,391 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:04,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 168 out of 423 [2023-08-03 15:48:04,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 60 transitions, 291 flow. Second operand has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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 15:48:04,399 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:04,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 168 of 423 [2023-08-03 15:48:04,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:04,487 INFO L124 PetriNetUnfolderBase]: 520/873 cut-off events. [2023-08-03 15:48:04,487 INFO L125 PetriNetUnfolderBase]: For 1475/1487 co-relation queries the response was YES. [2023-08-03 15:48:04,488 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2800 conditions, 873 events. 520/873 cut-off events. For 1475/1487 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 3603 event pairs, 267 based on Foata normal form. 12/845 useless extension candidates. Maximal degree in co-relation 1980. Up to 625 conditions per place. [2023-08-03 15:48:04,491 INFO L140 encePairwiseOnDemand]: 421/423 looper letters, 57 selfloop transitions, 1 changer transitions 0/64 dead transitions. [2023-08-03 15:48:04,491 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 64 transitions, 426 flow [2023-08-03 15:48:04,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:04,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:04,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 550 transitions. [2023-08-03 15:48:04,492 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43341213553979513 [2023-08-03 15:48:04,492 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 550 transitions. [2023-08-03 15:48:04,492 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 550 transitions. [2023-08-03 15:48:04,493 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:04,493 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 550 transitions. [2023-08-03 15:48:04,494 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 183.33333333333334) internal successors, (550), 3 states have internal predecessors, (550), 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 15:48:04,495 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:04,495 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:04,495 INFO L175 Difference]: Start difference. First operand has 78 places, 60 transitions, 291 flow. Second operand 3 states and 550 transitions. [2023-08-03 15:48:04,495 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 77 places, 64 transitions, 426 flow [2023-08-03 15:48:04,497 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 72 places, 64 transitions, 412 flow, removed 2 selfloop flow, removed 5 redundant places. [2023-08-03 15:48:04,498 INFO L231 Difference]: Finished difference. Result has 73 places, 60 transitions, 282 flow [2023-08-03 15:48:04,498 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=70, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=282, PETRI_PLACES=73, PETRI_TRANSITIONS=60} [2023-08-03 15:48:04,498 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 26 predicate places. [2023-08-03 15:48:04,498 INFO L495 AbstractCegarLoop]: Abstraction has has 73 places, 60 transitions, 282 flow [2023-08-03 15:48:04,498 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 172.66666666666666) internal successors, (518), 3 states have internal predecessors, (518), 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 15:48:04,498 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:04,498 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:04,499 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-08-03 15:48:04,499 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:04,499 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:04,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1757628240, now seen corresponding path program 1 times [2023-08-03 15:48:04,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:04,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775621843] [2023-08-03 15:48:04,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:04,499 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:04,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:04,747 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:04,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:04,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775621843] [2023-08-03 15:48:04,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775621843] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:04,747 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:04,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 15:48:04,747 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828942549] [2023-08-03 15:48:04,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:04,748 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:48:04,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:04,748 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:48:04,748 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:48:04,824 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 423 [2023-08-03 15:48:04,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 73 places, 60 transitions, 282 flow. Second operand has 8 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 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 15:48:04,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:04,825 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 423 [2023-08-03 15:48:04,825 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:05,025 INFO L124 PetriNetUnfolderBase]: 723/1183 cut-off events. [2023-08-03 15:48:05,025 INFO L125 PetriNetUnfolderBase]: For 2003/2018 co-relation queries the response was YES. [2023-08-03 15:48:05,027 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3715 conditions, 1183 events. 723/1183 cut-off events. For 2003/2018 co-relation queries the response was YES. Maximal size of possible extension queue 47. Compared 5272 event pairs, 142 based on Foata normal form. 57/1201 useless extension candidates. Maximal degree in co-relation 3022. Up to 443 conditions per place. [2023-08-03 15:48:05,030 INFO L140 encePairwiseOnDemand]: 410/423 looper letters, 90 selfloop transitions, 27 changer transitions 2/122 dead transitions. [2023-08-03 15:48:05,030 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 122 transitions, 815 flow [2023-08-03 15:48:05,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:48:05,030 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:48:05,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1482 transitions. [2023-08-03 15:48:05,033 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3892828999211978 [2023-08-03 15:48:05,033 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1482 transitions. [2023-08-03 15:48:05,033 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1482 transitions. [2023-08-03 15:48:05,034 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:05,034 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1482 transitions. [2023-08-03 15:48:05,036 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.66666666666666) internal successors, (1482), 9 states have internal predecessors, (1482), 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 15:48:05,039 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 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 15:48:05,039 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 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 15:48:05,039 INFO L175 Difference]: Start difference. First operand has 73 places, 60 transitions, 282 flow. Second operand 9 states and 1482 transitions. [2023-08-03 15:48:05,039 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 122 transitions, 815 flow [2023-08-03 15:48:05,041 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 80 places, 122 transitions, 815 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-03 15:48:05,042 INFO L231 Difference]: Finished difference. Result has 84 places, 72 transitions, 432 flow [2023-08-03 15:48:05,042 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=274, PETRI_DIFFERENCE_MINUEND_PLACES=72, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=59, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=13, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=432, PETRI_PLACES=84, PETRI_TRANSITIONS=72} [2023-08-03 15:48:05,043 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 37 predicate places. [2023-08-03 15:48:05,043 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 72 transitions, 432 flow [2023-08-03 15:48:05,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 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 15:48:05,043 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:05,043 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:05,043 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-08-03 15:48:05,043 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting thr1Err0ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:05,044 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:05,044 INFO L85 PathProgramCache]: Analyzing trace with hash -817530055, now seen corresponding path program 1 times [2023-08-03 15:48:05,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:05,044 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1472229440] [2023-08-03 15:48:05,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:05,044 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:05,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:05,252 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 15:48:05,252 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:05,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1472229440] [2023-08-03 15:48:05,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1472229440] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:05,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:05,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-08-03 15:48:05,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [48729051] [2023-08-03 15:48:05,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:05,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-03 15:48:05,253 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:05,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-03 15:48:05,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-08-03 15:48:05,343 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 154 out of 423 [2023-08-03 15:48:05,344 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 72 transitions, 432 flow. Second operand has 8 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 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 15:48:05,344 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:05,344 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 154 of 423 [2023-08-03 15:48:05,344 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:05,581 INFO L124 PetriNetUnfolderBase]: 684/1129 cut-off events. [2023-08-03 15:48:05,581 INFO L125 PetriNetUnfolderBase]: For 2489/2493 co-relation queries the response was YES. [2023-08-03 15:48:05,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4251 conditions, 1129 events. 684/1129 cut-off events. For 2489/2493 co-relation queries the response was YES. Maximal size of possible extension queue 43. Compared 4981 event pairs, 140 based on Foata normal form. 25/1127 useless extension candidates. Maximal degree in co-relation 3495. Up to 400 conditions per place. [2023-08-03 15:48:05,586 INFO L140 encePairwiseOnDemand]: 411/423 looper letters, 93 selfloop transitions, 27 changer transitions 2/124 dead transitions. [2023-08-03 15:48:05,586 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 124 transitions, 951 flow [2023-08-03 15:48:05,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-08-03 15:48:05,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2023-08-03 15:48:05,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 1478 transitions. [2023-08-03 15:48:05,589 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3882322038350407 [2023-08-03 15:48:05,589 INFO L72 ComplementDD]: Start complementDD. Operand 9 states and 1478 transitions. [2023-08-03 15:48:05,589 INFO L73 IsDeterministic]: Start isDeterministic. Operand 9 states and 1478 transitions. [2023-08-03 15:48:05,590 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:05,590 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 9 states and 1478 transitions. [2023-08-03 15:48:05,592 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 10 states, 9 states have (on average 164.22222222222223) internal successors, (1478), 9 states have internal predecessors, (1478), 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 15:48:05,595 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 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 15:48:05,595 INFO L81 ComplementDD]: Finished complementDD. Result has 10 states, 10 states have (on average 423.0) internal successors, (4230), 10 states have internal predecessors, (4230), 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 15:48:05,595 INFO L175 Difference]: Start difference. First operand has 84 places, 72 transitions, 432 flow. Second operand 9 states and 1478 transitions. [2023-08-03 15:48:05,595 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 124 transitions, 951 flow [2023-08-03 15:48:05,599 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 88 places, 124 transitions, 947 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-03 15:48:05,600 INFO L231 Difference]: Finished difference. Result has 92 places, 76 transitions, 556 flow [2023-08-03 15:48:05,600 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=422, PETRI_DIFFERENCE_MINUEND_PLACES=80, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=71, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=556, PETRI_PLACES=92, PETRI_TRANSITIONS=76} [2023-08-03 15:48:05,600 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 45 predicate places. [2023-08-03 15:48:05,600 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 76 transitions, 556 flow [2023-08-03 15:48:05,601 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 156.25) internal successors, (1250), 8 states have internal predecessors, (1250), 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 15:48:05,601 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:05,601 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:05,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-08-03 15:48:05,601 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:05,601 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:05,601 INFO L85 PathProgramCache]: Analyzing trace with hash -1524187957, now seen corresponding path program 1 times [2023-08-03 15:48:05,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:05,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107345500] [2023-08-03 15:48:05,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:05,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:05,610 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:48:05,610 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1442416230] [2023-08-03 15:48:05,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:05,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:05,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:05,612 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 15:48:05,659 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 15:48:05,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:05,717 INFO L262 TraceCheckSpWp]: Trace formula consists of 214 conjuncts, 6 conjunts are in the unsatisfiable core [2023-08-03 15:48:05,718 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:05,726 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-08-03 15:48:05,726 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:05,726 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:05,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107345500] [2023-08-03 15:48:05,726 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:48:05,726 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1442416230] [2023-08-03 15:48:05,726 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1442416230] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:05,726 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:05,726 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-03 15:48:05,726 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1079322691] [2023-08-03 15:48:05,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:05,726 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-03 15:48:05,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:05,727 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-03 15:48:05,727 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-03 15:48:05,729 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 172 out of 423 [2023-08-03 15:48:05,730 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 76 transitions, 556 flow. Second operand has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 15:48:05,730 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:05,730 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 172 of 423 [2023-08-03 15:48:05,730 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:05,832 INFO L124 PetriNetUnfolderBase]: 385/658 cut-off events. [2023-08-03 15:48:05,832 INFO L125 PetriNetUnfolderBase]: For 2527/2527 co-relation queries the response was YES. [2023-08-03 15:48:05,833 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2934 conditions, 658 events. 385/658 cut-off events. For 2527/2527 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2588 event pairs, 119 based on Foata normal form. 22/668 useless extension candidates. Maximal degree in co-relation 2413. Up to 471 conditions per place. [2023-08-03 15:48:05,835 INFO L140 encePairwiseOnDemand]: 417/423 looper letters, 77 selfloop transitions, 6 changer transitions 0/88 dead transitions. [2023-08-03 15:48:05,835 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 816 flow [2023-08-03 15:48:05,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-03 15:48:05,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-03 15:48:05,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 560 transitions. [2023-08-03 15:48:05,837 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44129235618597323 [2023-08-03 15:48:05,837 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 560 transitions. [2023-08-03 15:48:05,837 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 560 transitions. [2023-08-03 15:48:05,837 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:05,837 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 560 transitions. [2023-08-03 15:48:05,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 186.66666666666666) internal successors, (560), 3 states have internal predecessors, (560), 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 15:48:05,839 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:05,840 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 423.0) internal successors, (1692), 4 states have internal predecessors, (1692), 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 15:48:05,840 INFO L175 Difference]: Start difference. First operand has 92 places, 76 transitions, 556 flow. Second operand 3 states and 560 transitions. [2023-08-03 15:48:05,840 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 816 flow [2023-08-03 15:48:05,844 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 88 transitions, 777 flow, removed 16 selfloop flow, removed 3 redundant places. [2023-08-03 15:48:05,845 INFO L231 Difference]: Finished difference. Result has 90 places, 76 transitions, 533 flow [2023-08-03 15:48:05,845 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=521, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=533, PETRI_PLACES=90, PETRI_TRANSITIONS=76} [2023-08-03 15:48:05,845 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 43 predicate places. [2023-08-03 15:48:05,845 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 76 transitions, 533 flow [2023-08-03 15:48:05,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 177.66666666666666) internal successors, (533), 3 states have internal predecessors, (533), 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 15:48:05,845 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:05,846 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:05,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:06,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:06,051 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:06,051 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:06,051 INFO L85 PathProgramCache]: Analyzing trace with hash -1158563306, now seen corresponding path program 1 times [2023-08-03 15:48:06,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:06,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197084694] [2023-08-03 15:48:06,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:06,059 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:48:06,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1571867320] [2023-08-03 15:48:06,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:06,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:06,061 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 15:48:06,063 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 15:48:06,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:06,157 INFO L262 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 15:48:06,163 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:06,219 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 15:48:06,219 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:06,219 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197084694] [2023-08-03 15:48:06,219 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:48:06,219 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1571867320] [2023-08-03 15:48:06,219 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1571867320] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:06,219 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:06,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:06,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918963951] [2023-08-03 15:48:06,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:06,220 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:06,220 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:06,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:06,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:06,234 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 166 out of 423 [2023-08-03 15:48:06,235 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 76 transitions, 533 flow. Second operand has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 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 15:48:06,235 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:06,235 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 166 of 423 [2023-08-03 15:48:06,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:06,342 INFO L124 PetriNetUnfolderBase]: 375/634 cut-off events. [2023-08-03 15:48:06,343 INFO L125 PetriNetUnfolderBase]: For 2053/2053 co-relation queries the response was YES. [2023-08-03 15:48:06,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2729 conditions, 634 events. 375/634 cut-off events. For 2053/2053 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 2413 event pairs, 141 based on Foata normal form. 6/624 useless extension candidates. Maximal degree in co-relation 2215. Up to 388 conditions per place. [2023-08-03 15:48:06,345 INFO L140 encePairwiseOnDemand]: 419/423 looper letters, 33 selfloop transitions, 0 changer transitions 51/88 dead transitions. [2023-08-03 15:48:06,345 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 93 places, 88 transitions, 804 flow [2023-08-03 15:48:06,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:06,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:06,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 875 transitions. [2023-08-03 15:48:06,347 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.41371158392434987 [2023-08-03 15:48:06,347 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 875 transitions. [2023-08-03 15:48:06,347 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 875 transitions. [2023-08-03 15:48:06,347 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:06,347 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 875 transitions. [2023-08-03 15:48:06,348 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 175.0) internal successors, (875), 5 states have internal predecessors, (875), 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 15:48:06,350 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:06,350 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:06,351 INFO L175 Difference]: Start difference. First operand has 90 places, 76 transitions, 533 flow. Second operand 5 states and 875 transitions. [2023-08-03 15:48:06,351 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 93 places, 88 transitions, 804 flow [2023-08-03 15:48:06,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 92 places, 88 transitions, 798 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-03 15:48:06,354 INFO L231 Difference]: Finished difference. Result has 92 places, 37 transitions, 209 flow [2023-08-03 15:48:06,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=525, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=75, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=209, PETRI_PLACES=92, PETRI_TRANSITIONS=37} [2023-08-03 15:48:06,355 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 45 predicate places. [2023-08-03 15:48:06,355 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 37 transitions, 209 flow [2023-08-03 15:48:06,355 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 169.6) internal successors, (848), 5 states have internal predecessors, (848), 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 15:48:06,355 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-03 15:48:06,356 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:06,362 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-08-03 15:48:06,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:06,560 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting thr1Err2ASSERT_VIOLATIONERROR_FUNCTION === [thr1Err0ASSERT_VIOLATIONERROR_FUNCTION, thr1Err2ASSERT_VIOLATIONERROR_FUNCTION, thr1Err1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 6 more)] === [2023-08-03 15:48:06,561 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-03 15:48:06,561 INFO L85 PathProgramCache]: Analyzing trace with hash 1721541490, now seen corresponding path program 1 times [2023-08-03 15:48:06,561 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-03 15:48:06,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466504428] [2023-08-03 15:48:06,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-03 15:48:06,569 ERROR L246 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-08-03 15:48:06,569 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [2001257982] [2023-08-03 15:48:06,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-03 15:48:06,569 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-03 15:48:06,569 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-03 15:48:06,571 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 15:48:06,572 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 15:48:06,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-03 15:48:06,656 INFO L262 TraceCheckSpWp]: Trace formula consists of 222 conjuncts, 9 conjunts are in the unsatisfiable core [2023-08-03 15:48:06,657 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-03 15:48:06,692 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 15:48:06,693 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-03 15:48:06,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-03 15:48:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466504428] [2023-08-03 15:48:06,693 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-08-03 15:48:06,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001257982] [2023-08-03 15:48:06,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2001257982] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-03 15:48:06,693 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-03 15:48:06,693 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-08-03 15:48:06,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339564702] [2023-08-03 15:48:06,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-03 15:48:06,693 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-03 15:48:06,694 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-03 15:48:06,694 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-03 15:48:06,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-08-03 15:48:06,709 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 167 out of 423 [2023-08-03 15:48:06,710 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 37 transitions, 209 flow. Second operand has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 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 15:48:06,710 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-03 15:48:06,710 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 167 of 423 [2023-08-03 15:48:06,710 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-03 15:48:06,773 INFO L124 PetriNetUnfolderBase]: 136/236 cut-off events. [2023-08-03 15:48:06,773 INFO L125 PetriNetUnfolderBase]: For 659/659 co-relation queries the response was YES. [2023-08-03 15:48:06,774 INFO L83 FinitePrefix]: Finished finitePrefix Result has 969 conditions, 236 events. 136/236 cut-off events. For 659/659 co-relation queries the response was YES. Maximal size of possible extension queue 12. Compared 596 event pairs, 38 based on Foata normal form. 6/233 useless extension candidates. Maximal degree in co-relation 941. Up to 114 conditions per place. [2023-08-03 15:48:06,774 INFO L140 encePairwiseOnDemand]: 419/423 looper letters, 0 selfloop transitions, 0 changer transitions 47/47 dead transitions. [2023-08-03 15:48:06,774 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 71 places, 47 transitions, 372 flow [2023-08-03 15:48:06,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-03 15:48:06,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-03 15:48:06,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 866 transitions. [2023-08-03 15:48:06,776 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4094562647754137 [2023-08-03 15:48:06,776 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 866 transitions. [2023-08-03 15:48:06,776 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 866 transitions. [2023-08-03 15:48:06,776 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-03 15:48:06,776 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 866 transitions. [2023-08-03 15:48:06,777 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 173.2) internal successors, (866), 5 states have internal predecessors, (866), 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 15:48:06,779 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:06,780 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 423.0) internal successors, (2538), 6 states have internal predecessors, (2538), 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 15:48:06,780 INFO L175 Difference]: Start difference. First operand has 92 places, 37 transitions, 209 flow. Second operand 5 states and 866 transitions. [2023-08-03 15:48:06,780 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 71 places, 47 transitions, 372 flow [2023-08-03 15:48:06,781 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 63 places, 47 transitions, 344 flow, removed 2 selfloop flow, removed 8 redundant places. [2023-08-03 15:48:06,781 INFO L231 Difference]: Finished difference. Result has 63 places, 0 transitions, 0 flow [2023-08-03 15:48:06,781 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=423, PETRI_DIFFERENCE_MINUEND_FLOW=189, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=63, PETRI_TRANSITIONS=0} [2023-08-03 15:48:06,781 INFO L281 CegarLoopForPetriNet]: 47 programPoint places, 16 predicate places. [2023-08-03 15:48:06,782 INFO L495 AbstractCegarLoop]: Abstraction has has 63 places, 0 transitions, 0 flow [2023-08-03 15:48:06,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 170.6) internal successors, (853), 5 states have internal predecessors, (853), 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 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (9 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (8 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (7 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (6 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (5 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (4 of 10 remaining) [2023-08-03 15:48:06,782 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (3 of 10 remaining) [2023-08-03 15:48:06,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err0ASSERT_VIOLATIONERROR_FUNCTION (2 of 10 remaining) [2023-08-03 15:48:06,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err2ASSERT_VIOLATIONERROR_FUNCTION (1 of 10 remaining) [2023-08-03 15:48:06,783 INFO L805 garLoopResultBuilder]: Registering result SAFE for location thr1Err1ASSERT_VIOLATIONERROR_FUNCTION (0 of 10 remaining) [2023-08-03 15:48:06,791 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 15:48:06,987 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2023-08-03 15:48:06,988 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-03 15:48:06,990 INFO L228 ceAbstractionStarter]: Analysis of concurrent program completed with 2 thread instances [2023-08-03 15:48:06,990 INFO L178 ceAbstractionStarter]: Computing trace abstraction results [2023-08-03 15:48:06,993 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.08 03:48:06 BasicIcfg [2023-08-03 15:48:06,993 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2023-08-03 15:48:06,993 INFO L158 Benchmark]: Toolchain (without parser) took 13839.19ms. Allocated memory was 566.2MB in the beginning and 679.5MB in the end (delta: 113.2MB). Free memory was 524.3MB in the beginning and 453.3MB in the end (delta: 71.0MB). Peak memory consumption was 186.4MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,993 INFO L158 Benchmark]: CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 320.4MB. There was no memory consumed. Max. memory is 16.0GB. [2023-08-03 15:48:06,993 INFO L158 Benchmark]: CACSL2BoogieTranslator took 373.82ms. Allocated memory is still 566.2MB. Free memory was 524.3MB in the beginning and 503.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,993 INFO L158 Benchmark]: Boogie Procedure Inliner took 30.71ms. Allocated memory is still 566.2MB. Free memory was 503.4MB in the beginning and 501.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,993 INFO L158 Benchmark]: Boogie Preprocessor took 21.11ms. Allocated memory is still 566.2MB. Free memory was 501.4MB in the beginning and 499.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,994 INFO L158 Benchmark]: RCFGBuilder took 446.07ms. Allocated memory is still 566.2MB. Free memory was 499.3MB in the beginning and 477.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,994 INFO L158 Benchmark]: TraceAbstraction took 12960.62ms. Allocated memory was 566.2MB in the beginning and 679.5MB in the end (delta: 113.2MB). Free memory was 476.2MB in the beginning and 453.3MB in the end (delta: 22.9MB). Peak memory consumption was 138.2MB. Max. memory is 16.0GB. [2023-08-03 15:48:06,995 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.10ms. Allocated memory is still 371.2MB. Free memory is still 320.4MB. There was no memory consumed. Max. memory is 16.0GB. * CACSL2BoogieTranslator took 373.82ms. Allocated memory is still 566.2MB. Free memory was 524.3MB in the beginning and 503.4MB in the end (delta: 21.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.0GB. * Boogie Procedure Inliner took 30.71ms. Allocated memory is still 566.2MB. Free memory was 503.4MB in the beginning and 501.4MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * Boogie Preprocessor took 21.11ms. Allocated memory is still 566.2MB. Free memory was 501.4MB in the beginning and 499.3MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.0GB. * RCFGBuilder took 446.07ms. Allocated memory is still 566.2MB. Free memory was 499.3MB in the beginning and 477.2MB in the end (delta: 22.1MB). Peak memory consumption was 23.1MB. Max. memory is 16.0GB. * TraceAbstraction took 12960.62ms. Allocated memory was 566.2MB in the beginning and 679.5MB in the end (delta: 113.2MB). Free memory was 476.2MB in the beginning and 453.3MB in the end (delta: 22.9MB). Peak memory consumption was 138.2MB. Max. memory is 16.0GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] - GenericResultAtLocation [Line: 256]: Unsoundness Warning unspecified type, defaulting to int C: short [256] * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 2.9s, 110 PlacesBefore, 19 PlacesAfterwards, 120 TransitionsBefore, 22 TransitionsAfterwards, 2784 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 84 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 26 ConcurrentYvCompositions, 7 ChoiceCompositions, 132 TotalNumberOfCompositions, 2931 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 2401, independent: 2355, independent conditional: 0, independent unconditional: 2355, dependent: 46, dependent conditional: 0, dependent unconditional: 46, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 1495, independent: 1474, independent conditional: 0, independent unconditional: 1474, dependent: 21, dependent conditional: 0, dependent unconditional: 21, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 2401, independent: 881, independent conditional: 0, independent unconditional: 881, dependent: 25, dependent conditional: 0, dependent unconditional: 25, unknown: 1495, unknown conditional: 0, unknown unconditional: 1495] , Statistics on independence cache: Total cache size (in pairs): 25, Positive cache size: 21, Positive conditional cache size: 0, Positive unconditional cache size: 21, Negative cache size: 4, Negative conditional cache size: 0, Negative unconditional cache size: 4, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - StatisticsResult: PetriNetLargeBlockEncoding benchmarks Lipton Reduction Statistics: ReductionTime: 3.7s, 188 PlacesBefore, 47 PlacesAfterwards, 208 TransitionsBefore, 54 TransitionsAfterwards, 20880 CoEnabledTransitionPairs, 5 FixpointIterations, 15 TrivialSequentialCompositions, 142 ConcurrentSequentialCompositions, 0 TrivialYvCompositions, 45 ConcurrentYvCompositions, 13 ChoiceCompositions, 215 TotalNumberOfCompositions, 26938 MoverChecksTotal, Independence Relation Statistics: CachedIndependenceRelation.Independence Queries: [ total: 19930, independent: 19691, independent conditional: 0, independent unconditional: 19691, dependent: 239, dependent conditional: 0, dependent unconditional: 239, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , CachedIndependenceRelation.Statistics on underlying relation: SyntacticIndependenceRelation.Independence Queries: [ total: 11626, independent: 11564, independent conditional: 0, independent unconditional: 11564, dependent: 62, dependent conditional: 0, dependent unconditional: 62, unknown: 0, unknown conditional: 0, unknown unconditional: 0] , Cache Queries: [ total: 19930, independent: 8127, independent conditional: 0, independent unconditional: 8127, dependent: 177, dependent conditional: 0, dependent unconditional: 177, unknown: 11626, unknown conditional: 0, unknown unconditional: 11626] , Statistics on independence cache: Total cache size (in pairs): 400, Positive cache size: 375, Positive conditional cache size: 0, Positive unconditional cache size: 375, Negative cache size: 25, Negative conditional cache size: 0, Negative unconditional cache size: 25, Unknown cache size: 0, Unknown conditional cache size: 0, Unknown unconditional cache size: 0 - PositiveResult [Line: 748]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 759]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - PositiveResult [Line: 732]: call to reach_error is unreachable For all program executions holds that call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 184 locations, 7 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 3.5s, OverallIterations: 2, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 20 SdHoareTripleChecker+Valid, 0.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 8 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 1 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 56 IncrementalHoareTripleChecker+Invalid, 57 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 1 mSolverCounterUnsat, 0 mSDtfsCounter, 56 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=1, InterpolantAutomatonStates: 3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 11 NumberOfCodeBlocks, 11 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 4 ConstructedInterpolants, 0 QuantifiedInterpolants, 10 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - StatisticsResult: Ultimate Automizer benchmark data with 2 thread instances CFG has 4 procedures, 260 locations, 10 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 9.3s, OverallIterations: 13, TraceHistogramMax: 3, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 2.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 3.7s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1221 SdHoareTripleChecker+Valid, 1.3s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1019 mSDsluCounter, 414 SdHoareTripleChecker+Invalid, 1.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 384 mSDsCounter, 59 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 2598 IncrementalHoareTripleChecker+Invalid, 2657 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 59 mSolverCounterUnsat, 30 mSDtfsCounter, 2598 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 147 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 56 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=556occurred in iteration=10, InterpolantAutomatonStates: 66, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 237 NumberOfCodeBlocks, 237 NumberOfCodeBlocksAsserted, 15 NumberOfCheckSat, 206 ConstructedInterpolants, 0 QuantifiedInterpolants, 551 SizeOfPredicates, 11 NumberOfNonLiveVariables, 945 ConjunctsInSsa, 31 ConjunctsInUnsatCore, 14 InterpolantComputations, 13 PerfectInterpolantSequences, 30/35 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2023-08-03 15:48:07,017 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request...