/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-min.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:26:09,063 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:26:09,113 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:26:09,117 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:26:09,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:26:09,118 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:26:09,119 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:26:09,139 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:26:09,140 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:26:09,140 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:26:09,141 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:26:09,141 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:26:09,141 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:26:09,142 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:26:09,142 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:26:09,142 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:26:09,143 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:26:09,143 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:26:09,143 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:26:09,144 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:26:09,144 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:26:09,148 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:26:09,148 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:26:09,148 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:26:09,149 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:26:09,149 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:26:09,149 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:26:09,149 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:26:09,150 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:26:09,150 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:26:09,150 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:26:09,150 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:26:09,151 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:26:09,151 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:26:09,151 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:26:09,151 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:26:09,152 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:26:09,152 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:26:09,152 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:26:09,153 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:26:09,153 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:26:09,157 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:26:09,402 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:26:09,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:26:09,427 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:26:09,427 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:26:09,428 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:26:09,429 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-min.wvr_bound2.c [2023-08-04 03:26:10,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:26:10,792 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:26:10,793 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-min.wvr_bound2.c [2023-08-04 03:26:10,802 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c38a63e91/b166284cf4334d118af89da88fc009d5/FLAGb29fe5135 [2023-08-04 03:26:10,821 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c38a63e91/b166284cf4334d118af89da88fc009d5 [2023-08-04 03:26:10,823 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:26:10,824 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:26:10,825 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:26:10,826 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:26:10,829 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:26:10,829 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:26:10" (1/1) ... [2023-08-04 03:26:10,830 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4a3448d2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:10, skipping insertion in model container [2023-08-04 03:26:10,830 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:26:10" (1/1) ... [2023-08-04 03:26:10,865 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:26:11,000 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-min.wvr_bound2.c[3058,3071] [2023-08-04 03:26:11,006 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:26:11,019 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:26:11,045 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-three-array-min.wvr_bound2.c[3058,3071] [2023-08-04 03:26:11,052 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:26:11,060 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:26:11,061 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:26:11,067 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:26:11,068 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11 WrapperNode [2023-08-04 03:26:11,068 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:26:11,069 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:26:11,069 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:26:11,069 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:26:11,075 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,083 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,109 INFO L138 Inliner]: procedures = 26, calls = 57, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 284 [2023-08-04 03:26:11,109 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:26:11,110 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:26:11,110 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:26:11,110 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:26:11,118 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,118 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,122 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,123 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,132 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,137 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,139 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,141 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,144 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:26:11,145 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:26:11,145 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:26:11,145 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:26:11,146 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (1/1) ... [2023-08-04 03:26:11,151 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:26:11,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:26:11,174 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) [2023-08-04 03:26:11,176 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 [2023-08-04 03:26:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:26:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:26:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:26:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:26:11,201 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:26:11,201 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:26:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 03:26:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 03:26:11,202 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:26:11,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:26:11,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:26:11,204 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:26:11,312 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:26:11,314 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:26:11,694 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:26:11,773 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:26:11,773 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 03:26:11,776 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:26:11 BoogieIcfgContainer [2023-08-04 03:26:11,776 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:26:11,778 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:26:11,778 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:26:11,781 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:26:11,781 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:26:10" (1/3) ... [2023-08-04 03:26:11,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103f2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:26:11, skipping insertion in model container [2023-08-04 03:26:11,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:26:11" (2/3) ... [2023-08-04 03:26:11,782 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4103f2fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:26:11, skipping insertion in model container [2023-08-04 03:26:11,782 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:26:11" (3/3) ... [2023-08-04 03:26:11,784 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-three-array-min.wvr_bound2.c [2023-08-04 03:26:11,798 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:26:11,805 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:26:11,805 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:26:11,805 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:26:11,910 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 03:26:11,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,244 INFO L124 PetriNetUnfolderBase]: 133/949 cut-off events. [2023-08-04 03:26:12,245 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:26:12,260 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 949 events. 133/949 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4411 event pairs, 0 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 574. Up to 16 conditions per place. [2023-08-04 03:26:12,261 INFO L82 GeneralOperation]: Start removeDead. Operand has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,274 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,277 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:26:12,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 297 places, 332 transitions, 706 flow [2023-08-04 03:26:12,443 INFO L124 PetriNetUnfolderBase]: 133/949 cut-off events. [2023-08-04 03:26:12,444 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:26:12,449 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1010 conditions, 949 events. 133/949 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 4411 event pairs, 0 based on Foata normal form. 0/806 useless extension candidates. Maximal degree in co-relation 574. Up to 16 conditions per place. [2023-08-04 03:26:12,468 INFO L119 LiptonReduction]: Number of co-enabled transitions 11058 [2023-08-04 03:26:20,625 INFO L134 LiptonReduction]: Checked pairs total: 20934 [2023-08-04 03:26:20,625 INFO L136 LiptonReduction]: Total number of compositions: 334 [2023-08-04 03:26:20,638 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:26:20,643 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;@1c26c879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:26:20,643 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:26:20,649 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:26:20,649 INFO L124 PetriNetUnfolderBase]: 6/40 cut-off events. [2023-08-04 03:26:20,649 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:26:20,650 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:20,650 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:26:20,651 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:26:20,655 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:20,655 INFO L85 PathProgramCache]: Analyzing trace with hash -2055826678, now seen corresponding path program 1 times [2023-08-04 03:26:20,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:20,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726787397] [2023-08-04 03:26:20,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:20,664 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:20,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:21,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:26:21,180 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:26:21,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726787397] [2023-08-04 03:26:21,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726787397] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:26:21,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:26:21,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:26:21,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519353264] [2023-08-04 03:26:21,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:26:21,192 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:26:21,198 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:26:21,217 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:26:21,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:26:21,298 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 666 [2023-08-04 03:26:21,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 63 transitions, 168 flow. Second operand has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:21,303 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:26:21,303 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 666 [2023-08-04 03:26:21,304 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:26:22,316 INFO L124 PetriNetUnfolderBase]: 7294/9789 cut-off events. [2023-08-04 03:26:22,316 INFO L125 PetriNetUnfolderBase]: For 534/534 co-relation queries the response was YES. [2023-08-04 03:26:22,329 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19559 conditions, 9789 events. 7294/9789 cut-off events. For 534/534 co-relation queries the response was YES. Maximal size of possible extension queue 467. Compared 48810 event pairs, 3504 based on Foata normal form. 0/5562 useless extension candidates. Maximal degree in co-relation 17291. Up to 9348 conditions per place. [2023-08-04 03:26:22,351 INFO L140 encePairwiseOnDemand]: 662/666 looper letters, 31 selfloop transitions, 2 changer transitions 23/63 dead transitions. [2023-08-04 03:26:22,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 53 places, 63 transitions, 274 flow [2023-08-04 03:26:22,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 03:26:22,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 03:26:22,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 892 transitions. [2023-08-04 03:26:22,367 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.44644644644644643 [2023-08-04 03:26:22,368 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 892 transitions. [2023-08-04 03:26:22,368 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 892 transitions. [2023-08-04 03:26:22,370 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:26:22,372 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 892 transitions. [2023-08-04 03:26:22,378 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 297.3333333333333) internal successors, (892), 3 states have internal predecessors, (892), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:22,385 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 666.0) internal successors, (2664), 4 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:22,386 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 666.0) internal successors, (2664), 4 states have internal predecessors, (2664), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:22,388 INFO L175 Difference]: Start difference. First operand has 52 places, 63 transitions, 168 flow. Second operand 3 states and 892 transitions. [2023-08-04 03:26:22,389 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 53 places, 63 transitions, 274 flow [2023-08-04 03:26:22,393 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 53 places, 63 transitions, 274 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 03:26:22,395 INFO L231 Difference]: Finished difference. Result has 54 places, 40 transitions, 105 flow [2023-08-04 03:26:22,397 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=666, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=51, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=62, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=105, PETRI_PLACES=54, PETRI_TRANSITIONS=40} [2023-08-04 03:26:22,401 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, 2 predicate places. [2023-08-04 03:26:22,401 INFO L495 AbstractCegarLoop]: Abstraction has has 54 places, 40 transitions, 105 flow [2023-08-04 03:26:22,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 281.3333333333333) internal successors, (844), 3 states have internal predecessors, (844), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:22,402 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:22,402 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:26:22,402 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:26:22,403 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:26:22,403 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:22,403 INFO L85 PathProgramCache]: Analyzing trace with hash 164428339, now seen corresponding path program 1 times [2023-08-04 03:26:22,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:22,404 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137847680] [2023-08-04 03:26:22,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:22,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:22,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:22,535 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-08-04 03:26:22,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:26:22,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137847680] [2023-08-04 03:26:22,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137847680] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:26:22,536 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1955379319] [2023-08-04 03:26:22,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:22,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:26:22,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:26:22,541 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) [2023-08-04 03:26:22,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:26:22,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:22,652 INFO L262 TraceCheckSpWp]: Trace formula consists of 230 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-04 03:26:22,656 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:26:22,717 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-08-04 03:26:22,718 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:26:22,718 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1955379319] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:26:22,718 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:26:22,718 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 6 [2023-08-04 03:26:22,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132215474] [2023-08-04 03:26:22,719 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:26:22,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-08-04 03:26:22,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:26:22,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-08-04 03:26:22,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2023-08-04 03:26:22,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 279 out of 666 [2023-08-04 03:26:22,801 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 54 places, 40 transitions, 105 flow. Second operand has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:22,801 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:26:22,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 279 of 666 [2023-08-04 03:26:22,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 03:26:23,046 INFO L124 PetriNetUnfolderBase]: 1731/2412 cut-off events. [2023-08-04 03:26:23,046 INFO L125 PetriNetUnfolderBase]: For 24/24 co-relation queries the response was YES. [2023-08-04 03:26:23,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4844 conditions, 2412 events. 1731/2412 cut-off events. For 24/24 co-relation queries the response was YES. Maximal size of possible extension queue 133. Compared 10502 event pairs, 821 based on Foata normal form. 0/1461 useless extension candidates. Maximal degree in co-relation 4830. Up to 2276 conditions per place. [2023-08-04 03:26:23,064 INFO L140 encePairwiseOnDemand]: 659/666 looper letters, 29 selfloop transitions, 6 changer transitions 0/42 dead transitions. [2023-08-04 03:26:23,064 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 42 transitions, 179 flow [2023-08-04 03:26:23,065 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-08-04 03:26:23,065 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2023-08-04 03:26:23,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 1153 transitions. [2023-08-04 03:26:23,068 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4328078078078078 [2023-08-04 03:26:23,068 INFO L72 ComplementDD]: Start complementDD. Operand 4 states and 1153 transitions. [2023-08-04 03:26:23,068 INFO L73 IsDeterministic]: Start isDeterministic. Operand 4 states and 1153 transitions. [2023-08-04 03:26:23,069 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 03:26:23,069 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 4 states and 1153 transitions. [2023-08-04 03:26:23,071 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 5 states, 4 states have (on average 288.25) internal successors, (1153), 4 states have internal predecessors, (1153), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:23,076 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 5 states, 5 states have (on average 666.0) internal successors, (3330), 5 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:23,078 INFO L81 ComplementDD]: Finished complementDD. Result has 5 states, 5 states have (on average 666.0) internal successors, (3330), 5 states have internal predecessors, (3330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:23,078 INFO L175 Difference]: Start difference. First operand has 54 places, 40 transitions, 105 flow. Second operand 4 states and 1153 transitions. [2023-08-04 03:26:23,078 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 42 transitions, 179 flow [2023-08-04 03:26:23,079 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 42 transitions, 175 flow, removed 1 selfloop flow, removed 1 redundant places. [2023-08-04 03:26:23,080 INFO L231 Difference]: Finished difference. Result has 43 places, 42 transitions, 129 flow [2023-08-04 03:26:23,080 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=666, PETRI_DIFFERENCE_MINUEND_FLOW=101, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=40, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=129, PETRI_PLACES=43, PETRI_TRANSITIONS=42} [2023-08-04 03:26:23,081 INFO L281 CegarLoopForPetriNet]: 52 programPoint places, -9 predicate places. [2023-08-04 03:26:23,081 INFO L495 AbstractCegarLoop]: Abstraction has has 43 places, 42 transitions, 129 flow [2023-08-04 03:26:23,082 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 281.0) internal successors, (1124), 4 states have internal predecessors, (1124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:23,082 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:23,082 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:26:23,089 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-08-04 03:26:23,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:26:23,288 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:26:23,289 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:23,289 INFO L85 PathProgramCache]: Analyzing trace with hash 392297535, now seen corresponding path program 1 times [2023-08-04 03:26:23,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:23,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19889166] [2023-08-04 03:26:23,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:23,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:26:23,342 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:26:23,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:26:23,400 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:26:23,400 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:26:23,402 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:26:23,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:26:23,405 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:26:23,405 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-08-04 03:26:23,406 INFO L445 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2023-08-04 03:26:23,408 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 03:26:23,408 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:26:23,408 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:26:23,450 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 03:26:23,454 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:24,508 INFO L124 PetriNetUnfolderBase]: 1051/5615 cut-off events. [2023-08-04 03:26:24,508 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:26:24,562 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 5615 events. 1051/5615 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 47513 event pairs, 11 based on Foata normal form. 0/4808 useless extension candidates. Maximal degree in co-relation 3274. Up to 192 conditions per place. [2023-08-04 03:26:24,563 INFO L82 GeneralOperation]: Start removeDead. Operand has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:24,597 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:24,597 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:26:24,597 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:24,597 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:24,597 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 345 places, 392 transitions, 874 flow [2023-08-04 03:26:25,486 INFO L124 PetriNetUnfolderBase]: 1051/5615 cut-off events. [2023-08-04 03:26:25,487 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:26:25,549 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6289 conditions, 5615 events. 1051/5615 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 47513 event pairs, 11 based on Foata normal form. 0/4808 useless extension candidates. Maximal degree in co-relation 3274. Up to 192 conditions per place. [2023-08-04 03:26:25,677 INFO L119 LiptonReduction]: Number of co-enabled transitions 28788 [2023-08-04 03:26:35,007 INFO L134 LiptonReduction]: Checked pairs total: 82627 [2023-08-04 03:26:35,007 INFO L136 LiptonReduction]: Total number of compositions: 367 [2023-08-04 03:26:35,009 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:26:35,010 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;@1c26c879, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:26:35,010 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:26:35,020 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:26:35,021 INFO L124 PetriNetUnfolderBase]: 24/145 cut-off events. [2023-08-04 03:26:35,021 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:26:35,021 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:26:35,021 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:26:35,021 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:26:35,021 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:26:35,022 INFO L85 PathProgramCache]: Analyzing trace with hash -797738361, now seen corresponding path program 1 times [2023-08-04 03:26:35,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:26:35,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1517687415] [2023-08-04 03:26:35,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:26:35,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:26:35,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:26:35,096 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-08-04 03:26:35,097 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:26:35,097 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1517687415] [2023-08-04 03:26:35,097 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1517687415] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:26:35,097 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 03:26:35,097 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 03:26:35,098 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [264395665] [2023-08-04 03:26:35,098 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:26:35,098 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 03:26:35,098 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:26:35,099 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 03:26:35,099 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 03:26:35,141 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 324 out of 759 [2023-08-04 03:26:35,142 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 102 transitions, 294 flow. Second operand has 3 states, 3 states have (on average 326.6666666666667) internal successors, (980), 3 states have internal predecessors, (980), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:26:35,142 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:26:35,142 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 324 of 759 [2023-08-04 03:26:35,143 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand