/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_chl-poker-hand-trans.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:10:18,852 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:10:18,903 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:10:18,907 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:10:18,907 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:10:18,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:10:18,908 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:10:18,930 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:10:18,931 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:10:18,935 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:10:18,935 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:10:18,936 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:10:18,937 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:10:18,938 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:10:18,938 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:10:18,938 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:10:18,938 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:10:18,939 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:10:18,939 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:10:18,939 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:10:18,939 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:10:18,940 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:10:18,940 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:10:18,941 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:10:18,941 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:10:18,941 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:10:18,942 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:10:18,943 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:10:18,943 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:10:18,943 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:10:18,944 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:10:18,944 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:10:18,944 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:10:18,944 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:10:18,945 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:10:18,946 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:10:19,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:10:19,178 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:10:19,181 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:10:19,182 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:10:19,182 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:10:19,184 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 02:10:20,390 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:10:20,575 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:10:20,575 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 02:10:20,586 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec097140/28ecbe8914ce42ef908a9517fb54212c/FLAG8be77c296 [2023-08-04 02:10:20,598 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cec097140/28ecbe8914ce42ef908a9517fb54212c [2023-08-04 02:10:20,600 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:10:20,601 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:10:20,603 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:10:20,603 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:10:20,606 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:10:20,606 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:10:20" (1/1) ... [2023-08-04 02:10:20,607 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c109cec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:20, skipping insertion in model container [2023-08-04 02:10:20,607 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:10:20" (1/1) ... [2023-08-04 02:10:20,659 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:10:20,935 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_chl-poker-hand-trans.wvr_bound2.c[19117,19130] [2023-08-04 02:10:20,939 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:10:20,947 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:10:21,047 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_chl-poker-hand-trans.wvr_bound2.c[19117,19130] [2023-08-04 02:10:21,050 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:10:21,096 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:10:21,096 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:10:21,102 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:10:21,102 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21 WrapperNode [2023-08-04 02:10:21,102 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:10:21,103 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:10:21,104 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:10:21,104 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:10:21,110 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,132 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,220 INFO L138 Inliner]: procedures = 26, calls = 454, calls flagged for inlining = 100, calls inlined = 144, statements flattened = 2413 [2023-08-04 02:10:21,221 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:10:21,222 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:10:21,222 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:10:21,222 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:10:21,236 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,236 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,255 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,256 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,332 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,367 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,381 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,395 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:10:21,396 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:10:21,397 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:10:21,397 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:10:21,397 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (1/1) ... [2023-08-04 02:10:21,405 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:10:21,414 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:10:21,434 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 02:10:21,459 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 02:10:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:10:21,476 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:10:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:10:21,477 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:10:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:10:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:10:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:10:21,478 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:10:21,478 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:10:21,479 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:10:21,480 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:10:21,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:10:21,483 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 02:10:21,714 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:10:21,716 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:10:23,512 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:10:25,799 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:10:25,800 INFO L302 CfgBuilder]: Removed 24 assume(true) statements. [2023-08-04 02:10:25,803 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:10:25 BoogieIcfgContainer [2023-08-04 02:10:25,803 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:10:25,806 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:10:25,806 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:10:25,809 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:10:25,809 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:10:20" (1/3) ... [2023-08-04 02:10:25,810 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316d8fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:10:25, skipping insertion in model container [2023-08-04 02:10:25,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:10:21" (2/3) ... [2023-08-04 02:10:25,811 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@316d8fec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:10:25, skipping insertion in model container [2023-08-04 02:10:25,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:10:25" (3/3) ... [2023-08-04 02:10:25,812 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_chl-poker-hand-trans.wvr_bound2.c [2023-08-04 02:10:25,821 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:10:25,829 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:10:25,829 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:10:25,829 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:10:26,301 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 02:10:26,360 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:26,984 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 02:10:26,984 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:10:27,007 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 02:10:27,007 INFO L82 GeneralOperation]: Start removeDead. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:27,026 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:27,029 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:10:27,041 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:27,045 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:27,045 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 687 places, 774 transitions, 1590 flow [2023-08-04 02:10:27,477 INFO L124 PetriNetUnfolderBase]: 200/1422 cut-off events. [2023-08-04 02:10:27,477 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:10:27,490 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1483 conditions, 1422 events. 200/1422 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 34. Compared 6201 event pairs, 0 based on Foata normal form. 0/1212 useless extension candidates. Maximal degree in co-relation 967. Up to 28 conditions per place. [2023-08-04 02:10:27,529 INFO L119 LiptonReduction]: Number of co-enabled transitions 43560 [2023-08-04 02:11:49,904 INFO L134 LiptonReduction]: Checked pairs total: 51985 [2023-08-04 02:11:49,904 INFO L136 LiptonReduction]: Total number of compositions: 884 [2023-08-04 02:11:49,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:11:49,924 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;@415c43dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:11:49,924 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:11:50,031 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:11:50,031 INFO L124 PetriNetUnfolderBase]: 24/68 cut-off events. [2023-08-04 02:11:50,031 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:11:50,031 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:50,032 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:11:50,033 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 02:11:50,037 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:50,037 INFO L85 PathProgramCache]: Analyzing trace with hash 516068494, now seen corresponding path program 1 times [2023-08-04 02:11:50,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:50,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938024018] [2023-08-04 02:11:50,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:50,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:50,587 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 02:11:50,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:50,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938024018] [2023-08-04 02:11:50,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938024018] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:11:50,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:11:50,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:11:50,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743618437] [2023-08-04 02:11:50,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:11:50,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:11:50,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:50,626 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:11:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:11:50,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 02:11:50,911 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 83 transitions, 208 flow. Second operand has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 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 02:11:50,911 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:50,911 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 02:11:50,912 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:11:58,379 INFO L124 PetriNetUnfolderBase]: 6115/7851 cut-off events. [2023-08-04 02:11:58,379 INFO L125 PetriNetUnfolderBase]: For 351/351 co-relation queries the response was YES. [2023-08-04 02:11:58,388 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15811 conditions, 7851 events. 6115/7851 cut-off events. For 351/351 co-relation queries the response was YES. Maximal size of possible extension queue 245. Compared 28902 event pairs, 2466 based on Foata normal form. 0/3897 useless extension candidates. Maximal degree in co-relation 12842. Up to 7620 conditions per place. [2023-08-04 02:11:58,404 INFO L140 encePairwiseOnDemand]: 1650/1658 looper letters, 54 selfloop transitions, 6 changer transitions 22/85 dead transitions. [2023-08-04 02:11:58,405 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 85 transitions, 370 flow [2023-08-04 02:11:58,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:11:58,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:11:58,423 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1976 transitions. [2023-08-04 02:11:58,433 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39726578206674706 [2023-08-04 02:11:58,434 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1976 transitions. [2023-08-04 02:11:58,434 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1976 transitions. [2023-08-04 02:11:58,438 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:11:58,441 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1976 transitions. [2023-08-04 02:11:58,449 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 658.6666666666666) internal successors, (1976), 3 states have internal predecessors, (1976), 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 02:11:58,462 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:11:58,466 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:11:58,468 INFO L175 Difference]: Start difference. First operand has 57 places, 83 transitions, 208 flow. Second operand 3 states and 1976 transitions. [2023-08-04 02:11:58,469 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 85 transitions, 370 flow [2023-08-04 02:11:58,475 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 85 transitions, 370 flow, removed 0 selfloop flow, removed 0 redundant places. [2023-08-04 02:11:58,477 INFO L231 Difference]: Finished difference. Result has 59 places, 63 transitions, 167 flow [2023-08-04 02:11:58,478 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=206, PETRI_DIFFERENCE_MINUEND_PLACES=56, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=167, PETRI_PLACES=59, PETRI_TRANSITIONS=63} [2023-08-04 02:11:58,481 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 2 predicate places. [2023-08-04 02:11:58,482 INFO L495 AbstractCegarLoop]: Abstraction has has 59 places, 63 transitions, 167 flow [2023-08-04 02:11:58,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 636.3333333333334) internal successors, (1909), 3 states have internal predecessors, (1909), 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 02:11:58,484 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:11:58,484 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] [2023-08-04 02:11:58,484 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:11:58,484 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 02:11:58,493 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:11:58,493 INFO L85 PathProgramCache]: Analyzing trace with hash -107087334, now seen corresponding path program 1 times [2023-08-04 02:11:58,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:11:58,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169079488] [2023-08-04 02:11:58,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:11:58,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:11:58,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:11:58,687 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-08-04 02:11:58,687 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:11:58,687 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169079488] [2023-08-04 02:11:58,687 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169079488] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:11:58,687 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:11:58,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:11:58,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828586769] [2023-08-04 02:11:58,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:11:58,689 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:11:58,690 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:11:58,690 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:11:58,691 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:11:58,904 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 02:11:58,906 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 59 places, 63 transitions, 167 flow. Second operand has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 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 02:11:58,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:11:58,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 02:11:58,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:01,278 INFO L124 PetriNetUnfolderBase]: 1648/2149 cut-off events. [2023-08-04 02:12:01,278 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 02:12:01,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4380 conditions, 2149 events. 1648/2149 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6626 event pairs, 648 based on Foata normal form. 0/1122 useless extension candidates. Maximal degree in co-relation 4334. Up to 2098 conditions per place. [2023-08-04 02:12:01,287 INFO L140 encePairwiseOnDemand]: 1645/1658 looper letters, 54 selfloop transitions, 12 changer transitions 0/69 dead transitions. [2023-08-04 02:12:01,287 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 69 transitions, 311 flow [2023-08-04 02:12:01,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:12:01,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:12:01,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1962 transitions. [2023-08-04 02:12:01,294 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3944511459589867 [2023-08-04 02:12:01,294 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1962 transitions. [2023-08-04 02:12:01,295 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1962 transitions. [2023-08-04 02:12:01,296 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:01,296 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1962 transitions. [2023-08-04 02:12:01,300 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 654.0) internal successors, (1962), 3 states have internal predecessors, (1962), 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 02:12:01,308 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:12:01,311 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:12:01,311 INFO L175 Difference]: Start difference. First operand has 59 places, 63 transitions, 167 flow. Second operand 3 states and 1962 transitions. [2023-08-04 02:12:01,311 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 48 places, 69 transitions, 311 flow [2023-08-04 02:12:01,312 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 69 transitions, 305 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:12:01,313 INFO L231 Difference]: Finished difference. Result has 48 places, 69 transitions, 223 flow [2023-08-04 02:12:01,314 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=161, PETRI_DIFFERENCE_MINUEND_PLACES=45, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=63, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=223, PETRI_PLACES=48, PETRI_TRANSITIONS=69} [2023-08-04 02:12:01,314 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -9 predicate places. [2023-08-04 02:12:01,315 INFO L495 AbstractCegarLoop]: Abstraction has has 48 places, 69 transitions, 223 flow [2023-08-04 02:12:01,316 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 637.3333333333334) internal successors, (1912), 3 states have internal predecessors, (1912), 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 02:12:01,316 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:01,316 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, 1, 1, 1, 1, 1] [2023-08-04 02:12:01,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-08-04 02:12:01,316 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 02:12:01,317 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:01,317 INFO L85 PathProgramCache]: Analyzing trace with hash 569371831, now seen corresponding path program 1 times [2023-08-04 02:12:01,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:01,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [950384098] [2023-08-04 02:12:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:01,318 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:01,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:01,540 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-08-04 02:12:01,541 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:12:01,541 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [950384098] [2023-08-04 02:12:01,542 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [950384098] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:12:01,542 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1682828111] [2023-08-04 02:12:01,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:01,543 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:01,543 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:12:01,549 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 02:12:01,551 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 02:12:02,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:02,279 INFO L262 TraceCheckSpWp]: Trace formula consists of 590 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:12:02,284 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:12:02,326 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2023-08-04 02:12:02,326 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:12:02,331 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1682828111] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:12:02,331 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:12:02,331 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [4] total 5 [2023-08-04 02:12:02,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260712797] [2023-08-04 02:12:02,332 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:12:02,332 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:12:02,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:12:02,333 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:12:02,333 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-08-04 02:12:02,508 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 631 out of 1658 [2023-08-04 02:12:02,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 69 transitions, 223 flow. Second operand has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 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 02:12:02,511 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:12:02,511 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 631 of 1658 [2023-08-04 02:12:02,511 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:04,502 INFO L124 PetriNetUnfolderBase]: 1648/2152 cut-off events. [2023-08-04 02:12:04,503 INFO L125 PetriNetUnfolderBase]: For 7/7 co-relation queries the response was YES. [2023-08-04 02:12:04,505 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4409 conditions, 2152 events. 1648/2152 cut-off events. For 7/7 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6599 event pairs, 648 based on Foata normal form. 1/1130 useless extension candidates. Maximal degree in co-relation 4352. Up to 2101 conditions per place. [2023-08-04 02:12:04,512 INFO L140 encePairwiseOnDemand]: 1646/1658 looper letters, 57 selfloop transitions, 12 changer transitions 0/72 dead transitions. [2023-08-04 02:12:04,512 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 72 transitions, 367 flow [2023-08-04 02:12:04,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-08-04 02:12:04,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2023-08-04 02:12:04,518 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 1959 transitions. [2023-08-04 02:12:04,519 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39384800965018096 [2023-08-04 02:12:04,519 INFO L72 ComplementDD]: Start complementDD. Operand 3 states and 1959 transitions. [2023-08-04 02:12:04,519 INFO L73 IsDeterministic]: Start isDeterministic. Operand 3 states and 1959 transitions. [2023-08-04 02:12:04,521 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:04,521 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 3 states and 1959 transitions. [2023-08-04 02:12:04,525 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 4 states, 3 states have (on average 653.0) internal successors, (1959), 3 states have internal predecessors, (1959), 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 02:12:04,532 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:12:04,535 INFO L81 ComplementDD]: Finished complementDD. Result has 4 states, 4 states have (on average 1658.0) internal successors, (6632), 4 states have internal predecessors, (6632), 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 02:12:04,535 INFO L175 Difference]: Start difference. First operand has 48 places, 69 transitions, 223 flow. Second operand 3 states and 1959 transitions. [2023-08-04 02:12:04,536 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 72 transitions, 367 flow [2023-08-04 02:12:04,539 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 49 places, 72 transitions, 355 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:12:04,541 INFO L231 Difference]: Finished difference. Result has 50 places, 72 transitions, 259 flow [2023-08-04 02:12:04,541 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=211, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=259, PETRI_PLACES=50, PETRI_TRANSITIONS=72} [2023-08-04 02:12:04,542 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, -7 predicate places. [2023-08-04 02:12:04,542 INFO L495 AbstractCegarLoop]: Abstraction has has 50 places, 72 transitions, 259 flow [2023-08-04 02:12:04,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 639.3333333333334) internal successors, (1918), 3 states have internal predecessors, (1918), 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 02:12:04,544 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:04,544 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, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:12:04,557 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-08-04 02:12:04,754 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:04,755 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:12:04,755 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:04,755 INFO L85 PathProgramCache]: Analyzing trace with hash 664568008, now seen corresponding path program 1 times [2023-08-04 02:12:04,755 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:04,755 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1376511407] [2023-08-04 02:12:04,755 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:04,755 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:04,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:04,959 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 02:12:04,961 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:12:04,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1376511407] [2023-08-04 02:12:04,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1376511407] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:12:04,962 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [644513441] [2023-08-04 02:12:04,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:04,962 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:04,962 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:12:04,963 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) [2023-08-04 02:12:04,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-08-04 02:12:05,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:05,781 INFO L262 TraceCheckSpWp]: Trace formula consists of 617 conjuncts, 5 conjunts are in the unsatisfiable core [2023-08-04 02:12:05,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:12:05,815 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 02:12:05,816 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:12:05,846 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-08-04 02:12:05,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [644513441] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:12:05,846 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:12:05,847 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2023-08-04 02:12:05,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172011634] [2023-08-04 02:12:05,847 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:12:05,847 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-08-04 02:12:05,847 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:12:05,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-08-04 02:12:05,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=29, Unknown=0, NotChecked=0, Total=56 [2023-08-04 02:12:06,279 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1658 [2023-08-04 02:12:06,284 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 50 places, 72 transitions, 259 flow. Second operand has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 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 02:12:06,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:12:06,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1658 [2023-08-04 02:12:06,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:08,456 INFO L124 PetriNetUnfolderBase]: 1648/2176 cut-off events. [2023-08-04 02:12:08,457 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:12:08,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4497 conditions, 2176 events. 1648/2176 cut-off events. For 15/15 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6623 event pairs, 648 based on Foata normal form. 18/1170 useless extension candidates. Maximal degree in co-relation 4380. Up to 2095 conditions per place. [2023-08-04 02:12:08,465 INFO L140 encePairwiseOnDemand]: 1633/1658 looper letters, 45 selfloop transitions, 48 changer transitions 0/96 dead transitions. [2023-08-04 02:12:08,466 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 57 places, 96 transitions, 541 flow [2023-08-04 02:12:08,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-08-04 02:12:08,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2023-08-04 02:12:08,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 4973 transitions. [2023-08-04 02:12:08,479 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37492460796139926 [2023-08-04 02:12:08,479 INFO L72 ComplementDD]: Start complementDD. Operand 8 states and 4973 transitions. [2023-08-04 02:12:08,479 INFO L73 IsDeterministic]: Start isDeterministic. Operand 8 states and 4973 transitions. [2023-08-04 02:12:08,482 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:08,482 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 8 states and 4973 transitions. [2023-08-04 02:12:08,491 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 9 states, 8 states have (on average 621.625) internal successors, (4973), 8 states have internal predecessors, (4973), 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 02:12:08,507 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 9 states, 9 states have (on average 1658.0) internal successors, (14922), 9 states have internal predecessors, (14922), 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 02:12:08,511 INFO L81 ComplementDD]: Finished complementDD. Result has 9 states, 9 states have (on average 1658.0) internal successors, (14922), 9 states have internal predecessors, (14922), 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 02:12:08,511 INFO L175 Difference]: Start difference. First operand has 50 places, 72 transitions, 259 flow. Second operand 8 states and 4973 transitions. [2023-08-04 02:12:08,511 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 57 places, 96 transitions, 541 flow [2023-08-04 02:12:08,513 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 56 places, 96 transitions, 529 flow, removed 0 selfloop flow, removed 1 redundant places. [2023-08-04 02:12:08,514 INFO L231 Difference]: Finished difference. Result has 57 places, 96 transitions, 489 flow [2023-08-04 02:12:08,514 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=247, PETRI_DIFFERENCE_MINUEND_PLACES=49, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=489, PETRI_PLACES=57, PETRI_TRANSITIONS=96} [2023-08-04 02:12:08,515 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 0 predicate places. [2023-08-04 02:12:08,515 INFO L495 AbstractCegarLoop]: Abstraction has has 57 places, 96 transitions, 489 flow [2023-08-04 02:12:08,517 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 612.0) internal successors, (4896), 8 states have internal predecessors, (4896), 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 02:12:08,517 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:08,518 INFO L208 CegarLoopForPetriNet]: trace histogram [4, 4, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:12:08,532 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-08-04 02:12:08,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2023-08-04 02:12:08,728 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:12:08,728 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:08,728 INFO L85 PathProgramCache]: Analyzing trace with hash 180767214, now seen corresponding path program 2 times [2023-08-04 02:12:08,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:08,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1425970858] [2023-08-04 02:12:08,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:08,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:08,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:09,104 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:12:09,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:12:09,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1425970858] [2023-08-04 02:12:09,105 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1425970858] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:12:09,105 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1016158525] [2023-08-04 02:12:09,105 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-08-04 02:12:09,106 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:09,106 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:12:09,110 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) [2023-08-04 02:12:09,127 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-08-04 02:12:09,857 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-08-04 02:12:09,857 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 02:12:09,863 INFO L262 TraceCheckSpWp]: Trace formula consists of 833 conjuncts, 8 conjunts are in the unsatisfiable core [2023-08-04 02:12:09,866 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:12:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:12:09,947 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:12:10,036 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 70 trivial. 0 not checked. [2023-08-04 02:12:10,039 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1016158525] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:12:10,039 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:12:10,039 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6, 6] total 17 [2023-08-04 02:12:10,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035174215] [2023-08-04 02:12:10,040 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:12:10,041 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-08-04 02:12:10,042 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:12:10,042 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-08-04 02:12:10,043 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=156, Unknown=0, NotChecked=0, Total=272 [2023-08-04 02:12:11,071 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1658 [2023-08-04 02:12:11,076 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 96 transitions, 489 flow. Second operand has 17 states, 17 states have (on average 609.8823529411765) internal successors, (10368), 17 states have internal predecessors, (10368), 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 02:12:11,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:12:11,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1658 [2023-08-04 02:12:11,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:13,412 INFO L124 PetriNetUnfolderBase]: 1648/2209 cut-off events. [2023-08-04 02:12:13,413 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2023-08-04 02:12:13,414 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4697 conditions, 2209 events. 1648/2209 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6718 event pairs, 648 based on Foata normal form. 29/1217 useless extension candidates. Maximal degree in co-relation 4488. Up to 2095 conditions per place. [2023-08-04 02:12:13,421 INFO L140 encePairwiseOnDemand]: 1633/1658 looper letters, 45 selfloop transitions, 81 changer transitions 0/129 dead transitions. [2023-08-04 02:12:13,421 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 129 transitions, 939 flow [2023-08-04 02:12:13,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-08-04 02:12:13,422 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2023-08-04 02:12:13,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 10478 transitions. [2023-08-04 02:12:13,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37174483786276874 [2023-08-04 02:12:13,442 INFO L72 ComplementDD]: Start complementDD. Operand 17 states and 10478 transitions. [2023-08-04 02:12:13,442 INFO L73 IsDeterministic]: Start isDeterministic. Operand 17 states and 10478 transitions. [2023-08-04 02:12:13,448 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:13,449 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 17 states and 10478 transitions. [2023-08-04 02:12:13,465 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 18 states, 17 states have (on average 616.3529411764706) internal successors, (10478), 17 states have internal predecessors, (10478), 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 02:12:13,496 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 18 states, 18 states have (on average 1658.0) internal successors, (29844), 18 states have internal predecessors, (29844), 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 02:12:13,504 INFO L81 ComplementDD]: Finished complementDD. Result has 18 states, 18 states have (on average 1658.0) internal successors, (29844), 18 states have internal predecessors, (29844), 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 02:12:13,504 INFO L175 Difference]: Start difference. First operand has 57 places, 96 transitions, 489 flow. Second operand 17 states and 10478 transitions. [2023-08-04 02:12:13,504 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 129 transitions, 939 flow [2023-08-04 02:12:13,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 69 places, 129 transitions, 799 flow, removed 52 selfloop flow, removed 4 redundant places. [2023-08-04 02:12:13,510 INFO L231 Difference]: Finished difference. Result has 72 places, 129 transitions, 779 flow [2023-08-04 02:12:13,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=53, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=779, PETRI_PLACES=72, PETRI_TRANSITIONS=129} [2023-08-04 02:12:13,512 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 15 predicate places. [2023-08-04 02:12:13,513 INFO L495 AbstractCegarLoop]: Abstraction has has 72 places, 129 transitions, 779 flow [2023-08-04 02:12:13,515 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 609.8823529411765) internal successors, (10368), 17 states have internal predecessors, (10368), 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 02:12:13,515 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:13,516 INFO L208 CegarLoopForPetriNet]: trace histogram [10, 10, 10, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:12:13,526 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-08-04 02:12:13,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:13,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:12:13,727 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:13,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1911642339, now seen corresponding path program 3 times [2023-08-04 02:12:13,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:13,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1643240839] [2023-08-04 02:12:13,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:13,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:13,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:12:14,435 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-08-04 02:12:14,436 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:12:14,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1643240839] [2023-08-04 02:12:14,436 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1643240839] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:12:14,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1838892916] [2023-08-04 02:12:14,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-08-04 02:12:14,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:14,436 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:12:14,438 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) [2023-08-04 02:12:14,440 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-08-04 02:12:34,430 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2023-08-04 02:12:34,430 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-08-04 02:12:34,449 INFO L262 TraceCheckSpWp]: Trace formula consists of 1130 conjuncts, 14 conjunts are in the unsatisfiable core [2023-08-04 02:12:34,453 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:12:34,687 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-08-04 02:12:34,688 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2023-08-04 02:12:34,916 INFO L134 CoverageAnalysis]: Checked inductivity of 272 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 217 trivial. 0 not checked. [2023-08-04 02:12:34,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1838892916] provided 0 perfect and 2 imperfect interpolant sequences [2023-08-04 02:12:34,916 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-08-04 02:12:34,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 13, 13] total 35 [2023-08-04 02:12:34,917 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1659748831] [2023-08-04 02:12:34,917 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-08-04 02:12:34,917 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2023-08-04 02:12:34,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:12:34,918 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2023-08-04 02:12:34,918 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=468, Invalid=722, Unknown=0, NotChecked=0, Total=1190 [2023-08-04 02:12:37,034 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 607 out of 1658 [2023-08-04 02:12:37,043 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 129 transitions, 779 flow. Second operand has 35 states, 35 states have (on average 608.8) internal successors, (21308), 35 states have internal predecessors, (21308), 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 02:12:37,043 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:12:37,043 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 607 of 1658 [2023-08-04 02:12:37,043 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:12:39,250 INFO L124 PetriNetUnfolderBase]: 1648/2218 cut-off events. [2023-08-04 02:12:39,250 INFO L125 PetriNetUnfolderBase]: For 12/12 co-relation queries the response was YES. [2023-08-04 02:12:39,252 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4781 conditions, 2218 events. 1648/2218 cut-off events. For 12/12 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6718 event pairs, 648 based on Foata normal form. 3/1201 useless extension candidates. Maximal degree in co-relation 4679. Up to 2095 conditions per place. [2023-08-04 02:12:39,259 INFO L140 encePairwiseOnDemand]: 1634/1658 looper letters, 45 selfloop transitions, 90 changer transitions 0/138 dead transitions. [2023-08-04 02:12:39,260 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 89 places, 138 transitions, 1103 flow [2023-08-04 02:12:39,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-08-04 02:12:39,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2023-08-04 02:12:39,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 11070 transitions. [2023-08-04 02:12:39,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3709288299155609 [2023-08-04 02:12:39,282 INFO L72 ComplementDD]: Start complementDD. Operand 18 states and 11070 transitions. [2023-08-04 02:12:39,284 INFO L73 IsDeterministic]: Start isDeterministic. Operand 18 states and 11070 transitions. [2023-08-04 02:12:39,289 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:12:39,289 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 18 states and 11070 transitions. [2023-08-04 02:12:39,307 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 19 states, 18 states have (on average 615.0) internal successors, (11070), 18 states have internal predecessors, (11070), 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 02:12:39,330 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 19 states, 19 states have (on average 1658.0) internal successors, (31502), 19 states have internal predecessors, (31502), 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 02:12:39,336 INFO L81 ComplementDD]: Finished complementDD. Result has 19 states, 19 states have (on average 1658.0) internal successors, (31502), 19 states have internal predecessors, (31502), 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 02:12:39,336 INFO L175 Difference]: Start difference. First operand has 72 places, 129 transitions, 779 flow. Second operand 18 states and 11070 transitions. [2023-08-04 02:12:39,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 89 places, 138 transitions, 1103 flow [2023-08-04 02:12:39,339 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 138 transitions, 977 flow, removed 39 selfloop flow, removed 5 redundant places. [2023-08-04 02:12:39,342 INFO L231 Difference]: Finished difference. Result has 84 places, 138 transitions, 893 flow [2023-08-04 02:12:39,342 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=1658, PETRI_DIFFERENCE_MINUEND_FLOW=653, PETRI_DIFFERENCE_MINUEND_PLACES=67, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=129, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=84, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=893, PETRI_PLACES=84, PETRI_TRANSITIONS=138} [2023-08-04 02:12:39,343 INFO L281 CegarLoopForPetriNet]: 57 programPoint places, 27 predicate places. [2023-08-04 02:12:39,343 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 138 transitions, 893 flow [2023-08-04 02:12:39,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 35 states have (on average 608.8) internal successors, (21308), 35 states have internal predecessors, (21308), 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 02:12:39,346 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:12:39,347 INFO L208 CegarLoopForPetriNet]: trace histogram [13, 13, 13, 5, 5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:12:39,373 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2023-08-04 02:12:39,573 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:12:39,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:12:39,574 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:12:39,574 INFO L85 PathProgramCache]: Analyzing trace with hash -1662447253, now seen corresponding path program 4 times [2023-08-04 02:12:39,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:12:39,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [599311175] [2023-08-04 02:12:39,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:12:39,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:12:40,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:12:40,083 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:12:40,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:12:40,499 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:12:40,499 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:12:40,503 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:12:40,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:12:40,505 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:12:40,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-08-04 02:12:40,506 INFO L445 BasicCegarLoop]: Path program histogram: [4, 1, 1, 1] [2023-08-04 02:12:40,508 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:12:40,508 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:12:40,508 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:12:40,948 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 02:12:40,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:42,683 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 02:12:42,683 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:12:42,763 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 46789 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3675. Up to 192 conditions per place. [2023-08-04 02:12:42,763 INFO L82 GeneralOperation]: Start removeDead. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:42,818 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:42,818 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:12:42,818 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:42,818 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:42,819 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 831 places, 951 transitions, 1992 flow [2023-08-04 02:12:44,240 INFO L124 PetriNetUnfolderBase]: 1142/5766 cut-off events. [2023-08-04 02:12:44,240 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:12:44,381 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6440 conditions, 5766 events. 1142/5766 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 116. Compared 46789 event pairs, 22 based on Foata normal form. 0/4868 useless extension candidates. Maximal degree in co-relation 3675. Up to 192 conditions per place. [2023-08-04 02:12:44,701 INFO L119 LiptonReduction]: Number of co-enabled transitions 148500 [2023-08-04 02:15:02,809 INFO L134 LiptonReduction]: Checked pairs total: 195425 [2023-08-04 02:15:02,810 INFO L136 LiptonReduction]: Total number of compositions: 1102 [2023-08-04 02:15:02,812 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:15:02,812 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;@415c43dd, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:15:02,812 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:15:02,913 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:15:02,913 INFO L124 PetriNetUnfolderBase]: 54/176 cut-off events. [2023-08-04 02:15:02,913 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:15:02,913 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:15:02,913 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:15:02,914 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 02:15:02,914 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:15:02,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1432841853, now seen corresponding path program 1 times [2023-08-04 02:15:02,914 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:15:02,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2139112845] [2023-08-04 02:15:02,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:15:02,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:15:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:15:03,029 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 02:15:03,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:15:03,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2139112845] [2023-08-04 02:15:03,029 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2139112845] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:15:03,029 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:15:03,029 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-08-04 02:15:03,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111925290] [2023-08-04 02:15:03,030 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:15:03,030 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:15:03,030 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:15:03,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:15:03,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:15:03,190 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 757 out of 2053 [2023-08-04 02:15:03,191 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 78 places, 119 transitions, 328 flow. Second operand has 3 states, 3 states have (on average 762.6666666666666) internal successors, (2288), 3 states have internal predecessors, (2288), 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 02:15:03,192 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:15:03,192 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 757 of 2053 [2023-08-04 02:15:03,192 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand