/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -s /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf --traceabstraction.order.of.the.error.locations.to.be.checked INSUFFICIENT_FIRST -tc /storage/repos/CAV22/benchmarks/AutomizerCInline.xml -i /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-commit-1.wvr-bad_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 02:44:37,174 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 02:44:37,249 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 02:44:37,256 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 02:44:37,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 02:44:37,257 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 02:44:37,258 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 02:44:37,290 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 02:44:37,291 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 02:44:37,291 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 02:44:37,292 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 02:44:37,292 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 02:44:37,295 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 02:44:37,299 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 02:44:37,299 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 02:44:37,299 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 02:44:37,300 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 02:44:37,301 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 02:44:37,301 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 02:44:37,301 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 02:44:37,301 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 02:44:37,302 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 02:44:37,302 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 02:44:37,302 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 02:44:37,303 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 02:44:37,303 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 02:44:37,303 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 02:44:37,304 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 02:44:37,304 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 02:44:37,304 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 02:44:37,305 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:44:37,305 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 02:44:37,306 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 02:44:37,307 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 02:44:37,307 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 02:44:37,307 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 02:44:37,530 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 02:44:37,553 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 02:44:37,556 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 02:44:37,556 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 02:44:37,560 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 02:44:37,561 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-commit-1.wvr-bad_bound2.c [2023-08-04 02:44:38,705 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 02:44:38,904 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 02:44:38,904 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-commit-1.wvr-bad_bound2.c [2023-08-04 02:44:38,913 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdaf90187/636a9891b61a457dbacdf5327812a324/FLAG06a0fad4b [2023-08-04 02:44:39,271 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/cdaf90187/636a9891b61a457dbacdf5327812a324 [2023-08-04 02:44:39,274 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 02:44:39,275 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 02:44:39,276 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 02:44:39,276 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 02:44:39,281 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 02:44:39,282 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,282 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7efcc475 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39, skipping insertion in model container [2023-08-04 02:44:39,283 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,310 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 02:44:39,464 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-commit-1.wvr-bad_bound2.c[5404,5417] [2023-08-04 02:44:39,468 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:44:39,475 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 02:44:39,502 WARN L240 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-bad-commit-1.wvr-bad_bound2.c[5404,5417] [2023-08-04 02:44:39,505 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 02:44:39,511 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:44:39,511 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 02:44:39,516 INFO L206 MainTranslator]: Completed translation [2023-08-04 02:44:39,517 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39 WrapperNode [2023-08-04 02:44:39,517 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 02:44:39,518 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 02:44:39,518 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 02:44:39,518 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 02:44:39,523 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,531 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,559 INFO L138 Inliner]: procedures = 25, calls = 68, calls flagged for inlining = 20, calls inlined = 24, statements flattened = 398 [2023-08-04 02:44:39,559 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 02:44:39,560 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 02:44:39,560 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 02:44:39,560 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 02:44:39,567 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,568 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,572 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,572 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,594 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,599 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,601 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,602 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,619 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 02:44:39,620 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 02:44:39,620 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 02:44:39,620 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 02:44:39,621 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (1/1) ... [2023-08-04 02:44:39,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 02:44:39,638 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:44:39,654 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 02:44:39,673 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 02:44:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 02:44:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 02:44:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 02:44:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 02:44:39,687 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 02:44:39,687 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 02:44:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 02:44:39,688 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 02:44:39,688 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 02:44:39,689 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 02:44:39,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 02:44:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 02:44:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 02:44:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 02:44:39,690 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 02:44:39,690 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 02:44:39,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 02:44:39,692 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 02:44:39,830 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 02:44:39,832 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 02:44:40,373 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 02:44:40,504 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 02:44:40,504 INFO L302 CfgBuilder]: Removed 12 assume(true) statements. [2023-08-04 02:44:40,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:44:40 BoogieIcfgContainer [2023-08-04 02:44:40,506 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 02:44:40,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 02:44:40,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 02:44:40,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 02:44:40,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 02:44:39" (1/3) ... [2023-08-04 02:44:40,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141fbecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:44:40, skipping insertion in model container [2023-08-04 02:44:40,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 02:44:39" (2/3) ... [2023-08-04 02:44:40,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@141fbecc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 02:44:40, skipping insertion in model container [2023-08-04 02:44:40,512 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 02:44:40" (3/3) ... [2023-08-04 02:44:40,513 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-bad-commit-1.wvr-bad_bound2.c [2023-08-04 02:44:40,519 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 02:44:40,527 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 02:44:40,527 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 02:44:40,527 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 02:44:40,581 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 02:44:40,612 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,810 INFO L124 PetriNetUnfolderBase]: 124/799 cut-off events. [2023-08-04 02:44:40,810 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:44:40,822 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 799 events. 124/799 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3426 event pairs, 0 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 482. Up to 16 conditions per place. [2023-08-04 02:44:40,823 INFO L82 GeneralOperation]: Start removeDead. Operand has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,835 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,838 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:44:40,849 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,852 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 280 places, 315 transitions, 672 flow [2023-08-04 02:44:40,968 INFO L124 PetriNetUnfolderBase]: 124/799 cut-off events. [2023-08-04 02:44:40,969 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 02:44:40,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 799 events. 124/799 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 21. Compared 3426 event pairs, 0 based on Foata normal form. 0/665 useless extension candidates. Maximal degree in co-relation 482. Up to 16 conditions per place. [2023-08-04 02:44:40,984 INFO L119 LiptonReduction]: Number of co-enabled transitions 9072 [2023-08-04 02:44:50,093 INFO L134 LiptonReduction]: Checked pairs total: 11306 [2023-08-04 02:44:50,093 INFO L136 LiptonReduction]: Total number of compositions: 317 [2023-08-04 02:44:50,104 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:44:50,110 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;@56b9e5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:44:50,110 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:44:50,122 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:44:50,122 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2023-08-04 02:44:50,122 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 02:44:50,122 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:44:50,123 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:44:50,123 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:44:50,127 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:44:50,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1562465370, now seen corresponding path program 1 times [2023-08-04 02:44:50,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:44:50,133 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1995074028] [2023-08-04 02:44:50,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:44:50,133 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:44:50,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:44:50,277 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 02:44:50,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 02:44:50,370 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 02:44:50,372 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 02:44:50,372 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 02:44:50,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 02:44:50,374 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 02:44:50,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 02:44:50,376 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 02:44:50,382 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 02:44:50,383 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 02:44:50,383 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 02:44:50,442 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 02:44:50,450 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:51,235 INFO L124 PetriNetUnfolderBase]: 954/4370 cut-off events. [2023-08-04 02:44:51,236 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:44:51,296 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4370 events. 954/4370 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33703 event pairs, 15 based on Foata normal form. 0/3660 useless extension candidates. Maximal degree in co-relation 2642. Up to 192 conditions per place. [2023-08-04 02:44:51,297 INFO L82 GeneralOperation]: Start removeDead. Operand has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:51,397 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:51,397 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 02:44:51,398 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:51,398 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:51,398 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 323 places, 375 transitions, 840 flow [2023-08-04 02:44:52,024 INFO L124 PetriNetUnfolderBase]: 954/4370 cut-off events. [2023-08-04 02:44:52,025 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 02:44:52,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5044 conditions, 4370 events. 954/4370 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 88. Compared 33703 event pairs, 15 based on Foata normal form. 0/3660 useless extension candidates. Maximal degree in co-relation 2642. Up to 192 conditions per place. [2023-08-04 02:44:52,181 INFO L119 LiptonReduction]: Number of co-enabled transitions 24792 [2023-08-04 02:44:59,814 INFO L134 LiptonReduction]: Checked pairs total: 114695 [2023-08-04 02:44:59,814 INFO L136 LiptonReduction]: Total number of compositions: 324 [2023-08-04 02:44:59,816 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 02:44:59,817 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;@56b9e5d, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 02:44:59,817 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 02:44:59,829 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 02:44:59,830 INFO L124 PetriNetUnfolderBase]: 39/168 cut-off events. [2023-08-04 02:44:59,830 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 02:44:59,830 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:44:59,830 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:44:59,830 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:44:59,831 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:44:59,831 INFO L85 PathProgramCache]: Analyzing trace with hash 2009582336, now seen corresponding path program 1 times [2023-08-04 02:44:59,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:44:59,831 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973469754] [2023-08-04 02:44:59,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:44:59,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:44:59,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:45:00,086 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:45:00,086 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:45:00,086 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973469754] [2023-08-04 02:45:00,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973469754] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 02:45:00,087 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1639247267] [2023-08-04 02:45:00,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:45:00,088 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:45:00,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 02:45:00,093 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 02:45:00,096 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 02:45:00,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:45:00,209 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 02:45:00,210 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 02:45:00,255 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-08-04 02:45:00,255 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 02:45:00,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1639247267] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:45:00,256 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 02:45:00,256 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 02:45:00,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1310966443] [2023-08-04 02:45:00,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:45:00,263 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 02:45:00,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:45:00,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 02:45:00,288 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 02:45:00,312 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 307 out of 699 [2023-08-04 02:45:00,318 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 83 places, 113 transitions, 316 flow. Second operand has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 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 02:45:00,318 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:45:00,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 307 of 699 [2023-08-04 02:45:00,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2023-08-04 02:46:48,449 INFO L124 PetriNetUnfolderBase]: 1234822/1470717 cut-off events. [2023-08-04 02:46:48,450 INFO L125 PetriNetUnfolderBase]: For 110917/110917 co-relation queries the response was YES. [2023-08-04 02:46:55,563 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2915813 conditions, 1470717 events. 1234822/1470717 cut-off events. For 110917/110917 co-relation queries the response was YES. Maximal size of possible extension queue 21564. Compared 7483789 event pairs, 404918 based on Foata normal form. 0/964740 useless extension candidates. Maximal degree in co-relation 776939. Up to 1380578 conditions per place. [2023-08-04 02:47:02,640 INFO L140 encePairwiseOnDemand]: 694/699 looper letters, 103 selfloop transitions, 5 changer transitions 0/136 dead transitions. [2023-08-04 02:47:02,640 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 136 transitions, 574 flow [2023-08-04 02:47:02,641 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-08-04 02:47:02,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2023-08-04 02:47:02,686 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 1645 transitions. [2023-08-04 02:47:02,692 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.47067238912732473 [2023-08-04 02:47:02,692 INFO L72 ComplementDD]: Start complementDD. Operand 5 states and 1645 transitions. [2023-08-04 02:47:02,693 INFO L73 IsDeterministic]: Start isDeterministic. Operand 5 states and 1645 transitions. [2023-08-04 02:47:02,697 INFO L80 IsDeterministic]: Finished isDeterministic. Operand is deterministic. [2023-08-04 02:47:02,699 INFO L117 ReachableStatesCopy]: Start reachableStatesCopy. Operand 5 states and 1645 transitions. [2023-08-04 02:47:02,707 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends has 6 states, 5 states have (on average 329.0) internal successors, (1645), 5 states have internal predecessors, (1645), 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 02:47:02,719 INFO L131 ReachableStatesCopy]: Finished reachableStatesCopy Result has 6 states, 6 states have (on average 699.0) internal successors, (4194), 6 states have internal predecessors, (4194), 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 02:47:02,721 INFO L81 ComplementDD]: Finished complementDD. Result has 6 states, 6 states have (on average 699.0) internal successors, (4194), 6 states have internal predecessors, (4194), 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 02:47:02,722 INFO L175 Difference]: Start difference. First operand has 83 places, 113 transitions, 316 flow. Second operand 5 states and 1645 transitions. [2023-08-04 02:47:02,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 136 transitions, 574 flow [2023-08-04 02:47:02,869 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 136 transitions, 566 flow, removed 0 selfloop flow, removed 2 redundant places. [2023-08-04 02:47:02,872 INFO L231 Difference]: Finished difference. Result has 84 places, 114 transitions, 323 flow [2023-08-04 02:47:02,891 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=699, PETRI_DIFFERENCE_MINUEND_FLOW=300, PETRI_DIFFERENCE_MINUEND_PLACES=79, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=111, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=108, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=323, PETRI_PLACES=84, PETRI_TRANSITIONS=114} [2023-08-04 02:47:02,893 INFO L281 CegarLoopForPetriNet]: 83 programPoint places, 1 predicate places. [2023-08-04 02:47:02,894 INFO L495 AbstractCegarLoop]: Abstraction has has 84 places, 114 transitions, 323 flow [2023-08-04 02:47:02,895 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 309.2) internal successors, (1546), 5 states have internal predecessors, (1546), 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 02:47:02,895 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 02:47:02,895 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 02:47:02,917 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 02:47:03,096 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 02:47:03,096 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 02:47:03,097 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 02:47:03,097 INFO L85 PathProgramCache]: Analyzing trace with hash -597888234, now seen corresponding path program 1 times [2023-08-04 02:47:03,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 02:47:03,098 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [68183555] [2023-08-04 02:47:03,098 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 02:47:03,098 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 02:47:03,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 02:47:03,261 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 02:47:03,261 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 02:47:03,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [68183555] [2023-08-04 02:47:03,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [68183555] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 02:47:03,262 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-08-04 02:47:03,262 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-08-04 02:47:03,262 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063834193] [2023-08-04 02:47:03,262 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 02:47:03,262 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-08-04 02:47:03,263 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 02:47:03,263 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-08-04 02:47:03,263 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-08-04 02:47:03,273 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 308 out of 699 [2023-08-04 02:47:03,274 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 84 places, 114 transitions, 323 flow. Second operand has 3 states, 3 states have (on average 311.0) internal successors, (933), 3 states have internal predecessors, (933), 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 02:47:03,275 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 02:47:03,275 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 308 of 699 [2023-08-04 02:47:03,275 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand