/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-prod-cons-eq.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 03:13:35,739 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 03:13:35,811 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 03:13:35,816 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 03:13:35,816 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 03:13:35,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 03:13:35,817 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 03:13:35,852 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 03:13:35,853 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 03:13:35,856 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 03:13:35,857 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 03:13:35,858 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 03:13:35,858 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 03:13:35,859 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 03:13:35,859 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 03:13:35,860 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 03:13:35,860 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 03:13:35,860 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 03:13:35,860 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 03:13:35,861 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 03:13:35,861 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 03:13:35,861 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 03:13:35,861 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 03:13:35,862 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 03:13:35,862 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 03:13:35,862 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 03:13:35,862 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 03:13:35,863 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 03:13:35,863 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 03:13:35,864 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 03:13:35,864 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:13:35,865 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 03:13:35,865 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 03:13:35,865 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 03:13:35,865 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 03:13:35,865 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 03:13:35,866 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 03:13:35,866 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 03:13:35,866 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 03:13:35,866 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 03:13:35,866 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 03:13:35,867 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 03:13:36,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 03:13:36,110 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 03:13:36,112 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 03:13:36,113 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 03:13:36,113 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 03:13:36,115 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-prod-cons-eq.wvr_bound2.c [2023-08-04 03:13:37,354 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 03:13:37,566 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 03:13:37,567 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_popl20-prod-cons-eq.wvr_bound2.c [2023-08-04 03:13:37,577 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e54bb786/d283a4a44b9b4c0193174bdd3ae3a102/FLAG8c50c3415 [2023-08-04 03:13:37,593 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e54bb786/d283a4a44b9b4c0193174bdd3ae3a102 [2023-08-04 03:13:37,595 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 03:13:37,596 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 03:13:37,597 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 03:13:37,597 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 03:13:37,603 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 03:13:37,603 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,605 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@38594b85 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37, skipping insertion in model container [2023-08-04 03:13:37,605 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,642 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 03:13:37,795 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-prod-cons-eq.wvr_bound2.c[4623,4636] [2023-08-04 03:13:37,801 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:13:37,809 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 03:13:37,839 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-prod-cons-eq.wvr_bound2.c[4623,4636] [2023-08-04 03:13:37,844 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 03:13:37,856 WARN L667 CHandler]: The function __VERIFIER_atomic_begin is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:13:37,856 WARN L667 CHandler]: The function __VERIFIER_atomic_end is called, but not defined or handled by StandardFunctionHandler. [2023-08-04 03:13:37,862 INFO L206 MainTranslator]: Completed translation [2023-08-04 03:13:37,862 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37 WrapperNode [2023-08-04 03:13:37,863 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 03:13:37,863 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 03:13:37,864 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 03:13:37,864 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 03:13:37,869 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,879 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,914 INFO L138 Inliner]: procedures = 28, calls = 80, calls flagged for inlining = 26, calls inlined = 32, statements flattened = 454 [2023-08-04 03:13:37,914 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 03:13:37,915 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 03:13:37,915 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 03:13:37,915 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 03:13:37,923 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,923 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,929 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,929 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,945 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,958 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,961 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,963 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,967 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 03:13:37,968 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 03:13:37,968 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 03:13:37,968 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 03:13:37,969 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (1/1) ... [2023-08-04 03:13:37,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 03:13:38,018 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:13:38,036 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-08-04 03:13:38,054 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-08-04 03:13:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 03:13:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-08-04 03:13:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 03:13:38,073 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 03:13:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 03:13:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-08-04 03:13:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 03:13:38,074 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 03:13:38,074 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 03:13:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 03:13:38,076 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 03:13:38,076 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 03:13:38,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 03:13:38,077 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 03:13:38,079 WARN L210 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2023-08-04 03:13:38,230 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 03:13:38,231 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 03:13:38,770 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 03:13:38,865 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 03:13:38,865 INFO L302 CfgBuilder]: Removed 15 assume(true) statements. [2023-08-04 03:13:38,868 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:13:38 BoogieIcfgContainer [2023-08-04 03:13:38,869 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 03:13:38,871 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 03:13:38,872 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 03:13:38,875 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 03:13:38,876 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 03:13:37" (1/3) ... [2023-08-04 03:13:38,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2825352e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:13:38, skipping insertion in model container [2023-08-04 03:13:38,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 03:13:37" (2/3) ... [2023-08-04 03:13:38,877 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2825352e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 03:13:38, skipping insertion in model container [2023-08-04 03:13:38,877 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 03:13:38" (3/3) ... [2023-08-04 03:13:38,878 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_popl20-prod-cons-eq.wvr_bound2.c [2023-08-04 03:13:38,886 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 03:13:38,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 03:13:38,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 03:13:38,895 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 03:13:39,018 INFO L144 ThreadInstanceAdder]: Constructed 9 joinOtherThreadTransitions. [2023-08-04 03:13:39,075 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,378 INFO L124 PetriNetUnfolderBase]: 141/1030 cut-off events. [2023-08-04 03:13:39,378 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:13:39,392 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 1030 events. 141/1030 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4827 event pairs, 0 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 659. Up to 16 conditions per place. [2023-08-04 03:13:39,393 INFO L82 GeneralOperation]: Start removeDead. Operand has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,405 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,408 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:13:39,421 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,424 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 390 places, 435 transitions, 912 flow [2023-08-04 03:13:39,571 INFO L124 PetriNetUnfolderBase]: 141/1030 cut-off events. [2023-08-04 03:13:39,572 INFO L125 PetriNetUnfolderBase]: For 36/36 co-relation queries the response was YES. [2023-08-04 03:13:39,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1091 conditions, 1030 events. 141/1030 cut-off events. For 36/36 co-relation queries the response was YES. Maximal size of possible extension queue 25. Compared 4827 event pairs, 0 based on Foata normal form. 0/879 useless extension candidates. Maximal degree in co-relation 659. Up to 16 conditions per place. [2023-08-04 03:13:39,600 INFO L119 LiptonReduction]: Number of co-enabled transitions 13926 [2023-08-04 03:13:51,037 INFO L134 LiptonReduction]: Checked pairs total: 25096 [2023-08-04 03:13:51,038 INFO L136 LiptonReduction]: Total number of compositions: 454 [2023-08-04 03:13:51,050 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:13:51,056 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;@1c994168, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:13:51,056 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:13:51,063 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:13:51,063 INFO L124 PetriNetUnfolderBase]: 8/45 cut-off events. [2023-08-04 03:13:51,063 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 03:13:51,064 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:13:51,064 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:13:51,065 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 03:13:51,069 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:13:51,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1124432700, now seen corresponding path program 1 times [2023-08-04 03:13:51,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:13:51,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1463804771] [2023-08-04 03:13:51,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:13:51,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:13:51,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:13:51,337 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 03:13:51,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 03:13:51,478 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 03:13:51,479 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 03:13:51,480 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 3 remaining) [2023-08-04 03:13:51,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 3 remaining) [2023-08-04 03:13:51,482 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 3 remaining) [2023-08-04 03:13:51,482 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 03:13:51,483 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 03:13:51,487 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN (1/2) [2023-08-04 03:13:51,488 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 03:13:51,488 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 03:13:51,543 INFO L144 ThreadInstanceAdder]: Constructed 18 joinOtherThreadTransitions. [2023-08-04 03:13:51,548 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:52,955 INFO L124 PetriNetUnfolderBase]: 1002/5120 cut-off events. [2023-08-04 03:13:52,955 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:13:53,008 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 5120 events. 1002/5120 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42742 event pairs, 33 based on Foata normal form. 0/4362 useless extension candidates. Maximal degree in co-relation 3185. Up to 192 conditions per place. [2023-08-04 03:13:53,009 INFO L82 GeneralOperation]: Start removeDead. Operand has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:53,046 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:53,046 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 03:13:53,047 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:53,047 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:53,047 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 465 places, 525 transitions, 1140 flow [2023-08-04 03:13:54,073 INFO L124 PetriNetUnfolderBase]: 1002/5120 cut-off events. [2023-08-04 03:13:54,073 INFO L125 PetriNetUnfolderBase]: For 602/602 co-relation queries the response was YES. [2023-08-04 03:13:54,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5794 conditions, 5120 events. 1002/5120 cut-off events. For 602/602 co-relation queries the response was YES. Maximal size of possible extension queue 107. Compared 42742 event pairs, 33 based on Foata normal form. 0/4362 useless extension candidates. Maximal degree in co-relation 3185. Up to 192 conditions per place. [2023-08-04 03:13:54,326 INFO L119 LiptonReduction]: Number of co-enabled transitions 43152 [2023-08-04 03:14:06,847 INFO L134 LiptonReduction]: Checked pairs total: 148782 [2023-08-04 03:14:06,847 INFO L136 LiptonReduction]: Total number of compositions: 517 [2023-08-04 03:14:06,849 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 03:14:06,850 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;@1c994168, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 03:14:06,850 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2023-08-04 03:14:06,864 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 03:14:06,864 INFO L124 PetriNetUnfolderBase]: 24/160 cut-off events. [2023-08-04 03:14:06,864 INFO L125 PetriNetUnfolderBase]: For 15/15 co-relation queries the response was YES. [2023-08-04 03:14:06,865 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 03:14:06,865 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-08-04 03:14:06,865 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2023-08-04 03:14:06,865 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 03:14:06,866 INFO L85 PathProgramCache]: Analyzing trace with hash -1490716204, now seen corresponding path program 1 times [2023-08-04 03:14:06,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 03:14:06,866 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [175293220] [2023-08-04 03:14:06,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:14:06,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 03:14:06,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:14:07,048 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 03:14:07,048 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 03:14:07,048 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [175293220] [2023-08-04 03:14:07,049 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [175293220] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 03:14:07,049 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092388718] [2023-08-04 03:14:07,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 03:14:07,050 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 03:14:07,050 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 03:14:07,053 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-08-04 03:14:07,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-08-04 03:14:07,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 03:14:07,215 INFO L262 TraceCheckSpWp]: Trace formula consists of 313 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 03:14:07,218 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 03:14:07,264 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 03:14:07,264 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 03:14:07,264 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092388718] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 03:14:07,264 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 03:14:07,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 6 [2023-08-04 03:14:07,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085344946] [2023-08-04 03:14:07,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 03:14:07,274 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 03:14:07,280 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 03:14:07,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 03:14:07,297 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 03:14:07,317 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 448 out of 1042 [2023-08-04 03:14:07,324 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 128 transitions, 346 flow. Second operand has 5 states, 5 states have (on average 450.6) internal successors, (2253), 5 states have internal predecessors, (2253), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-08-04 03:14:07,325 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 03:14:07,325 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 448 of 1042 [2023-08-04 03:14:07,326 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand