/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_bench-exp3x3-opt.wvr_bound2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.3-dev-19404b3-m [2023-08-04 01:54:58,694 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-08-04 01:54:58,777 INFO L114 SettingsManager]: Loading settings from /storage/repos/CAV22/benchmarks/svcomp-Reach-32bit-Automizer_Default.epf [2023-08-04 01:54:58,785 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-08-04 01:54:58,785 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-08-04 01:54:58,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Translation Mode: [2023-08-04 01:54:58,786 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.Checked method. Library mode if empty. [2023-08-04 01:54:58,812 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-08-04 01:54:58,813 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-08-04 01:54:58,816 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-08-04 01:54:58,817 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-08-04 01:54:58,817 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-08-04 01:54:58,818 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-08-04 01:54:58,819 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-08-04 01:54:58,820 INFO L153 SettingsManager]: * Use SBE=true [2023-08-04 01:54:58,820 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-08-04 01:54:58,820 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-08-04 01:54:58,820 INFO L153 SettingsManager]: * sizeof long=4 [2023-08-04 01:54:58,820 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-08-04 01:54:58,821 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-08-04 01:54:58,821 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-08-04 01:54:58,821 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-08-04 01:54:58,821 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-08-04 01:54:58,822 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-08-04 01:54:58,823 INFO L153 SettingsManager]: * sizeof long double=12 [2023-08-04 01:54:58,823 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-08-04 01:54:58,823 INFO L153 SettingsManager]: * Use constant arrays=true [2023-08-04 01:54:58,824 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-08-04 01:54:58,824 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-08-04 01:54:58,824 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-08-04 01:54:58,825 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:54:58,825 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-08-04 01:54:58,825 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-08-04 01:54:58,825 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2023-08-04 01:54:58,825 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-08-04 01:54:58,826 INFO L153 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-08-04 01:54:58,827 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Order of the error locations to be checked -> INSUFFICIENT_FIRST [2023-08-04 01:54:59,113 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-08-04 01:54:59,155 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-08-04 01:54:59,158 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-08-04 01:54:59,159 INFO L270 PluginConnector]: Initializing CDTParser... [2023-08-04 01:54:59,159 INFO L274 PluginConnector]: CDTParser initialized [2023-08-04 01:54:59,160 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp3x3-opt.wvr_bound2.c [2023-08-04 01:55:00,554 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-08-04 01:55:00,757 INFO L384 CDTParser]: Found 1 translation units. [2023-08-04 01:55:00,758 INFO L180 CDTParser]: Scanning /storage/repos/CAV22/benchmarks/increased_bounds/weaver_bench-exp3x3-opt.wvr_bound2.c [2023-08-04 01:55:00,766 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3237577b8/63a9076f136440e6874b41d2c24a0ae1/FLAG0048e8e65 [2023-08-04 01:55:00,783 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3237577b8/63a9076f136440e6874b41d2c24a0ae1 [2023-08-04 01:55:00,788 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-08-04 01:55:00,789 INFO L133 ToolchainWalker]: Walking toolchain with 5 elements. [2023-08-04 01:55:00,792 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-08-04 01:55:00,792 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-08-04 01:55:00,795 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-08-04 01:55:00,795 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:55:00" (1/1) ... [2023-08-04 01:55:00,796 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@66c0de37 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:00, skipping insertion in model container [2023-08-04 01:55:00,796 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.08 01:55:00" (1/1) ... [2023-08-04 01:55:00,826 INFO L176 MainTranslator]: Built tables and reachable declarations [2023-08-04 01:55:01,017 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_bench-exp3x3-opt.wvr_bound2.c[3312,3325] [2023-08-04 01:55:01,019 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:55:01,027 INFO L201 MainTranslator]: Completed pre-run [2023-08-04 01:55:01,054 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_bench-exp3x3-opt.wvr_bound2.c[3312,3325] [2023-08-04 01:55:01,056 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-08-04 01:55:01,070 INFO L206 MainTranslator]: Completed translation [2023-08-04 01:55:01,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01 WrapperNode [2023-08-04 01:55:01,070 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-08-04 01:55:01,071 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-08-04 01:55:01,071 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-08-04 01:55:01,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-08-04 01:55:01,078 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,086 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,110 INFO L138 Inliner]: procedures = 25, calls = 44, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 228 [2023-08-04 01:55:01,111 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-08-04 01:55:01,112 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-08-04 01:55:01,112 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-08-04 01:55:01,112 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-08-04 01:55:01,123 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,123 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,129 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,129 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,153 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,158 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,160 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,162 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,165 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-08-04 01:55:01,166 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-08-04 01:55:01,166 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-08-04 01:55:01,166 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-08-04 01:55:01,167 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (1/1) ... [2023-08-04 01:55:01,183 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-08-04 01:55:01,194 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:55:01,210 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 01:55:01,237 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 01:55:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-08-04 01:55:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-08-04 01:55:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-08-04 01:55:01,255 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-08-04 01:55:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2023-08-04 01:55:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2023-08-04 01:55:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2023-08-04 01:55:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2023-08-04 01:55:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2023-08-04 01:55:01,256 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2023-08-04 01:55:01,256 INFO L130 BoogieDeclarations]: Found specification of procedure thread4 [2023-08-04 01:55:01,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread4 [2023-08-04 01:55:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-08-04 01:55:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread5 [2023-08-04 01:55:01,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread5 [2023-08-04 01:55:01,258 INFO L130 BoogieDeclarations]: Found specification of procedure thread6 [2023-08-04 01:55:01,258 INFO L138 BoogieDeclarations]: Found implementation of procedure thread6 [2023-08-04 01:55:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-08-04 01:55:01,259 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-08-04 01:55:01,259 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-08-04 01:55:01,260 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 01:55:01,393 INFO L236 CfgBuilder]: Building ICFG [2023-08-04 01:55:01,396 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2023-08-04 01:55:01,750 INFO L277 CfgBuilder]: Performing block encoding [2023-08-04 01:55:01,758 INFO L297 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-08-04 01:55:01,758 INFO L302 CfgBuilder]: Removed 18 assume(true) statements. [2023-08-04 01:55:01,760 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:55:01 BoogieIcfgContainer [2023-08-04 01:55:01,760 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-08-04 01:55:01,762 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-08-04 01:55:01,762 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-08-04 01:55:01,768 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-08-04 01:55:01,769 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.08 01:55:00" (1/3) ... [2023-08-04 01:55:01,770 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d5ab90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:55:01, skipping insertion in model container [2023-08-04 01:55:01,770 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.08 01:55:01" (2/3) ... [2023-08-04 01:55:01,771 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@31d5ab90 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.08 01:55:01, skipping insertion in model container [2023-08-04 01:55:01,771 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.08 01:55:01" (3/3) ... [2023-08-04 01:55:01,785 INFO L112 eAbstractionObserver]: Analyzing ICFG weaver_bench-exp3x3-opt.wvr_bound2.c [2023-08-04 01:55:01,793 WARN L145 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2023-08-04 01:55:01,802 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-08-04 01:55:01,803 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-08-04 01:55:01,803 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2023-08-04 01:55:01,944 INFO L144 ThreadInstanceAdder]: Constructed 36 joinOtherThreadTransitions. [2023-08-04 01:55:01,991 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:03,151 INFO L124 PetriNetUnfolderBase]: 1853/7807 cut-off events. [2023-08-04 01:55:03,152 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2023-08-04 01:55:03,217 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9155 conditions, 7807 events. 1853/7807 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 74612 event pairs, 0 based on Foata normal form. 0/6532 useless extension candidates. Maximal degree in co-relation 4468. Up to 193 conditions per place. [2023-08-04 01:55:03,217 INFO L82 GeneralOperation]: Start removeDead. Operand has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:03,279 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:03,282 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:55:03,294 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:03,298 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:03,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 234 places, 283 transitions, 704 flow [2023-08-04 01:55:04,251 INFO L124 PetriNetUnfolderBase]: 1853/7807 cut-off events. [2023-08-04 01:55:04,252 INFO L125 PetriNetUnfolderBase]: For 1152/1152 co-relation queries the response was YES. [2023-08-04 01:55:04,291 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9155 conditions, 7807 events. 1853/7807 cut-off events. For 1152/1152 co-relation queries the response was YES. Maximal size of possible extension queue 182. Compared 74612 event pairs, 0 based on Foata normal form. 0/6532 useless extension candidates. Maximal degree in co-relation 4468. Up to 193 conditions per place. [2023-08-04 01:55:04,452 INFO L119 LiptonReduction]: Number of co-enabled transitions 12240 [2023-08-04 01:55:10,257 INFO L134 LiptonReduction]: Checked pairs total: 44499 [2023-08-04 01:55:10,257 INFO L136 LiptonReduction]: Total number of compositions: 202 [2023-08-04 01:55:10,271 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:55:10,276 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;@35f4c030, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:55:10,277 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 01:55:10,281 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:55:10,281 INFO L124 PetriNetUnfolderBase]: 4/31 cut-off events. [2023-08-04 01:55:10,281 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2023-08-04 01:55:10,282 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:55:10,282 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1] [2023-08-04 01:55:10,283 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-04 01:55:10,287 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:55:10,287 INFO L85 PathProgramCache]: Analyzing trace with hash -1278057904, now seen corresponding path program 1 times [2023-08-04 01:55:10,294 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:55:10,295 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [440204983] [2023-08-04 01:55:10,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:55:10,295 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:55:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:55:10,423 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2023-08-04 01:55:10,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2023-08-04 01:55:10,484 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2023-08-04 01:55:10,486 INFO L360 BasicCegarLoop]: Counterexample is feasible [2023-08-04 01:55:10,487 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2023-08-04 01:55:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 6 remaining) [2023-08-04 01:55:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 6 remaining) [2023-08-04 01:55:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 6 remaining) [2023-08-04 01:55:10,489 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 6 remaining) [2023-08-04 01:55:10,490 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 6 remaining) [2023-08-04 01:55:10,490 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-08-04 01:55:10,491 INFO L445 BasicCegarLoop]: Path program histogram: [1] [2023-08-04 01:55:10,497 INFO L307 ceAbstractionStarter]: Result for error location InUseError was UNSAFE,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN,UNKNOWN (1/2) [2023-08-04 01:55:10,498 WARN L233 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2023-08-04 01:55:10,499 INFO L515 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2023-08-04 01:55:10,558 INFO L144 ThreadInstanceAdder]: Constructed 72 joinOtherThreadTransitions. [2023-08-04 01:55:10,566 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 361 transitions, 1010 flow [2023-08-04 01:56:17,837 INFO L124 PetriNetUnfolderBase]: 175310/479618 cut-off events. [2023-08-04 01:56:17,837 INFO L125 PetriNetUnfolderBase]: For 148184/148184 co-relation queries the response was YES. [2023-08-04 01:56:24,444 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629635 conditions, 479618 events. 175310/479618 cut-off events. For 148184/148184 co-relation queries the response was YES. Maximal size of possible extension queue 5947. Compared 6976225 event pairs, 5554 based on Foata normal form. 0/418633 useless extension candidates. Maximal degree in co-relation 305840. Up to 24576 conditions per place. [2023-08-04 01:56:24,445 INFO L82 GeneralOperation]: Start removeDead. Operand has 276 places, 361 transitions, 1010 flow [2023-08-04 01:56:28,691 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 276 places, 361 transitions, 1010 flow [2023-08-04 01:56:28,692 INFO L124 etLargeBlockEncoding]: Petri net LBE is using variable-based independence relation. [2023-08-04 01:56:28,692 INFO L131 etLargeBlockEncoding]: Starting large block encoding on Petri net that has 276 places, 361 transitions, 1010 flow [2023-08-04 01:56:28,692 INFO L113 LiptonReduction]: Starting Lipton reduction on Petri net that has 276 places, 361 transitions, 1010 flow [2023-08-04 01:56:28,693 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 276 places, 361 transitions, 1010 flow [2023-08-04 01:57:40,017 INFO L124 PetriNetUnfolderBase]: 175310/479618 cut-off events. [2023-08-04 01:57:40,018 INFO L125 PetriNetUnfolderBase]: For 148184/148184 co-relation queries the response was YES. [2023-08-04 01:57:47,203 INFO L83 FinitePrefix]: Finished finitePrefix Result has 629635 conditions, 479618 events. 175310/479618 cut-off events. For 148184/148184 co-relation queries the response was YES. Maximal size of possible extension queue 5947. Compared 6976225 event pairs, 5554 based on Foata normal form. 0/418633 useless extension candidates. Maximal degree in co-relation 305840. Up to 24576 conditions per place. [2023-08-04 01:57:57,680 INFO L119 LiptonReduction]: Number of co-enabled transitions 32688 [2023-08-04 01:58:02,971 INFO L134 LiptonReduction]: Checked pairs total: 212316 [2023-08-04 01:58:02,971 INFO L136 LiptonReduction]: Total number of compositions: 214 [2023-08-04 01:58:02,974 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == InUseError ======== [2023-08-04 01:58:02,975 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;@35f4c030, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-08-04 01:58:02,975 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-08-04 01:58:02,986 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2023-08-04 01:58:02,986 INFO L124 PetriNetUnfolderBase]: 16/168 cut-off events. [2023-08-04 01:58:02,986 INFO L125 PetriNetUnfolderBase]: For 9/9 co-relation queries the response was YES. [2023-08-04 01:58:02,987 INFO L200 CegarLoopForPetriNet]: Found error trace [2023-08-04 01:58:02,987 INFO L208 CegarLoopForPetriNet]: trace histogram [3, 2, 2, 1, 1, 1, 1] [2023-08-04 01:58:02,987 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr4INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr5INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2023-08-04 01:58:02,987 INFO L145 PredicateUnifier]: Initialized classic predicate unifier [2023-08-04 01:58:02,987 INFO L85 PathProgramCache]: Analyzing trace with hash -1071200835, now seen corresponding path program 1 times [2023-08-04 01:58:02,988 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-08-04 01:58:02,988 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1808333434] [2023-08-04 01:58:02,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:02,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-08-04 01:58:03,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:03,231 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 01:58:03,231 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-08-04 01:58:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1808333434] [2023-08-04 01:58:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1808333434] provided 0 perfect and 1 imperfect interpolant sequences [2023-08-04 01:58:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [412840542] [2023-08-04 01:58:03,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-08-04 01:58:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-08-04 01:58:03,233 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-08-04 01:58:03,239 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 01:58:03,240 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 01:58:03,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-08-04 01:58:03,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 152 conjuncts, 4 conjunts are in the unsatisfiable core [2023-08-04 01:58:03,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-08-04 01:58:03,408 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 01:58:03,409 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-08-04 01:58:03,409 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [412840542] provided 1 perfect and 0 imperfect interpolant sequences [2023-08-04 01:58:03,409 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-08-04 01:58:03,409 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2023-08-04 01:58:03,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [801077443] [2023-08-04 01:58:03,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-08-04 01:58:03,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-08-04 01:58:03,438 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-08-04 01:58:03,455 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-08-04 01:58:03,456 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2023-08-04 01:58:03,479 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 245 out of 575 [2023-08-04 01:58:03,488 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 176 transitions, 640 flow. Second operand has 5 states, 5 states have (on average 246.6) internal successors, (1233), 5 states have internal predecessors, (1233), 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 01:58:03,489 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2023-08-04 01:58:03,489 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 245 of 575 [2023-08-04 01:58:03,490 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand