./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 3289d67d Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:21:22,419 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:21:22,517 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:21:22,523 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:21:22,524 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:21:22,546 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:21:22,548 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:21:22,548 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:21:22,549 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:21:22,550 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:21:22,551 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:21:22,551 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:21:22,551 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:21:22,551 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:21:22,553 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:21:22,553 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:21:22,553 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:21:22,554 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:21:22,554 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:21:22,554 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:21:22,554 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:21:22,556 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:21:22,556 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:21:22,558 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:21:22,558 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:21:22,558 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:21:22,558 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:21:22,559 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:21:22,559 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:21:22,559 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:21:22,559 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:21:22,559 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:21:22,559 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:21:22,560 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:21:22,560 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:21:22,561 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:21:22,561 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:21:22,562 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dce9d71ca8bbe247a74e6b2653e5cdb882c6b8b5d902edf534df70d90ee806fe [2024-11-16 19:21:22,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:21:22,793 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:21:22,795 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:21:22,798 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:21:22,798 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:21:22,799 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-16 19:21:24,184 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:21:24,424 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:21:24,439 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i [2024-11-16 19:21:24,450 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debbfe56f/6bb3ce45c85a4974a910dc7de44c46ff/FLAGb67bb89ed [2024-11-16 19:21:24,461 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/debbfe56f/6bb3ce45c85a4974a910dc7de44c46ff [2024-11-16 19:21:24,463 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:21:24,464 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:21:24,465 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:21:24,465 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:21:24,469 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:21:24,470 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:21:24" (1/1) ... [2024-11-16 19:21:24,471 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5099a665 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:24, skipping insertion in model container [2024-11-16 19:21:24,471 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:21:24" (1/1) ... [2024-11-16 19:21:24,503 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:21:24,821 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2024-11-16 19:21:24,853 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:21:24,904 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:21:24,951 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_77-tricky_address4_racing.i[41323,41336] [2024-11-16 19:21:24,966 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:21:25,018 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:21:25,019 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25 WrapperNode [2024-11-16 19:21:25,019 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:21:25,020 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:21:25,021 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:21:25,021 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:21:25,026 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,048 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,079 INFO L138 Inliner]: procedures = 271, calls = 109, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 262 [2024-11-16 19:21:25,080 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:21:25,084 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:21:25,084 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:21:25,085 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:21:25,095 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,096 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,101 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,116 INFO L175 MemorySlicer]: Split 79 memory accesses to 4 slices as follows [2, 5, 70, 2]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 60, 0]. The 5 writes are split as follows [0, 0, 4, 1]. [2024-11-16 19:21:25,117 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,117 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,126 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,127 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,131 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,133 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,135 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:21:25,136 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:21:25,136 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:21:25,136 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:21:25,137 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (1/1) ... [2024-11-16 19:21:25,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:21:25,159 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:25,173 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-16 19:21:25,175 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:21:25,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:21:25,213 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-16 19:21:25,214 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-16 19:21:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:21:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:21:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:21:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:21:25,214 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:21:25,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:21:25,215 WARN L225 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-16 19:21:25,326 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:21:25,328 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:21:25,554 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-16 19:21:25,554 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L954-1: SUMMARY for call ULTIMATE.dealloc(main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset); srcloc: null [2024-11-16 19:21:25,618 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:21:25,622 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:21:25,930 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:21:25,933 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:21:25,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:21:25 BoogieIcfgContainer [2024-11-16 19:21:25,933 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:21:25,935 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:21:25,936 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:21:25,938 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:21:25,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:21:24" (1/3) ... [2024-11-16 19:21:25,939 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601d8929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:21:25, skipping insertion in model container [2024-11-16 19:21:25,939 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:25" (2/3) ... [2024-11-16 19:21:25,940 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@601d8929 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:21:25, skipping insertion in model container [2024-11-16 19:21:25,940 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:21:25" (3/3) ... [2024-11-16 19:21:25,941 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_77-tricky_address4_racing.i [2024-11-16 19:21:25,954 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:21:25,954 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2024-11-16 19:21:25,955 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:21:25,992 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-16 19:21:26,024 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 82 places, 108 transitions, 223 flow [2024-11-16 19:21:26,069 INFO L124 PetriNetUnfolderBase]: 43/161 cut-off events. [2024-11-16 19:21:26,072 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:21:26,077 INFO L83 FinitePrefix]: Finished finitePrefix Result has 166 conditions, 161 events. 43/161 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 13. Compared 636 event pairs, 0 based on Foata normal form. 0/112 useless extension candidates. Maximal degree in co-relation 98. Up to 8 conditions per place. [2024-11-16 19:21:26,078 INFO L82 GeneralOperation]: Start removeDead. Operand has 82 places, 108 transitions, 223 flow [2024-11-16 19:21:26,083 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 81 places, 106 transitions, 216 flow [2024-11-16 19:21:26,091 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:26,099 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@33c2af47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:26,103 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-16 19:21:26,113 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:26,114 INFO L124 PetriNetUnfolderBase]: 5/29 cut-off events. [2024-11-16 19:21:26,114 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:26,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:26,115 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:26,118 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 19:21:26,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:26,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1673192242, now seen corresponding path program 1 times [2024-11-16 19:21:26,136 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:26,140 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [71936435] [2024-11-16 19:21:26,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:26,141 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:26,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:26,455 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:26,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:26,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [71936435] [2024-11-16 19:21:26,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [71936435] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:26,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:26,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:26,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351323125] [2024-11-16 19:21:26,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:26,469 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:26,472 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:26,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:26,493 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:26,495 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 37 out of 108 [2024-11-16 19:21:26,496 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 106 transitions, 216 flow. Second operand has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-16 19:21:26,496 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:26,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 37 of 108 [2024-11-16 19:21:26,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:26,707 INFO L124 PetriNetUnfolderBase]: 443/1320 cut-off events. [2024-11-16 19:21:26,707 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:26,711 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2199 conditions, 1320 events. 443/1320 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8935 event pairs, 399 based on Foata normal form. 464/1712 useless extension candidates. Maximal degree in co-relation 2123. Up to 875 conditions per place. [2024-11-16 19:21:26,719 INFO L140 encePairwiseOnDemand]: 83/108 looper letters, 44 selfloop transitions, 0 changer transitions 0/81 dead transitions. [2024-11-16 19:21:26,719 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 82 places, 81 transitions, 254 flow [2024-11-16 19:21:26,720 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:21:26,722 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:21:26,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 143 transitions. [2024-11-16 19:21:26,729 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-11-16 19:21:26,730 INFO L175 Difference]: Start difference. First operand has 81 places, 106 transitions, 216 flow. Second operand 2 states and 143 transitions. [2024-11-16 19:21:26,731 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 82 places, 81 transitions, 254 flow [2024-11-16 19:21:26,732 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 81 transitions, 254 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:26,735 INFO L231 Difference]: Finished difference. Result has 82 places, 81 transitions, 166 flow [2024-11-16 19:21:26,737 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=81, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=166, PETRI_PLACES=82, PETRI_TRANSITIONS=81} [2024-11-16 19:21:26,739 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 1 predicate places. [2024-11-16 19:21:26,741 INFO L471 AbstractCegarLoop]: Abstraction has has 82 places, 81 transitions, 166 flow [2024-11-16 19:21:26,741 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 40.0) internal successors, (80), 2 states have internal predecessors, (80), 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) [2024-11-16 19:21:26,741 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:26,741 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:26,741 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:21:26,742 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 19:21:26,742 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:26,743 INFO L85 PathProgramCache]: Analyzing trace with hash 835209730, now seen corresponding path program 1 times [2024-11-16 19:21:26,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:26,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1086103294] [2024-11-16 19:21:26,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:26,744 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:26,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:26,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:26,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:26,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1086103294] [2024-11-16 19:21:26,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1086103294] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:26,872 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:26,872 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:26,873 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188118947] [2024-11-16 19:21:26,873 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:26,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:21:26,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:26,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:21:26,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:21:26,876 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 108 [2024-11-16 19:21:26,877 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 81 transitions, 166 flow. Second operand has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-16 19:21:26,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:26,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 108 [2024-11-16 19:21:26,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:27,162 INFO L124 PetriNetUnfolderBase]: 443/1322 cut-off events. [2024-11-16 19:21:27,162 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:27,165 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2204 conditions, 1322 events. 443/1322 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8941 event pairs, 399 based on Foata normal form. 0/1249 useless extension candidates. Maximal degree in co-relation 2200. Up to 876 conditions per place. [2024-11-16 19:21:27,167 INFO L140 encePairwiseOnDemand]: 105/108 looper letters, 44 selfloop transitions, 2 changer transitions 0/82 dead transitions. [2024-11-16 19:21:27,167 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 82 transitions, 260 flow [2024-11-16 19:21:27,168 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:21:27,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:21:27,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 155 transitions. [2024-11-16 19:21:27,172 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4783950617283951 [2024-11-16 19:21:27,173 INFO L175 Difference]: Start difference. First operand has 82 places, 81 transitions, 166 flow. Second operand 3 states and 155 transitions. [2024-11-16 19:21:27,173 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 82 transitions, 260 flow [2024-11-16 19:21:27,174 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 84 places, 82 transitions, 260 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:27,177 INFO L231 Difference]: Finished difference. Result has 85 places, 82 transitions, 178 flow [2024-11-16 19:21:27,177 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=166, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=178, PETRI_PLACES=85, PETRI_TRANSITIONS=82} [2024-11-16 19:21:27,177 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 4 predicate places. [2024-11-16 19:21:27,178 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 82 transitions, 178 flow [2024-11-16 19:21:27,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.0) internal successors, (114), 3 states have internal predecessors, (114), 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) [2024-11-16 19:21:27,178 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:27,178 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:27,179 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:21:27,179 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 19:21:27,180 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:27,180 INFO L85 PathProgramCache]: Analyzing trace with hash -1235046292, now seen corresponding path program 1 times [2024-11-16 19:21:27,180 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:27,180 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1218635471] [2024-11-16 19:21:27,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:27,180 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:27,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:27,277 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:27,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:27,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1218635471] [2024-11-16 19:21:27,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1218635471] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:27,279 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1914701451] [2024-11-16 19:21:27,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:27,279 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:27,279 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:27,281 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) [2024-11-16 19:21:27,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-16 19:21:27,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:27,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 221 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:21:27,370 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:27,398 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:27,399 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:27,415 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:27,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1914701451] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:27,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:27,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-16 19:21:27,416 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [64702562] [2024-11-16 19:21:27,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:27,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:21:27,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:27,418 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:21:27,418 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:21:27,420 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 108 [2024-11-16 19:21:27,420 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 82 transitions, 178 flow. Second operand has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 7 states have internal predecessors, (264), 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) [2024-11-16 19:21:27,421 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:27,421 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 108 [2024-11-16 19:21:27,421 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:27,629 INFO L124 PetriNetUnfolderBase]: 443/1328 cut-off events. [2024-11-16 19:21:27,629 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 19:21:27,632 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2223 conditions, 1328 events. 443/1328 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8943 event pairs, 399 based on Foata normal form. 0/1255 useless extension candidates. Maximal degree in co-relation 2217. Up to 876 conditions per place. [2024-11-16 19:21:27,635 INFO L140 encePairwiseOnDemand]: 105/108 looper letters, 44 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-11-16 19:21:27,635 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 85 transitions, 288 flow [2024-11-16 19:21:27,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:21:27,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:21:27,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 268 transitions. [2024-11-16 19:21:27,637 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.41358024691358025 [2024-11-16 19:21:27,637 INFO L175 Difference]: Start difference. First operand has 85 places, 82 transitions, 178 flow. Second operand 6 states and 268 transitions. [2024-11-16 19:21:27,637 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 85 transitions, 288 flow [2024-11-16 19:21:27,639 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 85 transitions, 286 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:27,640 INFO L231 Difference]: Finished difference. Result has 92 places, 85 transitions, 212 flow [2024-11-16 19:21:27,641 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=176, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=212, PETRI_PLACES=92, PETRI_TRANSITIONS=85} [2024-11-16 19:21:27,641 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 11 predicate places. [2024-11-16 19:21:27,642 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 85 transitions, 212 flow [2024-11-16 19:21:27,642 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 37.714285714285715) internal successors, (264), 7 states have internal predecessors, (264), 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) [2024-11-16 19:21:27,643 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:27,643 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:27,656 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-16 19:21:27,847 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:27,849 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 19:21:27,852 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:27,852 INFO L85 PathProgramCache]: Analyzing trace with hash -1797999446, now seen corresponding path program 2 times [2024-11-16 19:21:27,852 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:27,852 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1415456498] [2024-11-16 19:21:27,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:27,853 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:27,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:27,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:27,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:27,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1415456498] [2024-11-16 19:21:27,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1415456498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:27,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [643723487] [2024-11-16 19:21:27,964 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:21:27,964 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:27,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:27,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:21:27,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-16 19:21:28,040 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:21:28,041 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:21:28,042 INFO L255 TraceCheckSpWp]: Trace formula consists of 245 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:21:28,043 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:28,060 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:28,060 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:28,107 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-16 19:21:28,108 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [643723487] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:28,108 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:28,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:21:28,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779405028] [2024-11-16 19:21:28,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:28,109 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:21:28,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:28,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:21:28,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:21:28,110 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 36 out of 108 [2024-11-16 19:21:28,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 85 transitions, 212 flow. Second operand has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-16 19:21:28,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:28,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 36 of 108 [2024-11-16 19:21:28,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:28,293 INFO L124 PetriNetUnfolderBase]: 443/1340 cut-off events. [2024-11-16 19:21:28,293 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-16 19:21:28,295 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2267 conditions, 1340 events. 443/1340 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 57. Compared 8927 event pairs, 399 based on Foata normal form. 6/1274 useless extension candidates. Maximal degree in co-relation 2258. Up to 876 conditions per place. [2024-11-16 19:21:28,298 INFO L140 encePairwiseOnDemand]: 105/108 looper letters, 44 selfloop transitions, 11 changer transitions 0/91 dead transitions. [2024-11-16 19:21:28,298 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 103 places, 91 transitions, 358 flow [2024-11-16 19:21:28,298 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:21:28,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:21:28,300 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 493 transitions. [2024-11-16 19:21:28,300 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.38040123456790126 [2024-11-16 19:21:28,300 INFO L175 Difference]: Start difference. First operand has 92 places, 85 transitions, 212 flow. Second operand 12 states and 493 transitions. [2024-11-16 19:21:28,300 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 103 places, 91 transitions, 358 flow [2024-11-16 19:21:28,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 91 transitions, 350 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:28,303 INFO L231 Difference]: Finished difference. Result has 108 places, 91 transitions, 288 flow [2024-11-16 19:21:28,304 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=108, PETRI_DIFFERENCE_MINUEND_FLOW=204, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=288, PETRI_PLACES=108, PETRI_TRANSITIONS=91} [2024-11-16 19:21:28,304 INFO L277 CegarLoopForPetriNet]: 81 programPoint places, 27 predicate places. [2024-11-16 19:21:28,304 INFO L471 AbstractCegarLoop]: Abstraction has has 108 places, 91 transitions, 288 flow [2024-11-16 19:21:28,305 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 37.38461538461539) internal successors, (486), 13 states have internal predecessors, (486), 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) [2024-11-16 19:21:28,305 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:28,305 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:28,319 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-16 19:21:28,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-16 19:21:28,511 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 1 more)] === [2024-11-16 19:21:28,512 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:28,512 INFO L85 PathProgramCache]: Analyzing trace with hash 1371384230, now seen corresponding path program 3 times [2024-11-16 19:21:28,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:28,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [3244667] [2024-11-16 19:21:28,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:28,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:28,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:28,542 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:21:28,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:28,587 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:21:28,588 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:21:28,589 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (3 of 4 remaining) [2024-11-16 19:21:28,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 4 remaining) [2024-11-16 19:21:28,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 4 remaining) [2024-11-16 19:21:28,590 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 4 remaining) [2024-11-16 19:21:28,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:21:28,592 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 19:21:28,595 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:21:28,595 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 19:21:28,624 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:21:28,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 117 places, 154 transitions, 324 flow [2024-11-16 19:21:28,645 INFO L124 PetriNetUnfolderBase]: 72/270 cut-off events. [2024-11-16 19:21:28,645 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:21:28,646 INFO L83 FinitePrefix]: Finished finitePrefix Result has 282 conditions, 270 events. 72/270 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 1242 event pairs, 0 based on Foata normal form. 0/189 useless extension candidates. Maximal degree in co-relation 163. Up to 12 conditions per place. [2024-11-16 19:21:28,647 INFO L82 GeneralOperation]: Start removeDead. Operand has 117 places, 154 transitions, 324 flow [2024-11-16 19:21:28,649 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 117 places, 154 transitions, 324 flow [2024-11-16 19:21:28,650 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:28,653 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@33c2af47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:28,653 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:21:28,659 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:28,659 INFO L124 PetriNetUnfolderBase]: 18/95 cut-off events. [2024-11-16 19:21:28,659 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:21:28,660 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:28,660 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:28,660 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-16 19:21:28,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:28,661 INFO L85 PathProgramCache]: Analyzing trace with hash 154439671, now seen corresponding path program 1 times [2024-11-16 19:21:28,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:28,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810821026] [2024-11-16 19:21:28,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:28,662 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:28,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:28,678 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:28,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:28,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810821026] [2024-11-16 19:21:28,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810821026] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:28,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:28,679 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:28,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [814240526] [2024-11-16 19:21:28,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:28,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:28,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:28,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:28,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:28,680 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 51 out of 154 [2024-11-16 19:21:28,681 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 117 places, 154 transitions, 324 flow. Second operand has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-11-16 19:21:28,682 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:28,682 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 51 of 154 [2024-11-16 19:21:28,682 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:31,104 INFO L124 PetriNetUnfolderBase]: 18185/36569 cut-off events. [2024-11-16 19:21:31,105 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-16 19:21:31,177 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63618 conditions, 36569 events. 18185/36569 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 359068 event pairs, 16834 based on Foata normal form. 13942/48047 useless extension candidates. Maximal degree in co-relation 52172. Up to 26942 conditions per place. [2024-11-16 19:21:31,283 INFO L140 encePairwiseOnDemand]: 118/154 looper letters, 67 selfloop transitions, 0 changer transitions 0/118 dead transitions. [2024-11-16 19:21:31,284 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 118 places, 118 transitions, 386 flow [2024-11-16 19:21:31,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:21:31,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:21:31,285 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 205 transitions. [2024-11-16 19:21:31,285 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6655844155844156 [2024-11-16 19:21:31,285 INFO L175 Difference]: Start difference. First operand has 117 places, 154 transitions, 324 flow. Second operand 2 states and 205 transitions. [2024-11-16 19:21:31,285 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 118 places, 118 transitions, 386 flow [2024-11-16 19:21:31,287 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 118 transitions, 386 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:31,288 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 252 flow [2024-11-16 19:21:31,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=252, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-16 19:21:31,289 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, 1 predicate places. [2024-11-16 19:21:31,289 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 252 flow [2024-11-16 19:21:31,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 54.5) internal successors, (109), 2 states have internal predecessors, (109), 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) [2024-11-16 19:21:31,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:31,290 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:31,290 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:21:31,290 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-16 19:21:31,290 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:31,290 INFO L85 PathProgramCache]: Analyzing trace with hash -1081083423, now seen corresponding path program 1 times [2024-11-16 19:21:31,291 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:31,291 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [397049683] [2024-11-16 19:21:31,291 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:31,291 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:31,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:31,324 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:31,324 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:31,325 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [397049683] [2024-11-16 19:21:31,325 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [397049683] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:31,325 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:31,325 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:31,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606425835] [2024-11-16 19:21:31,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:31,326 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:21:31,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:31,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:21:31,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:21:31,327 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 154 [2024-11-16 19:21:31,327 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 252 flow. Second operand has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-16 19:21:31,327 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:31,327 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 154 [2024-11-16 19:21:31,327 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:33,762 INFO L124 PetriNetUnfolderBase]: 18185/36571 cut-off events. [2024-11-16 19:21:33,762 INFO L125 PetriNetUnfolderBase]: For 108/108 co-relation queries the response was YES. [2024-11-16 19:21:33,836 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63623 conditions, 36571 events. 18185/36571 cut-off events. For 108/108 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 359041 event pairs, 16834 based on Foata normal form. 0/34106 useless extension candidates. Maximal degree in co-relation 63618. Up to 26943 conditions per place. [2024-11-16 19:21:34,083 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 67 selfloop transitions, 2 changer transitions 0/119 dead transitions. [2024-11-16 19:21:34,083 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 119 transitions, 392 flow [2024-11-16 19:21:34,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:21:34,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:21:34,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 220 transitions. [2024-11-16 19:21:34,084 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-16 19:21:34,084 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 252 flow. Second operand 3 states and 220 transitions. [2024-11-16 19:21:34,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 119 transitions, 392 flow [2024-11-16 19:21:34,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 120 places, 119 transitions, 392 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:34,087 INFO L231 Difference]: Finished difference. Result has 121 places, 119 transitions, 264 flow [2024-11-16 19:21:34,087 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=252, PETRI_DIFFERENCE_MINUEND_PLACES=118, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=264, PETRI_PLACES=121, PETRI_TRANSITIONS=119} [2024-11-16 19:21:34,087 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, 4 predicate places. [2024-11-16 19:21:34,088 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 119 transitions, 264 flow [2024-11-16 19:21:34,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 52.333333333333336) internal successors, (157), 3 states have internal predecessors, (157), 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) [2024-11-16 19:21:34,088 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:34,088 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:34,088 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:21:34,088 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-16 19:21:34,089 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:34,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1112285195, now seen corresponding path program 1 times [2024-11-16 19:21:34,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:34,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1668948550] [2024-11-16 19:21:34,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:34,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:34,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:34,137 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:34,137 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:34,137 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1668948550] [2024-11-16 19:21:34,137 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1668948550] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:34,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1821589078] [2024-11-16 19:21:34,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:34,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:34,138 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:34,143 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:21:34,147 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-16 19:21:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:34,225 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:21:34,226 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:34,239 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:34,241 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:34,258 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:34,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1821589078] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:34,259 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:34,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-16 19:21:34,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [883627870] [2024-11-16 19:21:34,260 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:34,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:21:34,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:34,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:21:34,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:21:34,261 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 154 [2024-11-16 19:21:34,262 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 119 transitions, 264 flow. Second operand has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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) [2024-11-16 19:21:34,262 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:34,262 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 154 [2024-11-16 19:21:34,262 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:36,753 INFO L124 PetriNetUnfolderBase]: 18185/36577 cut-off events. [2024-11-16 19:21:36,753 INFO L125 PetriNetUnfolderBase]: For 113/113 co-relation queries the response was YES. [2024-11-16 19:21:36,840 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63642 conditions, 36577 events. 18185/36577 cut-off events. For 113/113 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 359040 event pairs, 16834 based on Foata normal form. 0/34112 useless extension candidates. Maximal degree in co-relation 63635. Up to 26943 conditions per place. [2024-11-16 19:21:36,915 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 67 selfloop transitions, 5 changer transitions 0/122 dead transitions. [2024-11-16 19:21:36,915 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 126 places, 122 transitions, 420 flow [2024-11-16 19:21:36,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:21:36,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:21:36,916 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 375 transitions. [2024-11-16 19:21:36,917 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.40584415584415584 [2024-11-16 19:21:36,917 INFO L175 Difference]: Start difference. First operand has 121 places, 119 transitions, 264 flow. Second operand 6 states and 375 transitions. [2024-11-16 19:21:36,917 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 126 places, 122 transitions, 420 flow [2024-11-16 19:21:36,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 122 transitions, 418 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:36,919 INFO L231 Difference]: Finished difference. Result has 128 places, 122 transitions, 298 flow [2024-11-16 19:21:36,919 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=262, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=119, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=298, PETRI_PLACES=128, PETRI_TRANSITIONS=122} [2024-11-16 19:21:36,920 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, 11 predicate places. [2024-11-16 19:21:36,920 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 122 transitions, 298 flow [2024-11-16 19:21:36,920 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 51.857142857142854) internal successors, (363), 7 states have internal predecessors, (363), 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) [2024-11-16 19:21:36,920 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:36,920 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:36,934 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 19:21:37,124 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:37,125 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-16 19:21:37,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1164821385, now seen corresponding path program 2 times [2024-11-16 19:21:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:37,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [406999557] [2024-11-16 19:21:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:37,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:37,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:37,250 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:37,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [406999557] [2024-11-16 19:21:37,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [406999557] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:37,251 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1632327817] [2024-11-16 19:21:37,251 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:21:37,252 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:37,252 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:37,255 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-16 19:21:37,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-16 19:21:37,383 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:21:37,383 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:21:37,386 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:21:37,387 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:37,407 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:37,407 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:37,460 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 0 proven. 20 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-11-16 19:21:37,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1632327817] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:37,461 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:37,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:21:37,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147487208] [2024-11-16 19:21:37,461 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:37,461 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:21:37,463 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:37,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:21:37,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:21:37,464 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 50 out of 154 [2024-11-16 19:21:37,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 122 transitions, 298 flow. Second operand has 13 states, 13 states have (on average 51.46153846153846) internal successors, (669), 13 states have internal predecessors, (669), 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) [2024-11-16 19:21:37,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:37,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 50 of 154 [2024-11-16 19:21:37,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:40,031 INFO L124 PetriNetUnfolderBase]: 18185/36589 cut-off events. [2024-11-16 19:21:40,031 INFO L125 PetriNetUnfolderBase]: For 220/220 co-relation queries the response was YES. [2024-11-16 19:21:40,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 63686 conditions, 36589 events. 18185/36589 cut-off events. For 220/220 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 359264 event pairs, 16834 based on Foata normal form. 6/34131 useless extension candidates. Maximal degree in co-relation 63676. Up to 26943 conditions per place. [2024-11-16 19:21:40,246 INFO L140 encePairwiseOnDemand]: 151/154 looper letters, 67 selfloop transitions, 11 changer transitions 0/128 dead transitions. [2024-11-16 19:21:40,246 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 128 transitions, 490 flow [2024-11-16 19:21:40,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:21:40,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:21:40,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 684 transitions. [2024-11-16 19:21:40,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.37012987012987014 [2024-11-16 19:21:40,251 INFO L175 Difference]: Start difference. First operand has 128 places, 122 transitions, 298 flow. Second operand 12 states and 684 transitions. [2024-11-16 19:21:40,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 139 places, 128 transitions, 490 flow [2024-11-16 19:21:40,252 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 138 places, 128 transitions, 482 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:40,254 INFO L231 Difference]: Finished difference. Result has 144 places, 128 transitions, 374 flow [2024-11-16 19:21:40,255 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=154, PETRI_DIFFERENCE_MINUEND_FLOW=290, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=374, PETRI_PLACES=144, PETRI_TRANSITIONS=128} [2024-11-16 19:21:40,255 INFO L277 CegarLoopForPetriNet]: 117 programPoint places, 27 predicate places. [2024-11-16 19:21:40,255 INFO L471 AbstractCegarLoop]: Abstraction has has 144 places, 128 transitions, 374 flow [2024-11-16 19:21:40,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 51.46153846153846) internal successors, (669), 13 states have internal predecessors, (669), 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) [2024-11-16 19:21:40,256 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:40,256 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:40,270 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 19:21:40,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:40,457 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-11-16 19:21:40,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:40,457 INFO L85 PathProgramCache]: Analyzing trace with hash 2015143685, now seen corresponding path program 3 times [2024-11-16 19:21:40,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:40,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069610783] [2024-11-16 19:21:40,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:40,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:40,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:40,486 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:21:40,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:40,514 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:21:40,521 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:21:40,522 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-16 19:21:40,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-16 19:21:40,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-16 19:21:40,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-16 19:21:40,522 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-16 19:21:40,522 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:21:40,522 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 19:21:40,523 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:21:40,523 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 19:21:40,551 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:21:40,554 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 152 places, 200 transitions, 427 flow [2024-11-16 19:21:40,574 INFO L124 PetriNetUnfolderBase]: 106/396 cut-off events. [2024-11-16 19:21:40,574 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-16 19:21:40,577 INFO L83 FinitePrefix]: Finished finitePrefix Result has 421 conditions, 396 events. 106/396 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1925 event pairs, 1 based on Foata normal form. 0/279 useless extension candidates. Maximal degree in co-relation 278. Up to 16 conditions per place. [2024-11-16 19:21:40,577 INFO L82 GeneralOperation]: Start removeDead. Operand has 152 places, 200 transitions, 427 flow [2024-11-16 19:21:40,579 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 152 places, 200 transitions, 427 flow [2024-11-16 19:21:40,580 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:40,581 INFO L333 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, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, 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;@33c2af47, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:40,581 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-16 19:21:40,586 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:40,587 INFO L124 PetriNetUnfolderBase]: 20/106 cut-off events. [2024-11-16 19:21:40,587 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:21:40,587 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:40,587 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:40,588 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (and 3 more)] === [2024-11-16 19:21:40,588 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:40,588 INFO L85 PathProgramCache]: Analyzing trace with hash -1951443612, now seen corresponding path program 1 times [2024-11-16 19:21:40,588 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:40,588 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2137121107] [2024-11-16 19:21:40,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:40,588 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:40,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:40,602 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-16 19:21:40,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:40,604 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2137121107] [2024-11-16 19:21:40,605 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2137121107] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:40,605 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:40,605 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:40,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381894148] [2024-11-16 19:21:40,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:40,605 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:40,605 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:40,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:40,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:40,606 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 65 out of 200 [2024-11-16 19:21:40,606 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 200 transitions, 427 flow. Second operand has 2 states, 2 states have (on average 70.0) internal successors, (140), 2 states have internal predecessors, (140), 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) [2024-11-16 19:21:40,606 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:40,607 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 65 of 200 [2024-11-16 19:21:40,607 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand