./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_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_71-funloop_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 bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 19:21:07,683 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 19:21:07,754 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 19:21:07,759 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 19:21:07,759 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 19:21:07,787 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 19:21:07,788 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 19:21:07,788 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 19:21:07,789 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 19:21:07,790 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 19:21:07,791 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 19:21:07,791 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 19:21:07,792 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 19:21:07,792 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 19:21:07,792 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 19:21:07,793 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 19:21:07,793 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 19:21:07,796 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 19:21:07,796 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 19:21:07,798 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 19:21:07,799 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 19:21:07,799 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 19:21:07,799 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 19:21:07,800 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 19:21:07,800 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 19:21:07,800 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 19:21:07,800 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 19:21:07,800 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 19:21:07,801 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 19:21:07,801 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 19:21:07,801 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 19:21:07,802 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 19:21:07,802 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:21:07,804 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 19:21:07,805 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 19:21:07,806 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 19:21:07,806 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bde6fe221f69c3fccb0f7c90e011f0b13ab5ca582ddcd328a459cbb512a8fd7f [2024-11-16 19:21:08,081 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 19:21:08,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 19:21:08,110 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 19:21:08,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 19:21:08,111 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 19:21:08,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-16 19:21:09,572 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 19:21:09,836 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 19:21:09,839 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/goblint-regression/28-race_reach_71-funloop_racing.i [2024-11-16 19:21:09,866 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb38c86d/b569a86410fc4d689a851fc4f0ad8b2c/FLAG4f8b86004 [2024-11-16 19:21:09,877 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/2eb38c86d/b569a86410fc4d689a851fc4f0ad8b2c [2024-11-16 19:21:09,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 19:21:09,881 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 19:21:09,882 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 19:21:09,882 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 19:21:09,888 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 19:21:09,889 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:21:09" (1/1) ... [2024-11-16 19:21:09,890 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d3c4b01 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:09, skipping insertion in model container [2024-11-16 19:21:09,890 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 07:21:09" (1/1) ... [2024-11-16 19:21:09,938 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 19:21:10,385 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_71-funloop_racing.i[41323,41336] [2024-11-16 19:21:10,427 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:21:10,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 19:21:10,531 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_71-funloop_racing.i[41323,41336] [2024-11-16 19:21:10,551 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 19:21:10,615 INFO L204 MainTranslator]: Completed translation [2024-11-16 19:21:10,616 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10 WrapperNode [2024-11-16 19:21:10,616 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 19:21:10,618 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 19:21:10,618 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 19:21:10,618 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 19:21:10,625 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,648 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,720 INFO L138 Inliner]: procedures = 272, calls = 107, calls flagged for inlining = 6, calls inlined = 7, statements flattened = 318 [2024-11-16 19:21:10,720 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 19:21:10,721 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 19:21:10,721 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 19:21:10,721 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 19:21:10,745 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,746 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,749 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,820 INFO L175 MemorySlicer]: Split 84 memory accesses to 4 slices as follows [2, 5, 2, 75]. 89 percent of accesses are in the largest equivalence class. The 67 initializations are split as follows [2, 5, 0, 60]. The 7 writes are split as follows [0, 0, 1, 6]. [2024-11-16 19:21:10,821 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,821 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,835 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,836 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,842 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,844 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,847 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 19:21:10,848 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 19:21:10,849 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 19:21:10,849 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 19:21:10,850 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (1/1) ... [2024-11-16 19:21:10,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 19:21:10,872 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:10,901 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 19:21:10,905 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 19:21:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 19:21:10,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 19:21:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-11-16 19:21:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 19:21:10,954 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 19:21:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 19:21:10,955 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-16 19:21:10,956 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure t_fun [2024-11-16 19:21:10,957 INFO L138 BoogieDeclarations]: Found implementation of procedure t_fun [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 19:21:10,957 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 19:21:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 19:21:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-16 19:21:10,958 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 19:21:10,958 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 19:21:10,961 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 19:21:11,139 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 19:21:11,141 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 19:21:11,565 INFO L1250 $ProcedureCfgBuilder]: dead code at ProgramPoint L954: havoc main_~#t_ids~0#1.base, main_~#t_ids~0#1.offset; [2024-11-16 19:21:11,565 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 19:21:11,664 INFO L303 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-16 19:21:11,664 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 19:21:12,095 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 19:21:12,096 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 19:21:12,098 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:21:12 BoogieIcfgContainer [2024-11-16 19:21:12,099 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 19:21:12,102 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 19:21:12,102 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 19:21:12,105 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 19:21:12,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 07:21:09" (1/3) ... [2024-11-16 19:21:12,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d2843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:21:12, skipping insertion in model container [2024-11-16 19:21:12,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 07:21:10" (2/3) ... [2024-11-16 19:21:12,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@509d2843 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 07:21:12, skipping insertion in model container [2024-11-16 19:21:12,108 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 07:21:12" (3/3) ... [2024-11-16 19:21:12,110 INFO L112 eAbstractionObserver]: Analyzing ICFG 28-race_reach_71-funloop_racing.i [2024-11-16 19:21:12,128 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 19:21:12,128 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2024-11-16 19:21:12,128 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-16 19:21:12,189 INFO L143 ThreadInstanceAdder]: Constructed 1 joinOtherThreadTransitions. [2024-11-16 19:21:12,235 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 115 places, 157 transitions, 321 flow [2024-11-16 19:21:12,316 INFO L124 PetriNetUnfolderBase]: 73/254 cut-off events. [2024-11-16 19:21:12,319 INFO L125 PetriNetUnfolderBase]: For 1/1 co-relation queries the response was YES. [2024-11-16 19:21:12,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259 conditions, 254 events. 73/254 cut-off events. For 1/1 co-relation queries the response was YES. Maximal size of possible extension queue 18. Compared 1160 event pairs, 0 based on Foata normal form. 0/173 useless extension candidates. Maximal degree in co-relation 147. Up to 8 conditions per place. [2024-11-16 19:21:12,328 INFO L82 GeneralOperation]: Start removeDead. Operand has 115 places, 157 transitions, 321 flow [2024-11-16 19:21:12,336 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 114 places, 155 transitions, 314 flow [2024-11-16 19:21:12,345 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:12,353 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;@1af513fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:12,353 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-11-16 19:21:12,364 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:12,365 INFO L124 PetriNetUnfolderBase]: 10/44 cut-off events. [2024-11-16 19:21:12,365 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:12,366 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:12,366 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:12,367 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:21:12,373 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:12,373 INFO L85 PathProgramCache]: Analyzing trace with hash 300869593, now seen corresponding path program 1 times [2024-11-16 19:21:12,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:12,383 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613759446] [2024-11-16 19:21:12,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:12,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:12,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:12,649 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 19:21:12,650 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:12,650 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613759446] [2024-11-16 19:21:12,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613759446] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:12,651 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:12,651 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:12,654 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311955105] [2024-11-16 19:21:12,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:12,665 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:12,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:12,702 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:12,703 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:12,705 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 56 out of 157 [2024-11-16 19:21:12,709 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 155 transitions, 314 flow. Second operand has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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 19:21:12,709 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:12,709 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 56 of 157 [2024-11-16 19:21:12,711 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:13,174 INFO L124 PetriNetUnfolderBase]: 832/2431 cut-off events. [2024-11-16 19:21:13,175 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:13,230 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3986 conditions, 2431 events. 832/2431 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19237 event pairs, 684 based on Foata normal form. 881/3178 useless extension candidates. Maximal degree in co-relation 3859. Up to 1551 conditions per place. [2024-11-16 19:21:13,243 INFO L140 encePairwiseOnDemand]: 119/157 looper letters, 61 selfloop transitions, 0 changer transitions 0/117 dead transitions. [2024-11-16 19:21:13,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 117 transitions, 360 flow [2024-11-16 19:21:13,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:21:13,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:21:13,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 211 transitions. [2024-11-16 19:21:13,260 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6719745222929936 [2024-11-16 19:21:13,263 INFO L175 Difference]: Start difference. First operand has 114 places, 155 transitions, 314 flow. Second operand 2 states and 211 transitions. [2024-11-16 19:21:13,264 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 117 transitions, 360 flow [2024-11-16 19:21:13,267 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 115 places, 117 transitions, 360 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:13,272 INFO L231 Difference]: Finished difference. Result has 115 places, 117 transitions, 238 flow [2024-11-16 19:21:13,275 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=114, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=238, PETRI_PLACES=115, PETRI_TRANSITIONS=117} [2024-11-16 19:21:13,280 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 1 predicate places. [2024-11-16 19:21:13,280 INFO L471 AbstractCegarLoop]: Abstraction has has 115 places, 117 transitions, 238 flow [2024-11-16 19:21:13,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 59.0) internal successors, (118), 2 states have internal predecessors, (118), 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 19:21:13,281 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:13,281 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:13,281 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 19:21:13,282 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:21:13,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash -1317460464, now seen corresponding path program 1 times [2024-11-16 19:21:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:13,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [431501667] [2024-11-16 19:21:13,284 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:13,284 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:13,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:13,460 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 19:21:13,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:13,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [431501667] [2024-11-16 19:21:13,462 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [431501667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:13,462 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:13,462 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:13,462 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [771122946] [2024-11-16 19:21:13,463 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:13,464 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:21:13,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:13,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:21:13,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:21:13,467 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 157 [2024-11-16 19:21:13,468 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 117 transitions, 238 flow. Second operand has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 19:21:13,468 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:13,468 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 157 [2024-11-16 19:21:13,469 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:13,899 INFO L124 PetriNetUnfolderBase]: 832/2433 cut-off events. [2024-11-16 19:21:13,900 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-11-16 19:21:13,904 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3991 conditions, 2433 events. 832/2433 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19253 event pairs, 684 based on Foata normal form. 0/2298 useless extension candidates. Maximal degree in co-relation 3987. Up to 1552 conditions per place. [2024-11-16 19:21:13,912 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 61 selfloop transitions, 2 changer transitions 0/118 dead transitions. [2024-11-16 19:21:13,912 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 118 transitions, 366 flow [2024-11-16 19:21:13,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:21:13,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:21:13,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 229 transitions. [2024-11-16 19:21:13,916 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861995753715499 [2024-11-16 19:21:13,916 INFO L175 Difference]: Start difference. First operand has 115 places, 117 transitions, 238 flow. Second operand 3 states and 229 transitions. [2024-11-16 19:21:13,916 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 118 transitions, 366 flow [2024-11-16 19:21:13,917 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 117 places, 118 transitions, 366 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:13,922 INFO L231 Difference]: Finished difference. Result has 118 places, 118 transitions, 250 flow [2024-11-16 19:21:13,923 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=238, PETRI_DIFFERENCE_MINUEND_PLACES=115, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=117, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=250, PETRI_PLACES=118, PETRI_TRANSITIONS=118} [2024-11-16 19:21:13,923 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 4 predicate places. [2024-11-16 19:21:13,924 INFO L471 AbstractCegarLoop]: Abstraction has has 118 places, 118 transitions, 250 flow [2024-11-16 19:21:13,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 57.0) internal successors, (171), 3 states have internal predecessors, (171), 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 19:21:13,925 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:13,925 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:13,926 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-16 19:21:13,926 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:21:13,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:13,928 INFO L85 PathProgramCache]: Analyzing trace with hash -1337346015, now seen corresponding path program 1 times [2024-11-16 19:21:13,928 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:13,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [728982135] [2024-11-16 19:21:13,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:13,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:13,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:14,058 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 19:21:14,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [728982135] [2024-11-16 19:21:14,060 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [728982135] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:14,060 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [328767457] [2024-11-16 19:21:14,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:14,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:14,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:14,064 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 19:21:14,066 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 19:21:14,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:14,194 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:21:14,199 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:14,245 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 19:21:14,245 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:14,269 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 19:21:14,269 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [328767457] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:14,270 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:14,270 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-16 19:21:14,271 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [21195709] [2024-11-16 19:21:14,271 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:14,271 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:21:14,271 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:14,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:21:14,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:21:14,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 157 [2024-11-16 19:21:14,281 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 118 places, 118 transitions, 250 flow. Second operand has 7 states, 7 states have (on average 56.714285714285715) internal successors, (397), 7 states have internal predecessors, (397), 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 19:21:14,281 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:14,281 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 157 [2024-11-16 19:21:14,281 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:14,670 INFO L124 PetriNetUnfolderBase]: 832/2439 cut-off events. [2024-11-16 19:21:14,671 INFO L125 PetriNetUnfolderBase]: For 5/5 co-relation queries the response was YES. [2024-11-16 19:21:14,676 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4010 conditions, 2439 events. 832/2439 cut-off events. For 5/5 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19257 event pairs, 684 based on Foata normal form. 0/2304 useless extension candidates. Maximal degree in co-relation 4004. Up to 1552 conditions per place. [2024-11-16 19:21:14,686 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 61 selfloop transitions, 5 changer transitions 0/121 dead transitions. [2024-11-16 19:21:14,686 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 123 places, 121 transitions, 394 flow [2024-11-16 19:21:14,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:21:14,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:21:14,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 399 transitions. [2024-11-16 19:21:14,689 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.42356687898089174 [2024-11-16 19:21:14,690 INFO L175 Difference]: Start difference. First operand has 118 places, 118 transitions, 250 flow. Second operand 6 states and 399 transitions. [2024-11-16 19:21:14,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 123 places, 121 transitions, 394 flow [2024-11-16 19:21:14,692 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 121 transitions, 392 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:14,694 INFO L231 Difference]: Finished difference. Result has 125 places, 121 transitions, 284 flow [2024-11-16 19:21:14,696 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=248, PETRI_DIFFERENCE_MINUEND_PLACES=117, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=284, PETRI_PLACES=125, PETRI_TRANSITIONS=121} [2024-11-16 19:21:14,697 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 11 predicate places. [2024-11-16 19:21:14,697 INFO L471 AbstractCegarLoop]: Abstraction has has 125 places, 121 transitions, 284 flow [2024-11-16 19:21:14,697 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 56.714285714285715) internal successors, (397), 7 states have internal predecessors, (397), 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 19:21:14,697 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:14,698 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:14,717 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 19:21:14,898 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 19:21:14,899 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:21:14,900 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:14,900 INFO L85 PathProgramCache]: Analyzing trace with hash -766890796, now seen corresponding path program 2 times [2024-11-16 19:21:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:14,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [722936585] [2024-11-16 19:21:14,902 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:14,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:15,043 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 19:21:15,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:15,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [722936585] [2024-11-16 19:21:15,043 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [722936585] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:15,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1288385091] [2024-11-16 19:21:15,044 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:21:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:15,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:15,047 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 19:21:15,048 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 19:21:15,154 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:21:15,154 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:21:15,156 INFO L255 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:21:15,158 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:15,193 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 19:21:15,193 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:15,275 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 19:21:15,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1288385091] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:15,278 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:15,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:21:15,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073861763] [2024-11-16 19:21:15,279 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:15,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:21:15,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:15,280 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:21:15,280 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:21:15,282 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 55 out of 157 [2024-11-16 19:21:15,283 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 121 transitions, 284 flow. Second operand has 13 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 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 19:21:15,284 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:15,284 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 55 of 157 [2024-11-16 19:21:15,284 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:15,721 INFO L124 PetriNetUnfolderBase]: 832/2451 cut-off events. [2024-11-16 19:21:15,722 INFO L125 PetriNetUnfolderBase]: For 112/112 co-relation queries the response was YES. [2024-11-16 19:21:15,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4054 conditions, 2451 events. 832/2451 cut-off events. For 112/112 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 19264 event pairs, 684 based on Foata normal form. 6/2323 useless extension candidates. Maximal degree in co-relation 4045. Up to 1552 conditions per place. [2024-11-16 19:21:15,739 INFO L140 encePairwiseOnDemand]: 154/157 looper letters, 61 selfloop transitions, 11 changer transitions 0/127 dead transitions. [2024-11-16 19:21:15,739 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 127 transitions, 464 flow [2024-11-16 19:21:15,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:21:15,740 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:21:15,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 738 transitions. [2024-11-16 19:21:15,743 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.39171974522292996 [2024-11-16 19:21:15,743 INFO L175 Difference]: Start difference. First operand has 125 places, 121 transitions, 284 flow. Second operand 12 states and 738 transitions. [2024-11-16 19:21:15,743 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 127 transitions, 464 flow [2024-11-16 19:21:15,745 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 127 transitions, 456 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:15,747 INFO L231 Difference]: Finished difference. Result has 141 places, 127 transitions, 360 flow [2024-11-16 19:21:15,748 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=157, PETRI_DIFFERENCE_MINUEND_FLOW=276, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=121, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=360, PETRI_PLACES=141, PETRI_TRANSITIONS=127} [2024-11-16 19:21:15,749 INFO L277 CegarLoopForPetriNet]: 114 programPoint places, 27 predicate places. [2024-11-16 19:21:15,749 INFO L471 AbstractCegarLoop]: Abstraction has has 141 places, 127 transitions, 360 flow [2024-11-16 19:21:15,750 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 56.38461538461539) internal successors, (733), 13 states have internal predecessors, (733), 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 19:21:15,750 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:15,750 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 2, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:15,772 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 19:21:15,954 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 19:21:15,955 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 2 more)] === [2024-11-16 19:21:15,955 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:15,955 INFO L85 PathProgramCache]: Analyzing trace with hash 179244922, now seen corresponding path program 3 times [2024-11-16 19:21:15,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:15,956 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1568514309] [2024-11-16 19:21:15,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:15,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:15,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:16,000 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:21:16,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:16,052 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:21:16,053 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:21:16,054 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-11-16 19:21:16,056 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-11-16 19:21:16,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-11-16 19:21:16,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-11-16 19:21:16,057 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-11-16 19:21:16,060 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-16 19:21:16,061 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 19:21:16,063 WARN L244 ceAbstractionStarter]: 1 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:21:16,065 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 2 thread instances. [2024-11-16 19:21:16,115 INFO L143 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-11-16 19:21:16,118 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 153 places, 208 transitions, 432 flow [2024-11-16 19:21:16,178 INFO L124 PetriNetUnfolderBase]: 118/412 cut-off events. [2024-11-16 19:21:16,178 INFO L125 PetriNetUnfolderBase]: For 6/6 co-relation queries the response was YES. [2024-11-16 19:21:16,182 INFO L83 FinitePrefix]: Finished finitePrefix Result has 424 conditions, 412 events. 118/412 cut-off events. For 6/6 co-relation queries the response was YES. Maximal size of possible extension queue 26. Compared 2185 event pairs, 0 based on Foata normal form. 0/282 useless extension candidates. Maximal degree in co-relation 256. Up to 12 conditions per place. [2024-11-16 19:21:16,182 INFO L82 GeneralOperation]: Start removeDead. Operand has 153 places, 208 transitions, 432 flow [2024-11-16 19:21:16,187 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 153 places, 208 transitions, 432 flow [2024-11-16 19:21:16,189 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:16,190 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;@1af513fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:16,190 INFO L334 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2024-11-16 19:21:16,201 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:16,201 INFO L124 PetriNetUnfolderBase]: 26/120 cut-off events. [2024-11-16 19:21:16,202 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-11-16 19:21:16,202 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:16,202 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:16,202 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:21:16,203 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:16,203 INFO L85 PathProgramCache]: Analyzing trace with hash -1154676718, now seen corresponding path program 1 times [2024-11-16 19:21:16,203 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:16,203 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644183576] [2024-11-16 19:21:16,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:16,204 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:16,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:16,227 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 19:21:16,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:16,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644183576] [2024-11-16 19:21:16,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644183576] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:16,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:16,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:16,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [533558636] [2024-11-16 19:21:16,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:16,229 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:16,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:16,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:16,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:16,230 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 73 out of 208 [2024-11-16 19:21:16,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 153 places, 208 transitions, 432 flow. Second operand has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 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 19:21:16,231 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:16,231 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 73 of 208 [2024-11-16 19:21:16,231 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:22,688 INFO L124 PetriNetUnfolderBase]: 33197/66619 cut-off events. [2024-11-16 19:21:22,688 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-16 19:21:22,854 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114367 conditions, 66619 events. 33197/66619 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 721060 event pairs, 28520 based on Foata normal form. 26470/88670 useless extension candidates. Maximal degree in co-relation 93878. Up to 47641 conditions per place. [2024-11-16 19:21:23,144 INFO L140 encePairwiseOnDemand]: 158/208 looper letters, 85 selfloop transitions, 0 changer transitions 0/158 dead transitions. [2024-11-16 19:21:23,144 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 158 transitions, 502 flow [2024-11-16 19:21:23,145 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 19:21:23,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-16 19:21:23,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 281 transitions. [2024-11-16 19:21:23,146 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.6754807692307693 [2024-11-16 19:21:23,146 INFO L175 Difference]: Start difference. First operand has 153 places, 208 transitions, 432 flow. Second operand 2 states and 281 transitions. [2024-11-16 19:21:23,146 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 158 transitions, 502 flow [2024-11-16 19:21:23,149 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 154 places, 158 transitions, 502 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:23,153 INFO L231 Difference]: Finished difference. Result has 154 places, 158 transitions, 332 flow [2024-11-16 19:21:23,154 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=158, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=332, PETRI_PLACES=154, PETRI_TRANSITIONS=158} [2024-11-16 19:21:23,155 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 1 predicate places. [2024-11-16 19:21:23,156 INFO L471 AbstractCegarLoop]: Abstraction has has 154 places, 158 transitions, 332 flow [2024-11-16 19:21:23,157 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 78.5) internal successors, (157), 2 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 19:21:23,157 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:23,157 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:23,157 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-16 19:21:23,157 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:21:23,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:23,158 INFO L85 PathProgramCache]: Analyzing trace with hash 432042220, now seen corresponding path program 1 times [2024-11-16 19:21:23,158 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:23,158 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [655316297] [2024-11-16 19:21:23,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:23,159 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:23,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:23,217 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 19:21:23,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:23,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [655316297] [2024-11-16 19:21:23,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [655316297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:23,218 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:23,219 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:23,219 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9234941] [2024-11-16 19:21:23,219 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:23,219 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 19:21:23,219 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:23,220 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 19:21:23,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-16 19:21:23,221 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 208 [2024-11-16 19:21:23,222 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 158 transitions, 332 flow. Second operand has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 19:21:23,222 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:23,222 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 208 [2024-11-16 19:21:23,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:28,176 INFO L124 PetriNetUnfolderBase]: 33197/66621 cut-off events. [2024-11-16 19:21:28,176 INFO L125 PetriNetUnfolderBase]: For 146/146 co-relation queries the response was YES. [2024-11-16 19:21:28,321 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114372 conditions, 66621 events. 33197/66621 cut-off events. For 146/146 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 721517 event pairs, 28520 based on Foata normal form. 0/62201 useless extension candidates. Maximal degree in co-relation 114367. Up to 47642 conditions per place. [2024-11-16 19:21:28,568 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 85 selfloop transitions, 2 changer transitions 0/159 dead transitions. [2024-11-16 19:21:28,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 156 places, 159 transitions, 508 flow [2024-11-16 19:21:28,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 19:21:28,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-16 19:21:28,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 304 transitions. [2024-11-16 19:21:28,570 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.48717948717948717 [2024-11-16 19:21:28,570 INFO L175 Difference]: Start difference. First operand has 154 places, 158 transitions, 332 flow. Second operand 3 states and 304 transitions. [2024-11-16 19:21:28,570 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 156 places, 159 transitions, 508 flow [2024-11-16 19:21:28,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 156 places, 159 transitions, 508 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-16 19:21:28,574 INFO L231 Difference]: Finished difference. Result has 157 places, 159 transitions, 344 flow [2024-11-16 19:21:28,575 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=332, PETRI_DIFFERENCE_MINUEND_PLACES=154, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=158, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=344, PETRI_PLACES=157, PETRI_TRANSITIONS=159} [2024-11-16 19:21:28,575 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 4 predicate places. [2024-11-16 19:21:28,576 INFO L471 AbstractCegarLoop]: Abstraction has has 157 places, 159 transitions, 344 flow [2024-11-16 19:21:28,576 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 74.33333333333333) internal successors, (223), 3 states have internal predecessors, (223), 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 19:21:28,576 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:28,576 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:28,576 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-16 19:21:28,578 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:21:28,578 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:28,578 INFO L85 PathProgramCache]: Analyzing trace with hash 191903869, now seen corresponding path program 1 times [2024-11-16 19:21:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:28,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [974612110] [2024-11-16 19:21:28,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:28,582 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:28,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:28,652 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 19:21:28,653 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:28,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [974612110] [2024-11-16 19:21:28,653 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [974612110] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:28,653 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1067701566] [2024-11-16 19:21:28,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:28,653 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:28,654 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:28,658 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 19:21:28,661 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 19:21:28,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:28,775 INFO L255 TraceCheckSpWp]: Trace formula consists of 236 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 19:21:28,777 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:28,793 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 19:21:28,795 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:28,818 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 19:21:28,819 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1067701566] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:28,819 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:28,819 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-16 19:21:28,819 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858735652] [2024-11-16 19:21:28,820 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:28,820 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-16 19:21:28,820 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:28,821 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-16 19:21:28,821 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-16 19:21:28,824 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 208 [2024-11-16 19:21:28,825 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 159 transitions, 344 flow. Second operand has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 19:21:28,825 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:28,826 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 208 [2024-11-16 19:21:28,826 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:33,719 INFO L124 PetriNetUnfolderBase]: 33197/66627 cut-off events. [2024-11-16 19:21:33,720 INFO L125 PetriNetUnfolderBase]: For 151/151 co-relation queries the response was YES. [2024-11-16 19:21:33,924 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114391 conditions, 66627 events. 33197/66627 cut-off events. For 151/151 co-relation queries the response was YES. Maximal size of possible extension queue 2121. Compared 721340 event pairs, 28520 based on Foata normal form. 0/62207 useless extension candidates. Maximal degree in co-relation 114384. Up to 47642 conditions per place. [2024-11-16 19:21:34,198 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 85 selfloop transitions, 5 changer transitions 0/162 dead transitions. [2024-11-16 19:21:34,198 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 162 transitions, 536 flow [2024-11-16 19:21:34,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-16 19:21:34,199 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-16 19:21:34,200 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 525 transitions. [2024-11-16 19:21:34,201 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4206730769230769 [2024-11-16 19:21:34,201 INFO L175 Difference]: Start difference. First operand has 157 places, 159 transitions, 344 flow. Second operand 6 states and 525 transitions. [2024-11-16 19:21:34,201 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 162 transitions, 536 flow [2024-11-16 19:21:34,203 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 161 places, 162 transitions, 534 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:34,205 INFO L231 Difference]: Finished difference. Result has 164 places, 162 transitions, 378 flow [2024-11-16 19:21:34,206 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=342, PETRI_DIFFERENCE_MINUEND_PLACES=156, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=378, PETRI_PLACES=164, PETRI_TRANSITIONS=162} [2024-11-16 19:21:34,207 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 11 predicate places. [2024-11-16 19:21:34,208 INFO L471 AbstractCegarLoop]: Abstraction has has 164 places, 162 transitions, 378 flow [2024-11-16 19:21:34,208 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 73.85714285714286) internal successors, (517), 7 states have internal predecessors, (517), 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 19:21:34,208 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:34,208 INFO L204 CegarLoopForPetriNet]: trace histogram [5, 4, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:34,227 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 19:21:34,409 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 19:21:34,409 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:21:34,410 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:34,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1872891312, now seen corresponding path program 2 times [2024-11-16 19:21:34,411 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:34,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844294688] [2024-11-16 19:21:34,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:34,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:34,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:34,557 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 19:21:34,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844294688] [2024-11-16 19:21:34,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844294688] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 19:21:34,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1197683619] [2024-11-16 19:21:34,559 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 19:21:34,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 19:21:34,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 19:21:34,561 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 19:21:34,562 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 19:21:34,681 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 19:21:34,681 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 19:21:34,682 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 19:21:34,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 19:21:34,719 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 19:21:34,719 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 19:21:34,794 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 19:21:34,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1197683619] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 19:21:34,795 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 19:21:34,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 12 [2024-11-16 19:21:34,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1957078399] [2024-11-16 19:21:34,795 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 19:21:34,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-16 19:21:34,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:34,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-16 19:21:34,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2024-11-16 19:21:34,799 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 72 out of 208 [2024-11-16 19:21:34,800 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 164 places, 162 transitions, 378 flow. Second operand has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 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 19:21:34,800 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:34,801 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 72 of 208 [2024-11-16 19:21:34,801 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-16 19:21:40,357 INFO L124 PetriNetUnfolderBase]: 33197/66639 cut-off events. [2024-11-16 19:21:40,357 INFO L125 PetriNetUnfolderBase]: For 258/258 co-relation queries the response was YES. [2024-11-16 19:21:40,617 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114435 conditions, 66639 events. 33197/66639 cut-off events. For 258/258 co-relation queries the response was YES. Maximal size of possible extension queue 2118. Compared 721245 event pairs, 28520 based on Foata normal form. 6/62226 useless extension candidates. Maximal degree in co-relation 114425. Up to 47642 conditions per place. [2024-11-16 19:21:40,825 INFO L140 encePairwiseOnDemand]: 205/208 looper letters, 85 selfloop transitions, 11 changer transitions 0/168 dead transitions. [2024-11-16 19:21:40,825 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 175 places, 168 transitions, 606 flow [2024-11-16 19:21:40,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-16 19:21:40,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-11-16 19:21:40,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 966 transitions. [2024-11-16 19:21:40,828 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3870192307692308 [2024-11-16 19:21:40,829 INFO L175 Difference]: Start difference. First operand has 164 places, 162 transitions, 378 flow. Second operand 12 states and 966 transitions. [2024-11-16 19:21:40,829 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 175 places, 168 transitions, 606 flow [2024-11-16 19:21:40,832 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 174 places, 168 transitions, 598 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-16 19:21:40,834 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 454 flow [2024-11-16 19:21:40,834 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=208, PETRI_DIFFERENCE_MINUEND_FLOW=370, PETRI_DIFFERENCE_MINUEND_PLACES=163, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=162, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=6, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=156, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=454, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-11-16 19:21:40,835 INFO L277 CegarLoopForPetriNet]: 153 programPoint places, 27 predicate places. [2024-11-16 19:21:40,835 INFO L471 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 454 flow [2024-11-16 19:21:40,836 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 73.46153846153847) internal successors, (955), 13 states have internal predecessors, (955), 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 19:21:40,836 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:40,836 INFO L204 CegarLoopForPetriNet]: trace histogram [11, 10, 3, 3, 2, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:40,849 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 19:21:41,036 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 19:21:41,037 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 3 more)] === [2024-11-16 19:21:41,037 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:41,037 INFO L85 PathProgramCache]: Analyzing trace with hash 1869779286, now seen corresponding path program 3 times [2024-11-16 19:21:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:41,038 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1431491748] [2024-11-16 19:21:41,038 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:41,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:41,080 INFO L356 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2024-11-16 19:21:41,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2024-11-16 19:21:41,120 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2024-11-16 19:21:41,121 INFO L325 BasicCegarLoop]: Counterexample is feasible [2024-11-16 19:21:41,122 INFO L782 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (5 of 6 remaining) [2024-11-16 19:21:41,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (4 of 6 remaining) [2024-11-16 19:21:41,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 6 remaining) [2024-11-16 19:21:41,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 6 remaining) [2024-11-16 19:21:41,122 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (1 of 6 remaining) [2024-11-16 19:21:41,123 INFO L782 garLoopResultBuilder]: Registering result UNKNOWN for location t_funErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 6 remaining) [2024-11-16 19:21:41,123 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-16 19:21:41,123 INFO L407 BasicCegarLoop]: Path program histogram: [3, 1, 1] [2024-11-16 19:21:41,124 WARN L244 ceAbstractionStarter]: 2 thread instances were not sufficient, I will increase this number and restart the analysis [2024-11-16 19:21:41,124 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 3 thread instances. [2024-11-16 19:21:41,171 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-16 19:21:41,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 191 places, 259 transitions, 545 flow [2024-11-16 19:21:41,224 INFO L124 PetriNetUnfolderBase]: 168/587 cut-off events. [2024-11-16 19:21:41,224 INFO L125 PetriNetUnfolderBase]: For 19/19 co-relation queries the response was YES. [2024-11-16 19:21:41,233 INFO L83 FinitePrefix]: Finished finitePrefix Result has 612 conditions, 587 events. 168/587 cut-off events. For 19/19 co-relation queries the response was YES. Maximal size of possible extension queue 30. Compared 3323 event pairs, 1 based on Foata normal form. 0/404 useless extension candidates. Maximal degree in co-relation 420. Up to 16 conditions per place. [2024-11-16 19:21:41,234 INFO L82 GeneralOperation]: Start removeDead. Operand has 191 places, 259 transitions, 545 flow [2024-11-16 19:21:41,240 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 191 places, 259 transitions, 545 flow [2024-11-16 19:21:41,241 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 19:21:41,242 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;@1af513fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 19:21:41,242 INFO L334 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2024-11-16 19:21:41,250 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-16 19:21:41,250 INFO L124 PetriNetUnfolderBase]: 26/120 cut-off events. [2024-11-16 19:21:41,250 INFO L125 PetriNetUnfolderBase]: For 4/4 co-relation queries the response was YES. [2024-11-16 19:21:41,250 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-16 19:21:41,250 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-16 19:21:41,250 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 4 more)] === [2024-11-16 19:21:41,251 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 19:21:41,251 INFO L85 PathProgramCache]: Analyzing trace with hash 64124629, now seen corresponding path program 1 times [2024-11-16 19:21:41,251 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 19:21:41,251 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581701427] [2024-11-16 19:21:41,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 19:21:41,252 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 19:21:41,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 19:21:41,276 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 19:21:41,276 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 19:21:41,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581701427] [2024-11-16 19:21:41,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581701427] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 19:21:41,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 19:21:41,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 19:21:41,277 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764925306] [2024-11-16 19:21:41,277 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 19:21:41,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 19:21:41,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 19:21:41,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 19:21:41,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 19:21:41,279 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 90 out of 259 [2024-11-16 19:21:41,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 259 transitions, 545 flow. Second operand has 2 states, 2 states have (on average 95.5) internal successors, (191), 2 states have internal predecessors, (191), 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 19:21:41,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-16 19:21:41,280 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 90 of 259 [2024-11-16 19:21:41,280 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand