./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/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 ../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c -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 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:29:00,997 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:29:01,062 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:29:01,067 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:29:01,068 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:29:01,091 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:29:01,091 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:29:01,091 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:29:01,092 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:29:01,095 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:29:01,095 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:29:01,095 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:29:01,096 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:29:01,097 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:29:01,097 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:29:01,098 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:29:01,098 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:29:01,098 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:29:01,098 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:29:01,098 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:29:01,099 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:29:01,099 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:29:01,099 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:29:01,099 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:29:01,099 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:29:01,100 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:29:01,100 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:29:01,100 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:29:01,101 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:29:01,101 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:29:01,102 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:29:01,102 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:29:01,102 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:01,102 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:29:01,102 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:29:01,102 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:29:01,103 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:29:01,103 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:29:01,103 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:29:01,103 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:29:01,103 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:29:01,104 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:29:01,104 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:29:01,104 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 55dce27fdc9c44ff408174badf0a943270d2adadc96357bb37463f058a6a7cee [2024-01-27 15:29:01,324 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:29:01,347 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:29:01,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:29:01,350 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:29:01,351 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:29:01,352 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2024-01-27 15:29:02,386 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:29:02,547 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:29:02,547 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c [2024-01-27 15:29:02,555 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938bb9b13/8a379a4c6b1e4a9dbbb2467740b44cda/FLAG17f0c9f06 [2024-01-27 15:29:02,565 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/938bb9b13/8a379a4c6b1e4a9dbbb2467740b44cda [2024-01-27 15:29:02,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:29:02,569 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:29:02,570 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:02,570 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:29:02,574 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:29:02,575 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,575 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5dee86ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02, skipping insertion in model container [2024-01-27 15:29:02,575 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,591 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:29:02,708 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2918,2931] [2024-01-27 15:29:02,717 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:02,728 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:29:02,762 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-time-subst.wvr.c[2918,2931] [2024-01-27 15:29:02,767 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:02,780 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:29:02,780 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02 WrapperNode [2024-01-27 15:29:02,780 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:02,782 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:02,782 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:29:02,782 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:29:02,788 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,805 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,844 INFO L138 Inliner]: procedures = 23, calls = 39, calls flagged for inlining = 11, calls inlined = 21, statements flattened = 225 [2024-01-27 15:29:02,845 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:02,845 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:29:02,845 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:29:02,846 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:29:02,854 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,855 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,868 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,907 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-01-27 15:29:02,908 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,908 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,912 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,914 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,916 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,917 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,919 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:29:02,920 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:29:02,920 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:29:02,920 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:29:02,921 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (1/1) ... [2024-01-27 15:29:02,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:02,955 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:02,966 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) [2024-01-27 15:29:02,982 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 [2024-01-27 15:29:03,017 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:29:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:29:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:29:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:29:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:29:03,018 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-01-27 15:29:03,018 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-01-27 15:29:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:29:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:29:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:29:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:29:03,020 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-01-27 15:29:03,021 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-01-27 15:29:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:29:03,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:29:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:29:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:29:03,022 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:29:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:29:03,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:29:03,026 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:29:03,138 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:29:03,140 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:29:03,475 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:29:03,476 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:29:03,757 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:29:03,757 INFO L320 CfgBuilder]: Removed 0 assume(true) statements. [2024-01-27 15:29:03,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:03 BoogieIcfgContainer [2024-01-27 15:29:03,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:29:03,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:29:03,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:29:03,762 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:29:03,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:29:02" (1/3) ... [2024-01-27 15:29:03,763 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d764b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:03, skipping insertion in model container [2024-01-27 15:29:03,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:02" (2/3) ... [2024-01-27 15:29:03,765 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@55d764b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:03, skipping insertion in model container [2024-01-27 15:29:03,765 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:03" (3/3) ... [2024-01-27 15:29:03,766 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-time-subst.wvr.c [2024-01-27 15:29:03,772 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:29:03,779 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:29:03,779 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:29:03,779 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:29:03,844 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-01-27 15:29:03,875 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 37 places, 27 transitions, 75 flow [2024-01-27 15:29:03,905 INFO L124 PetriNetUnfolderBase]: 0/24 cut-off events. [2024-01-27 15:29:03,906 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:03,907 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 0/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 20 event pairs, 0 based on Foata normal form. 0/23 useless extension candidates. Maximal degree in co-relation 0. Up to 2 conditions per place. [2024-01-27 15:29:03,907 INFO L82 GeneralOperation]: Start removeDead. Operand has 37 places, 27 transitions, 75 flow [2024-01-27 15:29:03,909 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 23 transitions, 64 flow [2024-01-27 15:29:03,918 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:29:03,925 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=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;@740709c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:29:03,925 INFO L358 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-01-27 15:29:03,934 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:29:03,935 INFO L124 PetriNetUnfolderBase]: 0/22 cut-off events. [2024-01-27 15:29:03,935 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-01-27 15:29:03,935 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:03,941 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:03,941 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:03,945 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:03,945 INFO L85 PathProgramCache]: Analyzing trace with hash -1930434512, now seen corresponding path program 1 times [2024-01-27 15:29:03,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:03,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823113328] [2024-01-27 15:29:03,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:03,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:04,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:05,781 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:05,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:05,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823113328] [2024-01-27 15:29:05,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823113328] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:05,783 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:05,783 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:05,784 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1812339847] [2024-01-27 15:29:05,785 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:05,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:05,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:05,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:05,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:05,817 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:05,820 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 23 transitions, 64 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:05,820 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:05,821 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:05,821 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:06,184 INFO L124 PetriNetUnfolderBase]: 202/385 cut-off events. [2024-01-27 15:29:06,184 INFO L125 PetriNetUnfolderBase]: For 59/59 co-relation queries the response was YES. [2024-01-27 15:29:06,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 817 conditions, 385 events. 202/385 cut-off events. For 59/59 co-relation queries the response was YES. Maximal size of possible extension queue 32. Compared 1540 event pairs, 48 based on Foata normal form. 1/383 useless extension candidates. Maximal degree in co-relation 575. Up to 128 conditions per place. [2024-01-27 15:29:06,191 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 2 changer transitions 10/52 dead transitions. [2024-01-27 15:29:06,191 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 52 transitions, 242 flow [2024-01-27 15:29:06,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:06,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:06,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-27 15:29:06,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-27 15:29:06,202 INFO L175 Difference]: Start difference. First operand has 33 places, 23 transitions, 64 flow. Second operand 5 states and 84 transitions. [2024-01-27 15:29:06,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 52 transitions, 242 flow [2024-01-27 15:29:06,207 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:06,209 INFO L231 Difference]: Finished difference. Result has 34 places, 24 transitions, 67 flow [2024-01-27 15:29:06,210 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=52, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=23, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=67, PETRI_PLACES=34, PETRI_TRANSITIONS=24} [2024-01-27 15:29:06,213 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 1 predicate places. [2024-01-27 15:29:06,213 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 24 transitions, 67 flow [2024-01-27 15:29:06,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:06,213 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:06,214 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:06,214 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:29:06,214 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:06,215 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:06,215 INFO L85 PathProgramCache]: Analyzing trace with hash 429915562, now seen corresponding path program 2 times [2024-01-27 15:29:06,215 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:06,215 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894715017] [2024-01-27 15:29:06,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:06,216 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:06,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:06,842 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:06,842 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:06,843 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894715017] [2024-01-27 15:29:06,843 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894715017] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:06,843 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:06,843 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:06,843 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1228937711] [2024-01-27 15:29:06,843 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:06,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:06,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:06,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:06,847 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:06,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 24 transitions, 67 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:06,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:06,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:06,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:07,045 INFO L124 PetriNetUnfolderBase]: 222/422 cut-off events. [2024-01-27 15:29:07,045 INFO L125 PetriNetUnfolderBase]: For 198/198 co-relation queries the response was YES. [2024-01-27 15:29:07,046 INFO L83 FinitePrefix]: Finished finitePrefix Result has 975 conditions, 422 events. 222/422 cut-off events. For 198/198 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1817 event pairs, 24 based on Foata normal form. 1/421 useless extension candidates. Maximal degree in co-relation 961. Up to 174 conditions per place. [2024-01-27 15:29:07,048 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 2 changer transitions 14/56 dead transitions. [2024-01-27 15:29:07,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 56 transitions, 258 flow [2024-01-27 15:29:07,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:07,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:07,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 86 transitions. [2024-01-27 15:29:07,050 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6370370370370371 [2024-01-27 15:29:07,050 INFO L175 Difference]: Start difference. First operand has 34 places, 24 transitions, 67 flow. Second operand 5 states and 86 transitions. [2024-01-27 15:29:07,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 56 transitions, 258 flow [2024-01-27 15:29:07,051 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 56 transitions, 251 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:07,052 INFO L231 Difference]: Finished difference. Result has 38 places, 24 transitions, 77 flow [2024-01-27 15:29:07,052 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=38, PETRI_TRANSITIONS=24} [2024-01-27 15:29:07,056 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-27 15:29:07,056 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 24 transitions, 77 flow [2024-01-27 15:29:07,056 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:07,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:07,057 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:07,057 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:29:07,068 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:07,068 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:07,068 INFO L85 PathProgramCache]: Analyzing trace with hash -1156821912, now seen corresponding path program 3 times [2024-01-27 15:29:07,069 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:07,069 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491265014] [2024-01-27 15:29:07,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:07,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:07,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:07,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:07,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:07,823 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491265014] [2024-01-27 15:29:07,824 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491265014] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:07,824 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:07,824 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:07,824 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864058980] [2024-01-27 15:29:07,824 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:07,825 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:07,825 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:07,825 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:07,825 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:07,826 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:07,827 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 24 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:07,827 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:07,827 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:07,827 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:08,080 INFO L124 PetriNetUnfolderBase]: 176/348 cut-off events. [2024-01-27 15:29:08,080 INFO L125 PetriNetUnfolderBase]: For 347/347 co-relation queries the response was YES. [2024-01-27 15:29:08,081 INFO L83 FinitePrefix]: Finished finitePrefix Result has 871 conditions, 348 events. 176/348 cut-off events. For 347/347 co-relation queries the response was YES. Maximal size of possible extension queue 27. Compared 1357 event pairs, 38 based on Foata normal form. 1/347 useless extension candidates. Maximal degree in co-relation 855. Up to 126 conditions per place. [2024-01-27 15:29:08,082 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 36 selfloop transitions, 3 changer transitions 10/53 dead transitions. [2024-01-27 15:29:08,082 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 53 transitions, 257 flow [2024-01-27 15:29:08,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:08,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:08,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-27 15:29:08,084 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-27 15:29:08,084 INFO L175 Difference]: Start difference. First operand has 38 places, 24 transitions, 77 flow. Second operand 5 states and 84 transitions. [2024-01-27 15:29:08,084 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 53 transitions, 257 flow [2024-01-27 15:29:08,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 53 transitions, 238 flow, removed 7 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:08,086 INFO L231 Difference]: Finished difference. Result has 40 places, 25 transitions, 88 flow [2024-01-27 15:29:08,086 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=24, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=88, PETRI_PLACES=40, PETRI_TRANSITIONS=25} [2024-01-27 15:29:08,087 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 7 predicate places. [2024-01-27 15:29:08,087 INFO L495 AbstractCegarLoop]: Abstraction has has 40 places, 25 transitions, 88 flow [2024-01-27 15:29:08,087 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:08,087 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:08,087 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:08,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:29:08,088 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:08,088 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:08,088 INFO L85 PathProgramCache]: Analyzing trace with hash 1250435144, now seen corresponding path program 4 times [2024-01-27 15:29:08,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:08,088 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1868179683] [2024-01-27 15:29:08,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:08,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:08,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:08,646 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:08,647 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:08,647 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1868179683] [2024-01-27 15:29:08,650 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1868179683] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:08,650 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:08,650 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:08,650 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [711910296] [2024-01-27 15:29:08,650 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:08,651 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:08,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:08,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:08,654 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:08,654 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:08,654 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 25 transitions, 88 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:08,655 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:08,655 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:08,655 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:08,806 INFO L124 PetriNetUnfolderBase]: 186/368 cut-off events. [2024-01-27 15:29:08,806 INFO L125 PetriNetUnfolderBase]: For 410/410 co-relation queries the response was YES. [2024-01-27 15:29:08,807 INFO L83 FinitePrefix]: Finished finitePrefix Result has 991 conditions, 368 events. 186/368 cut-off events. For 410/410 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 1500 event pairs, 32 based on Foata normal form. 1/367 useless extension candidates. Maximal degree in co-relation 975. Up to 158 conditions per place. [2024-01-27 15:29:08,808 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 34 selfloop transitions, 2 changer transitions 14/54 dead transitions. [2024-01-27 15:29:08,808 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 275 flow [2024-01-27 15:29:08,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:08,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:08,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 84 transitions. [2024-01-27 15:29:08,811 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6222222222222222 [2024-01-27 15:29:08,811 INFO L175 Difference]: Start difference. First operand has 40 places, 25 transitions, 88 flow. Second operand 5 states and 84 transitions. [2024-01-27 15:29:08,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 275 flow [2024-01-27 15:29:08,814 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 41 places, 54 transitions, 268 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:08,815 INFO L231 Difference]: Finished difference. Result has 44 places, 25 transitions, 97 flow [2024-01-27 15:29:08,816 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=84, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=97, PETRI_PLACES=44, PETRI_TRANSITIONS=25} [2024-01-27 15:29:08,817 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 11 predicate places. [2024-01-27 15:29:08,817 INFO L495 AbstractCegarLoop]: Abstraction has has 44 places, 25 transitions, 97 flow [2024-01-27 15:29:08,817 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:08,817 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:08,817 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:08,818 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:29:08,818 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:08,819 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:08,819 INFO L85 PathProgramCache]: Analyzing trace with hash 177231796, now seen corresponding path program 5 times [2024-01-27 15:29:08,819 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:08,819 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [946580537] [2024-01-27 15:29:08,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:08,819 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:09,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:09,396 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:09,396 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [946580537] [2024-01-27 15:29:09,396 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [946580537] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:09,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:09,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:09,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744079711] [2024-01-27 15:29:09,397 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:09,397 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:09,398 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:09,398 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:09,398 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:09,399 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:09,399 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 25 transitions, 97 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:09,400 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:09,400 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:09,400 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:09,582 INFO L124 PetriNetUnfolderBase]: 128/261 cut-off events. [2024-01-27 15:29:09,583 INFO L125 PetriNetUnfolderBase]: For 497/497 co-relation queries the response was YES. [2024-01-27 15:29:09,583 INFO L83 FinitePrefix]: Finished finitePrefix Result has 753 conditions, 261 events. 128/261 cut-off events. For 497/497 co-relation queries the response was YES. Maximal size of possible extension queue 20. Compared 936 event pairs, 22 based on Foata normal form. 1/260 useless extension candidates. Maximal degree in co-relation 739. Up to 82 conditions per place. [2024-01-27 15:29:09,584 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 23 selfloop transitions, 1 changer transitions 23/51 dead transitions. [2024-01-27 15:29:09,584 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 51 transitions, 258 flow [2024-01-27 15:29:09,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:09,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:09,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 82 transitions. [2024-01-27 15:29:09,585 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.6074074074074074 [2024-01-27 15:29:09,586 INFO L175 Difference]: Start difference. First operand has 44 places, 25 transitions, 97 flow. Second operand 5 states and 82 transitions. [2024-01-27 15:29:09,586 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 51 transitions, 258 flow [2024-01-27 15:29:09,587 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 51 transitions, 246 flow, removed 4 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:09,587 INFO L231 Difference]: Finished difference. Result has 45 places, 23 transitions, 77 flow [2024-01-27 15:29:09,587 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=25, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=77, PETRI_PLACES=45, PETRI_TRANSITIONS=23} [2024-01-27 15:29:09,588 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 12 predicate places. [2024-01-27 15:29:09,588 INFO L495 AbstractCegarLoop]: Abstraction has has 45 places, 23 transitions, 77 flow [2024-01-27 15:29:09,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:09,588 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:09,589 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:09,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-01-27 15:29:09,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-01-27 15:29:09,589 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:09,589 INFO L85 PathProgramCache]: Analyzing trace with hash -630220704, now seen corresponding path program 6 times [2024-01-27 15:29:09,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:09,590 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1071947622] [2024-01-27 15:29:09,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:09,590 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:09,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:10,171 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:10,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:10,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1071947622] [2024-01-27 15:29:10,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1071947622] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:10,172 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:10,172 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:10,173 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422142932] [2024-01-27 15:29:10,173 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:10,173 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:10,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:10,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:10,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:10,174 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-01-27 15:29:10,174 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 45 places, 23 transitions, 77 flow. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:10,174 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:10,174 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-01-27 15:29:10,175 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:10,384 INFO L124 PetriNetUnfolderBase]: 60/132 cut-off events. [2024-01-27 15:29:10,385 INFO L125 PetriNetUnfolderBase]: For 214/214 co-relation queries the response was YES. [2024-01-27 15:29:10,385 INFO L83 FinitePrefix]: Finished finitePrefix Result has 382 conditions, 132 events. 60/132 cut-off events. For 214/214 co-relation queries the response was YES. Maximal size of possible extension queue 10. Compared 348 event pairs, 10 based on Foata normal form. 1/132 useless extension candidates. Maximal degree in co-relation 373. Up to 67 conditions per place. [2024-01-27 15:29:10,386 INFO L140 encePairwiseOnDemand]: 23/27 looper letters, 0 selfloop transitions, 0 changer transitions 33/33 dead transitions. [2024-01-27 15:29:10,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 33 transitions, 163 flow [2024-01-27 15:29:10,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:10,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:10,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 66 transitions. [2024-01-27 15:29:10,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4888888888888889 [2024-01-27 15:29:10,387 INFO L175 Difference]: Start difference. First operand has 45 places, 23 transitions, 77 flow. Second operand 5 states and 66 transitions. [2024-01-27 15:29:10,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 33 transitions, 163 flow [2024-01-27 15:29:10,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 33 transitions, 149 flow, removed 3 selfloop flow, removed 5 redundant places. [2024-01-27 15:29:10,388 INFO L231 Difference]: Finished difference. Result has 38 places, 0 transitions, 0 flow [2024-01-27 15:29:10,388 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=27, PETRI_DIFFERENCE_MINUEND_FLOW=60, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=21, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=0, PETRI_PLACES=38, PETRI_TRANSITIONS=0} [2024-01-27 15:29:10,389 INFO L281 CegarLoopForPetriNet]: 33 programPoint places, 5 predicate places. [2024-01-27 15:29:10,389 INFO L495 AbstractCegarLoop]: Abstraction has has 38 places, 0 transitions, 0 flow [2024-01-27 15:29:10,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 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) [2024-01-27 15:29:10,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (3 of 4 remaining) [2024-01-27 15:29:10,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (2 of 4 remaining) [2024-01-27 15:29:10,391 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (1 of 4 remaining) [2024-01-27 15:29:10,392 INFO L805 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (0 of 4 remaining) [2024-01-27 15:29:10,392 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:29:10,392 INFO L445 BasicCegarLoop]: Path program histogram: [6] [2024-01-27 15:29:10,394 INFO L229 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-01-27 15:29:10,394 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2024-01-27 15:29:10,398 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.01 03:29:10 BasicIcfg [2024-01-27 15:29:10,398 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-01-27 15:29:10,399 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-01-27 15:29:10,399 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-01-27 15:29:10,399 INFO L274 PluginConnector]: Witness Printer initialized [2024-01-27 15:29:10,399 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:03" (3/4) ... [2024-01-27 15:29:10,400 INFO L137 WitnessPrinter]: Generating witness for correct program [2024-01-27 15:29:10,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread1 [2024-01-27 15:29:10,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread2 [2024-01-27 15:29:10,403 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure thread3 [2024-01-27 15:29:10,406 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 87 nodes and edges [2024-01-27 15:29:10,407 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 19 nodes and edges [2024-01-27 15:29:10,407 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2024-01-27 15:29:10,407 INFO L943 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2024-01-27 15:29:10,471 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-01-27 15:29:10,472 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-01-27 15:29:10,472 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-01-27 15:29:10,472 INFO L158 Benchmark]: Toolchain (without parser) took 7903.41ms. Allocated memory was 159.4MB in the beginning and 515.9MB in the end (delta: 356.5MB). Free memory was 86.4MB in the beginning and 442.9MB in the end (delta: -356.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,473 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:29:10,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 210.72ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 74.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,473 INFO L158 Benchmark]: Boogie Procedure Inliner took 62.93ms. Allocated memory is still 159.4MB. Free memory was 74.2MB in the beginning and 71.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,473 INFO L158 Benchmark]: Boogie Preprocessor took 73.83ms. Allocated memory is still 159.4MB. Free memory was 71.8MB in the beginning and 127.3MB in the end (delta: -55.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,473 INFO L158 Benchmark]: RCFGBuilder took 838.49ms. Allocated memory was 159.4MB in the beginning and 220.2MB in the end (delta: 60.8MB). Free memory was 127.3MB in the beginning and 105.0MB in the end (delta: 22.2MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,474 INFO L158 Benchmark]: TraceAbstraction took 6638.17ms. Allocated memory was 220.2MB in the beginning and 515.9MB in the end (delta: 295.7MB). Free memory was 104.0MB in the beginning and 448.2MB in the end (delta: -344.2MB). There was no memory consumed. Max. memory is 16.1GB. [2024-01-27 15:29:10,474 INFO L158 Benchmark]: Witness Printer took 73.35ms. Allocated memory is still 515.9MB. Free memory was 448.2MB in the beginning and 442.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. [2024-01-27 15:29:10,475 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 159.4MB. Free memory is still 109.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 210.72ms. Allocated memory is still 159.4MB. Free memory was 86.2MB in the beginning and 74.2MB in the end (delta: 12.1MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 62.93ms. Allocated memory is still 159.4MB. Free memory was 74.2MB in the beginning and 71.8MB in the end (delta: 2.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 73.83ms. Allocated memory is still 159.4MB. Free memory was 71.8MB in the beginning and 127.3MB in the end (delta: -55.6MB). Peak memory consumption was 6.6MB. Max. memory is 16.1GB. * RCFGBuilder took 838.49ms. Allocated memory was 159.4MB in the beginning and 220.2MB in the end (delta: 60.8MB). Free memory was 127.3MB in the beginning and 105.0MB in the end (delta: 22.2MB). Peak memory consumption was 87.0MB. Max. memory is 16.1GB. * TraceAbstraction took 6638.17ms. Allocated memory was 220.2MB in the beginning and 515.9MB in the end (delta: 295.7MB). Free memory was 104.0MB in the beginning and 448.2MB in the end (delta: -344.2MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 73.35ms. Allocated memory is still 515.9MB. Free memory was 448.2MB in the beginning and 442.9MB in the end (delta: 5.2MB). Peak memory consumption was 6.3MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 93]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 7 procedures, 43 locations, 4 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 6.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 6, EmptinessCheckTime: 0.0s, AutomataDifference: 1.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 149 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 149 mSDsluCounter, 0 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 0 mSDsCounter, 0 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 684 IncrementalHoareTripleChecker+Invalid, 684 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 0 mSolverCounterUnsat, 0 mSDtfsCounter, 684 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=4, InterpolantAutomatonStates: 30, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 4.5s InterpolantComputationTime, 138 NumberOfCodeBlocks, 138 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 132 ConstructedInterpolants, 0 QuantifiedInterpolants, 4498 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-01-27 15:29:10,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE