./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c --full-output --traceabstraction.positions.where.we.compute.the.hoare.annotation All --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 273a578a 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-array-int-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 d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 --traceabstraction.positions.where.we.compute.the.hoare.annotation All --- Real Ultimate output --- This is Ultimate 0.2.4-tmp.dk.owicki-witnesses-273a578-m [2024-02-19 14:22:01,409 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:22:01,478 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:22:01,482 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:22:01,483 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:22:01,508 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:22:01,509 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:22:01,509 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:22:01,510 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:22:01,513 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:22:01,513 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:22:01,513 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:22:01,513 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:22:01,514 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:22:01,515 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:22:01,515 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:22:01,515 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:22:01,515 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:22:01,516 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:22:01,516 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:22:01,516 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:22:01,517 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:22:01,517 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:22:01,517 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:22:01,517 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:22:01,518 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:22:01,518 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:22:01,518 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:22:01,519 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:22:01,519 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:22:01,520 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:22:01,520 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:22:01,520 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:22:01,521 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:22:01,521 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:22:01,521 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:22:01,522 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:22:01,522 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:22:01,522 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:22:01,522 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:22:01,522 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:22:01,523 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:22:01,523 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:22:01,523 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d6aa6ef36156b11d9501f41a7beea3c182ea6a120d3ddbfd55ede5953f5f6e32 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:22:01,787 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:22:01,814 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:22:01,816 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:22:01,817 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:22:01,818 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:22:01,818 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2024-02-19 14:22:03,062 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:22:03,231 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:22:03,231 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-array-int-subst.wvr.c [2024-02-19 14:22:03,242 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7948a195c/9ea5d7487100416a9ae3a9cba217416b/FLAG27e568fae [2024-02-19 14:22:03,256 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7948a195c/9ea5d7487100416a9ae3a9cba217416b [2024-02-19 14:22:03,258 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:22:03,259 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:22:03,263 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:22:03,263 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:22:03,267 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:22:03,268 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,268 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@77dfa917 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03, skipping insertion in model container [2024-02-19 14:22:03,268 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,290 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:22:03,469 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-array-int-subst.wvr.c[2781,2794] [2024-02-19 14:22:03,483 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:22:03,491 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:22:03,524 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-array-int-subst.wvr.c[2781,2794] [2024-02-19 14:22:03,530 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:22:03,544 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:22:03,544 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03 WrapperNode [2024-02-19 14:22:03,545 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:22:03,545 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:22:03,545 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:22:03,546 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:22:03,550 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,568 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,602 INFO L138 Inliner]: procedures = 26, calls = 50, calls flagged for inlining = 14, calls inlined = 22, statements flattened = 289 [2024-02-19 14:22:03,604 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:22:03,604 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:22:03,605 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:22:03,605 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:22:03,613 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,613 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,625 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,648 INFO L175 MemorySlicer]: Split 23 memory accesses to 5 slices as follows [2, 15, 2, 2, 2]. 65 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0, 0]. The 6 writes are split as follows [0, 3, 1, 1, 1]. [2024-02-19 14:22:03,648 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,648 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,654 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,658 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,659 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,660 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,662 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:22:03,663 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:22:03,663 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:22:03,663 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:22:03,664 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (1/1) ... [2024-02-19 14:22:03,669 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:22:03,676 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:03,687 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) [2024-02-19 14:22:03,704 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 [2024-02-19 14:22:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:22:03,725 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#4 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:22:03,726 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#4 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:22:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:22:03,727 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:22:03,727 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:22:03,728 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-02-19 14:22:03,728 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-02-19 14:22:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:22:03,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:22:03,729 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:22:03,730 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-19 14:22:03,821 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:22:03,823 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:22:04,159 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:22:04,159 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:22:04,465 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:22:04,465 INFO L320 CfgBuilder]: Removed 6 assume(true) statements. [2024-02-19 14:22:04,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:22:04 BoogieIcfgContainer [2024-02-19 14:22:04,466 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:22:04,467 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:22:04,467 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:22:04,470 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:22:04,470 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:22:03" (1/3) ... [2024-02-19 14:22:04,471 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692906ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:22:04, skipping insertion in model container [2024-02-19 14:22:04,471 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:22:03" (2/3) ... [2024-02-19 14:22:04,472 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@692906ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:22:04, skipping insertion in model container [2024-02-19 14:22:04,472 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:22:04" (3/3) ... [2024-02-19 14:22:04,473 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-array-int-subst.wvr.c [2024-02-19 14:22:04,489 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:22:04,489 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:22:04,489 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:22:04,560 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:22:04,591 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 43 places, 42 transitions, 105 flow [2024-02-19 14:22:04,622 INFO L124 PetriNetUnfolderBase]: 9/39 cut-off events. [2024-02-19 14:22:04,622 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:22:04,625 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52 conditions, 39 events. 9/39 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 3. Compared 33 event pairs, 0 based on Foata normal form. 0/29 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-02-19 14:22:04,626 INFO L82 GeneralOperation]: Start removeDead. Operand has 43 places, 42 transitions, 105 flow [2024-02-19 14:22:04,629 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 39 places, 38 transitions, 94 flow [2024-02-19 14:22:04,641 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:22:04,647 INFO L369 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=All, 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;@5c81e0e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:22:04,647 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:22:04,669 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:22:04,669 INFO L124 PetriNetUnfolderBase]: 9/37 cut-off events. [2024-02-19 14:22:04,669 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:22:04,672 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:04,673 INFO L234 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, 1, 1, 1] [2024-02-19 14:22:04,673 INFO L432 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)] === [2024-02-19 14:22:04,677 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:04,677 INFO L85 PathProgramCache]: Analyzing trace with hash 360711080, now seen corresponding path program 1 times [2024-02-19 14:22:04,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:04,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [405171515] [2024-02-19 14:22:04,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:04,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:04,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:05,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:05,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:05,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [405171515] [2024-02-19 14:22:05,529 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [405171515] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:05,529 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:05,529 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:22:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1393528515] [2024-02-19 14:22:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:05,536 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:05,540 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:05,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:05,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:22:05,563 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:05,565 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 38 transitions, 94 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-02-19 14:22:05,566 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:05,566 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:05,567 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:06,260 INFO L124 PetriNetUnfolderBase]: 3007/4115 cut-off events. [2024-02-19 14:22:06,260 INFO L125 PetriNetUnfolderBase]: For 327/327 co-relation queries the response was YES. [2024-02-19 14:22:06,265 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8475 conditions, 4115 events. 3007/4115 cut-off events. For 327/327 co-relation queries the response was YES. Maximal size of possible extension queue 181. Compared 17041 event pairs, 248 based on Foata normal form. 1/2974 useless extension candidates. Maximal degree in co-relation 4646. Up to 1349 conditions per place. [2024-02-19 14:22:06,280 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 126 selfloop transitions, 16 changer transitions 1/144 dead transitions. [2024-02-19 14:22:06,280 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 48 places, 144 transitions, 643 flow [2024-02-19 14:22:06,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-19 14:22:06,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-19 14:22:06,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 184 transitions. [2024-02-19 14:22:06,290 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-02-19 14:22:06,293 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 9 predicate places. [2024-02-19 14:22:06,293 INFO L507 AbstractCegarLoop]: Abstraction has has 48 places, 144 transitions, 643 flow [2024-02-19 14:22:06,293 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-02-19 14:22:06,294 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:06,294 INFO L234 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, 1, 1, 1] [2024-02-19 14:22:06,294 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:22:06,294 INFO L432 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)] === [2024-02-19 14:22:06,295 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:06,295 INFO L85 PathProgramCache]: Analyzing trace with hash 184401718, now seen corresponding path program 2 times [2024-02-19 14:22:06,295 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:06,296 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1567676851] [2024-02-19 14:22:06,296 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:06,296 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:06,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:06,795 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:06,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:06,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1567676851] [2024-02-19 14:22:06,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1567676851] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:06,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:06,796 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:22:06,796 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732721105] [2024-02-19 14:22:06,796 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:06,797 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:06,797 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:06,797 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:06,798 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-02-19 14:22:06,798 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:06,798 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 48 places, 144 transitions, 643 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-02-19 14:22:06,798 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:06,798 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:06,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:07,365 INFO L124 PetriNetUnfolderBase]: 3361/4649 cut-off events. [2024-02-19 14:22:07,366 INFO L125 PetriNetUnfolderBase]: For 387/387 co-relation queries the response was YES. [2024-02-19 14:22:07,369 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14208 conditions, 4649 events. 3361/4649 cut-off events. For 387/387 co-relation queries the response was YES. Maximal size of possible extension queue 207. Compared 19950 event pairs, 248 based on Foata normal form. 1/3404 useless extension candidates. Maximal degree in co-relation 8273. Up to 1985 conditions per place. [2024-02-19 14:22:07,385 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 174 selfloop transitions, 15 changer transitions 2/192 dead transitions. [2024-02-19 14:22:07,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 56 places, 192 transitions, 1238 flow [2024-02-19 14:22:07,386 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:22:07,386 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:22:07,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 164 transitions. [2024-02-19 14:22:07,388 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43386243386243384 [2024-02-19 14:22:07,388 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 17 predicate places. [2024-02-19 14:22:07,388 INFO L507 AbstractCegarLoop]: Abstraction has has 56 places, 192 transitions, 1238 flow [2024-02-19 14:22:07,389 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 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) [2024-02-19 14:22:07,389 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:07,389 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:07,389 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:22:07,389 INFO L432 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)] === [2024-02-19 14:22:07,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:07,390 INFO L85 PathProgramCache]: Analyzing trace with hash -1935782836, now seen corresponding path program 1 times [2024-02-19 14:22:07,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:07,390 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [418720763] [2024-02-19 14:22:07,390 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:07,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:07,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:07,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:07,521 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:07,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [418720763] [2024-02-19 14:22:07,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [418720763] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:07,523 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1775238328] [2024-02-19 14:22:07,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:07,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:07,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:07,527 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) [2024-02-19 14:22:07,566 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-19 14:22:07,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:07,644 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 14:22:07,648 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:07,726 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:07,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:07,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1775238328] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:07,788 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:07,788 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 12 [2024-02-19 14:22:07,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1840704592] [2024-02-19 14:22:07,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:07,789 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:22:07,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:07,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:22:07,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:22:07,790 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:07,790 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 56 places, 192 transitions, 1238 flow. Second operand has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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) [2024-02-19 14:22:07,790 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:07,790 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:07,790 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:08,699 INFO L124 PetriNetUnfolderBase]: 5851/8076 cut-off events. [2024-02-19 14:22:08,699 INFO L125 PetriNetUnfolderBase]: For 710/710 co-relation queries the response was YES. [2024-02-19 14:22:08,706 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32797 conditions, 8076 events. 5851/8076 cut-off events. For 710/710 co-relation queries the response was YES. Maximal size of possible extension queue 333. Compared 37796 event pairs, 662 based on Foata normal form. 1/5919 useless extension candidates. Maximal degree in co-relation 11004. Up to 4642 conditions per place. [2024-02-19 14:22:08,752 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 293 selfloop transitions, 10 changer transitions 13/317 dead transitions. [2024-02-19 14:22:08,752 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 317 transitions, 2689 flow [2024-02-19 14:22:08,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:22:08,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:22:08,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-02-19 14:22:08,754 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5408163265306123 [2024-02-19 14:22:08,755 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 23 predicate places. [2024-02-19 14:22:08,755 INFO L507 AbstractCegarLoop]: Abstraction has has 62 places, 317 transitions, 2689 flow [2024-02-19 14:22:08,755 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 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) [2024-02-19 14:22:08,755 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:08,755 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:08,770 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-02-19 14:22:08,968 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:08,969 INFO L432 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)] === [2024-02-19 14:22:08,970 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:08,970 INFO L85 PathProgramCache]: Analyzing trace with hash 1859029634, now seen corresponding path program 1 times [2024-02-19 14:22:08,970 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:08,970 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1120829928] [2024-02-19 14:22:08,970 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:08,970 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:08,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:09,106 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:09,106 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1120829928] [2024-02-19 14:22:09,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1120829928] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:09,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1517340024] [2024-02-19 14:22:09,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:09,107 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:09,107 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:09,108 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) [2024-02-19 14:22:09,124 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-19 14:22:09,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:09,220 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 14:22:09,221 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:09,280 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:09,280 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:09,334 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1517340024] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:09,334 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:09,334 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5, 5] total 11 [2024-02-19 14:22:09,334 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [286116778] [2024-02-19 14:22:09,334 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:09,335 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:22:09,335 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:09,335 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:22:09,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:22:09,336 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:09,336 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 62 places, 317 transitions, 2689 flow. Second operand has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:22:09,336 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:09,336 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:09,336 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:10,187 INFO L124 PetriNetUnfolderBase]: 7299/10084 cut-off events. [2024-02-19 14:22:10,188 INFO L125 PetriNetUnfolderBase]: For 921/921 co-relation queries the response was YES. [2024-02-19 14:22:10,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51052 conditions, 10084 events. 7299/10084 cut-off events. For 921/921 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 49140 event pairs, 904 based on Foata normal form. 1/7406 useless extension candidates. Maximal degree in co-relation 13735. Up to 6649 conditions per place. [2024-02-19 14:22:10,304 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 358 selfloop transitions, 10 changer transitions 24/393 dead transitions. [2024-02-19 14:22:10,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 67 places, 393 transitions, 4126 flow [2024-02-19 14:22:10,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:10,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:10,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 155 transitions. [2024-02-19 14:22:10,307 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6150793650793651 [2024-02-19 14:22:10,309 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 28 predicate places. [2024-02-19 14:22:10,309 INFO L507 AbstractCegarLoop]: Abstraction has has 67 places, 393 transitions, 4126 flow [2024-02-19 14:22:10,309 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 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) [2024-02-19 14:22:10,309 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:10,310 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:10,336 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-19 14:22:10,522 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-02-19 14:22:10,522 INFO L432 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)] === [2024-02-19 14:22:10,523 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:10,523 INFO L85 PathProgramCache]: Analyzing trace with hash 1322975610, now seen corresponding path program 1 times [2024-02-19 14:22:10,523 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:10,523 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [146256445] [2024-02-19 14:22:10,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:10,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:10,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:10,800 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:10,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:10,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [146256445] [2024-02-19 14:22:10,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [146256445] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:10,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1095839859] [2024-02-19 14:22:10,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:10,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:10,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:10,802 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) [2024-02-19 14:22:10,828 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-19 14:22:10,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:10,904 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:22:10,906 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:11,060 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:11,060 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:11,374 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:11,375 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1095839859] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:11,375 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:11,375 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7, 8] total 20 [2024-02-19 14:22:11,375 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224409199] [2024-02-19 14:22:11,376 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:11,376 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:11,376 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:11,376 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:11,377 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=315, Unknown=0, NotChecked=0, Total=380 [2024-02-19 14:22:11,377 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:11,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 67 places, 393 transitions, 4126 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:11,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:11,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:11,378 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:13,011 INFO L124 PetriNetUnfolderBase]: 11571/15929 cut-off events. [2024-02-19 14:22:13,012 INFO L125 PetriNetUnfolderBase]: For 1439/1439 co-relation queries the response was YES. [2024-02-19 14:22:13,028 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96546 conditions, 15929 events. 11571/15929 cut-off events. For 1439/1439 co-relation queries the response was YES. Maximal size of possible extension queue 643. Compared 83225 event pairs, 880 based on Foata normal form. 1/11550 useless extension candidates. Maximal degree in co-relation 21230. Up to 12283 conditions per place. [2024-02-19 14:22:13,093 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 532 selfloop transitions, 51 changer transitions 50/634 dead transitions. [2024-02-19 14:22:13,093 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 77 places, 634 transitions, 7946 flow [2024-02-19 14:22:13,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:22:13,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:22:13,094 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 242 transitions. [2024-02-19 14:22:13,094 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-02-19 14:22:13,095 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 38 predicate places. [2024-02-19 14:22:13,095 INFO L507 AbstractCegarLoop]: Abstraction has has 77 places, 634 transitions, 7946 flow [2024-02-19 14:22:13,095 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:13,095 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:13,096 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:13,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-19 14:22:13,307 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:13,308 INFO L432 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)] === [2024-02-19 14:22:13,309 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:13,309 INFO L85 PathProgramCache]: Analyzing trace with hash -408821822, now seen corresponding path program 2 times [2024-02-19 14:22:13,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:13,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232148345] [2024-02-19 14:22:13,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:13,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:13,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:13,577 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:13,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:13,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232148345] [2024-02-19 14:22:13,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1232148345] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:13,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [593207427] [2024-02-19 14:22:13,590 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:22:13,590 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:13,590 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:13,591 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) [2024-02-19 14:22:13,597 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-19 14:22:13,700 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:22:13,700 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:22:13,702 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:22:13,704 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:13,878 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:13,879 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:22:13,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [593207427] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:13,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:22:13,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-02-19 14:22:13,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20243700] [2024-02-19 14:22:13,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:13,880 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:13,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:13,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:13,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:22:13,881 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:13,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 77 places, 634 transitions, 7946 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:13,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:13,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:13,882 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:15,950 INFO L124 PetriNetUnfolderBase]: 14931/20607 cut-off events. [2024-02-19 14:22:15,950 INFO L125 PetriNetUnfolderBase]: For 1840/1840 co-relation queries the response was YES. [2024-02-19 14:22:15,972 INFO L83 FinitePrefix]: Finished finitePrefix Result has 145407 conditions, 20607 events. 14931/20607 cut-off events. For 1840/1840 co-relation queries the response was YES. Maximal size of possible extension queue 867. Compared 112594 event pairs, 990 based on Foata normal form. 1/14884 useless extension candidates. Maximal degree in co-relation 43231. Up to 13788 conditions per place. [2024-02-19 14:22:16,091 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 729 selfloop transitions, 66 changer transitions 55/851 dead transitions. [2024-02-19 14:22:16,091 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 87 places, 851 transitions, 12361 flow [2024-02-19 14:22:16,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:22:16,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:22:16,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 204 transitions. [2024-02-19 14:22:16,093 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.44155844155844154 [2024-02-19 14:22:16,093 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 48 predicate places. [2024-02-19 14:22:16,093 INFO L507 AbstractCegarLoop]: Abstraction has has 87 places, 851 transitions, 12361 flow [2024-02-19 14:22:16,094 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:16,094 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:16,094 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:16,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-19 14:22:16,296 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:16,296 INFO L432 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:16,297 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:16,297 INFO L85 PathProgramCache]: Analyzing trace with hash -1056633790, now seen corresponding path program 3 times [2024-02-19 14:22:16,297 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:16,297 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [901929031] [2024-02-19 14:22:16,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:16,297 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:16,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:16,657 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:16,657 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:16,657 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [901929031] [2024-02-19 14:22:16,658 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [901929031] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:16,658 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [262403258] [2024-02-19 14:22:16,658 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:22:16,658 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:16,658 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:16,659 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:16,692 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-19 14:22:16,761 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:22:16,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:22:16,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 22 conjunts are in the unsatisfiable core [2024-02-19 14:22:16,765 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:16,953 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:16,953 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:22:16,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [262403258] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:16,954 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:22:16,954 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7] total 13 [2024-02-19 14:22:16,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1366023912] [2024-02-19 14:22:16,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:16,954 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:16,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:16,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:16,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:22:16,956 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:16,957 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 851 transitions, 12361 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:16,957 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:16,957 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:16,957 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:19,456 INFO L124 PetriNetUnfolderBase]: 16423/22732 cut-off events. [2024-02-19 14:22:19,456 INFO L125 PetriNetUnfolderBase]: For 2037/2037 co-relation queries the response was YES. [2024-02-19 14:22:19,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 183087 conditions, 22732 events. 16423/22732 cut-off events. For 2037/2037 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 126829 event pairs, 896 based on Foata normal form. 1/16445 useless extension candidates. Maximal degree in co-relation 56208. Up to 15909 conditions per place. [2024-02-19 14:22:19,618 INFO L140 encePairwiseOnDemand]: 28/42 looper letters, 822 selfloop transitions, 69 changer transitions 56/948 dead transitions. [2024-02-19 14:22:19,619 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 948 transitions, 15664 flow [2024-02-19 14:22:19,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:22:19,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:22:19,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 202 transitions. [2024-02-19 14:22:19,620 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43722943722943725 [2024-02-19 14:22:19,620 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 58 predicate places. [2024-02-19 14:22:19,621 INFO L507 AbstractCegarLoop]: Abstraction has has 97 places, 948 transitions, 15664 flow [2024-02-19 14:22:19,621 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:19,621 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:19,621 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:19,636 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-02-19 14:22:19,835 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:19,836 INFO L432 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:19,836 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:19,836 INFO L85 PathProgramCache]: Analyzing trace with hash 1200981362, now seen corresponding path program 4 times [2024-02-19 14:22:19,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:19,836 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2073239132] [2024-02-19 14:22:19,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:19,837 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:19,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:20,071 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:20,071 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2073239132] [2024-02-19 14:22:20,071 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2073239132] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:20,072 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [772774899] [2024-02-19 14:22:20,072 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:22:20,072 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:20,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:20,073 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:20,102 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-19 14:22:20,164 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:22:20,164 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:22:20,165 INFO L262 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2024-02-19 14:22:20,169 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:20,221 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:20,222 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:22:20,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [772774899] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:20,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:22:20,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-02-19 14:22:20,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292541233] [2024-02-19 14:22:20,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:20,223 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:22:20,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:20,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:22:20,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:22:20,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:20,224 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 97 places, 948 transitions, 15664 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:20,224 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:20,224 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:20,224 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:24,560 INFO L124 PetriNetUnfolderBase]: 23597/32659 cut-off events. [2024-02-19 14:22:24,561 INFO L125 PetriNetUnfolderBase]: For 2877/2877 co-relation queries the response was YES. [2024-02-19 14:22:24,603 INFO L83 FinitePrefix]: Finished finitePrefix Result has 295668 conditions, 32659 events. 23597/32659 cut-off events. For 2877/2877 co-relation queries the response was YES. Maximal size of possible extension queue 1414. Compared 192291 event pairs, 1244 based on Foata normal form. 2/23493 useless extension candidates. Maximal degree in co-relation 72195. Up to 23935 conditions per place. [2024-02-19 14:22:24,769 INFO L140 encePairwiseOnDemand]: 34/42 looper letters, 1070 selfloop transitions, 116 changer transitions 116/1303 dead transitions. [2024-02-19 14:22:24,769 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 1303 transitions, 24134 flow [2024-02-19 14:22:24,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:24,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:24,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 138 transitions. [2024-02-19 14:22:24,771 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-02-19 14:22:24,771 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 63 predicate places. [2024-02-19 14:22:24,771 INFO L507 AbstractCegarLoop]: Abstraction has has 102 places, 1303 transitions, 24134 flow [2024-02-19 14:22:24,771 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:24,771 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:24,772 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:24,782 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-02-19 14:22:24,974 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:24,975 INFO L432 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:24,975 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash 774848246, now seen corresponding path program 5 times [2024-02-19 14:22:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:24,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1766372495] [2024-02-19 14:22:24,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:24,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:25,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:25,211 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:25,211 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:25,211 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1766372495] [2024-02-19 14:22:25,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1766372495] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:25,212 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1080422347] [2024-02-19 14:22:25,212 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:22:25,212 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:25,212 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:25,233 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:25,264 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-19 14:22:25,371 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:22:25,372 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:22:25,373 INFO L262 TraceCheckSpWp]: Trace formula consists of 255 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-19 14:22:25,376 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:25,501 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:25,501 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:25,693 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:25,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1080422347] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:25,694 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:25,694 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [7, 7] total 16 [2024-02-19 14:22:25,694 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [956688153] [2024-02-19 14:22:25,695 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:25,695 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:22:25,695 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:25,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:22:25,696 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:22:25,696 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:25,696 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 102 places, 1303 transitions, 24134 flow. Second operand has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:25,696 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:25,696 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:25,696 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:31,248 INFO L124 PetriNetUnfolderBase]: 24271/33694 cut-off events. [2024-02-19 14:22:31,248 INFO L125 PetriNetUnfolderBase]: For 3016/3016 co-relation queries the response was YES. [2024-02-19 14:22:31,289 INFO L83 FinitePrefix]: Finished finitePrefix Result has 338687 conditions, 33694 events. 24271/33694 cut-off events. For 3016/3016 co-relation queries the response was YES. Maximal size of possible extension queue 1463. Compared 200142 event pairs, 1246 based on Foata normal form. 3/24329 useless extension candidates. Maximal degree in co-relation 80178. Up to 24968 conditions per place. [2024-02-19 14:22:31,495 INFO L140 encePairwiseOnDemand]: 30/42 looper letters, 1194 selfloop transitions, 64 changer transitions 119/1378 dead transitions. [2024-02-19 14:22:31,496 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 1378 transitions, 28283 flow [2024-02-19 14:22:31,496 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-02-19 14:22:31,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-02-19 14:22:31,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 231 transitions. [2024-02-19 14:22:31,497 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-02-19 14:22:31,498 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 73 predicate places. [2024-02-19 14:22:31,498 INFO L507 AbstractCegarLoop]: Abstraction has has 112 places, 1378 transitions, 28283 flow [2024-02-19 14:22:31,498 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.25) internal successors, (58), 8 states have internal predecessors, (58), 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) [2024-02-19 14:22:31,498 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:31,498 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:31,510 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-02-19 14:22:31,699 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:31,699 INFO L432 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:31,699 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:31,699 INFO L85 PathProgramCache]: Analyzing trace with hash -1749629454, now seen corresponding path program 1 times [2024-02-19 14:22:31,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:31,700 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [298815416] [2024-02-19 14:22:31,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:31,700 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:31,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:31,794 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:31,795 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:31,795 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [298815416] [2024-02-19 14:22:31,795 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [298815416] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:31,795 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:31,795 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:22:31,795 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [79787953] [2024-02-19 14:22:31,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:31,796 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:22:31,796 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:31,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:22:31,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:22:31,797 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:31,797 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 112 places, 1378 transitions, 28283 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:31,797 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:31,797 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:31,797 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:36,060 INFO L124 PetriNetUnfolderBase]: 17643/24991 cut-off events. [2024-02-19 14:22:36,060 INFO L125 PetriNetUnfolderBase]: For 2350/2350 co-relation queries the response was YES. [2024-02-19 14:22:36,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 276332 conditions, 24991 events. 17643/24991 cut-off events. For 2350/2350 co-relation queries the response was YES. Maximal size of possible extension queue 1128. Compared 149397 event pairs, 978 based on Foata normal form. 0/18934 useless extension candidates. Maximal degree in co-relation 52931. Up to 19715 conditions per place. [2024-02-19 14:22:36,214 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 1006 selfloop transitions, 30 changer transitions 152/1189 dead transitions. [2024-02-19 14:22:36,214 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 116 places, 1189 transitions, 26780 flow [2024-02-19 14:22:36,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:36,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:36,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 116 transitions. [2024-02-19 14:22:36,216 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4603174603174603 [2024-02-19 14:22:36,217 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 77 predicate places. [2024-02-19 14:22:36,217 INFO L507 AbstractCegarLoop]: Abstraction has has 116 places, 1189 transitions, 26780 flow [2024-02-19 14:22:36,217 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:36,217 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:36,217 INFO L234 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, 1, 1, 1, 1] [2024-02-19 14:22:36,218 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-19 14:22:36,218 INFO L432 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:36,218 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:36,219 INFO L85 PathProgramCache]: Analyzing trace with hash 1632007976, now seen corresponding path program 1 times [2024-02-19 14:22:36,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:36,219 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [83512640] [2024-02-19 14:22:36,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:36,219 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:36,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:36,300 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:36,300 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [83512640] [2024-02-19 14:22:36,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [83512640] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:36,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:36,300 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:22:36,300 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626239769] [2024-02-19 14:22:36,300 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:36,301 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:22:36,301 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:36,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:22:36,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:22:36,301 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:36,302 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 116 places, 1189 transitions, 26780 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:36,302 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:36,302 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:36,302 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:39,706 INFO L124 PetriNetUnfolderBase]: 12547/18423 cut-off events. [2024-02-19 14:22:39,706 INFO L125 PetriNetUnfolderBase]: For 1899/1899 co-relation queries the response was YES. [2024-02-19 14:22:39,727 INFO L83 FinitePrefix]: Finished finitePrefix Result has 222366 conditions, 18423 events. 12547/18423 cut-off events. For 1899/1899 co-relation queries the response was YES. Maximal size of possible extension queue 873. Compared 113484 event pairs, 354 based on Foata normal form. 0/14990 useless extension candidates. Maximal degree in co-relation 41122. Up to 15118 conditions per place. [2024-02-19 14:22:39,819 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 641 selfloop transitions, 28 changer transitions 484/1154 dead transitions. [2024-02-19 14:22:39,819 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 1154 transitions, 28346 flow [2024-02-19 14:22:39,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:39,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:39,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-02-19 14:22:39,820 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-19 14:22:39,821 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 81 predicate places. [2024-02-19 14:22:39,821 INFO L507 AbstractCegarLoop]: Abstraction has has 120 places, 1154 transitions, 28346 flow [2024-02-19 14:22:39,821 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 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) [2024-02-19 14:22:39,821 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:39,821 INFO L234 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, 1, 1, 1, 1, 1] [2024-02-19 14:22:39,821 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-19 14:22:39,821 INFO L432 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:39,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:39,822 INFO L85 PathProgramCache]: Analyzing trace with hash 1242329272, now seen corresponding path program 1 times [2024-02-19 14:22:39,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:39,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1634601808] [2024-02-19 14:22:39,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:39,822 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:39,834 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:39,901 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:39,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1634601808] [2024-02-19 14:22:39,901 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1634601808] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:39,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1059292880] [2024-02-19 14:22:39,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:39,902 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:39,902 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:39,917 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:39,917 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-19 14:22:40,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:40,034 INFO L262 TraceCheckSpWp]: Trace formula consists of 264 conjuncts, 10 conjunts are in the unsatisfiable core [2024-02-19 14:22:40,035 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:40,097 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:40,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-19 14:22:40,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1059292880] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:40,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:40,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [5, 6] total 12 [2024-02-19 14:22:40,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [885072186] [2024-02-19 14:22:40,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:40,161 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:22:40,161 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:40,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:22:40,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=115, Unknown=0, NotChecked=0, Total=156 [2024-02-19 14:22:40,161 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:40,162 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 1154 transitions, 28346 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-02-19 14:22:40,162 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:40,162 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:40,162 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:43,877 INFO L124 PetriNetUnfolderBase]: 13528/19838 cut-off events. [2024-02-19 14:22:43,877 INFO L125 PetriNetUnfolderBase]: For 2052/2052 co-relation queries the response was YES. [2024-02-19 14:22:43,900 INFO L83 FinitePrefix]: Finished finitePrefix Result has 259255 conditions, 19838 events. 13528/19838 cut-off events. For 2052/2052 co-relation queries the response was YES. Maximal size of possible extension queue 885. Compared 122145 event pairs, 488 based on Foata normal form. 0/16121 useless extension candidates. Maximal degree in co-relation 61956. Up to 16502 conditions per place. [2024-02-19 14:22:44,156 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 959 selfloop transitions, 75 changer transitions 594/1629 dead transitions. [2024-02-19 14:22:44,156 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 128 places, 1629 transitions, 43125 flow [2024-02-19 14:22:44,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-02-19 14:22:44,156 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-02-19 14:22:44,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 203 transitions. [2024-02-19 14:22:44,157 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5370370370370371 [2024-02-19 14:22:44,158 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 89 predicate places. [2024-02-19 14:22:44,158 INFO L507 AbstractCegarLoop]: Abstraction has has 128 places, 1629 transitions, 43125 flow [2024-02-19 14:22:44,158 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 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) [2024-02-19 14:22:44,158 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:44,158 INFO L234 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, 1, 1, 1, 1, 1] [2024-02-19 14:22:44,171 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-02-19 14:22:44,359 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2024-02-19 14:22:44,360 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:44,360 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:44,360 INFO L85 PathProgramCache]: Analyzing trace with hash -1981452814, now seen corresponding path program 1 times [2024-02-19 14:22:44,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:44,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [489311292] [2024-02-19 14:22:44,361 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:44,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:44,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:44,434 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:44,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:44,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [489311292] [2024-02-19 14:22:44,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [489311292] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:44,435 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:44,435 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-02-19 14:22:44,435 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894678779] [2024-02-19 14:22:44,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:44,435 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:22:44,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:44,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:22:44,436 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:22:44,437 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:44,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 1629 transitions, 43125 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:22:44,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:44,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:44,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:47,654 INFO L124 PetriNetUnfolderBase]: 9896/14792 cut-off events. [2024-02-19 14:22:47,654 INFO L125 PetriNetUnfolderBase]: For 1576/1576 co-relation queries the response was YES. [2024-02-19 14:22:47,667 INFO L83 FinitePrefix]: Finished finitePrefix Result has 208176 conditions, 14792 events. 9896/14792 cut-off events. For 1576/1576 co-relation queries the response was YES. Maximal size of possible extension queue 671. Compared 90543 event pairs, 488 based on Foata normal form. 0/12495 useless extension candidates. Maximal degree in co-relation 66702. Up to 12749 conditions per place. [2024-02-19 14:22:47,750 INFO L140 encePairwiseOnDemand]: 35/42 looper letters, 379 selfloop transitions, 4 changer transitions 665/1049 dead transitions. [2024-02-19 14:22:47,750 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 1049 transitions, 29919 flow [2024-02-19 14:22:47,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:47,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:47,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-02-19 14:22:47,751 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4166666666666667 [2024-02-19 14:22:47,752 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 93 predicate places. [2024-02-19 14:22:47,752 INFO L507 AbstractCegarLoop]: Abstraction has has 132 places, 1049 transitions, 29919 flow [2024-02-19 14:22:47,752 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:22:47,752 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:47,752 INFO L234 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, 1, 1, 1, 1, 1] [2024-02-19 14:22:47,752 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-19 14:22:47,752 INFO L432 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:47,753 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:47,753 INFO L85 PathProgramCache]: Analyzing trace with hash -907659536, now seen corresponding path program 1 times [2024-02-19 14:22:47,753 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:47,753 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [650148565] [2024-02-19 14:22:47,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:47,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:47,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:47,808 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:47,808 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:47,808 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [650148565] [2024-02-19 14:22:47,808 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [650148565] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:47,808 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:47,808 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:22:47,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [319283369] [2024-02-19 14:22:47,809 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:47,809 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-02-19 14:22:47,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:47,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-02-19 14:22:47,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-02-19 14:22:47,810 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:47,810 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 1049 transitions, 29919 flow. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:22:47,810 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:47,810 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:47,810 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:50,467 INFO L124 PetriNetUnfolderBase]: 9155/13788 cut-off events. [2024-02-19 14:22:50,468 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-02-19 14:22:50,480 INFO L83 FinitePrefix]: Finished finitePrefix Result has 207855 conditions, 13788 events. 9155/13788 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 625. Compared 84572 event pairs, 416 based on Foata normal form. 0/11803 useless extension candidates. Maximal degree in co-relation 71448. Up to 11787 conditions per place. [2024-02-19 14:22:50,708 INFO L140 encePairwiseOnDemand]: 33/42 looper letters, 203 selfloop transitions, 2 changer transitions 746/952 dead transitions. [2024-02-19 14:22:50,708 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 952 transitions, 29069 flow [2024-02-19 14:22:50,709 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:22:50,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:22:50,709 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-02-19 14:22:50,709 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43253968253968256 [2024-02-19 14:22:50,710 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 97 predicate places. [2024-02-19 14:22:50,710 INFO L507 AbstractCegarLoop]: Abstraction has has 136 places, 952 transitions, 29069 flow [2024-02-19 14:22:50,710 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 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) [2024-02-19 14:22:50,710 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:50,710 INFO L234 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, 1, 1, 1, 1, 1, 1] [2024-02-19 14:22:50,711 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-02-19 14:22:50,711 INFO L432 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:50,711 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:50,711 INFO L85 PathProgramCache]: Analyzing trace with hash 357030262, now seen corresponding path program 1 times [2024-02-19 14:22:50,711 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:50,711 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742163225] [2024-02-19 14:22:50,712 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:50,712 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:50,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:50,785 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:22:50,786 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:50,786 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742163225] [2024-02-19 14:22:50,786 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742163225] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:22:50,786 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:22:50,786 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-02-19 14:22:50,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [739403598] [2024-02-19 14:22:50,786 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:50,787 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-02-19 14:22:50,787 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:50,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-02-19 14:22:50,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-02-19 14:22:50,787 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:50,788 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 136 places, 952 transitions, 29069 flow. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-02-19 14:22:50,788 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:50,788 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:50,788 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:53,387 INFO L124 PetriNetUnfolderBase]: 9155/13784 cut-off events. [2024-02-19 14:22:53,387 INFO L125 PetriNetUnfolderBase]: For 1486/1486 co-relation queries the response was YES. [2024-02-19 14:22:53,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 221605 conditions, 13784 events. 9155/13784 cut-off events. For 1486/1486 co-relation queries the response was YES. Maximal size of possible extension queue 626. Compared 84533 event pairs, 416 based on Foata normal form. 2/11801 useless extension candidates. Maximal degree in co-relation 76194. Up to 12039 conditions per place. [2024-02-19 14:22:53,487 INFO L140 encePairwiseOnDemand]: 38/42 looper letters, 225 selfloop transitions, 15 changer transitions 798/1039 dead transitions. [2024-02-19 14:22:53,487 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 139 places, 1039 transitions, 33782 flow [2024-02-19 14:22:53,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-02-19 14:22:53,488 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-02-19 14:22:53,488 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 94 transitions. [2024-02-19 14:22:53,488 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5595238095238095 [2024-02-19 14:22:53,489 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 100 predicate places. [2024-02-19 14:22:53,489 INFO L507 AbstractCegarLoop]: Abstraction has has 139 places, 1039 transitions, 33782 flow [2024-02-19 14:22:53,489 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 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) [2024-02-19 14:22:53,489 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:53,489 INFO L234 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, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:22:53,490 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-19 14:22:53,490 INFO L432 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:53,490 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:53,490 INFO L85 PathProgramCache]: Analyzing trace with hash -37571594, now seen corresponding path program 1 times [2024-02-19 14:22:53,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:53,491 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [381180424] [2024-02-19 14:22:53,491 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:53,491 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:53,696 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:22:53,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [381180424] [2024-02-19 14:22:53,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [381180424] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:53,697 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1584612289] [2024-02-19 14:22:53,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:53,697 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:53,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:53,698 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:53,699 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-19 14:22:53,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:53,808 INFO L262 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 17 conjunts are in the unsatisfiable core [2024-02-19 14:22:53,810 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:22:54,037 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:22:54,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:22:54,320 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:22:54,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1584612289] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:54,321 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:22:54,321 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [8, 10] total 24 [2024-02-19 14:22:54,321 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1709666108] [2024-02-19 14:22:54,321 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:22:54,321 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-02-19 14:22:54,322 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:22:54,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-02-19 14:22:54,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=466, Unknown=0, NotChecked=0, Total=552 [2024-02-19 14:22:54,322 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:22:54,323 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 1039 transitions, 33782 flow. Second operand has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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) [2024-02-19 14:22:54,323 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:22:54,323 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:22:54,323 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:22:59,045 INFO L124 PetriNetUnfolderBase]: 14489/21302 cut-off events. [2024-02-19 14:22:59,045 INFO L125 PetriNetUnfolderBase]: For 2178/2178 co-relation queries the response was YES. [2024-02-19 14:22:59,070 INFO L83 FinitePrefix]: Finished finitePrefix Result has 363618 conditions, 21302 events. 14489/21302 cut-off events. For 2178/2178 co-relation queries the response was YES. Maximal size of possible extension queue 901. Compared 132986 event pairs, 622 based on Foata normal form. 1/17521 useless extension candidates. Maximal degree in co-relation 94284. Up to 19164 conditions per place. [2024-02-19 14:22:59,222 INFO L140 encePairwiseOnDemand]: 29/42 looper letters, 508 selfloop transitions, 32 changer transitions 970/1511 dead transitions. [2024-02-19 14:22:59,222 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 1511 transitions, 52113 flow [2024-02-19 14:22:59,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:22:59,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:22:59,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 238 transitions. [2024-02-19 14:22:59,223 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4722222222222222 [2024-02-19 14:22:59,224 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 111 predicate places. [2024-02-19 14:22:59,224 INFO L507 AbstractCegarLoop]: Abstraction has has 150 places, 1511 transitions, 52113 flow [2024-02-19 14:22:59,224 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 7.222222222222222) internal successors, (65), 9 states have internal predecessors, (65), 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) [2024-02-19 14:22:59,224 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:22:59,224 INFO L234 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, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:22:59,242 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-19 14:22:59,435 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-02-19 14:22:59,436 INFO L432 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:22:59,436 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:22:59,437 INFO L85 PathProgramCache]: Analyzing trace with hash -142040894, now seen corresponding path program 2 times [2024-02-19 14:22:59,437 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:22:59,437 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [906121695] [2024-02-19 14:22:59,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:22:59,437 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:22:59,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:22:59,662 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-02-19 14:22:59,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:22:59,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [906121695] [2024-02-19 14:22:59,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [906121695] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:22:59,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1661489369] [2024-02-19 14:22:59,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:22:59,663 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:22:59,663 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:22:59,664 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:22:59,714 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-19 14:22:59,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-02-19 14:22:59,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:22:59,794 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-19 14:22:59,799 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:23:00,090 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:23:00,091 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:23:00,091 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1661489369] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:23:00,091 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:23:00,091 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-02-19 14:23:00,091 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225757784] [2024-02-19 14:23:00,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:23:00,092 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:23:00,092 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:23:00,093 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:23:00,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=201, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:23:00,093 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:23:00,093 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 150 places, 1511 transitions, 52113 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-02-19 14:23:00,093 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:23:00,093 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:23:00,093 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:23:06,646 INFO L124 PetriNetUnfolderBase]: 16252/23843 cut-off events. [2024-02-19 14:23:06,647 INFO L125 PetriNetUnfolderBase]: For 2354/2354 co-relation queries the response was YES. [2024-02-19 14:23:06,673 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430740 conditions, 23843 events. 16252/23843 cut-off events. For 2354/2354 co-relation queries the response was YES. Maximal size of possible extension queue 1016. Compared 150751 event pairs, 614 based on Foata normal form. 1/19514 useless extension candidates. Maximal degree in co-relation 123026. Up to 21704 conditions per place. [2024-02-19 14:23:06,847 INFO L140 encePairwiseOnDemand]: 31/42 looper letters, 575 selfloop transitions, 42 changer transitions 1041/1659 dead transitions. [2024-02-19 14:23:06,848 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 159 places, 1659 transitions, 60518 flow [2024-02-19 14:23:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-19 14:23:06,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-19 14:23:06,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 193 transitions. [2024-02-19 14:23:06,849 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4595238095238095 [2024-02-19 14:23:06,850 INFO L308 CegarLoopForPetriNet]: 39 programPoint places, 120 predicate places. [2024-02-19 14:23:06,850 INFO L507 AbstractCegarLoop]: Abstraction has has 159 places, 1659 transitions, 60518 flow [2024-02-19 14:23:06,850 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-02-19 14:23:06,850 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:23:06,850 INFO L234 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, 1, 1, 1, 1, 1, 1, 1] [2024-02-19 14:23:06,862 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-19 14:23:07,059 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 14:23:07,060 INFO L432 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-19 14:23:07,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:23:07,060 INFO L85 PathProgramCache]: Analyzing trace with hash 1016080962, now seen corresponding path program 3 times [2024-02-19 14:23:07,061 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:23:07,061 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89409884] [2024-02-19 14:23:07,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:23:07,061 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:23:07,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:23:07,386 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-02-19 14:23:07,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:23:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89409884] [2024-02-19 14:23:07,387 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89409884] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:23:07,387 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1096307557] [2024-02-19 14:23:07,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:23:07,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:23:07,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:23:07,405 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:23:07,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-19 14:23:07,528 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-02-19 14:23:07,529 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:23:07,530 INFO L262 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 15 conjunts are in the unsatisfiable core [2024-02-19 14:23:07,531 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:23:07,672 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-02-19 14:23:07,672 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-02-19 14:23:07,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1096307557] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:23:07,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-02-19 14:23:07,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9] total 15 [2024-02-19 14:23:07,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [743817511] [2024-02-19 14:23:07,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:23:07,673 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-02-19 14:23:07,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:23:07,674 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-02-19 14:23:07,674 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:23:07,674 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 42 [2024-02-19 14:23:07,675 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 159 places, 1659 transitions, 60518 flow. Second operand has 8 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 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) [2024-02-19 14:23:07,675 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:23:07,675 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 42 [2024-02-19 14:23:07,675 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand