./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/mult-dist.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/mult-dist.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 c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 --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 14:36:52,279 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-19 14:36:52,345 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-19 14:36:52,350 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-19 14:36:52,350 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-19 14:36:52,374 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-19 14:36:52,375 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-19 14:36:52,375 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-19 14:36:52,375 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-19 14:36:52,378 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-19 14:36:52,379 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-19 14:36:52,379 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-19 14:36:52,379 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-19 14:36:52,380 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-19 14:36:52,380 INFO L153 SettingsManager]: * Use SBE=true [2024-02-19 14:36:52,381 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-19 14:36:52,381 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-19 14:36:52,381 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-19 14:36:52,381 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-19 14:36:52,381 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-19 14:36:52,382 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-19 14:36:52,382 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-19 14:36:52,383 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-19 14:36:52,383 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-19 14:36:52,383 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-19 14:36:52,383 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-19 14:36:52,383 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-19 14:36:52,384 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-19 14:36:52,384 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-19 14:36:52,384 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-19 14:36:52,385 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-19 14:36:52,385 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-19 14:36:52,385 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:36:52,386 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-19 14:36:52,396 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-19 14:36:52,396 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-19 14:36:52,397 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-19 14:36:52,397 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-19 14:36:52,397 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-19 14:36:52,397 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-19 14:36:52,397 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-19 14:36:52,398 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-19 14:36:52,398 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-19 14:36:52,398 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-19 14:36:52,652 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-19 14:36:52,670 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-19 14:36:52,672 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-19 14:36:52,673 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-19 14:36:52,673 INFO L274 PluginConnector]: CDTParser initialized [2024-02-19 14:36:52,674 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-02-19 14:36:53,728 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-19 14:36:53,890 INFO L384 CDTParser]: Found 1 translation units. [2024-02-19 14:36:53,891 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-02-19 14:36:53,900 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/596bde4d0/9c084b4bcca341e68e9d8b8a0b84caf0/FLAGe5b557a40 [2024-02-19 14:36:53,914 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/596bde4d0/9c084b4bcca341e68e9d8b8a0b84caf0 [2024-02-19 14:36:53,916 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-19 14:36:53,917 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-19 14:36:53,919 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-19 14:36:53,920 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-19 14:36:53,923 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-19 14:36:53,924 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:36:53" (1/1) ... [2024-02-19 14:36:53,925 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ef2df39 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:53, skipping insertion in model container [2024-02-19 14:36:53,925 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.02 02:36:53" (1/1) ... [2024-02-19 14:36:53,943 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-19 14:36:54,109 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/mult-dist.wvr.c[2116,2129] [2024-02-19 14:36:54,117 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:36:54,126 INFO L202 MainTranslator]: Completed pre-run [2024-02-19 14:36:54,152 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/mult-dist.wvr.c[2116,2129] [2024-02-19 14:36:54,158 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-19 14:36:54,172 INFO L206 MainTranslator]: Completed translation [2024-02-19 14:36:54,173 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54 WrapperNode [2024-02-19 14:36:54,173 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-19 14:36:54,174 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-19 14:36:54,174 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-19 14:36:54,175 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-19 14:36:54,180 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,192 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,213 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-02-19 14:36:54,213 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-19 14:36:54,214 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-19 14:36:54,214 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-19 14:36:54,214 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-19 14:36:54,221 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,222 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,226 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,246 INFO L175 MemorySlicer]: Split 8 memory accesses to 4 slices as follows [2, 2, 2, 2]. 25 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 3 writes are split as follows [0, 1, 1, 1]. [2024-02-19 14:36:54,247 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,247 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,250 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,255 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,259 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,260 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,265 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-19 14:36:54,266 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-19 14:36:54,267 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-19 14:36:54,267 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-19 14:36:54,268 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (1/1) ... [2024-02-19 14:36:54,272 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-19 14:36:54,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:36:54,291 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 14:36:54,308 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 14:36:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-19 14:36:54,333 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-19 14:36:54,333 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-19 14:36:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-19 14:36:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-19 14:36:54,334 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-19 14:36:54,334 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-19 14:36:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-19 14:36:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-19 14:36:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-19 14:36:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-19 14:36:54,335 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-19 14:36:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-19 14:36:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-19 14:36:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-19 14:36:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-19 14:36:54,336 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-19 14:36:54,336 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-19 14:36:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-19 14:36:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-19 14:36:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-19 14:36:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-19 14:36:54,337 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-19 14:36:54,339 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 14:36:54,448 INFO L244 CfgBuilder]: Building ICFG [2024-02-19 14:36:54,449 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-19 14:36:54,654 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-19 14:36:54,655 INFO L293 CfgBuilder]: Performing block encoding [2024-02-19 14:36:54,798 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-19 14:36:54,798 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-19 14:36:54,799 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:36:54 BoogieIcfgContainer [2024-02-19 14:36:54,799 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-19 14:36:54,808 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-19 14:36:54,809 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-19 14:36:54,811 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-19 14:36:54,811 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.02 02:36:53" (1/3) ... [2024-02-19 14:36:54,812 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1c4dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:36:54, skipping insertion in model container [2024-02-19 14:36:54,812 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.02 02:36:54" (2/3) ... [2024-02-19 14:36:54,813 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6d1c4dd3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.02 02:36:54, skipping insertion in model container [2024-02-19 14:36:54,813 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.02 02:36:54" (3/3) ... [2024-02-19 14:36:54,814 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-02-19 14:36:54,829 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-19 14:36:54,829 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-19 14:36:54,829 INFO L631 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-19 14:36:54,864 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-19 14:36:54,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-02-19 14:36:54,925 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-02-19 14:36:54,925 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:36:54,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 37 conditions, 24 events. 3/24 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 2. Compared 13 event pairs, 0 based on Foata normal form. 0/20 useless extension candidates. Maximal degree in co-relation 18. Up to 2 conditions per place. [2024-02-19 14:36:54,929 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-02-19 14:36:54,932 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-02-19 14:36:54,943 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-19 14:36:54,950 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;@17a706e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-19 14:36:54,950 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-19 14:36:54,963 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-19 14:36:54,964 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-02-19 14:36:54,964 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-19 14:36:54,964 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:54,964 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] [2024-02-19 14:36:54,965 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 14:36:54,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:54,969 INFO L85 PathProgramCache]: Analyzing trace with hash -1760804781, now seen corresponding path program 1 times [2024-02-19 14:36:54,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:54,978 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1922280570] [2024-02-19 14:36:54,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:54,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:55,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:55,515 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 14:36:55,515 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:55,516 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1922280570] [2024-02-19 14:36:55,516 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1922280570] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:36:55,517 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:36:55,517 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-19 14:36:55,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [604002793] [2024-02-19 14:36:55,519 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:36:55,525 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-19 14:36:55,529 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:55,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-19 14:36:55,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-19 14:36:55,607 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-02-19 14:36:55,609 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 23 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 14:36:55,609 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:55,609 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-02-19 14:36:55,610 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:55,740 INFO L124 PetriNetUnfolderBase]: 359/507 cut-off events. [2024-02-19 14:36:55,741 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-19 14:36:55,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1065 conditions, 507 events. 359/507 cut-off events. For 42/42 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 1605 event pairs, 39 based on Foata normal form. 1/310 useless extension candidates. Maximal degree in co-relation 803. Up to 421 conditions per place. [2024-02-19 14:36:55,748 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2024-02-19 14:36:55,748 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2024-02-19 14:36:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-19 14:36:55,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-19 14:36:55,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-02-19 14:36:55,758 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-02-19 14:36:55,761 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2024-02-19 14:36:55,761 INFO L507 AbstractCegarLoop]: Abstraction has has 32 places, 39 transitions, 181 flow [2024-02-19 14:36:55,761 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.333333333333334) internal successors, (37), 3 states have internal predecessors, (37), 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 14:36:55,761 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:55,762 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] [2024-02-19 14:36:55,762 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-19 14:36:55,762 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 14:36:55,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:55,763 INFO L85 PathProgramCache]: Analyzing trace with hash 200582291, now seen corresponding path program 1 times [2024-02-19 14:36:55,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:55,764 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997137404] [2024-02-19 14:36:55,764 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:55,764 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:55,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:56,005 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 14:36:56,006 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:56,006 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997137404] [2024-02-19 14:36:56,006 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997137404] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:36:56,006 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:36:56,006 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:36:56,007 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330508472] [2024-02-19 14:36:56,007 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:36:56,008 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:36:56,008 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:56,009 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:36:56,010 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:36:56,018 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:36:56,019 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 39 transitions, 181 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:36:56,019 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:56,019 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:36:56,019 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:56,273 INFO L124 PetriNetUnfolderBase]: 597/903 cut-off events. [2024-02-19 14:36:56,273 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2024-02-19 14:36:56,276 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2631 conditions, 903 events. 597/903 cut-off events. For 254/254 co-relation queries the response was YES. Maximal size of possible extension queue 49. Compared 3400 event pairs, 68 based on Foata normal form. 0/657 useless extension candidates. Maximal degree in co-relation 1942. Up to 531 conditions per place. [2024-02-19 14:36:56,281 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 100 selfloop transitions, 9 changer transitions 12/122 dead transitions. [2024-02-19 14:36:56,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 122 transitions, 803 flow [2024-02-19 14:36:56,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:36:56,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:36:56,283 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-02-19 14:36:56,283 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2024-02-19 14:36:56,284 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2024-02-19 14:36:56,284 INFO L507 AbstractCegarLoop]: Abstraction has has 38 places, 122 transitions, 803 flow [2024-02-19 14:36:56,284 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:36:56,284 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:56,284 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] [2024-02-19 14:36:56,285 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-19 14:36:56,285 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 14:36:56,285 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:56,285 INFO L85 PathProgramCache]: Analyzing trace with hash -692614235, now seen corresponding path program 2 times [2024-02-19 14:36:56,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:56,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [235171267] [2024-02-19 14:36:56,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:56,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:56,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:56,431 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 14:36:56,431 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:56,431 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [235171267] [2024-02-19 14:36:56,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [235171267] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:56,432 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [800639290] [2024-02-19 14:36:56,432 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:36:56,432 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:36:56,432 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:36:56,433 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 14:36:56,437 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 14:36:56,516 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:36:56,516 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:36:56,518 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:36:56,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:36:56,644 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 14:36:56,644 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:36:56,889 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 14:36:56,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [800639290] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:36:56,890 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:36:56,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-02-19 14:36:56,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [817797078] [2024-02-19 14:36:56,890 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:36:56,890 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:36:56,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:56,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:36:56,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:36:56,893 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:36:56,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 122 transitions, 803 flow. Second operand has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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 14:36:56,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:56,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:36:56,894 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:57,655 INFO L124 PetriNetUnfolderBase]: 1204/1791 cut-off events. [2024-02-19 14:36:57,656 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-02-19 14:36:57,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7064 conditions, 1791 events. 1204/1791 cut-off events. For 477/477 co-relation queries the response was YES. Maximal size of possible extension queue 105. Compared 7529 event pairs, 10 based on Foata normal form. 0/1241 useless extension candidates. Maximal degree in co-relation 6434. Up to 1280 conditions per place. [2024-02-19 14:36:57,665 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 319 selfloop transitions, 146 changer transitions 22/488 dead transitions. [2024-02-19 14:36:57,665 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 488 transitions, 4060 flow [2024-02-19 14:36:57,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:36:57,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:36:57,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 282 transitions. [2024-02-19 14:36:57,668 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-02-19 14:36:57,668 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-02-19 14:36:57,668 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 488 transitions, 4060 flow [2024-02-19 14:36:57,669 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.6) internal successors, (99), 15 states have internal predecessors, (99), 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 14:36:57,669 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:57,669 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] [2024-02-19 14:36:57,682 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 14:36:57,880 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 14:36:57,880 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 14:36:57,880 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:57,881 INFO L85 PathProgramCache]: Analyzing trace with hash -1895815853, now seen corresponding path program 3 times [2024-02-19 14:36:57,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:57,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545359072] [2024-02-19 14:36:57,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:57,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:57,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:58,027 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 14:36:58,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545359072] [2024-02-19 14:36:58,028 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [545359072] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:58,028 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1130011549] [2024-02-19 14:36:58,028 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:36:58,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:36:58,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:36:58,029 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 14:36:58,033 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 14:36:58,098 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:36:58,098 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:36:58,099 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:36:58,100 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:36:58,185 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 14:36:58,186 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:36:58,425 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 14:36:58,426 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1130011549] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:58,426 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:36:58,426 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-02-19 14:36:58,426 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98005112] [2024-02-19 14:36:58,426 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:36:58,426 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:36:58,427 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:58,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:36:58,427 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:36:58,427 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:36:58,427 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 58 places, 488 transitions, 4060 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:36:58,427 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:58,427 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:36:58,428 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:58,822 INFO L124 PetriNetUnfolderBase]: 1734/2623 cut-off events. [2024-02-19 14:36:58,822 INFO L125 PetriNetUnfolderBase]: For 789/789 co-relation queries the response was YES. [2024-02-19 14:36:58,824 INFO L83 FinitePrefix]: Finished finitePrefix Result has 12943 conditions, 2623 events. 1734/2623 cut-off events. For 789/789 co-relation queries the response was YES. Maximal size of possible extension queue 148. Compared 12169 event pairs, 14 based on Foata normal form. 0/1805 useless extension candidates. Maximal degree in co-relation 11720. Up to 2056 conditions per place. [2024-02-19 14:36:58,838 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 596 selfloop transitions, 83 changer transitions 22/714 dead transitions. [2024-02-19 14:36:58,838 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 714 transitions, 7378 flow [2024-02-19 14:36:58,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:36:58,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:36:58,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-02-19 14:36:58,839 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-02-19 14:36:58,840 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-02-19 14:36:58,840 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 714 transitions, 7378 flow [2024-02-19 14:36:58,840 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:36:58,840 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:58,840 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] [2024-02-19 14:36:58,855 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 14:36:59,051 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 14:36:59,052 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 14:36:59,052 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:36:59,052 INFO L85 PathProgramCache]: Analyzing trace with hash -512912937, now seen corresponding path program 4 times [2024-02-19 14:36:59,052 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:36:59,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1011944013] [2024-02-19 14:36:59,053 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:36:59,053 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:36:59,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:36:59,177 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 14:36:59,177 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:36:59,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1011944013] [2024-02-19 14:36:59,177 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1011944013] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:59,177 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [315209425] [2024-02-19 14:36:59,178 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:36:59,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:36:59,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:36:59,179 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 14:36:59,180 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 14:36:59,244 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:36:59,244 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:36:59,245 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:36:59,246 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:36:59,337 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 14:36:59,338 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:36:59,431 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 14:36:59,432 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [315209425] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:36:59,432 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:36:59,432 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-19 14:36:59,432 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005740300] [2024-02-19 14:36:59,432 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:36:59,432 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:36:59,433 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:36:59,433 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:36:59,433 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:36:59,437 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:36:59,437 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 714 transitions, 7378 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:36:59,437 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:36:59,437 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:36:59,437 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:36:59,827 INFO L124 PetriNetUnfolderBase]: 1790/2703 cut-off events. [2024-02-19 14:36:59,828 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2024-02-19 14:36:59,830 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15971 conditions, 2703 events. 1790/2703 cut-off events. For 1003/1003 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 12578 event pairs, 14 based on Foata normal form. 0/1861 useless extension candidates. Maximal degree in co-relation 14524. Up to 2136 conditions per place. [2024-02-19 14:36:59,845 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 654 selfloop transitions, 55 changer transitions 22/744 dead transitions. [2024-02-19 14:36:59,845 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 744 transitions, 9156 flow [2024-02-19 14:36:59,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:36:59,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:36:59,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-02-19 14:36:59,846 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-02-19 14:36:59,846 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-02-19 14:36:59,846 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 744 transitions, 9156 flow [2024-02-19 14:36:59,847 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:36:59,847 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:36:59,847 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] [2024-02-19 14:36:59,860 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 14:37:00,058 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 14:37:00,058 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 14:37:00,059 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:00,059 INFO L85 PathProgramCache]: Analyzing trace with hash 1860833943, now seen corresponding path program 5 times [2024-02-19 14:37:00,059 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:00,059 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441670976] [2024-02-19 14:37:00,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:00,059 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:00,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:00,213 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 14:37:00,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441670976] [2024-02-19 14:37:00,214 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441670976] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:00,214 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1000741098] [2024-02-19 14:37:00,214 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:37:00,215 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:00,215 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:00,216 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 14:37:00,239 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 14:37:00,288 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:37:00,288 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:00,289 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:00,290 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:00,360 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 14:37:00,360 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:00,488 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 14:37:00,488 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1000741098] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:00,488 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:37:00,488 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-19 14:37:00,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1994892030] [2024-02-19 14:37:00,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:00,489 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:37:00,489 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:00,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:37:00,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:00,491 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:37:00,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 70 places, 744 transitions, 9156 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:00,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:00,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:37:00,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:00,866 INFO L124 PetriNetUnfolderBase]: 1814/2745 cut-off events. [2024-02-19 14:37:00,866 INFO L125 PetriNetUnfolderBase]: For 1278/1278 co-relation queries the response was YES. [2024-02-19 14:37:00,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18890 conditions, 2745 events. 1814/2745 cut-off events. For 1278/1278 co-relation queries the response was YES. Maximal size of possible extension queue 157. Compared 12912 event pairs, 14 based on Foata normal form. 0/1897 useless extension candidates. Maximal degree in co-relation 17224. Up to 2178 conditions per place. [2024-02-19 14:37:00,886 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 672 selfloop transitions, 57 changer transitions 22/764 dead transitions. [2024-02-19 14:37:00,886 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 764 transitions, 10905 flow [2024-02-19 14:37:00,886 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:37:00,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:37:00,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-02-19 14:37:00,887 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-02-19 14:37:00,888 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-02-19 14:37:00,888 INFO L507 AbstractCegarLoop]: Abstraction has has 75 places, 764 transitions, 10905 flow [2024-02-19 14:37:00,888 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:00,888 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:00,888 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] [2024-02-19 14:37:00,903 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 14:37:01,095 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 14:37:01,095 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 14:37:01,096 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:01,096 INFO L85 PathProgramCache]: Analyzing trace with hash -200025859, now seen corresponding path program 6 times [2024-02-19 14:37:01,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:01,096 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [14147814] [2024-02-19 14:37:01,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:01,097 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:01,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:01,233 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 14:37:01,234 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [14147814] [2024-02-19 14:37:01,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [14147814] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:01,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1540440714] [2024-02-19 14:37:01,234 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:37:01,234 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:01,234 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:01,235 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 14:37:01,256 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 14:37:01,303 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:37:01,304 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:01,305 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 14:37:01,306 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:01,376 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 14:37:01,376 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:01,449 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 14:37:01,449 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1540440714] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:01,449 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:37:01,449 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 10 [2024-02-19 14:37:01,449 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [322335077] [2024-02-19 14:37:01,449 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:01,450 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:37:01,450 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:01,450 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:37:01,450 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-02-19 14:37:01,452 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:37:01,452 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 75 places, 764 transitions, 10905 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:01,452 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:01,452 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:37:01,452 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:01,852 INFO L124 PetriNetUnfolderBase]: 2008/3013 cut-off events. [2024-02-19 14:37:01,853 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2024-02-19 14:37:01,856 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23707 conditions, 3013 events. 2008/3013 cut-off events. For 1718/1718 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 14220 event pairs, 12 based on Foata normal form. 0/2069 useless extension candidates. Maximal degree in co-relation 21822. Up to 2440 conditions per place. [2024-02-19 14:37:01,874 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 768 selfloop transitions, 73 changer transitions 22/876 dead transitions. [2024-02-19 14:37:01,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 876 transitions, 14235 flow [2024-02-19 14:37:01,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:37:01,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:37:01,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-02-19 14:37:01,876 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-02-19 14:37:01,876 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-02-19 14:37:01,877 INFO L507 AbstractCegarLoop]: Abstraction has has 80 places, 876 transitions, 14235 flow [2024-02-19 14:37:01,877 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:01,877 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:01,877 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] [2024-02-19 14:37:01,890 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 14:37:02,088 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 14:37:02,088 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 14:37:02,089 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:02,089 INFO L85 PathProgramCache]: Analyzing trace with hash 1721194557, now seen corresponding path program 7 times [2024-02-19 14:37:02,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:02,089 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365196577] [2024-02-19 14:37:02,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:02,090 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:02,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:02,191 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 14:37:02,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:02,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365196577] [2024-02-19 14:37:02,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365196577] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:02,192 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [78062901] [2024-02-19 14:37:02,192 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:37:02,192 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:02,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:02,193 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 14:37:02,208 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 14:37:02,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:02,254 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:02,255 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:02,361 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 14:37:02,361 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:02,440 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 14:37:02,441 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [78062901] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:02,441 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:37:02,441 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-19 14:37:02,441 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1425197425] [2024-02-19 14:37:02,441 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:02,442 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:37:02,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:02,442 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:37:02,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:02,444 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:37:02,444 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 876 transitions, 14235 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:02,444 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:02,444 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:37:02,444 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:02,906 INFO L124 PetriNetUnfolderBase]: 1994/2999 cut-off events. [2024-02-19 14:37:02,906 INFO L125 PetriNetUnfolderBase]: For 2058/2058 co-relation queries the response was YES. [2024-02-19 14:37:02,909 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26513 conditions, 2999 events. 1994/2999 cut-off events. For 2058/2058 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 14204 event pairs, 12 based on Foata normal form. 0/2069 useless extension candidates. Maximal degree in co-relation 24409. Up to 2426 conditions per place. [2024-02-19 14:37:02,930 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 772 selfloop transitions, 67 changer transitions 22/874 dead transitions. [2024-02-19 14:37:02,930 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 874 transitions, 15923 flow [2024-02-19 14:37:02,931 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-19 14:37:02,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-19 14:37:02,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-02-19 14:37:02,931 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-02-19 14:37:02,932 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-02-19 14:37:02,932 INFO L507 AbstractCegarLoop]: Abstraction has has 85 places, 874 transitions, 15923 flow [2024-02-19 14:37:02,932 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:02,932 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:02,932 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] [2024-02-19 14:37:02,943 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 14:37:03,143 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 14:37:03,143 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 14:37:03,143 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:03,143 INFO L85 PathProgramCache]: Analyzing trace with hash -218459885, now seen corresponding path program 8 times [2024-02-19 14:37:03,143 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:03,144 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [775407346] [2024-02-19 14:37:03,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:03,144 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:03,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:03,231 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 14:37:03,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [775407346] [2024-02-19 14:37:03,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [775407346] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:03,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [506475449] [2024-02-19 14:37:03,232 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:37:03,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:03,232 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:03,233 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 14:37:03,264 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 14:37:03,332 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:37:03,332 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:03,334 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:03,335 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:03,398 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 14:37:03,399 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:03,466 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 14:37:03,467 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [506475449] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:03,467 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:37:03,468 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-02-19 14:37:03,469 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340182004] [2024-02-19 14:37:03,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:03,470 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:37:03,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:03,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:37:03,470 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:37:03,470 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-19 14:37:03,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 874 transitions, 15923 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:03,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:03,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-19 14:37:03,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:04,062 INFO L124 PetriNetUnfolderBase]: 2078/3155 cut-off events. [2024-02-19 14:37:04,063 INFO L125 PetriNetUnfolderBase]: For 2604/2604 co-relation queries the response was YES. [2024-02-19 14:37:04,066 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30972 conditions, 3155 events. 2078/3155 cut-off events. For 2604/2604 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15385 event pairs, 16 based on Foata normal form. 0/2191 useless extension candidates. Maximal degree in co-relation 28605. Up to 2566 conditions per place. [2024-02-19 14:37:04,088 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 833 selfloop transitions, 106 changer transitions 22/974 dead transitions. [2024-02-19 14:37:04,088 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 974 transitions, 19680 flow [2024-02-19 14:37:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:37:04,089 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:37:04,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-02-19 14:37:04,090 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-02-19 14:37:04,091 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-02-19 14:37:04,091 INFO L507 AbstractCegarLoop]: Abstraction has has 92 places, 974 transitions, 19680 flow [2024-02-19 14:37:04,091 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 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 14:37:04,091 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:04,091 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] [2024-02-19 14:37:04,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:04,300 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 14:37:04,300 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 14:37:04,300 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1384894328, now seen corresponding path program 1 times [2024-02-19 14:37:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:04,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1895710422] [2024-02-19 14:37:04,301 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:04,301 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:04,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:04,393 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 14:37:04,394 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:04,394 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1895710422] [2024-02-19 14:37:04,394 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1895710422] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:37:04,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:37:04,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:37:04,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1036389327] [2024-02-19 14:37:04,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:04,394 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:37:04,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:04,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:37:04,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:37:04,395 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:04,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 974 transitions, 19680 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:04,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:04,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:04,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:04,937 INFO L124 PetriNetUnfolderBase]: 2161/3307 cut-off events. [2024-02-19 14:37:04,938 INFO L125 PetriNetUnfolderBase]: For 2628/2628 co-relation queries the response was YES. [2024-02-19 14:37:04,941 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35786 conditions, 3307 events. 2161/3307 cut-off events. For 2628/2628 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16483 event pairs, 10 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 33136. Up to 2640 conditions per place. [2024-02-19 14:37:04,963 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 951 selfloop transitions, 62 changer transitions 51/1065 dead transitions. [2024-02-19 14:37:04,963 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 1065 transitions, 23683 flow [2024-02-19 14:37:04,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:37:04,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:37:04,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-02-19 14:37:04,964 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-19 14:37:04,964 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-02-19 14:37:04,965 INFO L507 AbstractCegarLoop]: Abstraction has has 98 places, 1065 transitions, 23683 flow [2024-02-19 14:37:04,965 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:04,965 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:04,965 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] [2024-02-19 14:37:04,965 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-19 14:37:04,965 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 14:37:04,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:04,966 INFO L85 PathProgramCache]: Analyzing trace with hash 474632315, now seen corresponding path program 1 times [2024-02-19 14:37:04,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:04,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487429511] [2024-02-19 14:37:04,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:04,966 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:04,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:05,063 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 14:37:05,063 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:05,063 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487429511] [2024-02-19 14:37:05,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487429511] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:37:05,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:37:05,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:37:05,064 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239331634] [2024-02-19 14:37:05,064 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:05,064 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:37:05,064 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:05,065 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:37:05,065 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:37:05,068 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:05,068 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 1065 transitions, 23683 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:05,068 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:05,068 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:05,068 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:05,734 INFO L124 PetriNetUnfolderBase]: 2279/3527 cut-off events. [2024-02-19 14:37:05,734 INFO L125 PetriNetUnfolderBase]: For 2612/2612 co-relation queries the response was YES. [2024-02-19 14:37:05,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41730 conditions, 3527 events. 2279/3527 cut-off events. For 2612/2612 co-relation queries the response was YES. Maximal size of possible extension queue 215. Compared 18227 event pairs, 10 based on Foata normal form. 0/2479 useless extension candidates. Maximal degree in co-relation 38676. Up to 2722 conditions per place. [2024-02-19 14:37:05,768 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 985 selfloop transitions, 63 changer transitions 99/1148 dead transitions. [2024-02-19 14:37:05,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1148 transitions, 27874 flow [2024-02-19 14:37:05,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:37:05,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:37:05,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-02-19 14:37:05,769 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-02-19 14:37:05,770 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-02-19 14:37:05,770 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 1148 transitions, 27874 flow [2024-02-19 14:37:05,770 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:05,770 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:05,770 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] [2024-02-19 14:37:05,770 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-19 14:37:05,770 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 14:37:05,771 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:05,771 INFO L85 PathProgramCache]: Analyzing trace with hash -286032140, now seen corresponding path program 2 times [2024-02-19 14:37:05,771 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:05,771 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1490145064] [2024-02-19 14:37:05,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:05,772 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:05,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:05,906 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 14:37:05,906 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:05,906 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1490145064] [2024-02-19 14:37:05,907 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1490145064] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:05,907 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [748427456] [2024-02-19 14:37:05,907 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:37:05,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:05,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:05,908 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 14:37:05,909 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 14:37:05,977 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:37:05,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:05,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:05,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:06,047 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 14:37:06,047 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:06,367 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 14:37:06,368 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [748427456] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:06,368 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:06,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-19 14:37:06,369 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754042195] [2024-02-19 14:37:06,369 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:06,369 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:37:06,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:06,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:37:06,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:06,374 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:06,374 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 104 places, 1148 transitions, 27874 flow. Second operand has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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 14:37:06,374 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:06,374 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:06,374 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:07,935 INFO L124 PetriNetUnfolderBase]: 3842/5932 cut-off events. [2024-02-19 14:37:07,935 INFO L125 PetriNetUnfolderBase]: For 3891/3891 co-relation queries the response was YES. [2024-02-19 14:37:07,940 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76412 conditions, 5932 events. 3842/5932 cut-off events. For 3891/3891 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33627 event pairs, 18 based on Foata normal form. 0/4142 useless extension candidates. Maximal degree in co-relation 71030. Up to 4971 conditions per place. [2024-02-19 14:37:08,040 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1531 selfloop transitions, 338 changer transitions 99/1969 dead transitions. [2024-02-19 14:37:08,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1969 transitions, 51860 flow [2024-02-19 14:37:08,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-19 14:37:08,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-19 14:37:08,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 327 transitions. [2024-02-19 14:37:08,042 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5505050505050505 [2024-02-19 14:37:08,042 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-02-19 14:37:08,043 INFO L507 AbstractCegarLoop]: Abstraction has has 125 places, 1969 transitions, 51860 flow [2024-02-19 14:37:08,043 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.333333333333333) internal successors, (95), 15 states have internal predecessors, (95), 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 14:37:08,043 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:08,043 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] [2024-02-19 14:37:08,056 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:08,254 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 14:37:08,254 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 14:37:08,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:08,255 INFO L85 PathProgramCache]: Analyzing trace with hash 665055356, now seen corresponding path program 3 times [2024-02-19 14:37:08,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:08,256 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902947087] [2024-02-19 14:37:08,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:08,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:08,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:08,367 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 14:37:08,367 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:08,367 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902947087] [2024-02-19 14:37:08,367 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902947087] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:37:08,367 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:37:08,368 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:37:08,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868078873] [2024-02-19 14:37:08,368 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:08,368 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:37:08,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:08,369 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:37:08,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:37:08,373 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:08,373 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 1969 transitions, 51860 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:08,373 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:08,373 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:08,373 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:09,952 INFO L124 PetriNetUnfolderBase]: 3889/6003 cut-off events. [2024-02-19 14:37:09,952 INFO L125 PetriNetUnfolderBase]: For 4055/4055 co-relation queries the response was YES. [2024-02-19 14:37:09,957 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83310 conditions, 6003 events. 3889/6003 cut-off events. For 4055/4055 co-relation queries the response was YES. Maximal size of possible extension queue 367. Compared 34101 event pairs, 12 based on Foata normal form. 0/4197 useless extension candidates. Maximal degree in co-relation 77522. Up to 5031 conditions per place. [2024-02-19 14:37:10,000 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1822 selfloop transitions, 72 changer transitions 101/1996 dead transitions. [2024-02-19 14:37:10,000 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 131 places, 1996 transitions, 56570 flow [2024-02-19 14:37:10,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:37:10,000 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:37:10,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 106 transitions. [2024-02-19 14:37:10,001 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5608465608465608 [2024-02-19 14:37:10,001 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 101 predicate places. [2024-02-19 14:37:10,001 INFO L507 AbstractCegarLoop]: Abstraction has has 131 places, 1996 transitions, 56570 flow [2024-02-19 14:37:10,001 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:10,001 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:10,001 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] [2024-02-19 14:37:10,001 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-02-19 14:37:10,002 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 14:37:10,002 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:10,002 INFO L85 PathProgramCache]: Analyzing trace with hash -1170835946, now seen corresponding path program 4 times [2024-02-19 14:37:10,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:10,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [209063801] [2024-02-19 14:37:10,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:10,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:10,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:10,103 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 14:37:10,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:10,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [209063801] [2024-02-19 14:37:10,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [209063801] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:10,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1941183555] [2024-02-19 14:37:10,104 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:37:10,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:10,105 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:10,106 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 14:37:10,137 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 14:37:10,185 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:37:10,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:10,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:37:10,187 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:10,247 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 14:37:10,248 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:10,372 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 14:37:10,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1941183555] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:10,372 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:10,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-19 14:37:10,372 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [560319503] [2024-02-19 14:37:10,372 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:10,373 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:37:10,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:10,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:37:10,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:10,381 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:10,381 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 131 places, 1996 transitions, 56570 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 14:37:10,381 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:10,381 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:10,381 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:12,508 INFO L124 PetriNetUnfolderBase]: 3952/6095 cut-off events. [2024-02-19 14:37:12,509 INFO L125 PetriNetUnfolderBase]: For 3948/3948 co-relation queries the response was YES. [2024-02-19 14:37:12,514 INFO L83 FinitePrefix]: Finished finitePrefix Result has 90680 conditions, 6095 events. 3952/6095 cut-off events. For 3948/3948 co-relation queries the response was YES. Maximal size of possible extension queue 373. Compared 34664 event pairs, 12 based on Foata normal form. 0/4277 useless extension candidates. Maximal degree in co-relation 84518. Up to 5124 conditions per place. [2024-02-19 14:37:12,574 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1694 selfloop transitions, 236 changer transitions 101/2032 dead transitions. [2024-02-19 14:37:12,574 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 151 places, 2032 transitions, 61661 flow [2024-02-19 14:37:12,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:37:12,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:37:12,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 276 transitions. [2024-02-19 14:37:12,575 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-02-19 14:37:12,576 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 121 predicate places. [2024-02-19 14:37:12,576 INFO L507 AbstractCegarLoop]: Abstraction has has 151 places, 2032 transitions, 61661 flow [2024-02-19 14:37:12,576 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 14:37:12,576 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:12,576 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] [2024-02-19 14:37:12,589 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 14:37:12,777 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,SelfDestructingSolverStorable13 [2024-02-19 14:37:12,777 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 14:37:12,777 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:12,777 INFO L85 PathProgramCache]: Analyzing trace with hash 765555421, now seen corresponding path program 2 times [2024-02-19 14:37:12,777 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:12,777 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255611704] [2024-02-19 14:37:12,777 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:12,778 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:12,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:12,892 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 14:37:12,892 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:12,892 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255611704] [2024-02-19 14:37:12,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255611704] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:37:12,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:37:12,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:37:12,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [233326849] [2024-02-19 14:37:12,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:12,894 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:37:12,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:12,894 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:37:12,894 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:37:12,897 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:12,897 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 151 places, 2032 transitions, 61661 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:12,897 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:12,897 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:12,897 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:14,642 INFO L124 PetriNetUnfolderBase]: 4185/6473 cut-off events. [2024-02-19 14:37:14,643 INFO L125 PetriNetUnfolderBase]: For 4417/4417 co-relation queries the response was YES. [2024-02-19 14:37:14,649 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102792 conditions, 6473 events. 4185/6473 cut-off events. For 4417/4417 co-relation queries the response was YES. Maximal size of possible extension queue 397. Compared 37448 event pairs, 24 based on Foata normal form. 0/4549 useless extension candidates. Maximal degree in co-relation 95813. Up to 5813 conditions per place. [2024-02-19 14:37:14,713 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1928 selfloop transitions, 88 changer transitions 149/2166 dead transitions. [2024-02-19 14:37:14,714 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 157 places, 2166 transitions, 70095 flow [2024-02-19 14:37:14,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:37:14,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:37:14,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-02-19 14:37:14,714 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-02-19 14:37:14,715 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 127 predicate places. [2024-02-19 14:37:14,715 INFO L507 AbstractCegarLoop]: Abstraction has has 157 places, 2166 transitions, 70095 flow [2024-02-19 14:37:14,715 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:14,715 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:14,715 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] [2024-02-19 14:37:14,715 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-19 14:37:14,716 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 14:37:14,716 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:14,716 INFO L85 PathProgramCache]: Analyzing trace with hash 1889442171, now seen corresponding path program 3 times [2024-02-19 14:37:14,716 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:14,716 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922268716] [2024-02-19 14:37:14,716 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:14,716 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:14,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:14,810 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 14:37:14,810 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922268716] [2024-02-19 14:37:14,810 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [922268716] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:14,810 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1301242370] [2024-02-19 14:37:14,811 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:37:14,811 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:14,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:14,812 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 14:37:14,825 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 14:37:14,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:37:14,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:14,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:37:14,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:14,947 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 14:37:14,948 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:15,085 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 14:37:15,086 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1301242370] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:15,086 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:15,086 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-19 14:37:15,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053856768] [2024-02-19 14:37:15,086 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:15,086 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:37:15,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:15,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:37:15,088 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:15,094 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:15,094 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 157 places, 2166 transitions, 70095 flow. Second operand has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 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 14:37:15,094 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:15,094 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:15,094 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:17,488 INFO L124 PetriNetUnfolderBase]: 4286/6635 cut-off events. [2024-02-19 14:37:17,488 INFO L125 PetriNetUnfolderBase]: For 4429/4429 co-relation queries the response was YES. [2024-02-19 14:37:17,494 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111984 conditions, 6635 events. 4286/6635 cut-off events. For 4429/4429 co-relation queries the response was YES. Maximal size of possible extension queue 406. Compared 38603 event pairs, 18 based on Foata normal form. 0/4673 useless extension candidates. Maximal degree in co-relation 104540. Up to 6026 conditions per place. [2024-02-19 14:37:17,550 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1960 selfloop transitions, 110 changer transitions 149/2220 dead transitions. [2024-02-19 14:37:17,550 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 2220 transitions, 76297 flow [2024-02-19 14:37:17,551 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-19 14:37:17,551 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-19 14:37:17,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-02-19 14:37:17,551 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-02-19 14:37:17,552 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 138 predicate places. [2024-02-19 14:37:17,552 INFO L507 AbstractCegarLoop]: Abstraction has has 168 places, 2220 transitions, 76297 flow [2024-02-19 14:37:17,552 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.133333333333334) internal successors, (92), 15 states have internal predecessors, (92), 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 14:37:17,552 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:17,552 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] [2024-02-19 14:37:17,564 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 14:37:17,762 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,SelfDestructingSolverStorable15 [2024-02-19 14:37:17,762 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 14:37:17,762 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:17,763 INFO L85 PathProgramCache]: Analyzing trace with hash -775340104, now seen corresponding path program 5 times [2024-02-19 14:37:17,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:17,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80339942] [2024-02-19 14:37:17,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:17,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:17,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:17,871 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 14:37:17,872 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80339942] [2024-02-19 14:37:17,872 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80339942] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:17,872 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [468870960] [2024-02-19 14:37:17,872 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:37:17,874 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:17,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:17,875 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 14:37:17,891 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 14:37:17,953 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:37:17,954 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:17,955 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:17,955 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:18,022 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 14:37:18,023 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:18,288 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 14:37:18,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [468870960] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:18,288 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:18,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-02-19 14:37:18,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352703550] [2024-02-19 14:37:18,288 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:18,289 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:37:18,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:18,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:37:18,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:37:18,297 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:18,297 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 168 places, 2220 transitions, 76297 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 14:37:18,297 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:18,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:18,298 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:21,992 INFO L124 PetriNetUnfolderBase]: 5119/7848 cut-off events. [2024-02-19 14:37:21,993 INFO L125 PetriNetUnfolderBase]: For 5227/5227 co-relation queries the response was YES. [2024-02-19 14:37:22,001 INFO L83 FinitePrefix]: Finished finitePrefix Result has 140364 conditions, 7848 events. 5119/7848 cut-off events. For 5227/5227 co-relation queries the response was YES. Maximal size of possible extension queue 474. Compared 46224 event pairs, 30 based on Foata normal form. 0/5476 useless extension candidates. Maximal degree in co-relation 130649. Up to 7063 conditions per place. [2024-02-19 14:37:22,103 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1943 selfloop transitions, 502 changer transitions 149/2595 dead transitions. [2024-02-19 14:37:22,103 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 194 places, 2595 transitions, 94363 flow [2024-02-19 14:37:22,103 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-19 14:37:22,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-19 14:37:22,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 359 transitions. [2024-02-19 14:37:22,105 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4924554183813443 [2024-02-19 14:37:22,105 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 164 predicate places. [2024-02-19 14:37:22,105 INFO L507 AbstractCegarLoop]: Abstraction has has 194 places, 2595 transitions, 94363 flow [2024-02-19 14:37:22,105 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 14:37:22,106 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:22,106 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] [2024-02-19 14:37:22,119 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:22,319 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-02-19 14:37:22,320 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 14:37:22,320 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:22,320 INFO L85 PathProgramCache]: Analyzing trace with hash 87852144, now seen corresponding path program 6 times [2024-02-19 14:37:22,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:22,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1049607217] [2024-02-19 14:37:22,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:22,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:22,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:22,428 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 14:37:22,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1049607217] [2024-02-19 14:37:22,429 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1049607217] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:22,429 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218228691] [2024-02-19 14:37:22,429 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:37:22,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:22,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:22,430 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:37:22,432 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-19 14:37:22,522 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:37:22,522 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:22,524 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:22,524 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:22,592 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 14:37:22,592 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:22,703 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 14:37:22,704 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1218228691] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:22,704 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:22,704 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-02-19 14:37:22,704 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020615369] [2024-02-19 14:37:22,704 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:22,704 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:37:22,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:22,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:37:22,705 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:37:22,711 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:22,711 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 2595 transitions, 94363 flow. Second operand has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 14:37:22,712 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:22,712 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:22,712 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:26,045 INFO L124 PetriNetUnfolderBase]: 5216/7995 cut-off events. [2024-02-19 14:37:26,045 INFO L125 PetriNetUnfolderBase]: For 5218/5218 co-relation queries the response was YES. [2024-02-19 14:37:26,053 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150974 conditions, 7995 events. 5216/7995 cut-off events. For 5218/5218 co-relation queries the response was YES. Maximal size of possible extension queue 484. Compared 47151 event pairs, 32 based on Foata normal form. 0/5587 useless extension candidates. Maximal degree in co-relation 140728. Up to 7182 conditions per place. [2024-02-19 14:37:26,152 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 2164 selfloop transitions, 344 changer transitions 149/2658 dead transitions. [2024-02-19 14:37:26,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 2658 transitions, 101975 flow [2024-02-19 14:37:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 14:37:26,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 14:37:26,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 247 transitions. [2024-02-19 14:37:26,154 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-02-19 14:37:26,154 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 182 predicate places. [2024-02-19 14:37:26,154 INFO L507 AbstractCegarLoop]: Abstraction has has 212 places, 2658 transitions, 101975 flow [2024-02-19 14:37:26,154 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 5.882352941176471) internal successors, (100), 17 states have internal predecessors, (100), 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 14:37:26,154 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:26,155 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] [2024-02-19 14:37:26,166 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:26,355 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-19 14:37:26,355 INFO L432 AbstractCegarLoop]: === Iteration 19 === 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 14:37:26,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:26,356 INFO L85 PathProgramCache]: Analyzing trace with hash -1162588261, now seen corresponding path program 9 times [2024-02-19 14:37:26,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:26,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1740103751] [2024-02-19 14:37:26,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:26,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:26,438 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 14:37:26,439 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1740103751] [2024-02-19 14:37:26,439 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1740103751] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:26,439 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1870799674] [2024-02-19 14:37:26,439 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-19 14:37:26,440 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:26,440 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:26,441 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:37:26,444 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-19 14:37:26,520 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-19 14:37:26,521 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:26,522 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:26,523 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:26,598 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 14:37:26,598 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:27,040 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 14:37:27,040 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1870799674] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:27,040 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:27,040 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-02-19 14:37:27,040 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194031475] [2024-02-19 14:37:27,041 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:27,041 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-19 14:37:27,041 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:27,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-19 14:37:27,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-02-19 14:37:27,047 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:27,047 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 2658 transitions, 101975 flow. Second operand has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 14:37:27,048 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:27,048 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:27,048 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:32,030 INFO L124 PetriNetUnfolderBase]: 6974/10756 cut-off events. [2024-02-19 14:37:32,030 INFO L125 PetriNetUnfolderBase]: For 5826/5826 co-relation queries the response was YES. [2024-02-19 14:37:32,040 INFO L83 FinitePrefix]: Finished finitePrefix Result has 213886 conditions, 10756 events. 6974/10756 cut-off events. For 5826/5826 co-relation queries the response was YES. Maximal size of possible extension queue 658. Compared 67350 event pairs, 38 based on Foata normal form. 0/7490 useless extension candidates. Maximal degree in co-relation 199413. Up to 9908 conditions per place. [2024-02-19 14:37:32,164 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 2718 selfloop transitions, 758 changer transitions 149/3626 dead transitions. [2024-02-19 14:37:32,164 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 238 places, 3626 transitions, 146534 flow [2024-02-19 14:37:32,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-19 14:37:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-19 14:37:32,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 374 transitions. [2024-02-19 14:37:32,166 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5130315500685871 [2024-02-19 14:37:32,166 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 208 predicate places. [2024-02-19 14:37:32,166 INFO L507 AbstractCegarLoop]: Abstraction has has 238 places, 3626 transitions, 146534 flow [2024-02-19 14:37:32,166 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 6.4) internal successors, (96), 15 states have internal predecessors, (96), 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 14:37:32,166 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:32,167 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] [2024-02-19 14:37:32,177 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:32,377 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:32,378 INFO L432 AbstractCegarLoop]: === Iteration 20 === 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 14:37:32,378 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:32,378 INFO L85 PathProgramCache]: Analyzing trace with hash -2048386541, now seen corresponding path program 10 times [2024-02-19 14:37:32,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:32,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1726658347] [2024-02-19 14:37:32,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:32,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:32,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:32,664 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 14:37:32,664 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1726658347] [2024-02-19 14:37:32,664 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1726658347] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:32,664 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [505751361] [2024-02-19 14:37:32,665 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-19 14:37:32,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:32,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:32,666 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:37:32,708 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-19 14:37:32,759 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-19 14:37:32,760 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:32,761 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:37:32,761 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:32,832 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 14:37:32,832 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:33,114 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 14:37:33,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [505751361] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:33,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:33,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-02-19 14:37:33,115 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926696890] [2024-02-19 14:37:33,115 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:33,115 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 14:37:33,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:33,116 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 14:37:33,116 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:37:33,119 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:33,119 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 3626 transitions, 146534 flow. Second operand has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 14:37:33,119 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:33,119 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:33,119 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:41,348 INFO L124 PetriNetUnfolderBase]: 7676/12113 cut-off events. [2024-02-19 14:37:41,348 INFO L125 PetriNetUnfolderBase]: For 6235/6235 co-relation queries the response was YES. [2024-02-19 14:37:41,359 INFO L83 FinitePrefix]: Finished finitePrefix Result has 252798 conditions, 12113 events. 7676/12113 cut-off events. For 6235/6235 co-relation queries the response was YES. Maximal size of possible extension queue 754. Compared 80572 event pairs, 44 based on Foata normal form. 0/8525 useless extension candidates. Maximal degree in co-relation 235292. Up to 11216 conditions per place. [2024-02-19 14:37:41,501 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3294 selfloop transitions, 753 changer transitions 170/4218 dead transitions. [2024-02-19 14:37:41,502 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 262 places, 4218 transitions, 179013 flow [2024-02-19 14:37:41,502 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-19 14:37:41,502 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-19 14:37:41,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 340 transitions. [2024-02-19 14:37:41,503 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-02-19 14:37:41,503 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 232 predicate places. [2024-02-19 14:37:41,503 INFO L507 AbstractCegarLoop]: Abstraction has has 262 places, 4218 transitions, 179013 flow [2024-02-19 14:37:41,504 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.5) internal successors, (91), 14 states have internal predecessors, (91), 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 14:37:41,504 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:41,504 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] [2024-02-19 14:37:41,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-19 14:37:41,714 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:41,715 INFO L432 AbstractCegarLoop]: === Iteration 21 === 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 14:37:41,715 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:41,715 INFO L85 PathProgramCache]: Analyzing trace with hash -2140804873, now seen corresponding path program 4 times [2024-02-19 14:37:41,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:41,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899310351] [2024-02-19 14:37:41,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:41,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:41,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:41,801 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 14:37:41,801 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:41,801 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899310351] [2024-02-19 14:37:41,801 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899310351] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:37:41,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:37:41,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:37:41,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030982691] [2024-02-19 14:37:41,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:37:41,804 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:37:41,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:41,804 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:37:41,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:37:41,806 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:41,806 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 262 places, 4218 transitions, 179013 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:41,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:41,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:41,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:37:52,246 INFO L124 PetriNetUnfolderBase]: 7642/12064 cut-off events. [2024-02-19 14:37:52,246 INFO L125 PetriNetUnfolderBase]: For 6439/6439 co-relation queries the response was YES. [2024-02-19 14:37:52,257 INFO L83 FinitePrefix]: Finished finitePrefix Result has 263763 conditions, 12064 events. 7642/12064 cut-off events. For 6439/6439 co-relation queries the response was YES. Maximal size of possible extension queue 752. Compared 80291 event pairs, 46 based on Foata normal form. 0/8506 useless extension candidates. Maximal degree in co-relation 245485. Up to 11288 conditions per place. [2024-02-19 14:37:52,515 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3893 selfloop transitions, 115 changer transitions 196/4205 dead transitions. [2024-02-19 14:37:52,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 268 places, 4205 transitions, 186866 flow [2024-02-19 14:37:52,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:37:52,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:37:52,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-02-19 14:37:52,516 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-02-19 14:37:52,516 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 238 predicate places. [2024-02-19 14:37:52,516 INFO L507 AbstractCegarLoop]: Abstraction has has 268 places, 4205 transitions, 186866 flow [2024-02-19 14:37:52,517 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:37:52,517 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:37:52,517 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] [2024-02-19 14:37:52,517 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-02-19 14:37:52,518 INFO L432 AbstractCegarLoop]: === Iteration 22 === 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 14:37:52,518 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:37:52,518 INFO L85 PathProgramCache]: Analyzing trace with hash 452615545, now seen corresponding path program 11 times [2024-02-19 14:37:52,519 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:37:52,519 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724150131] [2024-02-19 14:37:52,519 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:37:52,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:37:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:37:52,609 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 14:37:52,610 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:37:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724150131] [2024-02-19 14:37:52,610 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724150131] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:37:52,610 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [79647407] [2024-02-19 14:37:52,610 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:37:52,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:37:52,610 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:37:52,611 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:37:52,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-19 14:37:52,707 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:37:52,707 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:37:52,708 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:37:52,709 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:37:52,782 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 14:37:52,782 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:37:52,887 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 14:37:52,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [79647407] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:37:52,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:37:52,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-19 14:37:52,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519914462] [2024-02-19 14:37:52,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:37:52,889 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:37:52,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:37:52,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:37:52,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:37:52,894 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:37:52,894 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 268 places, 4205 transitions, 186866 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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 14:37:52,894 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:37:52,894 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:37:52,895 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:04,255 INFO L124 PetriNetUnfolderBase]: 7714/12183 cut-off events. [2024-02-19 14:38:04,255 INFO L125 PetriNetUnfolderBase]: For 6245/6245 co-relation queries the response was YES. [2024-02-19 14:38:04,264 INFO L83 FinitePrefix]: Finished finitePrefix Result has 278512 conditions, 12183 events. 7714/12183 cut-off events. For 6245/6245 co-relation queries the response was YES. Maximal size of possible extension queue 770. Compared 81198 event pairs, 42 based on Foata normal form. 0/8619 useless extension candidates. Maximal degree in co-relation 259326. Up to 11408 conditions per place. [2024-02-19 14:38:04,401 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3546 selfloop transitions, 548 changer transitions 196/4291 dead transitions. [2024-02-19 14:38:04,402 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 286 places, 4291 transitions, 199263 flow [2024-02-19 14:38:04,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 14:38:04,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 14:38:04,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 259 transitions. [2024-02-19 14:38:04,403 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5048732943469786 [2024-02-19 14:38:04,403 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 256 predicate places. [2024-02-19 14:38:04,403 INFO L507 AbstractCegarLoop]: Abstraction has has 286 places, 4291 transitions, 199263 flow [2024-02-19 14:38:04,403 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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 14:38:04,403 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:04,404 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] [2024-02-19 14:38:04,416 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-19 14:38:04,614 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:38:04,614 INFO L432 AbstractCegarLoop]: === Iteration 23 === 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 14:38:04,615 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:04,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1300580251, now seen corresponding path program 12 times [2024-02-19 14:38:04,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:04,616 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [673397410] [2024-02-19 14:38:04,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:04,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:04,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:04,695 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 14:38:04,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [673397410] [2024-02-19 14:38:04,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [673397410] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:38:04,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1742455829] [2024-02-19 14:38:04,696 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:38:04,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:38:04,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:38:04,705 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:38:04,706 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-19 14:38:04,823 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:38:04,823 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:38:04,824 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:38:04,825 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:38:04,892 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 14:38:04,892 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:38:05,015 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 14:38:05,015 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1742455829] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:38:05,015 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:38:05,015 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-02-19 14:38:05,016 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1419463737] [2024-02-19 14:38:05,016 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:38:05,016 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-19 14:38:05,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:05,017 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-19 14:38:05,017 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-19 14:38:05,030 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:38:05,030 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 286 places, 4291 transitions, 199263 flow. Second operand has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 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 14:38:05,030 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:05,030 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:38:05,030 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:16,507 INFO L124 PetriNetUnfolderBase]: 7793/12327 cut-off events. [2024-02-19 14:38:16,507 INFO L125 PetriNetUnfolderBase]: For 6363/6363 co-relation queries the response was YES. [2024-02-19 14:38:16,518 INFO L83 FinitePrefix]: Finished finitePrefix Result has 294059 conditions, 12327 events. 7793/12327 cut-off events. For 6363/6363 co-relation queries the response was YES. Maximal size of possible extension queue 771. Compared 82522 event pairs, 44 based on Foata normal form. 0/8741 useless extension candidates. Maximal degree in co-relation 274003. Up to 11540 conditions per place. [2024-02-19 14:38:16,680 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3727 selfloop transitions, 434 changer transitions 196/4358 dead transitions. [2024-02-19 14:38:16,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 304 places, 4358 transitions, 211092 flow [2024-02-19 14:38:16,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-19 14:38:16,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-19 14:38:16,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 239 transitions. [2024-02-19 14:38:16,681 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46588693957115007 [2024-02-19 14:38:16,682 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 274 predicate places. [2024-02-19 14:38:16,682 INFO L507 AbstractCegarLoop]: Abstraction has has 304 places, 4358 transitions, 211092 flow [2024-02-19 14:38:16,682 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 6.714285714285714) internal successors, (94), 14 states have internal predecessors, (94), 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 14:38:16,682 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:16,682 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] [2024-02-19 14:38:16,693 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-02-19 14:38:16,892 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable22 [2024-02-19 14:38:16,893 INFO L432 AbstractCegarLoop]: === Iteration 24 === 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 14:38:16,893 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:16,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1468604871, now seen corresponding path program 13 times [2024-02-19 14:38:16,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:16,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828037243] [2024-02-19 14:38:16,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:16,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:16,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:16,986 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 14:38:16,987 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828037243] [2024-02-19 14:38:16,987 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828037243] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:38:16,987 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722815772] [2024-02-19 14:38:16,987 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:38:16,987 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:38:16,987 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:38:16,988 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:38:17,014 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-19 14:38:17,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:17,068 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:38:17,069 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:38:17,128 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 14:38:17,128 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:38:17,225 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 14:38:17,225 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722815772] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:38:17,225 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:38:17,226 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-19 14:38:17,226 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [186166127] [2024-02-19 14:38:17,226 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:38:17,226 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:38:17,227 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:17,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:38:17,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:38:17,229 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:38:17,229 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 304 places, 4358 transitions, 211092 flow. Second operand has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 14:38:17,229 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:17,229 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:38:17,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:28,800 INFO L124 PetriNetUnfolderBase]: 7769/12246 cut-off events. [2024-02-19 14:38:28,800 INFO L125 PetriNetUnfolderBase]: For 6242/6242 co-relation queries the response was YES. [2024-02-19 14:38:28,810 INFO L83 FinitePrefix]: Finished finitePrefix Result has 304427 conditions, 12246 events. 7769/12246 cut-off events. For 6242/6242 co-relation queries the response was YES. Maximal size of possible extension queue 769. Compared 81500 event pairs, 40 based on Foata normal form. 0/8698 useless extension candidates. Maximal degree in co-relation 283913. Up to 11466 conditions per place. [2024-02-19 14:38:28,975 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3573 selfloop transitions, 535 changer transitions 196/4305 dead transitions. [2024-02-19 14:38:28,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 324 places, 4305 transitions, 217105 flow [2024-02-19 14:38:28,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-19 14:38:28,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-19 14:38:28,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-02-19 14:38:28,977 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47795414462081126 [2024-02-19 14:38:28,977 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 294 predicate places. [2024-02-19 14:38:28,977 INFO L507 AbstractCegarLoop]: Abstraction has has 324 places, 4305 transitions, 217105 flow [2024-02-19 14:38:28,977 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.25) internal successors, (100), 16 states have internal predecessors, (100), 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 14:38:28,977 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:28,977 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] [2024-02-19 14:38:28,988 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-02-19 14:38:29,178 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:38:29,178 INFO L432 AbstractCegarLoop]: === Iteration 25 === 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 14:38:29,178 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:29,178 INFO L85 PathProgramCache]: Analyzing trace with hash 1145730586, now seen corresponding path program 7 times [2024-02-19 14:38:29,178 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:29,179 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1591346527] [2024-02-19 14:38:29,179 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:29,179 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:29,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:29,267 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 14:38:29,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:29,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1591346527] [2024-02-19 14:38:29,268 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1591346527] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:38:29,268 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:38:29,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:38:29,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200223817] [2024-02-19 14:38:29,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:38:29,270 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:38:29,272 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:29,272 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:38:29,272 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:38:29,277 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:38:29,278 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 324 places, 4305 transitions, 217105 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:38:29,278 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:29,278 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:38:29,278 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:41,419 INFO L124 PetriNetUnfolderBase]: 7790/12275 cut-off events. [2024-02-19 14:38:41,419 INFO L125 PetriNetUnfolderBase]: For 6352/6352 co-relation queries the response was YES. [2024-02-19 14:38:41,430 INFO L83 FinitePrefix]: Finished finitePrefix Result has 317350 conditions, 12275 events. 7790/12275 cut-off events. For 6352/6352 co-relation queries the response was YES. Maximal size of possible extension queue 768. Compared 81768 event pairs, 44 based on Foata normal form. 0/8717 useless extension candidates. Maximal degree in co-relation 296028. Up to 11567 conditions per place. [2024-02-19 14:38:41,603 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3991 selfloop transitions, 128 changer transitions 201/4321 dead transitions. [2024-02-19 14:38:41,603 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 330 places, 4321 transitions, 226548 flow [2024-02-19 14:38:41,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:38:41,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:38:41,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-02-19 14:38:41,604 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-19 14:38:41,604 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 300 predicate places. [2024-02-19 14:38:41,605 INFO L507 AbstractCegarLoop]: Abstraction has has 330 places, 4321 transitions, 226548 flow [2024-02-19 14:38:41,605 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:38:41,605 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:41,605 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] [2024-02-19 14:38:41,605 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-19 14:38:41,605 INFO L432 AbstractCegarLoop]: === Iteration 26 === 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 14:38:41,605 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:41,606 INFO L85 PathProgramCache]: Analyzing trace with hash -2136544178, now seen corresponding path program 8 times [2024-02-19 14:38:41,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:41,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017996276] [2024-02-19 14:38:41,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:41,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:41,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:41,698 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 14:38:41,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:41,698 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017996276] [2024-02-19 14:38:41,698 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017996276] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:38:41,698 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:38:41,699 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:38:41,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449841900] [2024-02-19 14:38:41,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:38:41,699 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:38:41,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:41,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:38:41,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:38:41,706 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:38:41,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 330 places, 4321 transitions, 226548 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:38:41,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:41,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:38:41,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:38:55,289 INFO L124 PetriNetUnfolderBase]: 7808/12301 cut-off events. [2024-02-19 14:38:55,290 INFO L125 PetriNetUnfolderBase]: For 6356/6356 co-relation queries the response was YES. [2024-02-19 14:38:55,301 INFO L83 FinitePrefix]: Finished finitePrefix Result has 330251 conditions, 12301 events. 7808/12301 cut-off events. For 6356/6356 co-relation queries the response was YES. Maximal size of possible extension queue 772. Compared 81927 event pairs, 44 based on Foata normal form. 0/8735 useless extension candidates. Maximal degree in co-relation 308121. Up to 11593 conditions per place. [2024-02-19 14:38:55,481 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3994 selfloop transitions, 130 changer transitions 207/4332 dead transitions. [2024-02-19 14:38:55,482 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 336 places, 4332 transitions, 235788 flow [2024-02-19 14:38:55,482 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:38:55,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:38:55,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-02-19 14:38:55,482 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-02-19 14:38:55,483 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 306 predicate places. [2024-02-19 14:38:55,483 INFO L507 AbstractCegarLoop]: Abstraction has has 336 places, 4332 transitions, 235788 flow [2024-02-19 14:38:55,483 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:38:55,483 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:38:55,483 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] [2024-02-19 14:38:55,483 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-19 14:38:55,483 INFO L432 AbstractCegarLoop]: === Iteration 27 === 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 14:38:55,483 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:38:55,483 INFO L85 PathProgramCache]: Analyzing trace with hash -259232934, now seen corresponding path program 9 times [2024-02-19 14:38:55,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:38:55,483 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [629467472] [2024-02-19 14:38:55,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:38:55,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:38:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:38:55,574 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 14:38:55,574 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:38:55,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [629467472] [2024-02-19 14:38:55,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [629467472] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:38:55,575 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:38:55,575 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:38:55,575 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757459795] [2024-02-19 14:38:55,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:38:55,575 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:38:55,575 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:38:55,575 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:38:55,575 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:38:55,582 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:38:55,582 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 336 places, 4332 transitions, 235788 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:38:55,582 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:38:55,582 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:38:55,582 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:11,019 INFO L124 PetriNetUnfolderBase]: 7881/12408 cut-off events. [2024-02-19 14:39:11,019 INFO L125 PetriNetUnfolderBase]: For 6475/6475 co-relation queries the response was YES. [2024-02-19 14:39:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345478 conditions, 12408 events. 7881/12408 cut-off events. For 6475/6475 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 82619 event pairs, 38 based on Foata normal form. 0/8814 useless extension candidates. Maximal degree in co-relation 322540. Up to 11672 conditions per place. [2024-02-19 14:39:11,196 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4022 selfloop transitions, 143 changer transitions 207/4373 dead transitions. [2024-02-19 14:39:11,196 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 342 places, 4373 transitions, 246764 flow [2024-02-19 14:39:11,197 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:39:11,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:39:11,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-19 14:39:11,197 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-19 14:39:11,198 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 312 predicate places. [2024-02-19 14:39:11,198 INFO L507 AbstractCegarLoop]: Abstraction has has 342 places, 4373 transitions, 246764 flow [2024-02-19 14:39:11,198 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:39:11,198 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:11,198 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] [2024-02-19 14:39:11,198 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-19 14:39:11,198 INFO L432 AbstractCegarLoop]: === Iteration 28 === 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 14:39:11,198 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:11,199 INFO L85 PathProgramCache]: Analyzing trace with hash -1353324522, now seen corresponding path program 10 times [2024-02-19 14:39:11,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:39:11,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [634376204] [2024-02-19 14:39:11,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:11,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:39:11,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:11,287 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 14:39:11,288 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:39:11,288 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [634376204] [2024-02-19 14:39:11,288 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [634376204] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:11,288 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:11,288 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:39:11,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616919653] [2024-02-19 14:39:11,288 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:11,288 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:39:11,289 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:39:11,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:39:11,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:39:11,298 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:39:11,298 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 342 places, 4373 transitions, 246764 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:39:11,298 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:11,298 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:39:11,299 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:25,884 INFO L124 PetriNetUnfolderBase]: 7897/12434 cut-off events. [2024-02-19 14:39:25,884 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-02-19 14:39:25,894 INFO L83 FinitePrefix]: Finished finitePrefix Result has 358565 conditions, 12434 events. 7897/12434 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 791. Compared 82838 event pairs, 40 based on Foata normal form. 0/8836 useless extension candidates. Maximal degree in co-relation 334819. Up to 11698 conditions per place. [2024-02-19 14:39:26,080 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4036 selfloop transitions, 137 changer transitions 207/4381 dead transitions. [2024-02-19 14:39:26,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 348 places, 4381 transitions, 255978 flow [2024-02-19 14:39:26,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:39:26,081 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:39:26,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-19 14:39:26,081 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-19 14:39:26,082 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 318 predicate places. [2024-02-19 14:39:26,082 INFO L507 AbstractCegarLoop]: Abstraction has has 348 places, 4381 transitions, 255978 flow [2024-02-19 14:39:26,082 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:39:26,082 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:26,082 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] [2024-02-19 14:39:26,082 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-02-19 14:39:26,083 INFO L432 AbstractCegarLoop]: === Iteration 29 === 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 14:39:26,083 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:26,083 INFO L85 PathProgramCache]: Analyzing trace with hash 160126475, now seen corresponding path program 14 times [2024-02-19 14:39:26,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:39:26,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122942782] [2024-02-19 14:39:26,083 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:26,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:39:26,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:26,183 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 14:39:26,184 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:39:26,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122942782] [2024-02-19 14:39:26,184 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122942782] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:39:26,184 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1695269016] [2024-02-19 14:39:26,184 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:39:26,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:39:26,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:39:26,185 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:39:26,185 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-19 14:39:26,287 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:39:26,287 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:39:26,288 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:39:26,288 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:39:26,351 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 14:39:26,351 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:39:26,453 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 14:39:26,453 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1695269016] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:39:26,453 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:39:26,453 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-02-19 14:39:26,453 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1015190238] [2024-02-19 14:39:26,453 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:39:26,453 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:39:26,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:39:26,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:39:26,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:39:26,463 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:39:26,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 348 places, 4381 transitions, 255978 flow. Second operand has 16 states, 16 states have (on average 6.1875) internal successors, (99), 16 states have internal predecessors, (99), 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 14:39:26,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:26,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:39:26,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:39:45,315 INFO L124 PetriNetUnfolderBase]: 8366/13143 cut-off events. [2024-02-19 14:39:45,315 INFO L125 PetriNetUnfolderBase]: For 6346/6346 co-relation queries the response was YES. [2024-02-19 14:39:45,326 INFO L83 FinitePrefix]: Finished finitePrefix Result has 392051 conditions, 13143 events. 8366/13143 cut-off events. For 6346/6346 co-relation queries the response was YES. Maximal size of possible extension queue 833. Compared 87874 event pairs, 52 based on Foata normal form. 0/9319 useless extension candidates. Maximal degree in co-relation 367125. Up to 12373 conditions per place. [2024-02-19 14:39:45,522 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3979 selfloop transitions, 508 changer transitions 207/4695 dead transitions. [2024-02-19 14:39:45,522 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 371 places, 4695 transitions, 283696 flow [2024-02-19 14:39:45,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-19 14:39:45,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-19 14:39:45,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 288 transitions. [2024-02-19 14:39:45,524 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-19 14:39:45,524 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 341 predicate places. [2024-02-19 14:39:45,524 INFO L507 AbstractCegarLoop]: Abstraction has has 371 places, 4695 transitions, 283696 flow [2024-02-19 14:39:45,524 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.1875) internal successors, (99), 16 states have internal predecessors, (99), 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 14:39:45,524 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:39:45,525 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] [2024-02-19 14:39:45,536 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-02-19 14:39:45,736 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-02-19 14:39:45,736 INFO L432 AbstractCegarLoop]: === Iteration 30 === 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 14:39:45,736 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:39:45,736 INFO L85 PathProgramCache]: Analyzing trace with hash -686350377, now seen corresponding path program 15 times [2024-02-19 14:39:45,736 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:39:45,736 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [180398077] [2024-02-19 14:39:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:39:45,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:39:45,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:39:45,820 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 14:39:45,821 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:39:45,821 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [180398077] [2024-02-19 14:39:45,821 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [180398077] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:39:45,821 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:39:45,821 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:39:45,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [53836744] [2024-02-19 14:39:45,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:39:45,822 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:39:45,822 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:39:45,822 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:39:45,822 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:39:45,829 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:39:45,830 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 371 places, 4695 transitions, 283696 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:39:45,830 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:39:45,830 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:39:45,830 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:40:05,848 INFO L124 PetriNetUnfolderBase]: 8401/13208 cut-off events. [2024-02-19 14:40:05,848 INFO L125 PetriNetUnfolderBase]: For 6583/6583 co-relation queries the response was YES. [2024-02-19 14:40:05,860 INFO L83 FinitePrefix]: Finished finitePrefix Result has 407133 conditions, 13208 events. 8401/13208 cut-off events. For 6583/6583 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 88627 event pairs, 34 based on Foata normal form. 0/9378 useless extension candidates. Maximal degree in co-relation 381387. Up to 12438 conditions per place. [2024-02-19 14:40:06,071 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4359 selfloop transitions, 164 changer transitions 207/4731 dead transitions. [2024-02-19 14:40:06,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 377 places, 4731 transitions, 295340 flow [2024-02-19 14:40:06,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:40:06,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:40:06,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 98 transitions. [2024-02-19 14:40:06,072 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5185185185185185 [2024-02-19 14:40:06,073 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 347 predicate places. [2024-02-19 14:40:06,073 INFO L507 AbstractCegarLoop]: Abstraction has has 377 places, 4731 transitions, 295340 flow [2024-02-19 14:40:06,073 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:06,073 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:40:06,073 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] [2024-02-19 14:40:06,073 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-02-19 14:40:06,073 INFO L432 AbstractCegarLoop]: === Iteration 31 === 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 14:40:06,074 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:40:06,074 INFO L85 PathProgramCache]: Analyzing trace with hash -612828649, now seen corresponding path program 16 times [2024-02-19 14:40:06,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:40:06,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230156419] [2024-02-19 14:40:06,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:40:06,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:40:06,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:40:06,169 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 14:40:06,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:40:06,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230156419] [2024-02-19 14:40:06,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [230156419] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:40:06,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:40:06,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:40:06,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157265763] [2024-02-19 14:40:06,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:40:06,170 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:40:06,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:40:06,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:40:06,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:40:06,177 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:40:06,177 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 377 places, 4731 transitions, 295340 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:06,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:40:06,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:40:06,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:40:25,973 INFO L124 PetriNetUnfolderBase]: 8402/13211 cut-off events. [2024-02-19 14:40:25,973 INFO L125 PetriNetUnfolderBase]: For 6502/6502 co-relation queries the response was YES. [2024-02-19 14:40:25,985 INFO L83 FinitePrefix]: Finished finitePrefix Result has 420353 conditions, 13211 events. 8402/13211 cut-off events. For 6502/6502 co-relation queries the response was YES. Maximal size of possible extension queue 830. Compared 88593 event pairs, 44 based on Foata normal form. 0/9381 useless extension candidates. Maximal degree in co-relation 393787. Up to 12445 conditions per place. [2024-02-19 14:40:26,322 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4382 selfloop transitions, 140 changer transitions 210/4733 dead transitions. [2024-02-19 14:40:26,322 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 383 places, 4733 transitions, 304928 flow [2024-02-19 14:40:26,322 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:40:26,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:40:26,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-02-19 14:40:26,323 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-02-19 14:40:26,323 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 353 predicate places. [2024-02-19 14:40:26,325 INFO L507 AbstractCegarLoop]: Abstraction has has 383 places, 4733 transitions, 304928 flow [2024-02-19 14:40:26,325 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:26,325 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:40:26,325 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] [2024-02-19 14:40:26,325 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-19 14:40:26,325 INFO L432 AbstractCegarLoop]: === Iteration 32 === 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 14:40:26,326 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:40:26,326 INFO L85 PathProgramCache]: Analyzing trace with hash -106482383, now seen corresponding path program 17 times [2024-02-19 14:40:26,326 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:40:26,326 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [572982071] [2024-02-19 14:40:26,326 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:40:26,326 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:40:26,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:40:26,417 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 14:40:26,417 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:40:26,417 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [572982071] [2024-02-19 14:40:26,417 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [572982071] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:40:26,417 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:40:26,418 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:40:26,418 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192400368] [2024-02-19 14:40:26,418 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:40:26,418 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:40:26,418 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:40:26,419 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:40:26,419 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:40:26,425 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:40:26,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 383 places, 4733 transitions, 304928 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:26,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:40:26,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:40:26,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:40:46,920 INFO L124 PetriNetUnfolderBase]: 8410/13223 cut-off events. [2024-02-19 14:40:46,920 INFO L125 PetriNetUnfolderBase]: For 6721/6721 co-relation queries the response was YES. [2024-02-19 14:40:46,931 INFO L83 FinitePrefix]: Finished finitePrefix Result has 433876 conditions, 13223 events. 8410/13223 cut-off events. For 6721/6721 co-relation queries the response was YES. Maximal size of possible extension queue 829. Compared 88720 event pairs, 46 based on Foata normal form. 0/9389 useless extension candidates. Maximal degree in co-relation 406490. Up to 12451 conditions per place. [2024-02-19 14:40:47,153 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4383 selfloop transitions, 142 changer transitions 214/4740 dead transitions. [2024-02-19 14:40:47,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 389 places, 4740 transitions, 314854 flow [2024-02-19 14:40:47,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:40:47,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:40:47,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-02-19 14:40:47,154 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-02-19 14:40:47,155 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 359 predicate places. [2024-02-19 14:40:47,155 INFO L507 AbstractCegarLoop]: Abstraction has has 389 places, 4740 transitions, 314854 flow [2024-02-19 14:40:47,155 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:47,155 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:40:47,155 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] [2024-02-19 14:40:47,155 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-19 14:40:47,155 INFO L432 AbstractCegarLoop]: === Iteration 33 === 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 14:40:47,156 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:40:47,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1501832799, now seen corresponding path program 18 times [2024-02-19 14:40:47,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:40:47,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777271383] [2024-02-19 14:40:47,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:40:47,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:40:47,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:40:47,227 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 14:40:47,227 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:40:47,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777271383] [2024-02-19 14:40:47,227 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777271383] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:40:47,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:40:47,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:40:47,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [970158394] [2024-02-19 14:40:47,228 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:40:47,228 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:40:47,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:40:47,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:40:47,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:40:47,232 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:40:47,232 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 389 places, 4740 transitions, 314854 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:40:47,232 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:40:47,232 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:40:47,233 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:41:08,853 INFO L124 PetriNetUnfolderBase]: 8435/13266 cut-off events. [2024-02-19 14:41:08,853 INFO L125 PetriNetUnfolderBase]: For 6264/6264 co-relation queries the response was YES. [2024-02-19 14:41:08,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 448481 conditions, 13266 events. 8435/13266 cut-off events. For 6264/6264 co-relation queries the response was YES. Maximal size of possible extension queue 834. Compared 89112 event pairs, 44 based on Foata normal form. 0/9426 useless extension candidates. Maximal degree in co-relation 420275. Up to 12494 conditions per place. [2024-02-19 14:41:09,079 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4402 selfloop transitions, 147 changer transitions 214/4764 dead transitions. [2024-02-19 14:41:09,079 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 395 places, 4764 transitions, 325976 flow [2024-02-19 14:41:09,079 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:41:09,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:41:09,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-02-19 14:41:09,080 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-02-19 14:41:09,080 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 365 predicate places. [2024-02-19 14:41:09,080 INFO L507 AbstractCegarLoop]: Abstraction has has 395 places, 4764 transitions, 325976 flow [2024-02-19 14:41:09,081 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:41:09,081 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:41:09,081 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] [2024-02-19 14:41:09,081 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-19 14:41:09,081 INFO L432 AbstractCegarLoop]: === Iteration 34 === 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 14:41:09,081 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:41:09,081 INFO L85 PathProgramCache]: Analyzing trace with hash 1841963385, now seen corresponding path program 19 times [2024-02-19 14:41:09,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:41:09,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [925094536] [2024-02-19 14:41:09,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:41:09,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:41:09,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:41:09,162 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 14:41:09,162 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:41:09,162 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [925094536] [2024-02-19 14:41:09,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [925094536] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:41:09,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [410466658] [2024-02-19 14:41:09,163 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:41:09,163 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:41:09,163 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:41:09,212 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:41:09,215 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-19 14:41:09,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:41:09,309 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-19 14:41:09,310 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:41:09,361 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 14:41:09,362 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:41:09,445 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 14:41:09,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [410466658] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-19 14:41:09,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-19 14:41:09,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 12 [2024-02-19 14:41:09,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478106560] [2024-02-19 14:41:09,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:41:09,446 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-19 14:41:09,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:41:09,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-19 14:41:09,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2024-02-19 14:41:09,451 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:41:09,451 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 395 places, 4764 transitions, 325976 flow. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 14:41:09,451 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:41:09,451 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:41:09,451 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:41:30,979 INFO L124 PetriNetUnfolderBase]: 8468/13338 cut-off events. [2024-02-19 14:41:30,979 INFO L125 PetriNetUnfolderBase]: For 6732/6732 co-relation queries the response was YES. [2024-02-19 14:41:30,990 INFO L83 FinitePrefix]: Finished finitePrefix Result has 464164 conditions, 13338 events. 8468/13338 cut-off events. For 6732/6732 co-relation queries the response was YES. Maximal size of possible extension queue 838. Compared 89880 event pairs, 44 based on Foata normal form. 0/9492 useless extension candidates. Maximal degree in co-relation 435102. Up to 12562 conditions per place. [2024-02-19 14:41:31,208 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4268 selfloop transitions, 383 changer transitions 224/4876 dead transitions. [2024-02-19 14:41:31,208 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 402 places, 4876 transitions, 343343 flow [2024-02-19 14:41:31,209 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-19 14:41:31,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-19 14:41:31,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 103 transitions. [2024-02-19 14:41:31,209 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47685185185185186 [2024-02-19 14:41:31,210 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 372 predicate places. [2024-02-19 14:41:31,210 INFO L507 AbstractCegarLoop]: Abstraction has has 402 places, 4876 transitions, 343343 flow [2024-02-19 14:41:31,210 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 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 14:41:31,210 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:41:31,210 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] [2024-02-19 14:41:31,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-19 14:41:31,422 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:41:31,422 INFO L432 AbstractCegarLoop]: === Iteration 35 === 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 14:41:31,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:41:31,423 INFO L85 PathProgramCache]: Analyzing trace with hash -1633745996, now seen corresponding path program 11 times [2024-02-19 14:41:31,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:41:31,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [530961552] [2024-02-19 14:41:31,423 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:41:31,423 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:41:31,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:41:31,512 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 14:41:31,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:41:31,512 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [530961552] [2024-02-19 14:41:31,512 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [530961552] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:41:31,512 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:41:31,512 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:41:31,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990156482] [2024-02-19 14:41:31,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:41:31,513 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:41:31,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:41:31,513 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:41:31,513 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:41:31,516 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:41:31,517 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 402 places, 4876 transitions, 343343 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:41:31,517 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:41:31,517 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:41:31,517 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:41:55,634 INFO L124 PetriNetUnfolderBase]: 8474/13402 cut-off events. [2024-02-19 14:41:55,634 INFO L125 PetriNetUnfolderBase]: For 6779/6779 co-relation queries the response was YES. [2024-02-19 14:41:55,645 INFO L83 FinitePrefix]: Finished finitePrefix Result has 479740 conditions, 13402 events. 8474/13402 cut-off events. For 6779/6779 co-relation queries the response was YES. Maximal size of possible extension queue 847. Compared 91017 event pairs, 50 based on Foata normal form. 0/9556 useless extension candidates. Maximal degree in co-relation 449635. Up to 12626 conditions per place. [2024-02-19 14:41:55,882 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4485 selfloop transitions, 163 changer transitions 279/4928 dead transitions. [2024-02-19 14:41:55,883 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 408 places, 4928 transitions, 356901 flow [2024-02-19 14:41:55,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:41:55,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:41:55,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-02-19 14:41:55,884 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-02-19 14:41:55,884 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 378 predicate places. [2024-02-19 14:41:55,884 INFO L507 AbstractCegarLoop]: Abstraction has has 408 places, 4928 transitions, 356901 flow [2024-02-19 14:41:55,884 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:41:55,884 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:41:55,885 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] [2024-02-19 14:41:55,885 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-19 14:41:55,885 INFO L432 AbstractCegarLoop]: === Iteration 36 === 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 14:41:55,885 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:41:55,885 INFO L85 PathProgramCache]: Analyzing trace with hash -305048576, now seen corresponding path program 12 times [2024-02-19 14:41:55,885 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:41:55,885 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1080011829] [2024-02-19 14:41:55,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:41:55,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:41:55,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:41:55,958 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 14:41:55,958 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:41:55,958 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1080011829] [2024-02-19 14:41:55,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1080011829] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:41:55,959 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:41:55,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:41:55,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508100777] [2024-02-19 14:41:55,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:41:55,959 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:41:55,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:41:55,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:41:55,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:41:55,961 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:41:55,961 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 408 places, 4928 transitions, 356901 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:41:55,961 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:41:55,961 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:41:55,961 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:42:23,417 INFO L124 PetriNetUnfolderBase]: 8493/13550 cut-off events. [2024-02-19 14:42:23,417 INFO L125 PetriNetUnfolderBase]: For 6416/6416 co-relation queries the response was YES. [2024-02-19 14:42:23,429 INFO L83 FinitePrefix]: Finished finitePrefix Result has 498357 conditions, 13550 events. 8493/13550 cut-off events. For 6416/6416 co-relation queries the response was YES. Maximal size of possible extension queue 869. Compared 93723 event pairs, 38 based on Foata normal form. 0/9704 useless extension candidates. Maximal degree in co-relation 466779. Up to 12768 conditions per place. [2024-02-19 14:42:23,677 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4503 selfloop transitions, 191 changer transitions 333/5028 dead transitions. [2024-02-19 14:42:23,678 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 414 places, 5028 transitions, 374270 flow [2024-02-19 14:42:23,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:42:23,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:42:23,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-19 14:42:23,679 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-19 14:42:23,679 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 384 predicate places. [2024-02-19 14:42:23,679 INFO L507 AbstractCegarLoop]: Abstraction has has 414 places, 5028 transitions, 374270 flow [2024-02-19 14:42:23,679 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:42:23,679 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:42:23,680 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] [2024-02-19 14:42:23,680 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-19 14:42:23,680 INFO L432 AbstractCegarLoop]: === Iteration 37 === 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 14:42:23,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:42:23,680 INFO L85 PathProgramCache]: Analyzing trace with hash -1267395711, now seen corresponding path program 20 times [2024-02-19 14:42:23,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:42:23,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124122697] [2024-02-19 14:42:23,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:42:23,681 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:42:23,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:42:23,766 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 14:42:23,766 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:42:23,766 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124122697] [2024-02-19 14:42:23,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124122697] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:42:23,767 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633102971] [2024-02-19 14:42:23,767 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:42:23,767 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:42:23,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:42:23,768 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:42:23,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-19 14:42:23,868 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:42:23,868 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:42:23,869 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:42:23,870 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:42:23,925 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 14:42:23,925 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:42:23,992 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 14:42:23,992 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633102971] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:42:23,993 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:42:23,993 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-02-19 14:42:23,993 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636517011] [2024-02-19 14:42:23,993 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:42:23,993 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:42:23,993 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:42:23,993 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:42:23,993 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:42:23,996 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:42:23,996 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 414 places, 5028 transitions, 374270 flow. Second operand has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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 14:42:23,996 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:42:23,996 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:42:23,996 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:43:02,522 INFO L124 PetriNetUnfolderBase]: 10509/17025 cut-off events. [2024-02-19 14:43:02,522 INFO L125 PetriNetUnfolderBase]: For 7554/7554 co-relation queries the response was YES. [2024-02-19 14:43:02,539 INFO L83 FinitePrefix]: Finished finitePrefix Result has 642130 conditions, 17025 events. 10509/17025 cut-off events. For 7554/7554 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 124285 event pairs, 26 based on Foata normal form. 0/12169 useless extension candidates. Maximal degree in co-relation 605418. Up to 16176 conditions per place. [2024-02-19 14:43:02,865 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 5073 selfloop transitions, 1373 changer transitions 333/6780 dead transitions. [2024-02-19 14:43:02,865 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 441 places, 6780 transitions, 518517 flow [2024-02-19 14:43:02,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-19 14:43:02,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-19 14:43:02,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 365 transitions. [2024-02-19 14:43:02,867 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4828042328042328 [2024-02-19 14:43:02,867 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 411 predicate places. [2024-02-19 14:43:02,867 INFO L507 AbstractCegarLoop]: Abstraction has has 441 places, 6780 transitions, 518517 flow [2024-02-19 14:43:02,867 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.125) internal successors, (98), 16 states have internal predecessors, (98), 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 14:43:02,867 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:43:02,868 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] [2024-02-19 14:43:02,881 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-19 14:43:03,079 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-02-19 14:43:03,079 INFO L432 AbstractCegarLoop]: === Iteration 38 === 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 14:43:03,079 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:43:03,079 INFO L85 PathProgramCache]: Analyzing trace with hash 1306120731, now seen corresponding path program 21 times [2024-02-19 14:43:03,079 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:43:03,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190211876] [2024-02-19 14:43:03,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:43:03,080 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:43:03,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:43:03,169 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 14:43:03,169 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:43:03,169 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190211876] [2024-02-19 14:43:03,170 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190211876] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:43:03,170 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:43:03,170 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:43:03,170 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488284771] [2024-02-19 14:43:03,170 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:43:03,171 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:43:03,171 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:43:03,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:43:03,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:43:03,176 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:43:03,176 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 441 places, 6780 transitions, 518517 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:43:03,177 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:43:03,177 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:43:03,177 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:43:52,784 INFO L124 PetriNetUnfolderBase]: 10532/17062 cut-off events. [2024-02-19 14:43:52,784 INFO L125 PetriNetUnfolderBase]: For 7312/7312 co-relation queries the response was YES. [2024-02-19 14:43:52,798 INFO L83 FinitePrefix]: Finished finitePrefix Result has 660455 conditions, 17062 events. 10532/17062 cut-off events. For 7312/7312 co-relation queries the response was YES. Maximal size of possible extension queue 1113. Compared 124710 event pairs, 26 based on Foata normal form. 0/12198 useless extension candidates. Maximal degree in co-relation 622789. Up to 16208 conditions per place. [2024-02-19 14:43:53,116 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6292 selfloop transitions, 174 changer transitions 334/6801 dead transitions. [2024-02-19 14:43:53,117 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 447 places, 6801 transitions, 533719 flow [2024-02-19 14:43:53,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:43:53,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:43:53,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 89 transitions. [2024-02-19 14:43:53,118 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4708994708994709 [2024-02-19 14:43:53,118 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 417 predicate places. [2024-02-19 14:43:53,118 INFO L507 AbstractCegarLoop]: Abstraction has has 447 places, 6801 transitions, 533719 flow [2024-02-19 14:43:53,118 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:43:53,118 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:43:53,118 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] [2024-02-19 14:43:53,119 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-19 14:43:53,119 INFO L432 AbstractCegarLoop]: === Iteration 39 === 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 14:43:53,119 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:43:53,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1373939561, now seen corresponding path program 22 times [2024-02-19 14:43:53,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:43:53,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068512519] [2024-02-19 14:43:53,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:43:53,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:43:53,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:43:53,189 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 14:43:53,189 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:43:53,190 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068512519] [2024-02-19 14:43:53,190 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068512519] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:43:53,190 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:43:53,190 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:43:53,190 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752212754] [2024-02-19 14:43:53,190 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:43:53,190 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:43:53,190 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:43:53,191 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:43:53,191 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:43:53,196 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:43:53,196 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 447 places, 6801 transitions, 533719 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:43:53,196 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:43:53,196 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:43:53,196 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:44:47,523 INFO L124 PetriNetUnfolderBase]: 10533/17065 cut-off events. [2024-02-19 14:44:47,523 INFO L125 PetriNetUnfolderBase]: For 7063/7063 co-relation queries the response was YES. [2024-02-19 14:44:47,538 INFO L83 FinitePrefix]: Finished finitePrefix Result has 677492 conditions, 17065 events. 10533/17065 cut-off events. For 7063/7063 co-relation queries the response was YES. Maximal size of possible extension queue 1116. Compared 124783 event pairs, 26 based on Foata normal form. 0/12201 useless extension candidates. Maximal degree in co-relation 638872. Up to 16210 conditions per place. [2024-02-19 14:44:48,016 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6296 selfloop transitions, 169 changer transitions 337/6803 dead transitions. [2024-02-19 14:44:48,016 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 453 places, 6803 transitions, 547479 flow [2024-02-19 14:44:48,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:44:48,024 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:44:48,024 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 86 transitions. [2024-02-19 14:44:48,024 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.455026455026455 [2024-02-19 14:44:48,025 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 423 predicate places. [2024-02-19 14:44:48,025 INFO L507 AbstractCegarLoop]: Abstraction has has 453 places, 6803 transitions, 547479 flow [2024-02-19 14:44:48,025 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:44:48,025 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:44:48,025 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] [2024-02-19 14:44:48,025 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38 [2024-02-19 14:44:48,026 INFO L432 AbstractCegarLoop]: === Iteration 40 === 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 14:44:48,026 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:44:48,026 INFO L85 PathProgramCache]: Analyzing trace with hash -840050029, now seen corresponding path program 23 times [2024-02-19 14:44:48,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:44:48,026 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2069908095] [2024-02-19 14:44:48,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:44:48,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:44:48,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:44:48,115 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 14:44:48,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:44:48,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2069908095] [2024-02-19 14:44:48,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2069908095] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:44:48,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:44:48,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:44:48,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543623101] [2024-02-19 14:44:48,116 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:44:48,116 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:44:48,116 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:44:48,117 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:44:48,117 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:44:48,122 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:44:48,122 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 453 places, 6803 transitions, 547479 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:44:48,123 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:44:48,124 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:44:48,124 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:45:47,798 INFO L124 PetriNetUnfolderBase]: 10534/17068 cut-off events. [2024-02-19 14:45:47,798 INFO L125 PetriNetUnfolderBase]: For 7302/7302 co-relation queries the response was YES. [2024-02-19 14:45:47,814 INFO L83 FinitePrefix]: Finished finitePrefix Result has 694535 conditions, 17068 events. 10534/17068 cut-off events. For 7302/7302 co-relation queries the response was YES. Maximal size of possible extension queue 1112. Compared 124817 event pairs, 26 based on Foata normal form. 0/12204 useless extension candidates. Maximal degree in co-relation 654961. Up to 16212 conditions per place. [2024-02-19 14:45:48,165 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6296 selfloop transitions, 168 changer transitions 340/6805 dead transitions. [2024-02-19 14:45:48,165 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 459 places, 6805 transitions, 561247 flow [2024-02-19 14:45:48,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:45:48,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:45:48,166 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-02-19 14:45:48,166 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-02-19 14:45:48,166 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 429 predicate places. [2024-02-19 14:45:48,167 INFO L507 AbstractCegarLoop]: Abstraction has has 459 places, 6805 transitions, 561247 flow [2024-02-19 14:45:48,167 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:45:48,167 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:45:48,167 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] [2024-02-19 14:45:48,167 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-19 14:45:48,167 INFO L432 AbstractCegarLoop]: === Iteration 41 === 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 14:45:48,167 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:45:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1191198017, now seen corresponding path program 24 times [2024-02-19 14:45:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:45:48,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114791040] [2024-02-19 14:45:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:45:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:45:48,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:45:48,244 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 14:45:48,245 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:45:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114791040] [2024-02-19 14:45:48,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114791040] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:45:48,245 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [979554869] [2024-02-19 14:45:48,245 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-19 14:45:48,246 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:45:48,246 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:45:48,257 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:45:48,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-19 14:45:48,358 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-19 14:45:48,358 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:45:48,359 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:45:48,359 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:45:48,437 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 14:45:48,438 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:45:48,531 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 14:45:48,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [979554869] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:45:48,531 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:45:48,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-19 14:45:48,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [58673224] [2024-02-19 14:45:48,531 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:45:48,532 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:45:48,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:45:48,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:45:48,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:45:48,539 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:45:48,540 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 459 places, 6805 transitions, 561247 flow. Second operand has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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 14:45:48,540 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:45:48,540 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:45:48,540 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:46:49,815 INFO L124 PetriNetUnfolderBase]: 10663/17266 cut-off events. [2024-02-19 14:46:49,815 INFO L125 PetriNetUnfolderBase]: For 7337/7337 co-relation queries the response was YES. [2024-02-19 14:46:49,829 INFO L83 FinitePrefix]: Finished finitePrefix Result has 719831 conditions, 17266 events. 10663/17266 cut-off events. For 7337/7337 co-relation queries the response was YES. Maximal size of possible extension queue 1127. Compared 126332 event pairs, 28 based on Foata normal form. 0/12380 useless extension candidates. Maximal degree in co-relation 679389. Up to 16411 conditions per place. [2024-02-19 14:46:50,190 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 5462 selfloop transitions, 1107 changer transitions 340/6910 dead transitions. [2024-02-19 14:46:50,190 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 480 places, 6910 transitions, 583723 flow [2024-02-19 14:46:50,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-19 14:46:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-19 14:46:50,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 273 transitions. [2024-02-19 14:46:50,191 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4595959595959596 [2024-02-19 14:46:50,192 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 450 predicate places. [2024-02-19 14:46:50,192 INFO L507 AbstractCegarLoop]: Abstraction has has 480 places, 6910 transitions, 583723 flow [2024-02-19 14:46:50,192 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.5) internal successors, (104), 16 states have internal predecessors, (104), 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 14:46:50,192 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:46:50,192 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] [2024-02-19 14:46:50,207 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-19 14:46:50,403 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:46:50,404 INFO L432 AbstractCegarLoop]: === Iteration 42 === 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 14:46:50,404 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:46:50,404 INFO L85 PathProgramCache]: Analyzing trace with hash 234375621, now seen corresponding path program 25 times [2024-02-19 14:46:50,405 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:46:50,405 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [448295460] [2024-02-19 14:46:50,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:46:50,405 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:46:50,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:46:50,473 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 14:46:50,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:46:50,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [448295460] [2024-02-19 14:46:50,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [448295460] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-19 14:46:50,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-19 14:46:50,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-19 14:46:50,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [893492782] [2024-02-19 14:46:50,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-19 14:46:50,475 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-19 14:46:50,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:46:50,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-19 14:46:50,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-19 14:46:50,479 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:46:50,479 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 480 places, 6910 transitions, 583723 flow. Second operand has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:46:50,479 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:46:50,479 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:46:50,479 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:47:53,390 INFO L124 PetriNetUnfolderBase]: 10631/17186 cut-off events. [2024-02-19 14:47:53,391 INFO L125 PetriNetUnfolderBase]: For 7531/7531 co-relation queries the response was YES. [2024-02-19 14:47:53,412 INFO L83 FinitePrefix]: Finished finitePrefix Result has 733669 conditions, 17186 events. 10631/17186 cut-off events. For 7531/7531 co-relation queries the response was YES. Maximal size of possible extension queue 1120. Compared 125387 event pairs, 26 based on Foata normal form. 0/12330 useless extension candidates. Maximal degree in co-relation 692627. Up to 16335 conditions per place. [2024-02-19 14:47:53,803 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6345 selfloop transitions, 174 changer transitions 340/6860 dead transitions. [2024-02-19 14:47:53,803 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 486 places, 6860 transitions, 593205 flow [2024-02-19 14:47:53,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-19 14:47:53,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-19 14:47:53,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-02-19 14:47:53,804 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-02-19 14:47:53,804 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 456 predicate places. [2024-02-19 14:47:53,804 INFO L507 AbstractCegarLoop]: Abstraction has has 486 places, 6860 transitions, 593205 flow [2024-02-19 14:47:53,804 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.857142857142857) internal successors, (48), 7 states have internal predecessors, (48), 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 14:47:53,805 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:47:53,805 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] [2024-02-19 14:47:53,805 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-02-19 14:47:53,805 INFO L432 AbstractCegarLoop]: === Iteration 43 === 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 14:47:53,805 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:47:53,805 INFO L85 PathProgramCache]: Analyzing trace with hash 697810073, now seen corresponding path program 5 times [2024-02-19 14:47:53,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:47:53,806 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [776844477] [2024-02-19 14:47:53,806 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:47:53,806 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:47:53,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:47:53,900 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 14:47:53,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:47:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [776844477] [2024-02-19 14:47:53,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [776844477] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:47:53,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883983089] [2024-02-19 14:47:53,900 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-19 14:47:53,901 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:47:53,901 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:47:53,902 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:47:53,903 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-19 14:47:54,005 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:47:54,006 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:47:54,007 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:47:54,007 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:47:54,068 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 14:47:54,068 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:47:54,162 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 14:47:54,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883983089] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:47:54,163 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:47:54,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-02-19 14:47:54,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [27392997] [2024-02-19 14:47:54,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:47:54,163 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-19 14:47:54,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:47:54,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-19 14:47:54,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-02-19 14:47:54,172 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:47:54,173 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 486 places, 6860 transitions, 593205 flow. Second operand has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 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 14:47:54,173 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:47:54,173 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:47:54,173 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:49:13,781 INFO L124 PetriNetUnfolderBase]: 12446/19831 cut-off events. [2024-02-19 14:49:13,781 INFO L125 PetriNetUnfolderBase]: For 8196/8196 co-relation queries the response was YES. [2024-02-19 14:49:13,802 INFO L83 FinitePrefix]: Finished finitePrefix Result has 866525 conditions, 19831 events. 12446/19831 cut-off events. For 8196/8196 co-relation queries the response was YES. Maximal size of possible extension queue 1283. Compared 144552 event pairs, 40 based on Foata normal form. 0/14021 useless extension candidates. Maximal degree in co-relation 820259. Up to 18730 conditions per place. [2024-02-19 14:49:14,251 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6410 selfloop transitions, 986 changer transitions 340/7737 dead transitions. [2024-02-19 14:49:14,251 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 510 places, 7737 transitions, 684385 flow [2024-02-19 14:49:14,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-19 14:49:14,252 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-19 14:49:14,252 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 304 transitions. [2024-02-19 14:49:14,253 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45037037037037037 [2024-02-19 14:49:14,253 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 480 predicate places. [2024-02-19 14:49:14,253 INFO L507 AbstractCegarLoop]: Abstraction has has 510 places, 7737 transitions, 684385 flow [2024-02-19 14:49:14,253 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.117647058823529) internal successors, (104), 17 states have internal predecessors, (104), 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 14:49:14,253 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:49:14,253 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] [2024-02-19 14:49:14,264 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Ended with exit code 0 [2024-02-19 14:49:14,457 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:49:14,457 INFO L432 AbstractCegarLoop]: === Iteration 44 === 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 14:49:14,458 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:49:14,458 INFO L85 PathProgramCache]: Analyzing trace with hash -1324912806, now seen corresponding path program 13 times [2024-02-19 14:49:14,458 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:49:14,458 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [534620785] [2024-02-19 14:49:14,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:49:14,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:49:14,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:49:14,642 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 14:49:14,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:49:14,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [534620785] [2024-02-19 14:49:14,643 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [534620785] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:49:14,643 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1244068653] [2024-02-19 14:49:14,643 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-19 14:49:14,643 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:49:14,643 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:49:14,644 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:49:14,644 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-19 14:49:14,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:49:14,731 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-19 14:49:14,731 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:49:14,792 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 14:49:14,793 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:49:14,901 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 14:49:14,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1244068653] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:49:14,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:49:14,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-02-19 14:49:14,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2106938337] [2024-02-19 14:49:14,902 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:49:14,902 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-19 14:49:14,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:49:14,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-19 14:49:14,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2024-02-19 14:49:14,933 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:49:14,934 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 510 places, 7737 transitions, 684385 flow. Second operand has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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 14:49:14,934 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:49:14,934 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:49:14,934 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-19 14:50:44,416 INFO L124 PetriNetUnfolderBase]: 12594/20028 cut-off events. [2024-02-19 14:50:44,416 INFO L125 PetriNetUnfolderBase]: For 7948/7948 co-relation queries the response was YES. [2024-02-19 14:50:44,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 895205 conditions, 20028 events. 12594/20028 cut-off events. For 7948/7948 co-relation queries the response was YES. Maximal size of possible extension queue 1292. Compared 145896 event pairs, 50 based on Foata normal form. 0/14174 useless extension candidates. Maximal degree in co-relation 848175. Up to 18893 conditions per place. [2024-02-19 14:50:44,957 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6679 selfloop transitions, 810 changer transitions 340/7830 dead transitions. [2024-02-19 14:50:44,957 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 529 places, 7830 transitions, 708248 flow [2024-02-19 14:50:44,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2024-02-19 14:50:44,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2024-02-19 14:50:44,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 240 transitions. [2024-02-19 14:50:44,958 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-19 14:50:44,958 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 499 predicate places. [2024-02-19 14:50:44,959 INFO L507 AbstractCegarLoop]: Abstraction has has 529 places, 7830 transitions, 708248 flow [2024-02-19 14:50:44,959 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 6.4375) internal successors, (103), 16 states have internal predecessors, (103), 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 14:50:44,959 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-19 14:50:44,959 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] [2024-02-19 14:50:44,973 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-19 14:50:45,168 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:50:45,169 INFO L432 AbstractCegarLoop]: === Iteration 45 === 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 14:50:45,169 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-19 14:50:45,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1012689695, now seen corresponding path program 26 times [2024-02-19 14:50:45,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-19 14:50:45,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624256618] [2024-02-19 14:50:45,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-19 14:50:45,170 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-19 14:50:45,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-19 14:50:45,389 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 14:50:45,390 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-19 14:50:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624256618] [2024-02-19 14:50:45,390 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624256618] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-19 14:50:45,390 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [453168405] [2024-02-19 14:50:45,390 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-19 14:50:45,390 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-19 14:50:45,391 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-19 14:50:45,391 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-02-19 14:50:45,395 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-19 14:50:45,494 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-19 14:50:45,494 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-19 14:50:45,496 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-19 14:50:45,496 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-19 14:50:45,567 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 14:50:45,568 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-19 14:50:45,635 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 14:50:45,636 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [453168405] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-19 14:50:45,636 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-19 14:50:45,636 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 11 [2024-02-19 14:50:45,636 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304500949] [2024-02-19 14:50:45,636 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-19 14:50:45,636 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-02-19 14:50:45,636 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-19 14:50:45,637 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-02-19 14:50:45,637 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-02-19 14:50:45,643 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-19 14:50:45,643 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 529 places, 7830 transitions, 708248 flow. Second operand has 11 states, 11 states have (on average 6.636363636363637) internal successors, (73), 11 states have internal predecessors, (73), 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 14:50:45,643 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-19 14:50:45,644 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-19 14:50:45,644 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15