./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 448d4d75 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-448d4d7-m [2024-02-20 11:55:37,240 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-02-20 11:55:37,326 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-02-20 11:55:37,330 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-02-20 11:55:37,330 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-02-20 11:55:37,366 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-02-20 11:55:37,367 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-02-20 11:55:37,368 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-02-20 11:55:37,368 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-02-20 11:55:37,370 INFO L153 SettingsManager]: * Use memory slicer=true [2024-02-20 11:55:37,370 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-02-20 11:55:37,371 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-02-20 11:55:37,371 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-02-20 11:55:37,371 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-02-20 11:55:37,372 INFO L153 SettingsManager]: * Use SBE=true [2024-02-20 11:55:37,372 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-02-20 11:55:37,372 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-02-20 11:55:37,373 INFO L153 SettingsManager]: * sizeof long=4 [2024-02-20 11:55:37,373 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-02-20 11:55:37,373 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-02-20 11:55:37,373 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-02-20 11:55:37,374 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-02-20 11:55:37,374 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-02-20 11:55:37,374 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-02-20 11:55:37,375 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-02-20 11:55:37,375 INFO L153 SettingsManager]: * sizeof long double=12 [2024-02-20 11:55:37,375 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-02-20 11:55:37,375 INFO L153 SettingsManager]: * Use constant arrays=true [2024-02-20 11:55:37,376 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-02-20 11:55:37,377 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-02-20 11:55:37,378 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-02-20 11:55:37,378 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-02-20 11:55:37,378 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:55:37,378 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-02-20 11:55:37,378 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-02-20 11:55:37,379 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-02-20 11:55:37,379 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-02-20 11:55:37,379 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-02-20 11:55:37,379 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-02-20 11:55:37,379 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-02-20 11:55:37,380 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-02-20 11:55:37,380 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-02-20 11:55:37,380 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-02-20 11:55:37,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c22a326532494b0b5126a81d8882f3e958ed0a5a46e6da0f77df1a4da18ba846 Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Positions where we compute the Hoare Annotation -> All [2024-02-20 11:55:37,634 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-02-20 11:55:37,655 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-02-20 11:55:37,657 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-02-20 11:55:37,658 INFO L270 PluginConnector]: Initializing CDTParser... [2024-02-20 11:55:37,659 INFO L274 PluginConnector]: CDTParser initialized [2024-02-20 11:55:37,660 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-02-20 11:55:38,721 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-02-20 11:55:38,932 INFO L384 CDTParser]: Found 1 translation units. [2024-02-20 11:55:38,933 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/mult-dist.wvr.c [2024-02-20 11:55:38,940 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c161119/8144424d65064ca8bb4203d7fa1e8fbe/FLAG75d044836 [2024-02-20 11:55:38,952 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8c161119/8144424d65064ca8bb4203d7fa1e8fbe [2024-02-20 11:55:38,955 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-02-20 11:55:38,956 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-02-20 11:55:38,957 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-02-20 11:55:38,957 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-02-20 11:55:38,962 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-02-20 11:55:38,963 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:55:38" (1/1) ... [2024-02-20 11:55:38,964 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b041680 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:38, skipping insertion in model container [2024-02-20 11:55:38,964 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.02 11:55:38" (1/1) ... [2024-02-20 11:55:38,984 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-02-20 11:55:39,129 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] [2024-02-20 11:55:39,133 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:55:39,141 INFO L202 MainTranslator]: Completed pre-run [2024-02-20 11:55:39,159 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] [2024-02-20 11:55:39,160 INFO L207 PostProcessor]: Analyzing one entry point: main [2024-02-20 11:55:39,174 INFO L206 MainTranslator]: Completed translation [2024-02-20 11:55:39,174 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39 WrapperNode [2024-02-20 11:55:39,175 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-02-20 11:55:39,176 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-02-20 11:55:39,176 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-02-20 11:55:39,176 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-02-20 11:55:39,182 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,189 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,209 INFO L138 Inliner]: procedures = 22, calls = 25, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 72 [2024-02-20 11:55:39,209 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-02-20 11:55:39,210 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-02-20 11:55:39,210 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-02-20 11:55:39,210 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-02-20 11:55:39,219 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,219 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,221 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,241 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]. [2024-02-20 11:55:39,241 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,241 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,246 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,254 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,256 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,257 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,259 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-02-20 11:55:39,260 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-02-20 11:55:39,260 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-02-20 11:55:39,261 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-02-20 11:55:39,261 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (1/1) ... [2024-02-20 11:55:39,275 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-02-20 11:55:39,285 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:39,300 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) [2024-02-20 11:55:39,316 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 [2024-02-20 11:55:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-02-20 11:55:39,351 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-02-20 11:55:39,351 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-02-20 11:55:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-02-20 11:55:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-02-20 11:55:39,352 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-02-20 11:55:39,352 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-02-20 11:55:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-02-20 11:55:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-02-20 11:55:39,354 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-02-20 11:55:39,355 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-02-20 11:55:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-02-20 11:55:39,356 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-02-20 11:55:39,356 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-02-20 11:55:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-02-20 11:55:39,357 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-02-20 11:55:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-02-20 11:55:39,358 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-02-20 11:55:39,360 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-02-20 11:55:39,451 INFO L244 CfgBuilder]: Building ICFG [2024-02-20 11:55:39,452 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-02-20 11:55:39,605 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-02-20 11:55:39,605 INFO L293 CfgBuilder]: Performing block encoding [2024-02-20 11:55:39,757 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-02-20 11:55:39,757 INFO L320 CfgBuilder]: Removed 3 assume(true) statements. [2024-02-20 11:55:39,758 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:55:39 BoogieIcfgContainer [2024-02-20 11:55:39,758 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-02-20 11:55:39,760 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-02-20 11:55:39,760 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-02-20 11:55:39,763 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-02-20 11:55:39,763 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.02 11:55:38" (1/3) ... [2024-02-20 11:55:39,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c2c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:55:39, skipping insertion in model container [2024-02-20 11:55:39,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.02 11:55:39" (2/3) ... [2024-02-20 11:55:39,764 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@136c2c66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.02 11:55:39, skipping insertion in model container [2024-02-20 11:55:39,764 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.02 11:55:39" (3/3) ... [2024-02-20 11:55:39,765 INFO L112 eAbstractionObserver]: Analyzing ICFG mult-dist.wvr.c [2024-02-20 11:55:39,783 INFO L221 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-02-20 11:55:39,784 INFO L180 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-02-20 11:55:39,784 INFO L635 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-02-20 11:55:39,837 INFO L144 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-02-20 11:55:39,870 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 27 transitions, 75 flow [2024-02-20 11:55:39,925 INFO L124 PetriNetUnfolderBase]: 3/24 cut-off events. [2024-02-20 11:55:39,925 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:55:39,928 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. [2024-02-20 11:55:39,928 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 27 transitions, 75 flow [2024-02-20 11:55:39,931 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 30 places, 23 transitions, 64 flow [2024-02-20 11:55:39,948 INFO L368 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-02-20 11:55:39,956 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;@1be892fd, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-02-20 11:55:39,958 INFO L370 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-02-20 11:55:39,967 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-02-20 11:55:39,970 INFO L124 PetriNetUnfolderBase]: 3/22 cut-off events. [2024-02-20 11:55:39,970 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-02-20 11:55:39,971 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:39,971 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] [2024-02-20 11:55:39,972 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)] === [2024-02-20 11:55:39,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:39,977 INFO L85 PathProgramCache]: Analyzing trace with hash -1760804781, now seen corresponding path program 1 times [2024-02-20 11:55:39,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:39,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148040500] [2024-02-20 11:55:39,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:39,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:40,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:40,587 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:40,587 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:40,588 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148040500] [2024-02-20 11:55:40,588 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148040500] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:40,588 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:40,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-02-20 11:55:40,590 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758314016] [2024-02-20 11:55:40,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:40,598 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-02-20 11:55:40,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:40,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-02-20 11:55:40,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-02-20 11:55:40,641 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 27 [2024-02-20 11:55:40,645 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) [2024-02-20 11:55:40,645 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:40,645 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 27 [2024-02-20 11:55:40,646 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:40,827 INFO L124 PetriNetUnfolderBase]: 359/507 cut-off events. [2024-02-20 11:55:40,828 INFO L125 PetriNetUnfolderBase]: For 42/42 co-relation queries the response was YES. [2024-02-20 11:55:40,831 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. [2024-02-20 11:55:40,835 INFO L140 encePairwiseOnDemand]: 22/27 looper letters, 30 selfloop transitions, 4 changer transitions 1/39 dead transitions. [2024-02-20 11:55:40,836 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 39 transitions, 181 flow [2024-02-20 11:55:40,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-02-20 11:55:40,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-02-20 11:55:40,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 57 transitions. [2024-02-20 11:55:40,846 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.7037037037037037 [2024-02-20 11:55:40,851 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 2 predicate places. [2024-02-20 11:55:40,851 INFO L507 AbstractCegarLoop]: Abstraction has has 32 places, 39 transitions, 181 flow [2024-02-20 11:55:40,851 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) [2024-02-20 11:55:40,851 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:40,852 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] [2024-02-20 11:55:40,852 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-02-20 11:55:40,852 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)] === [2024-02-20 11:55:40,854 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:40,854 INFO L85 PathProgramCache]: Analyzing trace with hash 200582291, now seen corresponding path program 1 times [2024-02-20 11:55:40,854 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:40,858 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1911501006] [2024-02-20 11:55:40,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:40,858 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:40,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:41,166 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:41,167 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:41,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1911501006] [2024-02-20 11:55:41,167 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1911501006] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:41,168 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:41,168 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:55:41,168 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455895735] [2024-02-20 11:55:41,168 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:41,169 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:55:41,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:41,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:55:41,172 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:55:41,182 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:41,183 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) [2024-02-20 11:55:41,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:41,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:41,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:41,531 INFO L124 PetriNetUnfolderBase]: 597/903 cut-off events. [2024-02-20 11:55:41,531 INFO L125 PetriNetUnfolderBase]: For 254/254 co-relation queries the response was YES. [2024-02-20 11:55:41,534 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. [2024-02-20 11:55:41,541 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 100 selfloop transitions, 9 changer transitions 12/122 dead transitions. [2024-02-20 11:55:41,541 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 38 places, 122 transitions, 803 flow [2024-02-20 11:55:41,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:55:41,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:55:41,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 101 transitions. [2024-02-20 11:55:41,544 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5343915343915344 [2024-02-20 11:55:41,545 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 8 predicate places. [2024-02-20 11:55:41,545 INFO L507 AbstractCegarLoop]: Abstraction has has 38 places, 122 transitions, 803 flow [2024-02-20 11:55:41,545 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) [2024-02-20 11:55:41,545 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:41,546 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] [2024-02-20 11:55:41,546 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-02-20 11:55:41,546 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)] === [2024-02-20 11:55:41,547 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:41,547 INFO L85 PathProgramCache]: Analyzing trace with hash -692614235, now seen corresponding path program 2 times [2024-02-20 11:55:41,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:41,547 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27222970] [2024-02-20 11:55:41,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:41,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:41,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:41,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:41,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:41,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27222970] [2024-02-20 11:55:41,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [27222970] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:41,803 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1465658993] [2024-02-20 11:55:41,804 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:41,804 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:41,804 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:41,806 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) [2024-02-20 11:55:41,810 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-02-20 11:55:41,905 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:41,905 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:41,908 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:41,912 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:42,037 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:42,037 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:42,361 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:42,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1465658993] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:42,362 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:42,362 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-02-20 11:55:42,362 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1644464681] [2024-02-20 11:55:42,363 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:42,363 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:55:42,365 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:42,366 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:55:42,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=155, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:42,369 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:42,370 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) [2024-02-20 11:55:42,370 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:42,370 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:42,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:43,289 INFO L124 PetriNetUnfolderBase]: 1204/1791 cut-off events. [2024-02-20 11:55:43,290 INFO L125 PetriNetUnfolderBase]: For 477/477 co-relation queries the response was YES. [2024-02-20 11:55:43,292 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. [2024-02-20 11:55:43,303 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 319 selfloop transitions, 146 changer transitions 22/488 dead transitions. [2024-02-20 11:55:43,303 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 488 transitions, 4060 flow [2024-02-20 11:55:43,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 11:55:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 11:55:43,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 282 transitions. [2024-02-20 11:55:43,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-02-20 11:55:43,308 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 28 predicate places. [2024-02-20 11:55:43,309 INFO L507 AbstractCegarLoop]: Abstraction has has 58 places, 488 transitions, 4060 flow [2024-02-20 11:55:43,309 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) [2024-02-20 11:55:43,309 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:43,309 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] [2024-02-20 11:55:43,330 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:43,530 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 [2024-02-20 11:55:43,531 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)] === [2024-02-20 11:55:43,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1895815853, now seen corresponding path program 3 times [2024-02-20 11:55:43,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:43,532 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [349590307] [2024-02-20 11:55:43,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:43,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:43,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:43,692 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:43,693 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:43,693 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [349590307] [2024-02-20 11:55:43,693 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [349590307] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:43,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [655720893] [2024-02-20 11:55:43,694 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:43,694 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:43,694 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:43,695 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) [2024-02-20 11:55:43,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-02-20 11:55:43,789 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:55:43,789 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:43,790 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:43,792 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:43,915 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:43,916 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:44,302 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:44,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [655720893] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:44,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:44,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-02-20 11:55:44,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888678652] [2024-02-20 11:55:44,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:44,304 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:44,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:44,306 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:44,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:55:44,306 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:44,307 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) [2024-02-20 11:55:44,307 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:44,307 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:44,307 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:44,831 INFO L124 PetriNetUnfolderBase]: 1734/2623 cut-off events. [2024-02-20 11:55:44,831 INFO L125 PetriNetUnfolderBase]: For 789/789 co-relation queries the response was YES. [2024-02-20 11:55:44,834 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. [2024-02-20 11:55:44,853 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 596 selfloop transitions, 83 changer transitions 22/714 dead transitions. [2024-02-20 11:55:44,854 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 65 places, 714 transitions, 7378 flow [2024-02-20 11:55:44,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:55:44,855 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:55:44,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-02-20 11:55:44,857 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6527777777777778 [2024-02-20 11:55:44,859 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 35 predicate places. [2024-02-20 11:55:44,859 INFO L507 AbstractCegarLoop]: Abstraction has has 65 places, 714 transitions, 7378 flow [2024-02-20 11:55:44,859 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) [2024-02-20 11:55:44,859 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:44,859 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] [2024-02-20 11:55:44,879 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:45,075 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 [2024-02-20 11:55:45,075 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)] === [2024-02-20 11:55:45,075 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:45,076 INFO L85 PathProgramCache]: Analyzing trace with hash -512912937, now seen corresponding path program 4 times [2024-02-20 11:55:45,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:45,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1435204624] [2024-02-20 11:55:45,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:45,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:45,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:45,281 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:45,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:45,281 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1435204624] [2024-02-20 11:55:45,282 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1435204624] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:45,282 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [651697799] [2024-02-20 11:55:45,282 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:45,282 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:45,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:45,283 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) [2024-02-20 11:55:45,286 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-02-20 11:55:45,366 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:45,366 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:45,367 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:55:45,370 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:45,489 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:45,490 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:45,611 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:45,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [651697799] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:45,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:45,612 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-20 11:55:45,612 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [518713422] [2024-02-20 11:55:45,612 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:45,613 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:45,613 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:45,613 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:45,614 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=156, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:45,619 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:45,620 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) [2024-02-20 11:55:45,620 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:45,620 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:45,620 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:46,125 INFO L124 PetriNetUnfolderBase]: 1790/2703 cut-off events. [2024-02-20 11:55:46,126 INFO L125 PetriNetUnfolderBase]: For 1003/1003 co-relation queries the response was YES. [2024-02-20 11:55:46,130 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. [2024-02-20 11:55:46,154 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 654 selfloop transitions, 55 changer transitions 22/744 dead transitions. [2024-02-20 11:55:46,154 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 70 places, 744 transitions, 9156 flow [2024-02-20 11:55:46,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:55:46,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:55:46,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-02-20 11:55:46,156 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-02-20 11:55:46,158 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 40 predicate places. [2024-02-20 11:55:46,158 INFO L507 AbstractCegarLoop]: Abstraction has has 70 places, 744 transitions, 9156 flow [2024-02-20 11:55:46,158 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) [2024-02-20 11:55:46,158 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:46,159 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] [2024-02-20 11:55:46,180 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:46,379 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 [2024-02-20 11:55:46,379 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)] === [2024-02-20 11:55:46,380 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:46,380 INFO L85 PathProgramCache]: Analyzing trace with hash 1860833943, now seen corresponding path program 5 times [2024-02-20 11:55:46,380 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:46,380 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2105564051] [2024-02-20 11:55:46,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:46,380 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:46,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:46,534 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:46,535 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2105564051] [2024-02-20 11:55:46,535 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2105564051] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:46,535 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1241013359] [2024-02-20 11:55:46,535 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:55:46,536 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:46,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:46,540 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) [2024-02-20 11:55:46,563 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-02-20 11:55:46,635 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:46,635 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:46,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:46,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:46,720 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:46,720 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:46,873 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:46,873 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1241013359] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:46,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:46,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-20 11:55:46,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530211901] [2024-02-20 11:55:46,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:46,874 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:46,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:46,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:46,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:46,877 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:46,878 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) [2024-02-20 11:55:46,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:46,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:46,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:47,360 INFO L124 PetriNetUnfolderBase]: 1814/2745 cut-off events. [2024-02-20 11:55:47,360 INFO L125 PetriNetUnfolderBase]: For 1278/1278 co-relation queries the response was YES. [2024-02-20 11:55:47,366 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. [2024-02-20 11:55:47,396 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 672 selfloop transitions, 57 changer transitions 22/764 dead transitions. [2024-02-20 11:55:47,396 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 764 transitions, 10905 flow [2024-02-20 11:55:47,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:55:47,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:55:47,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-02-20 11:55:47,397 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-02-20 11:55:47,398 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 45 predicate places. [2024-02-20 11:55:47,398 INFO L507 AbstractCegarLoop]: Abstraction has has 75 places, 764 transitions, 10905 flow [2024-02-20 11:55:47,399 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) [2024-02-20 11:55:47,399 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:47,399 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] [2024-02-20 11:55:47,419 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:47,619 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 [2024-02-20 11:55:47,619 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)] === [2024-02-20 11:55:47,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:47,620 INFO L85 PathProgramCache]: Analyzing trace with hash -200025859, now seen corresponding path program 6 times [2024-02-20 11:55:47,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:47,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [819048245] [2024-02-20 11:55:47,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:47,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:47,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:47,799 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:47,800 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [819048245] [2024-02-20 11:55:47,800 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [819048245] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:47,800 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1005321982] [2024-02-20 11:55:47,801 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:55:47,801 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:47,801 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:47,804 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) [2024-02-20 11:55:47,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-02-20 11:55:47,897 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:55:47,898 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:47,899 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:47,900 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:47,991 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:47,991 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:48,125 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:48,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1005321982] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:48,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:48,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 15 [2024-02-20 11:55:48,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603934265] [2024-02-20 11:55:48,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:48,127 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:48,127 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:48,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=158, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:48,131 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:48,131 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) [2024-02-20 11:55:48,131 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:48,132 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:48,132 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:48,669 INFO L124 PetriNetUnfolderBase]: 2008/3013 cut-off events. [2024-02-20 11:55:48,670 INFO L125 PetriNetUnfolderBase]: For 1718/1718 co-relation queries the response was YES. [2024-02-20 11:55:48,673 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. [2024-02-20 11:55:48,697 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 768 selfloop transitions, 73 changer transitions 22/876 dead transitions. [2024-02-20 11:55:48,697 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 876 transitions, 14235 flow [2024-02-20 11:55:48,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:55:48,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:55:48,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-02-20 11:55:48,699 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6049382716049383 [2024-02-20 11:55:48,700 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 50 predicate places. [2024-02-20 11:55:48,700 INFO L507 AbstractCegarLoop]: Abstraction has has 80 places, 876 transitions, 14235 flow [2024-02-20 11:55:48,700 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) [2024-02-20 11:55:48,700 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:48,700 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] [2024-02-20 11:55:48,715 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-02-20 11:55:48,908 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 [2024-02-20 11:55:48,909 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)] === [2024-02-20 11:55:48,909 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:48,910 INFO L85 PathProgramCache]: Analyzing trace with hash 1721194557, now seen corresponding path program 7 times [2024-02-20 11:55:48,910 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:48,910 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152072642] [2024-02-20 11:55:48,910 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:48,910 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:48,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:49,058 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:49,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152072642] [2024-02-20 11:55:49,059 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152072642] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:49,059 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [646707976] [2024-02-20 11:55:49,060 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:55:49,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:49,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:49,061 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) [2024-02-20 11:55:49,081 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-02-20 11:55:49,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:49,161 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 11 conjunts are in the unsatisfiable core [2024-02-20 11:55:49,162 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:49,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:49,213 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:49,297 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:49,297 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [646707976] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:49,298 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:49,298 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 7] total 11 [2024-02-20 11:55:49,298 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218031398] [2024-02-20 11:55:49,298 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:49,298 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:49,299 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:49,299 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:49,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-02-20 11:55:49,305 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:49,306 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) [2024-02-20 11:55:49,306 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:49,306 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:49,306 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:49,944 INFO L124 PetriNetUnfolderBase]: 1994/2999 cut-off events. [2024-02-20 11:55:49,944 INFO L125 PetriNetUnfolderBase]: For 2060/2060 co-relation queries the response was YES. [2024-02-20 11:55:49,948 INFO L83 FinitePrefix]: Finished finitePrefix Result has 26513 conditions, 2999 events. 1994/2999 cut-off events. For 2060/2060 co-relation queries the response was YES. Maximal size of possible extension queue 175. Compared 14193 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. [2024-02-20 11:55:49,975 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 772 selfloop transitions, 67 changer transitions 22/874 dead transitions. [2024-02-20 11:55:49,976 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 874 transitions, 15923 flow [2024-02-20 11:55:49,976 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-02-20 11:55:49,976 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-02-20 11:55:49,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 100 transitions. [2024-02-20 11:55:49,977 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6172839506172839 [2024-02-20 11:55:49,978 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 55 predicate places. [2024-02-20 11:55:49,978 INFO L507 AbstractCegarLoop]: Abstraction has has 85 places, 874 transitions, 15923 flow [2024-02-20 11:55:49,978 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) [2024-02-20 11:55:49,978 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:49,978 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] [2024-02-20 11:55:49,995 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:50,195 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 [2024-02-20 11:55:50,196 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)] === [2024-02-20 11:55:50,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:50,196 INFO L85 PathProgramCache]: Analyzing trace with hash -218459885, now seen corresponding path program 8 times [2024-02-20 11:55:50,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:50,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [821667756] [2024-02-20 11:55:50,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:50,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:50,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:50,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,362 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [821667756] [2024-02-20 11:55:50,362 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [821667756] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:50,362 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1169139022] [2024-02-20 11:55:50,363 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:50,363 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:50,363 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:50,364 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) [2024-02-20 11:55:50,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-02-20 11:55:50,454 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:50,454 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:50,456 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:50,457 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:50,549 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,549 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:50,623 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:50,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1169139022] provided 1 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:50,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-02-20 11:55:50,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 8] total 14 [2024-02-20 11:55:50,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410311447] [2024-02-20 11:55:50,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:50,626 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-02-20 11:55:50,626 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:50,627 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-02-20 11:55:50,627 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:55:50,628 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 27 [2024-02-20 11:55:50,629 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) [2024-02-20 11:55:50,629 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:50,629 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 27 [2024-02-20 11:55:50,629 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:51,366 INFO L124 PetriNetUnfolderBase]: 2078/3155 cut-off events. [2024-02-20 11:55:51,367 INFO L125 PetriNetUnfolderBase]: For 2719/2719 co-relation queries the response was YES. [2024-02-20 11:55:51,370 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30972 conditions, 3155 events. 2078/3155 cut-off events. For 2719/2719 co-relation queries the response was YES. Maximal size of possible extension queue 184. Compared 15364 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. [2024-02-20 11:55:51,398 INFO L140 encePairwiseOnDemand]: 20/27 looper letters, 833 selfloop transitions, 106 changer transitions 22/974 dead transitions. [2024-02-20 11:55:51,398 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 974 transitions, 19680 flow [2024-02-20 11:55:51,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-02-20 11:55:51,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-02-20 11:55:51,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 143 transitions. [2024-02-20 11:55:51,400 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.6620370370370371 [2024-02-20 11:55:51,401 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 62 predicate places. [2024-02-20 11:55:51,401 INFO L507 AbstractCegarLoop]: Abstraction has has 92 places, 974 transitions, 19680 flow [2024-02-20 11:55:51,401 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) [2024-02-20 11:55:51,401 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:51,401 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] [2024-02-20 11:55:51,421 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:51,620 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 [2024-02-20 11:55:51,621 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)] === [2024-02-20 11:55:51,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:51,621 INFO L85 PathProgramCache]: Analyzing trace with hash 1384894328, now seen corresponding path program 1 times [2024-02-20 11:55:51,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:51,621 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [546721399] [2024-02-20 11:55:51,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:51,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:51,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:51,791 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:51,791 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:51,792 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [546721399] [2024-02-20 11:55:51,792 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [546721399] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:51,792 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:51,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:55:51,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998302066] [2024-02-20 11:55:51,792 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:51,793 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:55:51,793 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:51,794 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:55:51,794 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:55:51,794 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:51,795 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) [2024-02-20 11:55:51,795 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:51,795 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:51,795 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:52,535 INFO L124 PetriNetUnfolderBase]: 2161/3307 cut-off events. [2024-02-20 11:55:52,535 INFO L125 PetriNetUnfolderBase]: For 2764/2764 co-relation queries the response was YES. [2024-02-20 11:55:52,541 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35786 conditions, 3307 events. 2161/3307 cut-off events. For 2764/2764 co-relation queries the response was YES. Maximal size of possible extension queue 197. Compared 16497 event pairs, 14 based on Foata normal form. 0/2305 useless extension candidates. Maximal degree in co-relation 33136. Up to 2640 conditions per place. [2024-02-20 11:55:52,568 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 951 selfloop transitions, 62 changer transitions 51/1065 dead transitions. [2024-02-20 11:55:52,568 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 98 places, 1065 transitions, 23683 flow [2024-02-20 11:55:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:55:52,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:55:52,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 105 transitions. [2024-02-20 11:55:52,570 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5555555555555556 [2024-02-20 11:55:52,570 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 68 predicate places. [2024-02-20 11:55:52,571 INFO L507 AbstractCegarLoop]: Abstraction has has 98 places, 1065 transitions, 23683 flow [2024-02-20 11:55:52,571 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) [2024-02-20 11:55:52,571 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:52,571 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] [2024-02-20 11:55:52,571 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-02-20 11:55:52,572 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)] === [2024-02-20 11:55:52,572 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:52,572 INFO L85 PathProgramCache]: Analyzing trace with hash 474632315, now seen corresponding path program 1 times [2024-02-20 11:55:52,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:52,572 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2084040979] [2024-02-20 11:55:52,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:52,573 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:52,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:52,738 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:52,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:52,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2084040979] [2024-02-20 11:55:52,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2084040979] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:55:52,739 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:55:52,739 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:55:52,739 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1863952939] [2024-02-20 11:55:52,740 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:55:52,741 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:55:52,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:52,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:55:52,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:55:52,742 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:52,742 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) [2024-02-20 11:55:52,742 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:52,742 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:52,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:53,585 INFO L124 PetriNetUnfolderBase]: 2279/3527 cut-off events. [2024-02-20 11:55:53,585 INFO L125 PetriNetUnfolderBase]: For 2860/2860 co-relation queries the response was YES. [2024-02-20 11:55:53,588 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41730 conditions, 3527 events. 2279/3527 cut-off events. For 2860/2860 co-relation queries the response was YES. Maximal size of possible extension queue 214. Compared 18245 event pairs, 12 based on Foata normal form. 0/2479 useless extension candidates. Maximal degree in co-relation 38676. Up to 2722 conditions per place. [2024-02-20 11:55:53,617 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 985 selfloop transitions, 63 changer transitions 99/1148 dead transitions. [2024-02-20 11:55:53,617 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 1148 transitions, 27874 flow [2024-02-20 11:55:53,618 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:55:53,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:55:53,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 109 transitions. [2024-02-20 11:55:53,619 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5767195767195767 [2024-02-20 11:55:53,620 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 74 predicate places. [2024-02-20 11:55:53,620 INFO L507 AbstractCegarLoop]: Abstraction has has 104 places, 1148 transitions, 27874 flow [2024-02-20 11:55:53,620 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) [2024-02-20 11:55:53,620 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:53,620 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] [2024-02-20 11:55:53,621 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-02-20 11:55:53,621 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)] === [2024-02-20 11:55:53,621 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:53,621 INFO L85 PathProgramCache]: Analyzing trace with hash -286032140, now seen corresponding path program 2 times [2024-02-20 11:55:53,621 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:53,622 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [302468098] [2024-02-20 11:55:53,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:53,622 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:53,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:53,787 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:53,788 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:53,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [302468098] [2024-02-20 11:55:53,788 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [302468098] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:53,788 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [21573079] [2024-02-20 11:55:53,788 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:55:53,789 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:53,789 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:53,790 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) [2024-02-20 11:55:53,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-02-20 11:55:53,899 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:55:53,899 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:53,900 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:55:53,901 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:53,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:53,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:54,311 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:54,311 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [21573079] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:54,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:54,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-20 11:55:54,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162996525] [2024-02-20 11:55:54,312 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:54,312 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:55:54,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:54,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:55:54,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=153, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:54,315 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:54,315 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) [2024-02-20 11:55:54,315 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:54,315 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:54,315 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:56,076 INFO L124 PetriNetUnfolderBase]: 3842/5932 cut-off events. [2024-02-20 11:55:56,077 INFO L125 PetriNetUnfolderBase]: For 4036/4036 co-relation queries the response was YES. [2024-02-20 11:55:56,082 INFO L83 FinitePrefix]: Finished finitePrefix Result has 76412 conditions, 5932 events. 3842/5932 cut-off events. For 4036/4036 co-relation queries the response was YES. Maximal size of possible extension queue 362. Compared 33625 event pairs, 26 based on Foata normal form. 0/4142 useless extension candidates. Maximal degree in co-relation 71030. Up to 4971 conditions per place. [2024-02-20 11:55:56,143 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1531 selfloop transitions, 338 changer transitions 99/1969 dead transitions. [2024-02-20 11:55:56,143 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 125 places, 1969 transitions, 51860 flow [2024-02-20 11:55:56,144 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-02-20 11:55:56,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2024-02-20 11:55:56,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 327 transitions. [2024-02-20 11:55:56,146 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5505050505050505 [2024-02-20 11:55:56,146 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 95 predicate places. [2024-02-20 11:55:56,146 INFO L507 AbstractCegarLoop]: Abstraction has has 125 places, 1969 transitions, 51860 flow [2024-02-20 11:55:56,147 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) [2024-02-20 11:55:56,147 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:56,147 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] [2024-02-20 11:55:56,164 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:56,360 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 [2024-02-20 11:55:56,360 INFO L432 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-02-20 11:55:56,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:56,361 INFO L85 PathProgramCache]: Analyzing trace with hash -1708691524, now seen corresponding path program 3 times [2024-02-20 11:55:56,361 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:56,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1296033477] [2024-02-20 11:55:56,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:56,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:56,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:56,537 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:56,537 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:56,537 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1296033477] [2024-02-20 11:55:56,537 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1296033477] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:56,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1488086537] [2024-02-20 11:55:56,538 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:55:56,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:56,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:56,539 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) [2024-02-20 11:55:56,558 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-02-20 11:55:56,636 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:55:56,637 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:56,637 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:55:56,638 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:56,713 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:56,714 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:56,828 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:56,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1488086537] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:56,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:56,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 12 [2024-02-20 11:55:56,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [806619345] [2024-02-20 11:55:56,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:56,829 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:55:56,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:56,830 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:55:56,830 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:55:56,835 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:56,836 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 125 places, 1969 transitions, 51860 flow. Second operand has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-02-20 11:55:56,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:56,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:56,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:55:58,627 INFO L124 PetriNetUnfolderBase]: 3947/6105 cut-off events. [2024-02-20 11:55:58,627 INFO L125 PetriNetUnfolderBase]: For 4068/4068 co-relation queries the response was YES. [2024-02-20 11:55:58,633 INFO L83 FinitePrefix]: Finished finitePrefix Result has 84752 conditions, 6105 events. 3947/6105 cut-off events. For 4068/4068 co-relation queries the response was YES. Maximal size of possible extension queue 374. Compared 34927 event pairs, 18 based on Foata normal form. 0/4285 useless extension candidates. Maximal degree in co-relation 78964. Up to 5122 conditions per place. [2024-02-20 11:55:58,795 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1836 selfloop transitions, 101 changer transitions 107/2045 dead transitions. [2024-02-20 11:55:58,795 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 134 places, 2045 transitions, 57984 flow [2024-02-20 11:55:58,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-02-20 11:55:58,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-02-20 11:55:58,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 142 transitions. [2024-02-20 11:55:58,808 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5259259259259259 [2024-02-20 11:55:58,809 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 104 predicate places. [2024-02-20 11:55:58,809 INFO L507 AbstractCegarLoop]: Abstraction has has 134 places, 2045 transitions, 57984 flow [2024-02-20 11:55:58,809 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.833333333333333) internal successors, (82), 12 states have internal predecessors, (82), 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) [2024-02-20 11:55:58,809 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:55:58,809 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] [2024-02-20 11:55:58,822 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-02-20 11:55:59,010 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,SelfDestructingSolverStorable12 [2024-02-20 11:55:59,010 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)] === [2024-02-20 11:55:59,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:55:59,010 INFO L85 PathProgramCache]: Analyzing trace with hash -1170835946, now seen corresponding path program 4 times [2024-02-20 11:55:59,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:55:59,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124920104] [2024-02-20 11:55:59,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:55:59,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:55:59,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:55:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:59,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:55:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124920104] [2024-02-20 11:55:59,153 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124920104] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:55:59,153 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1043483952] [2024-02-20 11:55:59,153 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:55:59,153 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:55:59,154 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:55:59,155 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) [2024-02-20 11:55:59,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-02-20 11:55:59,249 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:55:59,249 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:55:59,251 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:55:59,252 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:55:59,330 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:59,331 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:55:59,520 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:55:59,520 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1043483952] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:55:59,520 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:55:59,520 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-20 11:55:59,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [94880927] [2024-02-20 11:55:59,522 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:55:59,522 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:55:59,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:55:59,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:55:59,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:55:59,533 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:55:59,533 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 2045 transitions, 57984 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) [2024-02-20 11:55:59,534 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:55:59,534 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:55:59,534 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:01,937 INFO L124 PetriNetUnfolderBase]: 3994/6171 cut-off events. [2024-02-20 11:56:01,937 INFO L125 PetriNetUnfolderBase]: For 4075/4075 co-relation queries the response was YES. [2024-02-20 11:56:01,942 INFO L83 FinitePrefix]: Finished finitePrefix Result has 91831 conditions, 6171 events. 3994/6171 cut-off events. For 4075/4075 co-relation queries the response was YES. Maximal size of possible extension queue 379. Compared 35324 event pairs, 18 based on Foata normal form. 0/4343 useless extension candidates. Maximal degree in co-relation 85669. Up to 5189 conditions per place. [2024-02-20 11:56:01,991 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1722 selfloop transitions, 243 changer transitions 107/2073 dead transitions. [2024-02-20 11:56:01,991 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 2073 transitions, 62927 flow [2024-02-20 11:56:01,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 11:56:01,992 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 11:56:01,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 276 transitions. [2024-02-20 11:56:01,993 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-02-20 11:56:01,993 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 124 predicate places. [2024-02-20 11:56:01,993 INFO L507 AbstractCegarLoop]: Abstraction has has 154 places, 2073 transitions, 62927 flow [2024-02-20 11:56:01,994 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) [2024-02-20 11:56:01,994 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:01,994 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] [2024-02-20 11:56:02,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:02,195 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,SelfDestructingSolverStorable13 [2024-02-20 11:56:02,195 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)] === [2024-02-20 11:56:02,196 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:02,196 INFO L85 PathProgramCache]: Analyzing trace with hash 765555421, now seen corresponding path program 2 times [2024-02-20 11:56:02,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:02,196 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2090182726] [2024-02-20 11:56:02,196 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:02,196 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:02,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:02,327 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:02,327 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:02,327 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2090182726] [2024-02-20 11:56:02,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2090182726] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:02,328 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:02,328 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:56:02,328 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984558064] [2024-02-20 11:56:02,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:02,328 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:56:02,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:02,329 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:56:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:56:02,332 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:02,332 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 2073 transitions, 62927 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) [2024-02-20 11:56:02,332 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:02,332 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:02,332 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:04,322 INFO L124 PetriNetUnfolderBase]: 4227/6549 cut-off events. [2024-02-20 11:56:04,322 INFO L125 PetriNetUnfolderBase]: For 4535/4535 co-relation queries the response was YES. [2024-02-20 11:56:04,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 104019 conditions, 6549 events. 4227/6549 cut-off events. For 4535/4535 co-relation queries the response was YES. Maximal size of possible extension queue 403. Compared 38077 event pairs, 26 based on Foata normal form. 0/4615 useless extension candidates. Maximal degree in co-relation 97040. Up to 5889 conditions per place. [2024-02-20 11:56:04,388 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1963 selfloop transitions, 88 changer transitions 155/2207 dead transitions. [2024-02-20 11:56:04,389 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 160 places, 2207 transitions, 71443 flow [2024-02-20 11:56:04,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:56:04,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:56:04,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 102 transitions. [2024-02-20 11:56:04,390 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-02-20 11:56:04,390 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 130 predicate places. [2024-02-20 11:56:04,390 INFO L507 AbstractCegarLoop]: Abstraction has has 160 places, 2207 transitions, 71443 flow [2024-02-20 11:56:04,390 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) [2024-02-20 11:56:04,391 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:04,391 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] [2024-02-20 11:56:04,391 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-02-20 11:56:04,391 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)] === [2024-02-20 11:56:04,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:04,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1889442171, now seen corresponding path program 3 times [2024-02-20 11:56:04,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:04,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1233660755] [2024-02-20 11:56:04,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:04,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:04,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:04,532 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:04,532 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1233660755] [2024-02-20 11:56:04,532 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1233660755] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:04,532 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [81077696] [2024-02-20 11:56:04,532 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:56:04,533 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:04,533 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:04,536 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) [2024-02-20 11:56:04,560 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-02-20 11:56:04,634 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:56:04,634 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:04,635 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:56:04,636 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:04,700 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:04,701 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:04,996 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:04,997 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [81077696] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:04,997 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:04,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 15 [2024-02-20 11:56:04,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469233967] [2024-02-20 11:56:04,997 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:04,998 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:56:04,998 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:04,999 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:56:04,999 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:56:05,031 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:05,031 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 160 places, 2207 transitions, 71443 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) [2024-02-20 11:56:05,031 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:05,031 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:05,031 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:07,435 INFO L124 PetriNetUnfolderBase]: 4328/6711 cut-off events. [2024-02-20 11:56:07,435 INFO L125 PetriNetUnfolderBase]: For 4452/4452 co-relation queries the response was YES. [2024-02-20 11:56:07,442 INFO L83 FinitePrefix]: Finished finitePrefix Result has 113287 conditions, 6711 events. 4328/6711 cut-off events. For 4452/4452 co-relation queries the response was YES. Maximal size of possible extension queue 412. Compared 39271 event pairs, 22 based on Foata normal form. 0/4739 useless extension candidates. Maximal degree in co-relation 105843. Up to 6102 conditions per place. [2024-02-20 11:56:07,534 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1998 selfloop transitions, 111 changer transitions 155/2265 dead transitions. [2024-02-20 11:56:07,534 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 171 places, 2265 transitions, 77866 flow [2024-02-20 11:56:07,534 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:56:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:56:07,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 154 transitions. [2024-02-20 11:56:07,535 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47530864197530864 [2024-02-20 11:56:07,536 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 141 predicate places. [2024-02-20 11:56:07,536 INFO L507 AbstractCegarLoop]: Abstraction has has 171 places, 2265 transitions, 77866 flow [2024-02-20 11:56:07,536 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) [2024-02-20 11:56:07,536 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:07,536 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] [2024-02-20 11:56:07,549 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:07,748 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,SelfDestructingSolverStorable15 [2024-02-20 11:56:07,748 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)] === [2024-02-20 11:56:07,749 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:07,749 INFO L85 PathProgramCache]: Analyzing trace with hash -775340104, now seen corresponding path program 5 times [2024-02-20 11:56:07,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:07,749 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709053969] [2024-02-20 11:56:07,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:07,749 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:07,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:07,886 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:07,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:07,886 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709053969] [2024-02-20 11:56:07,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709053969] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:07,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2107448665] [2024-02-20 11:56:07,887 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:56:07,887 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:07,887 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:07,888 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) [2024-02-20 11:56:07,909 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-02-20 11:56:07,976 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:56:07,977 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:07,978 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:56:07,979 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:08,075 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:08,075 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:08,645 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:08,645 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2107448665] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:08,645 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:08,645 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 16 [2024-02-20 11:56:08,646 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964258164] [2024-02-20 11:56:08,646 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:08,646 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:56:08,646 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:08,647 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:56:08,647 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=179, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:56:08,650 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:08,651 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 171 places, 2265 transitions, 77866 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) [2024-02-20 11:56:08,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:08,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:08,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:12,405 INFO L124 PetriNetUnfolderBase]: 5171/7946 cut-off events. [2024-02-20 11:56:12,405 INFO L125 PetriNetUnfolderBase]: For 5146/5146 co-relation queries the response was YES. [2024-02-20 11:56:12,411 INFO L83 FinitePrefix]: Finished finitePrefix Result has 142143 conditions, 7946 events. 5171/7946 cut-off events. For 5146/5146 co-relation queries the response was YES. Maximal size of possible extension queue 482. Compared 47119 event pairs, 30 based on Foata normal form. 0/5564 useless extension candidates. Maximal degree in co-relation 132428. Up to 7161 conditions per place. [2024-02-20 11:56:12,499 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 1991 selfloop transitions, 513 changer transitions 155/2660 dead transitions. [2024-02-20 11:56:12,499 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 197 places, 2660 transitions, 96760 flow [2024-02-20 11:56:12,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 11:56:12,500 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 11:56:12,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 359 transitions. [2024-02-20 11:56:12,501 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4924554183813443 [2024-02-20 11:56:12,501 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 167 predicate places. [2024-02-20 11:56:12,501 INFO L507 AbstractCegarLoop]: Abstraction has has 197 places, 2660 transitions, 96760 flow [2024-02-20 11:56:12,502 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) [2024-02-20 11:56:12,502 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:12,502 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] [2024-02-20 11:56:12,514 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:12,712 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,SelfDestructingSolverStorable16 [2024-02-20 11:56:12,712 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)] === [2024-02-20 11:56:12,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:12,713 INFO L85 PathProgramCache]: Analyzing trace with hash 87852144, now seen corresponding path program 6 times [2024-02-20 11:56:12,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:12,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [256343578] [2024-02-20 11:56:12,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:12,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:12,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:13,067 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:13,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:13,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [256343578] [2024-02-20 11:56:13,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [256343578] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:13,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1185941044] [2024-02-20 11:56:13,068 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:56:13,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:13,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:13,069 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) [2024-02-20 11:56:13,072 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-02-20 11:56:13,174 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:56:13,174 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:13,175 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:56:13,176 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:13,250 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:13,250 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:13,373 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:13,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1185941044] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:13,374 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:13,374 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-02-20 11:56:13,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692052610] [2024-02-20 11:56:13,374 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:13,375 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 11:56:13,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:13,375 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 11:56:13,376 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=195, Unknown=0, NotChecked=0, Total=272 [2024-02-20 11:56:13,388 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:13,388 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 197 places, 2660 transitions, 96760 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) [2024-02-20 11:56:13,388 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:13,388 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:13,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:17,404 INFO L124 PetriNetUnfolderBase]: 5268/8093 cut-off events. [2024-02-20 11:56:17,405 INFO L125 PetriNetUnfolderBase]: For 5402/5402 co-relation queries the response was YES. [2024-02-20 11:56:17,410 INFO L83 FinitePrefix]: Finished finitePrefix Result has 152851 conditions, 8093 events. 5268/8093 cut-off events. For 5402/5402 co-relation queries the response was YES. Maximal size of possible extension queue 492. Compared 48109 event pairs, 32 based on Foata normal form. 0/5675 useless extension candidates. Maximal degree in co-relation 142605. Up to 7280 conditions per place. [2024-02-20 11:56:17,505 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 2223 selfloop transitions, 344 changer transitions 155/2723 dead transitions. [2024-02-20 11:56:17,506 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 2723 transitions, 104502 flow [2024-02-20 11:56:17,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:56:17,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:56:17,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 247 transitions. [2024-02-20 11:56:17,508 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-02-20 11:56:17,508 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 185 predicate places. [2024-02-20 11:56:17,508 INFO L507 AbstractCegarLoop]: Abstraction has has 215 places, 2723 transitions, 104502 flow [2024-02-20 11:56:17,509 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) [2024-02-20 11:56:17,509 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:17,509 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] [2024-02-20 11:56:17,522 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-02-20 11:56:17,720 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-02-20 11:56:17,721 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)] === [2024-02-20 11:56:17,721 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:17,721 INFO L85 PathProgramCache]: Analyzing trace with hash -1162588261, now seen corresponding path program 9 times [2024-02-20 11:56:17,721 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:17,721 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [371087359] [2024-02-20 11:56:17,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:17,721 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:17,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:17,864 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:17,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:17,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [371087359] [2024-02-20 11:56:17,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [371087359] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:17,865 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1220772102] [2024-02-20 11:56:17,865 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:56:17,865 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:17,865 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:17,866 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) [2024-02-20 11:56:17,889 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-02-20 11:56:17,956 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:56:17,956 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:17,957 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:56:17,958 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:18,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:18,043 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:18,380 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:18,381 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1220772102] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:18,381 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:18,381 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-02-20 11:56:18,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432153511] [2024-02-20 11:56:18,381 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:18,382 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 11:56:18,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:18,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 11:56:18,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-02-20 11:56:18,389 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:18,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 2723 transitions, 104502 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) [2024-02-20 11:56:18,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:18,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:18,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:24,599 INFO L124 PetriNetUnfolderBase]: 7026/10854 cut-off events. [2024-02-20 11:56:24,599 INFO L125 PetriNetUnfolderBase]: For 5878/5878 co-relation queries the response was YES. [2024-02-20 11:56:24,606 INFO L83 FinitePrefix]: Finished finitePrefix Result has 215861 conditions, 10854 events. 7026/10854 cut-off events. For 5878/5878 co-relation queries the response was YES. Maximal size of possible extension queue 657. Compared 68334 event pairs, 34 based on Foata normal form. 0/7578 useless extension candidates. Maximal degree in co-relation 201388. Up to 10006 conditions per place. [2024-02-20 11:56:24,718 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 2766 selfloop transitions, 769 changer transitions 155/3691 dead transitions. [2024-02-20 11:56:24,718 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 241 places, 3691 transitions, 149191 flow [2024-02-20 11:56:24,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-02-20 11:56:24,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-02-20 11:56:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 374 transitions. [2024-02-20 11:56:24,720 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5130315500685871 [2024-02-20 11:56:24,720 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 211 predicate places. [2024-02-20 11:56:24,720 INFO L507 AbstractCegarLoop]: Abstraction has has 241 places, 3691 transitions, 149191 flow [2024-02-20 11:56:24,721 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) [2024-02-20 11:56:24,721 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:24,721 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] [2024-02-20 11:56:24,732 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:24,921 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:24,922 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)] === [2024-02-20 11:56:24,922 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:24,922 INFO L85 PathProgramCache]: Analyzing trace with hash -1468604871, now seen corresponding path program 10 times [2024-02-20 11:56:24,922 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:24,922 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1458860277] [2024-02-20 11:56:24,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:24,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:25,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:25,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:25,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1458860277] [2024-02-20 11:56:25,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1458860277] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:25,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782818021] [2024-02-20 11:56:25,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 11:56:25,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:25,045 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:25,048 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) [2024-02-20 11:56:25,055 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-02-20 11:56:25,154 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 11:56:25,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:25,156 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:56:25,156 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:25,225 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:25,226 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:25,355 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:25,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1782818021] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:25,355 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:25,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-20 11:56:25,357 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940631169] [2024-02-20 11:56:25,357 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:25,357 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:56:25,358 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:25,360 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:56:25,360 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:56:25,370 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:25,370 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 241 places, 3691 transitions, 149191 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) [2024-02-20 11:56:25,371 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:25,371 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:25,371 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:33,116 INFO L124 PetriNetUnfolderBase]: 7106/10984 cut-off events. [2024-02-20 11:56:33,116 INFO L125 PetriNetUnfolderBase]: For 5912/5912 co-relation queries the response was YES. [2024-02-20 11:56:33,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 229389 conditions, 10984 events. 7106/10984 cut-off events. For 5912/5912 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 69369 event pairs, 40 based on Foata normal form. 0/7686 useless extension candidates. Maximal degree in co-relation 214077. Up to 10136 conditions per place. [2024-02-20 11:56:33,378 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3095 selfloop transitions, 527 changer transitions 155/3778 dead transitions. [2024-02-20 11:56:33,379 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 261 places, 3778 transitions, 160255 flow [2024-02-20 11:56:33,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-02-20 11:56:33,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-02-20 11:56:33,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 271 transitions. [2024-02-20 11:56:33,380 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47795414462081126 [2024-02-20 11:56:33,381 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 231 predicate places. [2024-02-20 11:56:33,381 INFO L507 AbstractCegarLoop]: Abstraction has has 261 places, 3778 transitions, 160255 flow [2024-02-20 11:56:33,381 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) [2024-02-20 11:56:33,381 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:33,381 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] [2024-02-20 11:56:33,414 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:33,596 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:33,596 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)] === [2024-02-20 11:56:33,596 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:33,596 INFO L85 PathProgramCache]: Analyzing trace with hash 452615545, now seen corresponding path program 11 times [2024-02-20 11:56:33,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:33,597 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [457864764] [2024-02-20 11:56:33,597 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:33,597 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:33,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:33,723 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:33,724 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [457864764] [2024-02-20 11:56:33,724 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [457864764] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:33,724 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2081769936] [2024-02-20 11:56:33,724 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 11:56:33,724 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:33,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:33,726 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) [2024-02-20 11:56:33,743 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-02-20 11:56:33,813 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:56:33,813 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:33,814 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:56:33,815 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:33,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:33,904 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:34,027 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:34,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2081769936] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:34,028 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:34,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-20 11:56:34,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537516723] [2024-02-20 11:56:34,028 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:34,028 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:56:34,028 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:34,028 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:56:34,029 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:56:34,035 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:34,036 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 261 places, 3778 transitions, 160255 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) [2024-02-20 11:56:34,036 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:34,036 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:34,036 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:42,329 INFO L124 PetriNetUnfolderBase]: 7086/10926 cut-off events. [2024-02-20 11:56:42,329 INFO L125 PetriNetUnfolderBase]: For 5908/5908 co-relation queries the response was YES. [2024-02-20 11:56:42,336 INFO L83 FinitePrefix]: Finished finitePrefix Result has 239147 conditions, 10926 events. 7086/10926 cut-off events. For 5908/5908 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 68715 event pairs, 28 based on Foata normal form. 0/7670 useless extension candidates. Maximal degree in co-relation 223394. Up to 10084 conditions per place. [2024-02-20 11:56:42,579 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3052 selfloop transitions, 538 changer transitions 155/3746 dead transitions. [2024-02-20 11:56:42,579 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 279 places, 3746 transitions, 166371 flow [2024-02-20 11:56:42,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:56:42,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:56:42,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 259 transitions. [2024-02-20 11:56:42,581 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5048732943469786 [2024-02-20 11:56:42,581 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 249 predicate places. [2024-02-20 11:56:42,581 INFO L507 AbstractCegarLoop]: Abstraction has has 279 places, 3746 transitions, 166371 flow [2024-02-20 11:56:42,582 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) [2024-02-20 11:56:42,582 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:42,582 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] [2024-02-20 11:56:42,594 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-02-20 11:56:42,784 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:42,784 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)] === [2024-02-20 11:56:42,784 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:42,785 INFO L85 PathProgramCache]: Analyzing trace with hash -2048386541, now seen corresponding path program 12 times [2024-02-20 11:56:42,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:42,785 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [84662029] [2024-02-20 11:56:42,785 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:42,785 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:42,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:42,904 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:42,904 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [84662029] [2024-02-20 11:56:42,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [84662029] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:56:42,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [389402638] [2024-02-20 11:56:42,905 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-02-20 11:56:42,905 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:42,905 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:56:42,906 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) [2024-02-20 11:56:42,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-02-20 11:56:43,016 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-02-20 11:56:43,016 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:56:43,018 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:56:43,018 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:56:43,096 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:43,097 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:56:43,385 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:43,385 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [389402638] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:56:43,385 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:56:43,385 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-02-20 11:56:43,386 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116406442] [2024-02-20 11:56:43,386 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:56:43,386 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:56:43,386 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:43,387 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:56:43,387 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:56:43,390 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:43,391 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 279 places, 3746 transitions, 166371 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) [2024-02-20 11:56:43,391 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:43,391 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:43,391 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:56:54,238 INFO L124 PetriNetUnfolderBase]: 7776/12249 cut-off events. [2024-02-20 11:56:54,238 INFO L125 PetriNetUnfolderBase]: For 6487/6487 co-relation queries the response was YES. [2024-02-20 11:56:54,246 INFO L83 FinitePrefix]: Finished finitePrefix Result has 280165 conditions, 12249 events. 7776/12249 cut-off events. For 6487/6487 co-relation queries the response was YES. Maximal size of possible extension queue 765. Compared 81442 event pairs, 44 based on Foata normal form. 0/8683 useless extension candidates. Maximal degree in co-relation 261267. Up to 11360 conditions per place. [2024-02-20 11:56:54,394 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3370 selfloop transitions, 769 changer transitions 176/4316 dead transitions. [2024-02-20 11:56:54,394 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 4316 transitions, 200428 flow [2024-02-20 11:56:54,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-20 11:56:54,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-20 11:56:54,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 340 transitions. [2024-02-20 11:56:54,395 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5037037037037037 [2024-02-20 11:56:54,396 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 273 predicate places. [2024-02-20 11:56:54,396 INFO L507 AbstractCegarLoop]: Abstraction has has 303 places, 4316 transitions, 200428 flow [2024-02-20 11:56:54,396 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) [2024-02-20 11:56:54,396 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:56:54,396 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] [2024-02-20 11:56:54,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-02-20 11:56:54,608 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:56:54,608 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)] === [2024-02-20 11:56:54,609 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:56:54,609 INFO L85 PathProgramCache]: Analyzing trace with hash -2140804873, now seen corresponding path program 4 times [2024-02-20 11:56:54,609 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:56:54,609 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145004960] [2024-02-20 11:56:54,609 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:56:54,609 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:56:54,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:56:54,739 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:56:54,740 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:56:54,740 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145004960] [2024-02-20 11:56:54,740 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145004960] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:56:54,740 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:56:54,740 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:56:54,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [17526070] [2024-02-20 11:56:54,741 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:56:54,741 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:56:54,741 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:56:54,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:56:54,742 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:56:54,745 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:56:54,745 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 303 places, 4316 transitions, 200428 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) [2024-02-20 11:56:54,745 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:56:54,745 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:56:54,745 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:06,138 INFO L124 PetriNetUnfolderBase]: 7742/12200 cut-off events. [2024-02-20 11:57:06,138 INFO L125 PetriNetUnfolderBase]: For 6467/6467 co-relation queries the response was YES. [2024-02-20 11:57:06,146 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291178 conditions, 12200 events. 7742/12200 cut-off events. For 6467/6467 co-relation queries the response was YES. Maximal size of possible extension queue 763. Compared 81134 event pairs, 48 based on Foata normal form. 0/8664 useless extension candidates. Maximal degree in co-relation 271522. Up to 11432 conditions per place. [2024-02-20 11:57:06,302 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3985 selfloop transitions, 115 changer transitions 202/4303 dead transitions. [2024-02-20 11:57:06,302 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 309 places, 4303 transitions, 208425 flow [2024-02-20 11:57:06,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:57:06,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:57:06,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 99 transitions. [2024-02-20 11:57:06,303 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-02-20 11:57:06,304 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 279 predicate places. [2024-02-20 11:57:06,304 INFO L507 AbstractCegarLoop]: Abstraction has has 309 places, 4303 transitions, 208425 flow [2024-02-20 11:57:06,304 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) [2024-02-20 11:57:06,304 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:06,304 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] [2024-02-20 11:57:06,304 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-02-20 11:57:06,304 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)] === [2024-02-20 11:57:06,305 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:06,305 INFO L85 PathProgramCache]: Analyzing trace with hash 1300580251, now seen corresponding path program 13 times [2024-02-20 11:57:06,305 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:06,305 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [696836275] [2024-02-20 11:57:06,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:06,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:06,424 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:06,424 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [696836275] [2024-02-20 11:57:06,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [696836275] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:57:06,424 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1798544960] [2024-02-20 11:57:06,425 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 11:57:06,425 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:06,425 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:57:06,426 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) [2024-02-20 11:57:06,426 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-02-20 11:57:06,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:06,520 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:57:06,521 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:57:06,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:06,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:57:06,730 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:06,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1798544960] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:57:06,730 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:57:06,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 14 [2024-02-20 11:57:06,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008153482] [2024-02-20 11:57:06,731 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:57:06,731 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-02-20 11:57:06,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:06,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-02-20 11:57:06,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2024-02-20 11:57:06,742 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:57:06,742 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 309 places, 4303 transitions, 208425 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) [2024-02-20 11:57:06,743 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:06,743 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:57:06,743 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:19,463 INFO L124 PetriNetUnfolderBase]: 7821/12344 cut-off events. [2024-02-20 11:57:19,463 INFO L125 PetriNetUnfolderBase]: For 6272/6272 co-relation queries the response was YES. [2024-02-20 11:57:19,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 306892 conditions, 12344 events. 7821/12344 cut-off events. For 6272/6272 co-relation queries the response was YES. Maximal size of possible extension queue 786. Compared 82456 event pairs, 50 based on Foata normal form. 0/8786 useless extension candidates. Maximal degree in co-relation 286378. Up to 11564 conditions per place. [2024-02-20 11:57:19,822 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 3736 selfloop transitions, 431 changer transitions 202/4370 dead transitions. [2024-02-20 11:57:19,822 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 327 places, 4370 transitions, 220412 flow [2024-02-20 11:57:19,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-02-20 11:57:19,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-02-20 11:57:19,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 239 transitions. [2024-02-20 11:57:19,823 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.46588693957115007 [2024-02-20 11:57:19,823 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 297 predicate places. [2024-02-20 11:57:19,823 INFO L507 AbstractCegarLoop]: Abstraction has has 327 places, 4370 transitions, 220412 flow [2024-02-20 11:57:19,824 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) [2024-02-20 11:57:19,824 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:19,824 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] [2024-02-20 11:57:19,836 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-02-20 11:57:20,024 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:57:20,024 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)] === [2024-02-20 11:57:20,025 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:20,025 INFO L85 PathProgramCache]: Analyzing trace with hash 1145730586, now seen corresponding path program 7 times [2024-02-20 11:57:20,025 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:20,025 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263070614] [2024-02-20 11:57:20,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:20,025 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:20,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:20,174 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:20,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:20,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263070614] [2024-02-20 11:57:20,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263070614] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:20,175 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:20,175 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:57:20,175 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [51380077] [2024-02-20 11:57:20,175 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:20,178 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:57:20,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:20,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:57:20,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:57:20,188 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:57:20,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 327 places, 4370 transitions, 220412 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) [2024-02-20 11:57:20,189 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:20,189 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:57:20,189 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:33,073 INFO L124 PetriNetUnfolderBase]: 7842/12373 cut-off events. [2024-02-20 11:57:33,073 INFO L125 PetriNetUnfolderBase]: For 6380/6380 co-relation queries the response was YES. [2024-02-20 11:57:33,080 INFO L83 FinitePrefix]: Finished finitePrefix Result has 319913 conditions, 12373 events. 7842/12373 cut-off events. For 6380/6380 co-relation queries the response was YES. Maximal size of possible extension queue 776. Compared 82653 event pairs, 50 based on Foata normal form. 0/8805 useless extension candidates. Maximal degree in co-relation 298591. Up to 11665 conditions per place. [2024-02-20 11:57:33,231 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4050 selfloop transitions, 128 changer transitions 207/4386 dead transitions. [2024-02-20 11:57:33,231 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 333 places, 4386 transitions, 229985 flow [2024-02-20 11:57:33,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:57:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:57:33,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 90 transitions. [2024-02-20 11:57:33,232 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-02-20 11:57:33,232 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 303 predicate places. [2024-02-20 11:57:33,232 INFO L507 AbstractCegarLoop]: Abstraction has has 333 places, 4386 transitions, 229985 flow [2024-02-20 11:57:33,232 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) [2024-02-20 11:57:33,232 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:33,232 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] [2024-02-20 11:57:33,233 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-02-20 11:57:33,233 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)] === [2024-02-20 11:57:33,233 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:33,233 INFO L85 PathProgramCache]: Analyzing trace with hash -2136544178, now seen corresponding path program 8 times [2024-02-20 11:57:33,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:33,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1419451784] [2024-02-20 11:57:33,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:33,234 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:33,341 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:33,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:33,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1419451784] [2024-02-20 11:57:33,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1419451784] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:33,341 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:33,341 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:57:33,342 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042649865] [2024-02-20 11:57:33,342 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:33,342 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:57:33,342 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:33,343 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:57:33,343 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:57:33,350 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:57:33,351 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 333 places, 4386 transitions, 229985 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) [2024-02-20 11:57:33,351 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:33,351 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:57:33,351 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:57:48,078 INFO L124 PetriNetUnfolderBase]: 7860/12399 cut-off events. [2024-02-20 11:57:48,078 INFO L125 PetriNetUnfolderBase]: For 6405/6405 co-relation queries the response was YES. [2024-02-20 11:57:48,086 INFO L83 FinitePrefix]: Finished finitePrefix Result has 332912 conditions, 12399 events. 7860/12399 cut-off events. For 6405/6405 co-relation queries the response was YES. Maximal size of possible extension queue 778. Compared 82890 event pairs, 50 based on Foata normal form. 0/8823 useless extension candidates. Maximal degree in co-relation 310782. Up to 11691 conditions per place. [2024-02-20 11:57:48,253 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4053 selfloop transitions, 130 changer transitions 213/4397 dead transitions. [2024-02-20 11:57:48,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 339 places, 4397 transitions, 239355 flow [2024-02-20 11:57:48,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:57:48,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:57:48,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 92 transitions. [2024-02-20 11:57:48,254 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48677248677248675 [2024-02-20 11:57:48,254 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 309 predicate places. [2024-02-20 11:57:48,254 INFO L507 AbstractCegarLoop]: Abstraction has has 339 places, 4397 transitions, 239355 flow [2024-02-20 11:57:48,254 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) [2024-02-20 11:57:48,254 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:57:48,254 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] [2024-02-20 11:57:48,254 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-02-20 11:57:48,254 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)] === [2024-02-20 11:57:48,254 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:57:48,255 INFO L85 PathProgramCache]: Analyzing trace with hash -1353324522, now seen corresponding path program 9 times [2024-02-20 11:57:48,255 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:57:48,255 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593086416] [2024-02-20 11:57:48,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:57:48,255 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:57:48,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:57:48,354 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:57:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:57:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593086416] [2024-02-20 11:57:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593086416] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:57:48,355 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:57:48,355 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:57:48,355 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094722434] [2024-02-20 11:57:48,355 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:57:48,356 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:57:48,356 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:57:48,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:57:48,356 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:57:48,364 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:57:48,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 339 places, 4397 transitions, 239355 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) [2024-02-20 11:57:48,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:57:48,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:57:48,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:05,591 INFO L124 PetriNetUnfolderBase]: 7876/12425 cut-off events. [2024-02-20 11:58:05,591 INFO L125 PetriNetUnfolderBase]: For 6289/6289 co-relation queries the response was YES. [2024-02-20 11:58:05,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 345964 conditions, 12425 events. 7876/12425 cut-off events. For 6289/6289 co-relation queries the response was YES. Maximal size of possible extension queue 782. Compared 83058 event pairs, 54 based on Foata normal form. 0/8845 useless extension candidates. Maximal degree in co-relation 323026. Up to 11717 conditions per place. [2024-02-20 11:58:05,778 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4060 selfloop transitions, 131 changer transitions 213/4405 dead transitions. [2024-02-20 11:58:05,778 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 345 places, 4405 transitions, 248601 flow [2024-02-20 11:58:05,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:58:05,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:58:05,779 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-20 11:58:05,779 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-20 11:58:05,779 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 315 predicate places. [2024-02-20 11:58:05,779 INFO L507 AbstractCegarLoop]: Abstraction has has 345 places, 4405 transitions, 248601 flow [2024-02-20 11:58:05,779 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) [2024-02-20 11:58:05,779 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:05,779 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] [2024-02-20 11:58:05,779 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-02-20 11:58:05,780 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)] === [2024-02-20 11:58:05,780 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:05,780 INFO L85 PathProgramCache]: Analyzing trace with hash 160126475, now seen corresponding path program 14 times [2024-02-20 11:58:05,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:05,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [391989753] [2024-02-20 11:58:05,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:05,780 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:05,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:05,911 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:05,911 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:05,911 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [391989753] [2024-02-20 11:58:05,912 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [391989753] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:05,912 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1071897684] [2024-02-20 11:58:05,912 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 11:58:05,912 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:05,912 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:05,913 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) [2024-02-20 11:58:05,920 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-02-20 11:58:06,029 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 11:58:06,029 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:06,030 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 11:58:06,031 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:06,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:06,101 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:06,214 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:06,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1071897684] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:58:06,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:58:06,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-02-20 11:58:06,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [129798463] [2024-02-20 11:58:06,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:58:06,215 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 11:58:06,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:06,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 11:58:06,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-20 11:58:06,223 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:58:06,223 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 345 places, 4405 transitions, 248601 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) [2024-02-20 11:58:06,223 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:06,223 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:58:06,223 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:25,097 INFO L124 PetriNetUnfolderBase]: 8356/13147 cut-off events. [2024-02-20 11:58:25,097 INFO L125 PetriNetUnfolderBase]: For 6605/6605 co-relation queries the response was YES. [2024-02-20 11:58:25,106 INFO L83 FinitePrefix]: Finished finitePrefix Result has 379115 conditions, 13147 events. 8356/13147 cut-off events. For 6605/6605 co-relation queries the response was YES. Maximal size of possible extension queue 825. Compared 88216 event pairs, 52 based on Foata normal form. 0/9335 useless extension candidates. Maximal degree in co-relation 355009. Up to 12396 conditions per place. [2024-02-20 11:58:25,305 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4008 selfloop transitions, 504 changer transitions 213/4726 dead transitions. [2024-02-20 11:58:25,305 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 368 places, 4726 transitions, 276145 flow [2024-02-20 11:58:25,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-02-20 11:58:25,305 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2024-02-20 11:58:25,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 288 transitions. [2024-02-20 11:58:25,306 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4444444444444444 [2024-02-20 11:58:25,306 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 338 predicate places. [2024-02-20 11:58:25,307 INFO L507 AbstractCegarLoop]: Abstraction has has 368 places, 4726 transitions, 276145 flow [2024-02-20 11:58:25,307 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) [2024-02-20 11:58:25,307 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:25,307 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] [2024-02-20 11:58:25,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-02-20 11:58:25,512 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:25,512 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)] === [2024-02-20 11:58:25,513 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:25,513 INFO L85 PathProgramCache]: Analyzing trace with hash -259232934, now seen corresponding path program 10 times [2024-02-20 11:58:25,513 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:25,513 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1476149313] [2024-02-20 11:58:25,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:25,513 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:25,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:25,626 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:25,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:25,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1476149313] [2024-02-20 11:58:25,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1476149313] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:58:25,627 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:58:25,627 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:58:25,627 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1856210943] [2024-02-20 11:58:25,627 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:58:25,628 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:58:25,628 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:25,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:58:25,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:58:25,634 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:58:25,635 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 368 places, 4726 transitions, 276145 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) [2024-02-20 11:58:25,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:25,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:58:25,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:58:46,234 INFO L124 PetriNetUnfolderBase]: 8418/13241 cut-off events. [2024-02-20 11:58:46,234 INFO L125 PetriNetUnfolderBase]: For 6385/6385 co-relation queries the response was YES. [2024-02-20 11:58:46,254 INFO L83 FinitePrefix]: Finished finitePrefix Result has 395006 conditions, 13241 events. 8418/13241 cut-off events. For 6385/6385 co-relation queries the response was YES. Maximal size of possible extension queue 832. Compared 88884 event pairs, 52 based on Foata normal form. 0/9407 useless extension candidates. Maximal degree in co-relation 370080. Up to 12471 conditions per place. [2024-02-20 11:58:46,470 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4396 selfloop transitions, 150 changer transitions 213/4760 dead transitions. [2024-02-20 11:58:46,470 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 374 places, 4760 transitions, 287653 flow [2024-02-20 11:58:46,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:58:46,471 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:58:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-20 11:58:46,471 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-20 11:58:46,472 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 344 predicate places. [2024-02-20 11:58:46,472 INFO L507 AbstractCegarLoop]: Abstraction has has 374 places, 4760 transitions, 287653 flow [2024-02-20 11:58:46,472 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) [2024-02-20 11:58:46,472 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:58:46,472 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] [2024-02-20 11:58:46,472 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2024-02-20 11:58:46,473 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)] === [2024-02-20 11:58:46,473 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:58:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 832581213, now seen corresponding path program 15 times [2024-02-20 11:58:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:58:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2131627666] [2024-02-20 11:58:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:58:46,474 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:58:46,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:58:46,582 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:46,583 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:58:46,583 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2131627666] [2024-02-20 11:58:46,583 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2131627666] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 11:58:46,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1154372122] [2024-02-20 11:58:46,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-02-20 11:58:46,584 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:58:46,584 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 11:58:46,585 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) [2024-02-20 11:58:46,587 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-02-20 11:58:46,696 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-02-20 11:58:46,696 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 11:58:46,697 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 11:58:46,698 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 11:58:46,746 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:46,746 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 11:58:46,834 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:58:46,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1154372122] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 11:58:46,834 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 11:58:46,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 6] total 12 [2024-02-20 11:58:46,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [818587865] [2024-02-20 11:58:46,834 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 11:58:46,834 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-02-20 11:58:46,834 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:58:46,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-02-20 11:58:46,835 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-02-20 11:58:46,847 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:58:46,848 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 374 places, 4760 transitions, 287653 flow. Second operand has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:58:46,848 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:58:46,848 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:58:46,848 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:11,318 INFO L124 PetriNetUnfolderBase]: 8543/13442 cut-off events. [2024-02-20 11:59:11,319 INFO L125 PetriNetUnfolderBase]: For 6438/6438 co-relation queries the response was YES. [2024-02-20 11:59:11,328 INFO L83 FinitePrefix]: Finished finitePrefix Result has 414413 conditions, 13442 events. 8543/13442 cut-off events. For 6438/6438 co-relation queries the response was YES. Maximal size of possible extension queue 857. Compared 90513 event pairs, 44 based on Foata normal form. 0/9568 useless extension candidates. Maximal degree in co-relation 388667. Up to 12672 conditions per place. [2024-02-20 11:59:11,554 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4177 selfloop transitions, 534 changer transitions 213/4925 dead transitions. [2024-02-20 11:59:11,555 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 385 places, 4925 transitions, 307460 flow [2024-02-20 11:59:11,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-02-20 11:59:11,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-02-20 11:59:11,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 163 transitions. [2024-02-20 11:59:11,556 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5030864197530864 [2024-02-20 11:59:11,556 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 355 predicate places. [2024-02-20 11:59:11,556 INFO L507 AbstractCegarLoop]: Abstraction has has 385 places, 4925 transitions, 307460 flow [2024-02-20 11:59:11,556 INFO L508 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 6.666666666666667) internal successors, (80), 12 states have internal predecessors, (80), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-02-20 11:59:11,557 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:11,557 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] [2024-02-20 11:59:11,573 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-02-20 11:59:11,768 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 11:59:11,768 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)] === [2024-02-20 11:59:11,769 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:11,769 INFO L85 PathProgramCache]: Analyzing trace with hash -106482383, now seen corresponding path program 16 times [2024-02-20 11:59:11,769 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:11,769 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [817607004] [2024-02-20 11:59:11,769 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:11,769 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:11,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:11,898 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:11,898 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:11,898 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [817607004] [2024-02-20 11:59:11,898 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [817607004] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:11,898 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:11,899 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:59:11,899 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360091730] [2024-02-20 11:59:11,899 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:11,899 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:59:11,899 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:11,900 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:59:11,900 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:59:11,908 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:59:11,909 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 385 places, 4925 transitions, 307460 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) [2024-02-20 11:59:11,909 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:11,909 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:59:11,909 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 11:59:36,981 INFO L124 PetriNetUnfolderBase]: 8551/13454 cut-off events. [2024-02-20 11:59:36,981 INFO L125 PetriNetUnfolderBase]: For 6413/6413 co-relation queries the response was YES. [2024-02-20 11:59:36,992 INFO L83 FinitePrefix]: Finished finitePrefix Result has 428155 conditions, 13454 events. 8551/13454 cut-off events. For 6413/6413 co-relation queries the response was YES. Maximal size of possible extension queue 858. Compared 90598 event pairs, 44 based on Foata normal form. 0/9576 useless extension candidates. Maximal degree in co-relation 401589. Up to 12683 conditions per place. [2024-02-20 11:59:37,244 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4571 selfloop transitions, 143 changer transitions 217/4932 dead transitions. [2024-02-20 11:59:37,244 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 391 places, 4932 transitions, 317756 flow [2024-02-20 11:59:37,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 11:59:37,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 11:59:37,245 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-02-20 11:59:37,245 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-02-20 11:59:37,246 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 361 predicate places. [2024-02-20 11:59:37,390 INFO L507 AbstractCegarLoop]: Abstraction has has 391 places, 4932 transitions, 317756 flow [2024-02-20 11:59:37,390 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) [2024-02-20 11:59:37,390 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 11:59:37,390 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] [2024-02-20 11:59:37,390 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2024-02-20 11:59:37,390 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)] === [2024-02-20 11:59:37,390 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 11:59:37,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1501832799, now seen corresponding path program 17 times [2024-02-20 11:59:37,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 11:59:37,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844576239] [2024-02-20 11:59:37,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 11:59:37,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 11:59:37,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 11:59:37,513 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 11:59:37,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 11:59:37,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844576239] [2024-02-20 11:59:37,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844576239] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 11:59:37,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 11:59:37,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 11:59:37,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1423346589] [2024-02-20 11:59:37,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 11:59:37,514 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 11:59:37,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 11:59:37,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 11:59:37,516 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-02-20 11:59:37,522 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 11:59:37,522 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 391 places, 4932 transitions, 317756 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) [2024-02-20 11:59:37,523 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 11:59:37,523 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 11:59:37,523 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:05,657 INFO L124 PetriNetUnfolderBase]: 8576/13497 cut-off events. [2024-02-20 12:00:05,658 INFO L125 PetriNetUnfolderBase]: For 6316/6316 co-relation queries the response was YES. [2024-02-20 12:00:05,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 442948 conditions, 13497 events. 8576/13497 cut-off events. For 6316/6316 co-relation queries the response was YES. Maximal size of possible extension queue 863. Compared 90922 event pairs, 48 based on Foata normal form. 0/9613 useless extension candidates. Maximal degree in co-relation 415562. Up to 12726 conditions per place. [2024-02-20 12:00:05,998 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4590 selfloop transitions, 148 changer transitions 217/4956 dead transitions. [2024-02-20 12:00:05,999 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 397 places, 4956 transitions, 329214 flow [2024-02-20 12:00:05,999 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:00:05,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:00:06,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 94 transitions. [2024-02-20 12:00:06,001 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4973544973544973 [2024-02-20 12:00:06,011 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 367 predicate places. [2024-02-20 12:00:06,012 INFO L507 AbstractCegarLoop]: Abstraction has has 397 places, 4956 transitions, 329214 flow [2024-02-20 12:00:06,012 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) [2024-02-20 12:00:06,012 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:06,012 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] [2024-02-20 12:00:06,013 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-02-20 12:00:06,013 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)] === [2024-02-20 12:00:06,013 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:06,013 INFO L85 PathProgramCache]: Analyzing trace with hash -612828649, now seen corresponding path program 18 times [2024-02-20 12:00:06,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:06,014 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2039391316] [2024-02-20 12:00:06,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:06,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:06,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:06,215 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:06,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:06,217 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2039391316] [2024-02-20 12:00:06,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2039391316] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:00:06,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:00:06,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 12:00:06,218 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1001586775] [2024-02-20 12:00:06,218 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:00:06,218 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:00:06,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:06,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:00:06,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:00:06,228 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:00:06,228 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 397 places, 4956 transitions, 329214 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) [2024-02-20 12:00:06,228 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:06,228 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:00:06,229 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:00:42,784 INFO L124 PetriNetUnfolderBase]: 8577/13500 cut-off events. [2024-02-20 12:00:42,785 INFO L125 PetriNetUnfolderBase]: For 6307/6307 co-relation queries the response was YES. [2024-02-20 12:00:42,803 INFO L83 FinitePrefix]: Finished finitePrefix Result has 456463 conditions, 13500 events. 8577/13500 cut-off events. For 6307/6307 co-relation queries the response was YES. Maximal size of possible extension queue 853. Compared 91027 event pairs, 44 based on Foata normal form. 0/9616 useless extension candidates. Maximal degree in co-relation 428257. Up to 12728 conditions per place. [2024-02-20 12:00:43,152 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4596 selfloop transitions, 141 changer transitions 220/4958 dead transitions. [2024-02-20 12:00:43,153 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 403 places, 4958 transitions, 339260 flow [2024-02-20 12:00:43,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:00:43,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:00:43,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 88 transitions. [2024-02-20 12:00:43,154 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4656084656084656 [2024-02-20 12:00:43,155 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 373 predicate places. [2024-02-20 12:00:43,156 INFO L507 AbstractCegarLoop]: Abstraction has has 403 places, 4958 transitions, 339260 flow [2024-02-20 12:00:43,156 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) [2024-02-20 12:00:43,156 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:00:43,156 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] [2024-02-20 12:00:43,156 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-02-20 12:00:43,156 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)] === [2024-02-20 12:00:43,157 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:00:43,157 INFO L85 PathProgramCache]: Analyzing trace with hash 1841963385, now seen corresponding path program 19 times [2024-02-20 12:00:43,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:00:43,157 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940544865] [2024-02-20 12:00:43,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:00:43,158 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:00:43,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:43,650 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:43,651 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:00:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940544865] [2024-02-20 12:00:43,651 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940544865] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:00:43,651 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1604330746] [2024-02-20 12:00:43,651 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-02-20 12:00:43,651 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:00:43,651 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:00:43,668 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) [2024-02-20 12:00:43,697 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-02-20 12:00:43,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:00:43,811 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 12:00:43,812 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:00:43,959 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:43,960 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:00:44,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:00:44,203 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1604330746] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:00:44,203 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:00:44,203 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 15 [2024-02-20 12:00:44,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1532346451] [2024-02-20 12:00:44,204 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:00:44,205 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-02-20 12:00:44,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:00:44,208 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-02-20 12:00:44,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-02-20 12:00:44,219 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:00:44,219 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 403 places, 4958 transitions, 339260 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) [2024-02-20 12:00:44,219 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:00:44,219 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:00:44,219 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:01:21,375 INFO L124 PetriNetUnfolderBase]: 8834/13980 cut-off events. [2024-02-20 12:01:21,375 INFO L125 PetriNetUnfolderBase]: For 6474/6474 co-relation queries the response was YES. [2024-02-20 12:01:21,399 INFO L83 FinitePrefix]: Finished finitePrefix Result has 486505 conditions, 13980 events. 8834/13980 cut-off events. For 6474/6474 co-relation queries the response was YES. Maximal size of possible extension queue 896. Compared 95639 event pairs, 46 based on Foata normal form. 0/10004 useless extension candidates. Maximal degree in co-relation 448931. Up to 13187 conditions per place. [2024-02-20 12:01:21,742 INFO L140 encePairwiseOnDemand]: 17/27 looper letters, 4446 selfloop transitions, 469 changer transitions 276/5192 dead transitions. [2024-02-20 12:01:21,742 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 428 places, 5192 transitions, 365662 flow [2024-02-20 12:01:21,743 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-02-20 12:01:21,743 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2024-02-20 12:01:21,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 304 transitions. [2024-02-20 12:01:21,744 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.43304843304843305 [2024-02-20 12:01:21,744 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 398 predicate places. [2024-02-20 12:01:21,744 INFO L507 AbstractCegarLoop]: Abstraction has has 428 places, 5192 transitions, 365662 flow [2024-02-20 12:01:21,745 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) [2024-02-20 12:01:21,745 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:01:21,745 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] [2024-02-20 12:01:21,766 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-02-20 12:01:21,958 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-02-20 12:01:21,959 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)] === [2024-02-20 12:01:21,959 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:01:21,959 INFO L85 PathProgramCache]: Analyzing trace with hash -305048576, now seen corresponding path program 11 times [2024-02-20 12:01:21,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:01:21,959 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1269869247] [2024-02-20 12:01:21,959 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:01:21,959 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:01:21,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:01:22,116 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:01:22,116 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:01:22,117 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1269869247] [2024-02-20 12:01:22,117 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1269869247] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:01:22,117 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:01:22,117 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 12:01:22,117 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330569188] [2024-02-20 12:01:22,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:01:22,117 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:01:22,118 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:01:22,118 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:01:22,118 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:01:22,124 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:01:22,125 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 428 places, 5192 transitions, 365662 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) [2024-02-20 12:01:22,125 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:01:22,125 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:01:22,125 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:03,646 INFO L124 PetriNetUnfolderBase]: 8852/14134 cut-off events. [2024-02-20 12:02:03,646 INFO L125 PetriNetUnfolderBase]: For 6697/6697 co-relation queries the response was YES. [2024-02-20 12:02:03,663 INFO L83 FinitePrefix]: Finished finitePrefix Result has 505772 conditions, 14134 events. 8852/14134 cut-off events. For 6697/6697 co-relation queries the response was YES. Maximal size of possible extension queue 915. Compared 98328 event pairs, 52 based on Foata normal form. 0/10158 useless extension candidates. Maximal degree in co-relation 466468. Up to 13335 conditions per place. [2024-02-20 12:02:04,217 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4763 selfloop transitions, 198 changer transitions 336/5298 dead transitions. [2024-02-20 12:02:04,217 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 434 places, 5298 transitions, 383800 flow [2024-02-20 12:02:04,218 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:02:04,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:02:04,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 96 transitions. [2024-02-20 12:02:04,218 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5079365079365079 [2024-02-20 12:02:04,219 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 404 predicate places. [2024-02-20 12:02:04,219 INFO L507 AbstractCegarLoop]: Abstraction has has 434 places, 5298 transitions, 383800 flow [2024-02-20 12:02:04,219 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) [2024-02-20 12:02:04,219 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:04,225 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] [2024-02-20 12:02:04,225 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2024-02-20 12:02:04,225 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)] === [2024-02-20 12:02:04,226 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:04,226 INFO L85 PathProgramCache]: Analyzing trace with hash -1633745996, now seen corresponding path program 12 times [2024-02-20 12:02:04,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:04,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [565389047] [2024-02-20 12:02:04,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:04,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:04,433 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:04,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:04,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [565389047] [2024-02-20 12:02:04,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [565389047] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:02:04,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:02:04,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 12:02:04,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927286905] [2024-02-20 12:02:04,435 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:02:04,436 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:02:04,436 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:04,436 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:02:04,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:02:04,442 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:02:04,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 434 places, 5298 transitions, 383800 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) [2024-02-20 12:02:04,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:04,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:02:04,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:02:50,650 INFO L124 PetriNetUnfolderBase]: 8859/14192 cut-off events. [2024-02-20 12:02:50,651 INFO L125 PetriNetUnfolderBase]: For 6924/6924 co-relation queries the response was YES. [2024-02-20 12:02:50,672 INFO L83 FinitePrefix]: Finished finitePrefix Result has 521972 conditions, 14192 events. 8859/14192 cut-off events. For 6924/6924 co-relation queries the response was YES. Maximal size of possible extension queue 919. Compared 99413 event pairs, 42 based on Foata normal form. 0/10216 useless extension candidates. Maximal degree in co-relation 481396. Up to 13393 conditions per place. [2024-02-20 12:02:51,040 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 4791 selfloop transitions, 167 changer transitions 385/5344 dead transitions. [2024-02-20 12:02:51,040 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 440 places, 5344 transitions, 397853 flow [2024-02-20 12:02:51,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:02:51,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:02:51,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 91 transitions. [2024-02-20 12:02:51,041 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.48148148148148145 [2024-02-20 12:02:51,041 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 410 predicate places. [2024-02-20 12:02:51,042 INFO L507 AbstractCegarLoop]: Abstraction has has 440 places, 5344 transitions, 397853 flow [2024-02-20 12:02:51,042 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) [2024-02-20 12:02:51,042 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:02:51,042 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] [2024-02-20 12:02:51,042 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2024-02-20 12:02:51,042 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)] === [2024-02-20 12:02:51,043 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:02:51,043 INFO L85 PathProgramCache]: Analyzing trace with hash -1267395711, now seen corresponding path program 20 times [2024-02-20 12:02:51,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:02:51,043 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [938772682] [2024-02-20 12:02:51,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:02:51,043 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:02:51,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:02:51,157 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:51,157 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:02:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [938772682] [2024-02-20 12:02:51,157 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [938772682] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:02:51,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [630786342] [2024-02-20 12:02:51,157 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-02-20 12:02:51,158 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:02:51,158 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:02:51,159 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) [2024-02-20 12:02:51,160 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-02-20 12:02:51,530 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:02:51,530 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:02:51,531 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 12:02:51,532 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:02:51,610 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:51,610 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:02:51,712 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:02:51,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [630786342] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:02:51,712 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:02:51,712 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 7] total 16 [2024-02-20 12:02:51,712 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491521866] [2024-02-20 12:02:51,712 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:02:51,712 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 12:02:51,713 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:02:51,713 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 12:02:51,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2024-02-20 12:02:51,727 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:02:51,727 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 440 places, 5344 transitions, 397853 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) [2024-02-20 12:02:51,727 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:02:51,727 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:02:51,727 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:03:49,840 INFO L124 PetriNetUnfolderBase]: 10816/17602 cut-off events. [2024-02-20 12:03:49,840 INFO L125 PetriNetUnfolderBase]: For 7358/7358 co-relation queries the response was YES. [2024-02-20 12:03:49,869 INFO L83 FinitePrefix]: Finished finitePrefix Result has 663837 conditions, 17602 events. 10816/17602 cut-off events. For 7358/7358 co-relation queries the response was YES. Maximal size of possible extension queue 1154. Compared 130119 event pairs, 28 based on Foata normal form. 0/12638 useless extension candidates. Maximal degree in co-relation 617728. Up to 16734 conditions per place. [2024-02-20 12:03:50,503 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 5283 selfloop transitions, 1404 changer transitions 385/7073 dead transitions. [2024-02-20 12:03:50,520 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 467 places, 7073 transitions, 540981 flow [2024-02-20 12:03:50,521 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 28 states. [2024-02-20 12:03:50,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2024-02-20 12:03:50,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 365 transitions. [2024-02-20 12:03:50,528 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4828042328042328 [2024-02-20 12:03:50,529 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 437 predicate places. [2024-02-20 12:03:50,529 INFO L507 AbstractCegarLoop]: Abstraction has has 467 places, 7073 transitions, 540981 flow [2024-02-20 12:03:50,530 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) [2024-02-20 12:03:50,530 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:03:50,530 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] [2024-02-20 12:03:50,576 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-02-20 12:03:50,742 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-02-20 12:03:50,742 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)] === [2024-02-20 12:03:50,742 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:03:50,742 INFO L85 PathProgramCache]: Analyzing trace with hash 1203165534, now seen corresponding path program 13 times [2024-02-20 12:03:50,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:03:50,743 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1169248679] [2024-02-20 12:03:50,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:03:50,743 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:03:50,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:03:50,903 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:03:50,903 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:03:50,904 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1169248679] [2024-02-20 12:03:50,904 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1169248679] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:03:50,904 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:03:50,904 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 12:03:50,904 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140192718] [2024-02-20 12:03:50,904 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:03:50,908 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:03:50,908 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:03:50,908 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:03:50,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:03:50,913 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:03:50,914 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 467 places, 7073 transitions, 540981 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) [2024-02-20 12:03:50,914 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:03:50,914 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:03:50,914 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:05:04,453 INFO L124 PetriNetUnfolderBase]: 10780/17527 cut-off events. [2024-02-20 12:05:04,453 INFO L125 PetriNetUnfolderBase]: For 7480/7480 co-relation queries the response was YES. [2024-02-20 12:05:04,472 INFO L83 FinitePrefix]: Finished finitePrefix Result has 678464 conditions, 17527 events. 10780/17527 cut-off events. For 7480/7480 co-relation queries the response was YES. Maximal size of possible extension queue 1150. Compared 129405 event pairs, 30 based on Foata normal form. 0/12593 useless extension candidates. Maximal degree in co-relation 631394. Up to 16662 conditions per place. [2024-02-20 12:05:04,983 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6453 selfloop transitions, 203 changer transitions 385/7042 dead transitions. [2024-02-20 12:05:04,983 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 473 places, 7042 transitions, 552677 flow [2024-02-20 12:05:04,983 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:05:04,984 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:05:04,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 97 transitions. [2024-02-20 12:05:04,984 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.5132275132275133 [2024-02-20 12:05:04,985 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 443 predicate places. [2024-02-20 12:05:04,985 INFO L507 AbstractCegarLoop]: Abstraction has has 473 places, 7042 transitions, 552677 flow [2024-02-20 12:05:04,985 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) [2024-02-20 12:05:04,985 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:05:04,985 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] [2024-02-20 12:05:04,985 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-02-20 12:05:04,985 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)] === [2024-02-20 12:05:04,986 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:05:04,986 INFO L85 PathProgramCache]: Analyzing trace with hash 697810073, now seen corresponding path program 5 times [2024-02-20 12:05:04,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:05:04,986 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [948227381] [2024-02-20 12:05:04,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:05:04,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:05:04,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:05:05,101 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:05,102 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:05:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [948227381] [2024-02-20 12:05:05,102 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [948227381] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:05:05,102 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006378945] [2024-02-20 12:05:05,102 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-02-20 12:05:05,103 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:05:05,103 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:05:05,105 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) [2024-02-20 12:05:05,106 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-02-20 12:05:05,246 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-02-20 12:05:05,246 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:05:05,247 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 12 conjunts are in the unsatisfiable core [2024-02-20 12:05:05,248 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:05:05,324 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:05,324 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:05:05,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:05:05,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006378945] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:05:05,446 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:05:05,446 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 8] total 17 [2024-02-20 12:05:05,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429684725] [2024-02-20 12:05:05,446 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:05:05,446 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-02-20 12:05:05,447 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:05:05,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-02-20 12:05:05,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2024-02-20 12:05:05,455 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:05:05,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 473 places, 7042 transitions, 552677 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) [2024-02-20 12:05:05,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:05:05,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:05:05,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:06:34,946 INFO L124 PetriNetUnfolderBase]: 12597/20187 cut-off events. [2024-02-20 12:06:34,947 INFO L125 PetriNetUnfolderBase]: For 8243/8243 co-relation queries the response was YES. [2024-02-20 12:06:34,983 INFO L83 FinitePrefix]: Finished finitePrefix Result has 801701 conditions, 20187 events. 12597/20187 cut-off events. For 8243/8243 co-relation queries the response was YES. Maximal size of possible extension queue 1315. Compared 148937 event pairs, 60 based on Foata normal form. 0/14299 useless extension candidates. Maximal degree in co-relation 749458. Up to 19071 conditions per place. [2024-02-20 12:06:35,777 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 6551 selfloop transitions, 993 changer transitions 385/7930 dead transitions. [2024-02-20 12:06:35,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 497 places, 7930 transitions, 638097 flow [2024-02-20 12:06:35,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2024-02-20 12:06:35,778 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2024-02-20 12:06:35,787 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 304 transitions. [2024-02-20 12:06:35,788 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.45037037037037037 [2024-02-20 12:06:35,789 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 467 predicate places. [2024-02-20 12:06:35,789 INFO L507 AbstractCegarLoop]: Abstraction has has 497 places, 7930 transitions, 638097 flow [2024-02-20 12:06:35,789 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) [2024-02-20 12:06:35,789 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:06:35,789 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] [2024-02-20 12:06:35,809 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Forceful destruction successful, exit code 0 [2024-02-20 12:06:36,005 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable38,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:06:36,005 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)] === [2024-02-20 12:06:36,005 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:06:36,006 INFO L85 PathProgramCache]: Analyzing trace with hash -840050029, now seen corresponding path program 21 times [2024-02-20 12:06:36,006 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:06:36,006 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [202177253] [2024-02-20 12:06:36,006 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:06:36,006 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:06:36,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:06:36,227 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:06:36,228 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:06:36,228 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [202177253] [2024-02-20 12:06:36,228 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [202177253] provided 1 perfect and 0 imperfect interpolant sequences [2024-02-20 12:06:36,228 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-02-20 12:06:36,228 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-02-20 12:06:36,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [31773633] [2024-02-20 12:06:36,229 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-02-20 12:06:36,229 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-02-20 12:06:36,229 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:06:36,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-02-20 12:06:36,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2024-02-20 12:06:36,236 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:06:36,236 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 497 places, 7930 transitions, 638097 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) [2024-02-20 12:06:36,236 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:06:36,236 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:06:36,237 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-02-20 12:08:32,092 INFO L124 PetriNetUnfolderBase]: 12605/20199 cut-off events. [2024-02-20 12:08:32,093 INFO L125 PetriNetUnfolderBase]: For 8117/8117 co-relation queries the response was YES. [2024-02-20 12:08:32,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 822214 conditions, 20199 events. 12605/20199 cut-off events. For 8117/8117 co-relation queries the response was YES. Maximal size of possible extension queue 1313. Compared 148955 event pairs, 60 based on Foata normal form. 0/14307 useless extension candidates. Maximal degree in co-relation 768678. Up to 19077 conditions per place. [2024-02-20 12:08:32,950 INFO L140 encePairwiseOnDemand]: 18/27 looper letters, 7318 selfloop transitions, 229 changer transitions 389/7937 dead transitions. [2024-02-20 12:08:32,951 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 503 places, 7937 transitions, 654529 flow [2024-02-20 12:08:32,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-02-20 12:08:32,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-02-20 12:08:32,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 85 transitions. [2024-02-20 12:08:32,954 INFO L543 CegarLoopForPetriNet]: DFA transition density 0.4497354497354497 [2024-02-20 12:08:32,955 INFO L308 CegarLoopForPetriNet]: 30 programPoint places, 473 predicate places. [2024-02-20 12:08:32,955 INFO L507 AbstractCegarLoop]: Abstraction has has 503 places, 7937 transitions, 654529 flow [2024-02-20 12:08:32,955 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) [2024-02-20 12:08:32,956 INFO L226 CegarLoopForPetriNet]: Found error trace [2024-02-20 12:08:32,956 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] [2024-02-20 12:08:32,956 WARN L489 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable39 [2024-02-20 12:08:32,956 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)] === [2024-02-20 12:08:32,956 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-02-20 12:08:32,956 INFO L85 PathProgramCache]: Analyzing trace with hash 1012689695, now seen corresponding path program 22 times [2024-02-20 12:08:32,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-02-20 12:08:32,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [825826189] [2024-02-20 12:08:32,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-02-20 12:08:32,958 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-02-20 12:08:32,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-02-20 12:08:33,088 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:08:33,088 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-02-20 12:08:33,088 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [825826189] [2024-02-20 12:08:33,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [825826189] provided 0 perfect and 1 imperfect interpolant sequences [2024-02-20 12:08:33,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [852257509] [2024-02-20 12:08:33,089 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-02-20 12:08:33,089 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-02-20 12:08:33,089 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-02-20 12:08:33,091 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) [2024-02-20 12:08:33,092 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-02-20 12:08:33,251 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-02-20 12:08:33,251 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-02-20 12:08:33,252 INFO L262 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 14 conjunts are in the unsatisfiable core [2024-02-20 12:08:33,253 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-02-20 12:08:33,347 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:08:33,347 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-02-20 12:08:33,463 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-02-20 12:08:33,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [852257509] provided 0 perfect and 2 imperfect interpolant sequences [2024-02-20 12:08:33,463 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-02-20 12:08:33,463 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 8, 7] total 16 [2024-02-20 12:08:33,463 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242467224] [2024-02-20 12:08:33,463 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-02-20 12:08:33,463 INFO L584 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-02-20 12:08:33,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-02-20 12:08:33,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-02-20 12:08:33,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2024-02-20 12:08:33,482 INFO L498 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 27 [2024-02-20 12:08:33,482 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 503 places, 7937 transitions, 654529 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) [2024-02-20 12:08:33,482 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-02-20 12:08:33,483 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 27 [2024-02-20 12:08:33,483 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand Killed by 15