./Ultimate.py --spec ../../../trunk/examples/svcomp/properties/unreach-call.prp --file ../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version a340643f Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerReach.xml -i ../../../trunk/examples/svcomp/weaver/chl-word-symm.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 bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e --- Real Ultimate output --- This is Ultimate 0.2.4-dev-a340643-m [2024-01-27 15:29:08,314 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-01-27 15:29:08,378 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-01-27 15:29:08,384 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-01-27 15:29:08,385 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-01-27 15:29:08,411 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-01-27 15:29:08,412 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-01-27 15:29:08,412 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-01-27 15:29:08,413 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-01-27 15:29:08,414 INFO L153 SettingsManager]: * Use memory slicer=true [2024-01-27 15:29:08,414 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-01-27 15:29:08,415 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-01-27 15:29:08,415 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-01-27 15:29:08,415 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-01-27 15:29:08,415 INFO L153 SettingsManager]: * Use SBE=true [2024-01-27 15:29:08,416 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-01-27 15:29:08,416 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-01-27 15:29:08,416 INFO L153 SettingsManager]: * sizeof long=4 [2024-01-27 15:29:08,416 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-01-27 15:29:08,417 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-01-27 15:29:08,417 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-01-27 15:29:08,417 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-01-27 15:29:08,417 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-01-27 15:29:08,418 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-01-27 15:29:08,418 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-01-27 15:29:08,418 INFO L153 SettingsManager]: * sizeof long double=12 [2024-01-27 15:29:08,418 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-01-27 15:29:08,418 INFO L153 SettingsManager]: * Use constant arrays=true [2024-01-27 15:29:08,419 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-01-27 15:29:08,419 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-01-27 15:29:08,420 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-01-27 15:29:08,420 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-01-27 15:29:08,420 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:08,420 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-01-27 15:29:08,420 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-01-27 15:29:08,421 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2024-01-27 15:29:08,422 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-01-27 15:29:08,422 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-01-27 15:29:08,422 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bf81f7b3bd1ceac2bf46c7c37f69effc0af9de17b18c7565156301fb49a6164e [2024-01-27 15:29:08,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-01-27 15:29:08,659 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-01-27 15:29:08,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-01-27 15:29:08,662 INFO L270 PluginConnector]: Initializing CDTParser... [2024-01-27 15:29:08,662 INFO L274 PluginConnector]: CDTParser initialized [2024-01-27 15:29:08,663 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2024-01-27 15:29:09,649 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-01-27 15:29:09,816 INFO L384 CDTParser]: Found 1 translation units. [2024-01-27 15:29:09,817 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c [2024-01-27 15:29:09,826 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227316839/484047da32e34094aefef7c54370ed8f/FLAG5f09aa7e3 [2024-01-27 15:29:09,841 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/227316839/484047da32e34094aefef7c54370ed8f [2024-01-27 15:29:09,844 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-01-27 15:29:09,845 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-01-27 15:29:09,847 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:09,847 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-01-27 15:29:09,851 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-01-27 15:29:09,851 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:09" (1/1) ... [2024-01-27 15:29:09,852 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6658c644 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:09, skipping insertion in model container [2024-01-27 15:29:09,852 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.01 03:29:09" (1/1) ... [2024-01-27 15:29:09,873 INFO L177 MainTranslator]: Built tables and reachable declarations [2024-01-27 15:29:10,023 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2874,2887] [2024-01-27 15:29:10,029 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:10,036 INFO L202 MainTranslator]: Completed pre-run [2024-01-27 15:29:10,055 WARN L239 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/weaver/chl-word-symm.wvr.c[2874,2887] [2024-01-27 15:29:10,058 INFO L209 PostProcessor]: Analyzing one entry point: main [2024-01-27 15:29:10,070 INFO L206 MainTranslator]: Completed translation [2024-01-27 15:29:10,070 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10 WrapperNode [2024-01-27 15:29:10,071 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-01-27 15:29:10,072 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:10,072 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-01-27 15:29:10,072 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-01-27 15:29:10,077 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,095 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,111 INFO L138 Inliner]: procedures = 24, calls = 35, calls flagged for inlining = 9, calls inlined = 11, statements flattened = 135 [2024-01-27 15:29:10,112 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-01-27 15:29:10,114 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-01-27 15:29:10,115 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-01-27 15:29:10,115 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-01-27 15:29:10,127 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,127 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,129 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,147 INFO L175 MemorySlicer]: Split 16 memory accesses to 4 slices as follows [2, 2, 10, 2]. 63 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 4 writes are split as follows [0, 1, 2, 1]. [2024-01-27 15:29:10,147 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,148 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,154 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,157 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,159 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,160 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,162 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-01-27 15:29:10,163 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-01-27 15:29:10,163 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-01-27 15:29:10,163 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-01-27 15:29:10,165 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (1/1) ... [2024-01-27 15:29:10,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-01-27 15:29:10,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:10,242 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-01-27 15:29:10,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-01-27 15:29:10,325 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-01-27 15:29:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-01-27 15:29:10,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-01-27 15:29:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-01-27 15:29:10,326 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-01-27 15:29:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-01-27 15:29:10,326 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-01-27 15:29:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-01-27 15:29:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-01-27 15:29:10,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-01-27 15:29:10,329 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-01-27 15:29:10,330 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-01-27 15:29:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-01-27 15:29:10,330 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-01-27 15:29:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-01-27 15:29:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-01-27 15:29:10,331 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-01-27 15:29:10,334 WARN L214 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement [2024-01-27 15:29:10,432 INFO L244 CfgBuilder]: Building ICFG [2024-01-27 15:29:10,434 INFO L270 CfgBuilder]: Building CFG for each procedure with an implementation [2024-01-27 15:29:10,717 INFO L289 CfgBuilder]: Ommited future-live optimization because the input is a concurrent program. [2024-01-27 15:29:10,717 INFO L293 CfgBuilder]: Performing block encoding [2024-01-27 15:29:10,881 INFO L315 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-01-27 15:29:10,881 INFO L320 CfgBuilder]: Removed 4 assume(true) statements. [2024-01-27 15:29:10,882 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:10 BoogieIcfgContainer [2024-01-27 15:29:10,882 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-01-27 15:29:10,884 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-01-27 15:29:10,884 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-01-27 15:29:10,887 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-01-27 15:29:10,887 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.01 03:29:09" (1/3) ... [2024-01-27 15:29:10,888 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4e509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:10, skipping insertion in model container [2024-01-27 15:29:10,888 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.01 03:29:10" (2/3) ... [2024-01-27 15:29:10,889 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ed4e509 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.01 03:29:10, skipping insertion in model container [2024-01-27 15:29:10,889 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.01 03:29:10" (3/3) ... [2024-01-27 15:29:10,890 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-word-symm.wvr.c [2024-01-27 15:29:10,914 WARN L146 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2024-01-27 15:29:10,922 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-01-27 15:29:10,922 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-01-27 15:29:10,922 INFO L518 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-01-27 15:29:10,972 INFO L144 ThreadInstanceAdder]: Constructed 2 joinOtherThreadTransitions. [2024-01-27 15:29:11,006 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 35 transitions, 84 flow [2024-01-27 15:29:11,026 INFO L124 PetriNetUnfolderBase]: 8/33 cut-off events. [2024-01-27 15:29:11,026 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:29:11,029 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42 conditions, 33 events. 8/33 cut-off events. For 2/2 co-relation queries the response was YES. Maximal size of possible extension queue 5. Compared 44 event pairs, 0 based on Foata normal form. 0/24 useless extension candidates. Maximal degree in co-relation 23. Up to 2 conditions per place. [2024-01-27 15:29:11,029 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 35 transitions, 84 flow [2024-01-27 15:29:11,034 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 31 places, 32 transitions, 76 flow [2024-01-27 15:29:11,044 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-01-27 15:29:11,053 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopHeads, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@50f80134, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-01-27 15:29:11,053 INFO L358 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2024-01-27 15:29:11,061 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-01-27 15:29:11,062 INFO L124 PetriNetUnfolderBase]: 8/31 cut-off events. [2024-01-27 15:29:11,062 INFO L125 PetriNetUnfolderBase]: For 2/2 co-relation queries the response was YES. [2024-01-27 15:29:11,062 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:11,063 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:11,063 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:11,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:11,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1731729370, now seen corresponding path program 1 times [2024-01-27 15:29:11,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:11,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1327711905] [2024-01-27 15:29:11,078 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:11,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:11,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:11,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:11,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:11,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1327711905] [2024-01-27 15:29:11,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1327711905] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:11,597 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:11,597 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:11,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191336516] [2024-01-27 15:29:11,599 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:11,605 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:11,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:11,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:11,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:11,633 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:11,634 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 31 places, 32 transitions, 76 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,635 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:11,635 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:11,635 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:11,884 INFO L124 PetriNetUnfolderBase]: 282/462 cut-off events. [2024-01-27 15:29:11,885 INFO L125 PetriNetUnfolderBase]: For 33/33 co-relation queries the response was YES. [2024-01-27 15:29:11,887 INFO L83 FinitePrefix]: Finished finitePrefix Result has 956 conditions, 462 events. 282/462 cut-off events. For 33/33 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 1568 event pairs, 144 based on Foata normal form. 1/357 useless extension candidates. Maximal degree in co-relation 824. Up to 358 conditions per place. [2024-01-27 15:29:11,891 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 42 selfloop transitions, 1 changer transitions 8/52 dead transitions. [2024-01-27 15:29:11,892 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 52 transitions, 230 flow [2024-01-27 15:29:11,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:11,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:11,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 65 transitions. [2024-01-27 15:29:11,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4642857142857143 [2024-01-27 15:29:11,903 INFO L175 Difference]: Start difference. First operand has 31 places, 32 transitions, 76 flow. Second operand 4 states and 65 transitions. [2024-01-27 15:29:11,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 52 transitions, 230 flow [2024-01-27 15:29:11,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 52 transitions, 214 flow, removed 0 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:11,909 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 77 flow [2024-01-27 15:29:11,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=68, PETRI_DIFFERENCE_MINUEND_PLACES=27, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=77, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-01-27 15:29:11,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 1 predicate places. [2024-01-27 15:29:11,916 INFO L495 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 77 flow [2024-01-27 15:29:11,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:11,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:11,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:11,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-01-27 15:29:11,918 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:11,919 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:11,919 INFO L85 PathProgramCache]: Analyzing trace with hash -1419590832, now seen corresponding path program 2 times [2024-01-27 15:29:11,919 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:11,919 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1573173167] [2024-01-27 15:29:11,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:11,920 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:11,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:12,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:12,146 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:12,146 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1573173167] [2024-01-27 15:29:12,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1573173167] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:12,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:12,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:12,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1374375787] [2024-01-27 15:29:12,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:12,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-01-27 15:29:12,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:12,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-01-27 15:29:12,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-01-27 15:29:12,151 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:12,152 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 77 flow. Second operand has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,152 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:12,152 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:12,152 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:12,341 INFO L124 PetriNetUnfolderBase]: 328/557 cut-off events. [2024-01-27 15:29:12,341 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-01-27 15:29:12,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1183 conditions, 557 events. 328/557 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 38. Compared 2099 event pairs, 182 based on Foata normal form. 7/462 useless extension candidates. Maximal degree in co-relation 1166. Up to 422 conditions per place. [2024-01-27 15:29:12,346 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 42 selfloop transitions, 1 changer transitions 10/54 dead transitions. [2024-01-27 15:29:12,346 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 54 transitions, 237 flow [2024-01-27 15:29:12,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-01-27 15:29:12,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-01-27 15:29:12,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 67 transitions. [2024-01-27 15:29:12,349 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4785714285714286 [2024-01-27 15:29:12,349 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 77 flow. Second operand 4 states and 67 transitions. [2024-01-27 15:29:12,350 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 54 transitions, 237 flow [2024-01-27 15:29:12,351 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 54 transitions, 231 flow, removed 2 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:12,354 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 83 flow [2024-01-27 15:29:12,354 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=74, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=31, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=83, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-01-27 15:29:12,355 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-01-27 15:29:12,355 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 83 flow [2024-01-27 15:29:12,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 7.25) internal successors, (29), 4 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,357 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:12,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:12,359 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-01-27 15:29:12,359 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:12,361 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:12,361 INFO L85 PathProgramCache]: Analyzing trace with hash 1626241867, now seen corresponding path program 1 times [2024-01-27 15:29:12,362 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:12,362 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [535337638] [2024-01-27 15:29:12,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:12,362 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:12,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:12,403 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:12,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:12,404 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [535337638] [2024-01-27 15:29:12,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [535337638] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:12,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:12,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-01-27 15:29:12,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881695642] [2024-01-27 15:29:12,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:12,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-01-27 15:29:12,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:12,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-01-27 15:29:12,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-01-27 15:29:12,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:12,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 83 flow. Second operand has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,407 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:12,407 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:12,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:12,486 INFO L124 PetriNetUnfolderBase]: 232/388 cut-off events. [2024-01-27 15:29:12,487 INFO L125 PetriNetUnfolderBase]: For 161/161 co-relation queries the response was YES. [2024-01-27 15:29:12,487 INFO L83 FinitePrefix]: Finished finitePrefix Result has 844 conditions, 388 events. 232/388 cut-off events. For 161/161 co-relation queries the response was YES. Maximal size of possible extension queue 22. Compared 1231 event pairs, 79 based on Foata normal form. 22/344 useless extension candidates. Maximal degree in co-relation 834. Up to 317 conditions per place. [2024-01-27 15:29:12,488 INFO L140 encePairwiseOnDemand]: 31/35 looper letters, 34 selfloop transitions, 2 changer transitions 6/43 dead transitions. [2024-01-27 15:29:12,489 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 35 places, 43 transitions, 195 flow [2024-01-27 15:29:12,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-01-27 15:29:12,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-01-27 15:29:12,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 53 transitions. [2024-01-27 15:29:12,491 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.5047619047619047 [2024-01-27 15:29:12,491 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 83 flow. Second operand 3 states and 53 transitions. [2024-01-27 15:29:12,491 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 35 places, 43 transitions, 195 flow [2024-01-27 15:29:12,492 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 43 transitions, 192 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:12,493 INFO L231 Difference]: Finished difference. Result has 34 places, 32 transitions, 86 flow [2024-01-27 15:29:12,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=80, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=86, PETRI_PLACES=34, PETRI_TRANSITIONS=32} [2024-01-27 15:29:12,494 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 3 predicate places. [2024-01-27 15:29:12,494 INFO L495 AbstractCegarLoop]: Abstraction has has 34 places, 32 transitions, 86 flow [2024-01-27 15:29:12,495 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 9.333333333333334) internal successors, (28), 3 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,495 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:12,495 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:12,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-01-27 15:29:12,495 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:12,496 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:12,496 INFO L85 PathProgramCache]: Analyzing trace with hash -356678929, now seen corresponding path program 1 times [2024-01-27 15:29:12,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:12,496 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [603434307] [2024-01-27 15:29:12,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:12,497 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:12,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:12,750 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:12,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:12,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [603434307] [2024-01-27 15:29:12,754 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [603434307] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:12,754 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:12,754 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:12,754 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939770565] [2024-01-27 15:29:12,754 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:12,755 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-01-27 15:29:12,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:12,757 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-01-27 15:29:12,758 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2024-01-27 15:29:12,758 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:12,758 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 32 transitions, 86 flow. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,758 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:12,758 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:12,758 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:12,904 INFO L124 PetriNetUnfolderBase]: 456/738 cut-off events. [2024-01-27 15:29:12,904 INFO L125 PetriNetUnfolderBase]: For 179/179 co-relation queries the response was YES. [2024-01-27 15:29:12,905 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1653 conditions, 738 events. 456/738 cut-off events. For 179/179 co-relation queries the response was YES. Maximal size of possible extension queue 41. Compared 2692 event pairs, 200 based on Foata normal form. 1/599 useless extension candidates. Maximal degree in co-relation 606. Up to 304 conditions per place. [2024-01-27 15:29:12,908 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 65 selfloop transitions, 11 changer transitions 1/78 dead transitions. [2024-01-27 15:29:12,908 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 78 transitions, 363 flow [2024-01-27 15:29:12,908 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:12,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:12,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 92 transitions. [2024-01-27 15:29:12,911 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4380952380952381 [2024-01-27 15:29:12,911 INFO L175 Difference]: Start difference. First operand has 34 places, 32 transitions, 86 flow. Second operand 6 states and 92 transitions. [2024-01-27 15:29:12,911 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 78 transitions, 363 flow [2024-01-27 15:29:12,914 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 35 places, 78 transitions, 343 flow, removed 10 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:12,915 INFO L231 Difference]: Finished difference. Result has 39 places, 42 transitions, 153 flow [2024-01-27 15:29:12,915 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=153, PETRI_PLACES=39, PETRI_TRANSITIONS=42} [2024-01-27 15:29:12,916 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 8 predicate places. [2024-01-27 15:29:12,916 INFO L495 AbstractCegarLoop]: Abstraction has has 39 places, 42 transitions, 153 flow [2024-01-27 15:29:12,916 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 6 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:12,917 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:12,917 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:12,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-01-27 15:29:12,917 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:12,918 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:12,918 INFO L85 PathProgramCache]: Analyzing trace with hash -1802949554, now seen corresponding path program 1 times [2024-01-27 15:29:12,918 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:12,918 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855815866] [2024-01-27 15:29:12,918 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:12,918 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:12,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:13,220 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:13,220 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:13,220 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855815866] [2024-01-27 15:29:13,221 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855815866] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:13,221 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [761031866] [2024-01-27 15:29:13,221 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:13,221 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:13,221 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:13,223 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) [2024-01-27 15:29:13,248 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-01-27 15:29:13,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:13,318 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 15:29:13,323 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:13,619 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:13,619 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:14,251 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:14,251 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [761031866] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:14,251 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:14,252 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-01-27 15:29:14,252 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1842794901] [2024-01-27 15:29:14,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:14,252 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:14,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:14,253 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:14,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=514, Unknown=0, NotChecked=0, Total=650 [2024-01-27 15:29:14,253 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:14,254 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 42 transitions, 153 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,254 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:14,254 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:14,254 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:14,867 INFO L124 PetriNetUnfolderBase]: 1146/1908 cut-off events. [2024-01-27 15:29:14,868 INFO L125 PetriNetUnfolderBase]: For 294/294 co-relation queries the response was YES. [2024-01-27 15:29:14,870 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4655 conditions, 1908 events. 1146/1908 cut-off events. For 294/294 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 9515 event pairs, 130 based on Foata normal form. 1/1732 useless extension candidates. Maximal degree in co-relation 3174. Up to 383 conditions per place. [2024-01-27 15:29:14,875 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 140 selfloop transitions, 44 changer transitions 8/193 dead transitions. [2024-01-27 15:29:14,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 193 transitions, 996 flow [2024-01-27 15:29:14,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:29:14,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:29:14,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 207 transitions. [2024-01-27 15:29:14,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.45494505494505494 [2024-01-27 15:29:14,880 INFO L175 Difference]: Start difference. First operand has 39 places, 42 transitions, 153 flow. Second operand 13 states and 207 transitions. [2024-01-27 15:29:14,880 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 193 transitions, 996 flow [2024-01-27 15:29:14,882 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 51 places, 193 transitions, 992 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-01-27 15:29:14,885 INFO L231 Difference]: Finished difference. Result has 60 places, 76 transitions, 493 flow [2024-01-27 15:29:14,885 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=149, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=23, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=493, PETRI_PLACES=60, PETRI_TRANSITIONS=76} [2024-01-27 15:29:14,886 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 29 predicate places. [2024-01-27 15:29:14,887 INFO L495 AbstractCegarLoop]: Abstraction has has 60 places, 76 transitions, 493 flow [2024-01-27 15:29:14,887 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:14,887 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:14,887 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:14,903 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:15,092 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:15,092 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:15,093 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:15,093 INFO L85 PathProgramCache]: Analyzing trace with hash 1406322494, now seen corresponding path program 1 times [2024-01-27 15:29:15,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:15,093 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1925796109] [2024-01-27 15:29:15,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:15,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:15,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,164 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:15,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1925796109] [2024-01-27 15:29:15,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1925796109] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:15,165 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:15,165 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:15,165 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1249317743] [2024-01-27 15:29:15,165 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:15,166 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:15,166 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:15,166 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:15,166 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:15,166 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:15,167 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 60 places, 76 transitions, 493 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-01-27 15:29:15,167 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:15,167 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:15,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:15,397 INFO L124 PetriNetUnfolderBase]: 1224/2100 cut-off events. [2024-01-27 15:29:15,397 INFO L125 PetriNetUnfolderBase]: For 2589/2589 co-relation queries the response was YES. [2024-01-27 15:29:15,401 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6413 conditions, 2100 events. 1224/2100 cut-off events. For 2589/2589 co-relation queries the response was YES. Maximal size of possible extension queue 117. Compared 10992 event pairs, 719 based on Foata normal form. 0/1942 useless extension candidates. Maximal degree in co-relation 6360. Up to 1211 conditions per place. [2024-01-27 15:29:15,407 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 104 selfloop transitions, 11 changer transitions 6/122 dead transitions. [2024-01-27 15:29:15,408 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 64 places, 122 transitions, 951 flow [2024-01-27 15:29:15,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:15,408 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:15,409 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 86 transitions. [2024-01-27 15:29:15,409 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-01-27 15:29:15,409 INFO L175 Difference]: Start difference. First operand has 60 places, 76 transitions, 493 flow. Second operand 6 states and 86 transitions. [2024-01-27 15:29:15,409 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 64 places, 122 transitions, 951 flow [2024-01-27 15:29:15,417 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 122 transitions, 936 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:15,419 INFO L231 Difference]: Finished difference. Result has 64 places, 73 transitions, 498 flow [2024-01-27 15:29:15,419 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=448, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=61, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=498, PETRI_PLACES=64, PETRI_TRANSITIONS=73} [2024-01-27 15:29:15,420 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 33 predicate places. [2024-01-27 15:29:15,420 INFO L495 AbstractCegarLoop]: Abstraction has has 64 places, 73 transitions, 498 flow [2024-01-27 15:29:15,422 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-01-27 15:29:15,422 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:15,422 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:15,422 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-01-27 15:29:15,424 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:15,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1670418632, now seen corresponding path program 1 times [2024-01-27 15:29:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:15,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198094741] [2024-01-27 15:29:15,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:15,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:15,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,501 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:15,502 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,502 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198094741] [2024-01-27 15:29:15,502 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198094741] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:15,502 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:15,502 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-01-27 15:29:15,502 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1696997395] [2024-01-27 15:29:15,503 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:15,503 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:15,503 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:15,504 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:15,504 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:15,504 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:15,504 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 73 transitions, 498 flow. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-01-27 15:29:15,505 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:15,505 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:15,505 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:15,670 INFO L124 PetriNetUnfolderBase]: 975/1711 cut-off events. [2024-01-27 15:29:15,670 INFO L125 PetriNetUnfolderBase]: For 2711/2711 co-relation queries the response was YES. [2024-01-27 15:29:15,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5451 conditions, 1711 events. 975/1711 cut-off events. For 2711/2711 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 8789 event pairs, 586 based on Foata normal form. 0/1647 useless extension candidates. Maximal degree in co-relation 4540. Up to 1211 conditions per place. [2024-01-27 15:29:15,680 INFO L140 encePairwiseOnDemand]: 27/35 looper letters, 83 selfloop transitions, 8 changer transitions 9/101 dead transitions. [2024-01-27 15:29:15,680 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 69 places, 101 transitions, 808 flow [2024-01-27 15:29:15,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-01-27 15:29:15,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-01-27 15:29:15,681 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 80 transitions. [2024-01-27 15:29:15,681 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.38095238095238093 [2024-01-27 15:29:15,681 INFO L175 Difference]: Start difference. First operand has 64 places, 73 transitions, 498 flow. Second operand 6 states and 80 transitions. [2024-01-27 15:29:15,681 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 69 places, 101 transitions, 808 flow [2024-01-27 15:29:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 66 places, 101 transitions, 798 flow, removed 1 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:15,690 INFO L231 Difference]: Finished difference. Result has 68 places, 68 transitions, 463 flow [2024-01-27 15:29:15,690 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=436, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=67, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=59, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=463, PETRI_PLACES=68, PETRI_TRANSITIONS=68} [2024-01-27 15:29:15,691 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 37 predicate places. [2024-01-27 15:29:15,691 INFO L495 AbstractCegarLoop]: Abstraction has has 68 places, 68 transitions, 463 flow [2024-01-27 15:29:15,691 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 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) [2024-01-27 15:29:15,691 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:15,691 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:15,691 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-01-27 15:29:15,692 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:15,692 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:15,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1382740184, now seen corresponding path program 2 times [2024-01-27 15:29:15,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:15,692 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446427169] [2024-01-27 15:29:15,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:15,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:15,894 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:15,894 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:15,894 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446427169] [2024-01-27 15:29:15,894 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446427169] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:15,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [28720023] [2024-01-27 15:29:15,895 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:15,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:15,895 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:15,896 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) [2024-01-27 15:29:15,918 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-01-27 15:29:15,973 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:15,973 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:15,975 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:15,976 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:16,176 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:16,176 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:16,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [28720023] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:16,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:16,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-01-27 15:29:16,177 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857353076] [2024-01-27 15:29:16,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:16,177 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:16,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:16,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:16,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:29:16,178 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:16,178 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 68 places, 68 transitions, 463 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:16,178 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:16,178 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:16,178 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:16,433 INFO L124 PetriNetUnfolderBase]: 849/1455 cut-off events. [2024-01-27 15:29:16,433 INFO L125 PetriNetUnfolderBase]: For 2685/2685 co-relation queries the response was YES. [2024-01-27 15:29:16,437 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4916 conditions, 1455 events. 849/1455 cut-off events. For 2685/2685 co-relation queries the response was YES. Maximal size of possible extension queue 80. Compared 6914 event pairs, 169 based on Foata normal form. 1/1454 useless extension candidates. Maximal degree in co-relation 4871. Up to 906 conditions per place. [2024-01-27 15:29:16,441 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 96 selfloop transitions, 28 changer transitions 8/133 dead transitions. [2024-01-27 15:29:16,441 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 75 places, 133 transitions, 992 flow [2024-01-27 15:29:16,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:16,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:16,442 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-01-27 15:29:16,442 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158730158730159 [2024-01-27 15:29:16,442 INFO L175 Difference]: Start difference. First operand has 68 places, 68 transitions, 463 flow. Second operand 9 states and 131 transitions. [2024-01-27 15:29:16,442 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 75 places, 133 transitions, 992 flow [2024-01-27 15:29:16,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 70 places, 133 transitions, 958 flow, removed 11 selfloop flow, removed 5 redundant places. [2024-01-27 15:29:16,454 INFO L231 Difference]: Finished difference. Result has 74 places, 73 transitions, 551 flow [2024-01-27 15:29:16,454 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=431, PETRI_DIFFERENCE_MINUEND_PLACES=62, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=68, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=551, PETRI_PLACES=74, PETRI_TRANSITIONS=73} [2024-01-27 15:29:16,455 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 43 predicate places. [2024-01-27 15:29:16,456 INFO L495 AbstractCegarLoop]: Abstraction has has 74 places, 73 transitions, 551 flow [2024-01-27 15:29:16,456 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:16,456 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:16,456 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:16,483 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:16,670 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-01-27 15:29:16,670 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:16,671 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:16,671 INFO L85 PathProgramCache]: Analyzing trace with hash 1433190095, now seen corresponding path program 1 times [2024-01-27 15:29:16,671 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:16,671 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1060684051] [2024-01-27 15:29:16,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:16,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:16,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:16,838 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:16,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1060684051] [2024-01-27 15:29:16,839 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1060684051] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:16,839 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918963627] [2024-01-27 15:29:16,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:16,839 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:16,839 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:16,840 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) [2024-01-27 15:29:16,849 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-01-27 15:29:16,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:16,935 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 15:29:16,937 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:17,152 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:17,153 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:17,682 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:17,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918963627] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:17,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:17,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9, 8] total 23 [2024-01-27 15:29:17,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450647786] [2024-01-27 15:29:17,683 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:17,683 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:17,683 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:17,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:17,684 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=440, Unknown=0, NotChecked=0, Total=552 [2024-01-27 15:29:17,684 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:17,684 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 73 transitions, 551 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:17,684 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:17,684 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:17,684 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:18,237 INFO L124 PetriNetUnfolderBase]: 930/1632 cut-off events. [2024-01-27 15:29:18,237 INFO L125 PetriNetUnfolderBase]: For 3538/3538 co-relation queries the response was YES. [2024-01-27 15:29:18,241 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5645 conditions, 1632 events. 930/1632 cut-off events. For 3538/3538 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8353 event pairs, 211 based on Foata normal form. 1/1631 useless extension candidates. Maximal degree in co-relation 5590. Up to 838 conditions per place. [2024-01-27 15:29:18,247 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 118 selfloop transitions, 29 changer transitions 10/158 dead transitions. [2024-01-27 15:29:18,247 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 85 places, 158 transitions, 1226 flow [2024-01-27 15:29:18,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:29:18,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:29:18,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 165 transitions. [2024-01-27 15:29:18,249 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3626373626373626 [2024-01-27 15:29:18,249 INFO L175 Difference]: Start difference. First operand has 74 places, 73 transitions, 551 flow. Second operand 13 states and 165 transitions. [2024-01-27 15:29:18,249 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 85 places, 158 transitions, 1226 flow [2024-01-27 15:29:18,258 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 81 places, 158 transitions, 1169 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:18,260 INFO L231 Difference]: Finished difference. Result has 88 places, 80 transitions, 655 flow [2024-01-27 15:29:18,260 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=506, PETRI_DIFFERENCE_MINUEND_PLACES=69, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=73, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=22, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=655, PETRI_PLACES=88, PETRI_TRANSITIONS=80} [2024-01-27 15:29:18,261 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 57 predicate places. [2024-01-27 15:29:18,261 INFO L495 AbstractCegarLoop]: Abstraction has has 88 places, 80 transitions, 655 flow [2024-01-27 15:29:18,261 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:18,261 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:18,261 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:18,275 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:18,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:18,475 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:18,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:18,475 INFO L85 PathProgramCache]: Analyzing trace with hash 755538932, now seen corresponding path program 3 times [2024-01-27 15:29:18,476 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:18,476 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1757769998] [2024-01-27 15:29:18,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:18,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:18,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:18,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:18,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1757769998] [2024-01-27 15:29:18,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1757769998] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:18,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [306136741] [2024-01-27 15:29:18,695 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:18,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:18,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:18,696 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) [2024-01-27 15:29:18,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-01-27 15:29:18,773 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:18,773 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:18,774 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:18,776 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:18,977 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:18,978 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:18,978 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [306136741] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:18,978 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:18,978 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-01-27 15:29:18,978 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [664978937] [2024-01-27 15:29:18,978 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:18,979 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:18,979 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:18,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:18,980 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:29:18,980 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:18,980 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 88 places, 80 transitions, 655 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:18,980 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:18,980 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:18,981 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:19,279 INFO L124 PetriNetUnfolderBase]: 900/1569 cut-off events. [2024-01-27 15:29:19,279 INFO L125 PetriNetUnfolderBase]: For 4323/4323 co-relation queries the response was YES. [2024-01-27 15:29:19,283 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5614 conditions, 1569 events. 900/1569 cut-off events. For 4323/4323 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7855 event pairs, 204 based on Foata normal form. 1/1568 useless extension candidates. Maximal degree in co-relation 5557. Up to 1004 conditions per place. [2024-01-27 15:29:19,289 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 100 selfloop transitions, 30 changer transitions 8/139 dead transitions. [2024-01-27 15:29:19,289 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 95 places, 139 transitions, 1154 flow [2024-01-27 15:29:19,290 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:19,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:19,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 131 transitions. [2024-01-27 15:29:19,291 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4158730158730159 [2024-01-27 15:29:19,291 INFO L175 Difference]: Start difference. First operand has 88 places, 80 transitions, 655 flow. Second operand 9 states and 131 transitions. [2024-01-27 15:29:19,291 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 95 places, 139 transitions, 1154 flow [2024-01-27 15:29:19,302 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 139 transitions, 1083 flow, removed 13 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:19,304 INFO L231 Difference]: Finished difference. Result has 90 places, 79 transitions, 636 flow [2024-01-27 15:29:19,304 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=584, PETRI_DIFFERENCE_MINUEND_PLACES=81, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=80, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=50, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=636, PETRI_PLACES=90, PETRI_TRANSITIONS=79} [2024-01-27 15:29:19,305 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 59 predicate places. [2024-01-27 15:29:19,305 INFO L495 AbstractCegarLoop]: Abstraction has has 90 places, 79 transitions, 636 flow [2024-01-27 15:29:19,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:19,305 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:19,306 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:19,319 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:19,516 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:19,517 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:19,517 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:19,517 INFO L85 PathProgramCache]: Analyzing trace with hash -1781017511, now seen corresponding path program 2 times [2024-01-27 15:29:19,518 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:19,518 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891970886] [2024-01-27 15:29:19,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:19,519 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:19,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:19,711 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:19,712 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:19,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891970886] [2024-01-27 15:29:19,712 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891970886] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:19,712 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1453790154] [2024-01-27 15:29:19,712 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:19,712 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:19,712 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:19,713 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) [2024-01-27 15:29:19,717 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-01-27 15:29:19,786 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:19,787 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:19,788 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:19,789 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:19,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:19,975 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:19,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1453790154] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:19,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:19,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-01-27 15:29:19,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062788076] [2024-01-27 15:29:19,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:19,976 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:19,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:19,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:19,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-01-27 15:29:19,977 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:19,977 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 90 places, 79 transitions, 636 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:19,977 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:19,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:19,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:20,252 INFO L124 PetriNetUnfolderBase]: 896/1565 cut-off events. [2024-01-27 15:29:20,253 INFO L125 PetriNetUnfolderBase]: For 4141/4141 co-relation queries the response was YES. [2024-01-27 15:29:20,280 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5559 conditions, 1565 events. 896/1565 cut-off events. For 4141/4141 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7816 event pairs, 237 based on Foata normal form. 1/1564 useless extension candidates. Maximal degree in co-relation 5503. Up to 1002 conditions per place. [2024-01-27 15:29:20,285 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 86 selfloop transitions, 27 changer transitions 13/127 dead transitions. [2024-01-27 15:29:20,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 127 transitions, 1111 flow [2024-01-27 15:29:20,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:20,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:20,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-01-27 15:29:20,286 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-01-27 15:29:20,286 INFO L175 Difference]: Start difference. First operand has 90 places, 79 transitions, 636 flow. Second operand 9 states and 114 transitions. [2024-01-27 15:29:20,287 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 127 transitions, 1111 flow [2024-01-27 15:29:20,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 127 transitions, 1043 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:20,298 INFO L231 Difference]: Finished difference. Result has 94 places, 81 transitions, 678 flow [2024-01-27 15:29:20,299 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=572, PETRI_DIFFERENCE_MINUEND_PLACES=82, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=79, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=678, PETRI_PLACES=94, PETRI_TRANSITIONS=81} [2024-01-27 15:29:20,299 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 63 predicate places. [2024-01-27 15:29:20,299 INFO L495 AbstractCegarLoop]: Abstraction has has 94 places, 81 transitions, 678 flow [2024-01-27 15:29:20,299 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:20,299 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:20,300 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:20,316 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:20,510 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-01-27 15:29:20,511 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:20,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:20,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1827868238, now seen corresponding path program 4 times [2024-01-27 15:29:20,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:20,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [921239511] [2024-01-27 15:29:20,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:20,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:20,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:20,694 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:20,694 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:20,694 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [921239511] [2024-01-27 15:29:20,694 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [921239511] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:20,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1092243009] [2024-01-27 15:29:20,695 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:29:20,695 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:20,695 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:20,696 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) [2024-01-27 15:29:20,712 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-01-27 15:29:20,770 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:29:20,770 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:20,771 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 15:29:20,773 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:20,986 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:20,986 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:21,327 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1092243009] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:21,327 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:21,327 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-01-27 15:29:21,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [516490850] [2024-01-27 15:29:21,327 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:21,327 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:21,328 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:21,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:21,328 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-01-27 15:29:21,328 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:21,329 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 94 places, 81 transitions, 678 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,329 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:21,329 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:21,329 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:21,782 INFO L124 PetriNetUnfolderBase]: 866/1502 cut-off events. [2024-01-27 15:29:21,782 INFO L125 PetriNetUnfolderBase]: For 3981/3981 co-relation queries the response was YES. [2024-01-27 15:29:21,787 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5514 conditions, 1502 events. 866/1502 cut-off events. For 3981/3981 co-relation queries the response was YES. Maximal size of possible extension queue 87. Compared 7392 event pairs, 194 based on Foata normal form. 1/1501 useless extension candidates. Maximal degree in co-relation 5405. Up to 435 conditions per place. [2024-01-27 15:29:21,792 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 127 selfloop transitions, 34 changer transitions 9/171 dead transitions. [2024-01-27 15:29:21,793 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 104 places, 171 transitions, 1396 flow [2024-01-27 15:29:21,793 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:29:21,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:29:21,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 172 transitions. [2024-01-27 15:29:21,794 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4095238095238095 [2024-01-27 15:29:21,794 INFO L175 Difference]: Start difference. First operand has 94 places, 81 transitions, 678 flow. Second operand 12 states and 172 transitions. [2024-01-27 15:29:21,794 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 104 places, 171 transitions, 1396 flow [2024-01-27 15:29:21,804 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 171 transitions, 1318 flow, removed 9 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:21,806 INFO L231 Difference]: Finished difference. Result has 101 places, 82 transitions, 698 flow [2024-01-27 15:29:21,806 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=604, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=81, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=33, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=698, PETRI_PLACES=101, PETRI_TRANSITIONS=82} [2024-01-27 15:29:21,807 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-01-27 15:29:21,807 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 82 transitions, 698 flow [2024-01-27 15:29:21,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:21,807 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:21,807 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:21,819 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:22,009 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:22,010 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:22,010 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:22,010 INFO L85 PathProgramCache]: Analyzing trace with hash 353362970, now seen corresponding path program 5 times [2024-01-27 15:29:22,010 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:22,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426448892] [2024-01-27 15:29:22,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:22,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:22,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:22,182 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:22,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426448892] [2024-01-27 15:29:22,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426448892] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:22,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [713377008] [2024-01-27 15:29:22,183 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:29:22,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:22,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:22,185 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) [2024-01-27 15:29:22,205 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-01-27 15:29:22,262 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:29:22,262 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:22,263 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 15:29:22,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:22,481 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:22,481 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:22,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:22,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [713377008] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:22,976 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:22,976 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [9, 9] total 25 [2024-01-27 15:29:22,976 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2133019728] [2024-01-27 15:29:22,976 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:22,977 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:22,977 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:22,977 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:22,977 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=133, Invalid=517, Unknown=0, NotChecked=0, Total=650 [2024-01-27 15:29:22,978 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:22,978 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 82 transitions, 698 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:22,978 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:22,978 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:22,978 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:23,548 INFO L124 PetriNetUnfolderBase]: 937/1651 cut-off events. [2024-01-27 15:29:23,549 INFO L125 PetriNetUnfolderBase]: For 4998/4998 co-relation queries the response was YES. [2024-01-27 15:29:23,554 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5982 conditions, 1651 events. 937/1651 cut-off events. For 4998/4998 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 8395 event pairs, 188 based on Foata normal form. 1/1650 useless extension candidates. Maximal degree in co-relation 5918. Up to 435 conditions per place. [2024-01-27 15:29:23,559 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 144 selfloop transitions, 38 changer transitions 10/193 dead transitions. [2024-01-27 15:29:23,559 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 193 transitions, 1564 flow [2024-01-27 15:29:23,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:29:23,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:29:23,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 197 transitions. [2024-01-27 15:29:23,560 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.432967032967033 [2024-01-27 15:29:23,560 INFO L175 Difference]: Start difference. First operand has 101 places, 82 transitions, 698 flow. Second operand 13 states and 197 transitions. [2024-01-27 15:29:23,561 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 193 transitions, 1564 flow [2024-01-27 15:29:23,574 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 193 transitions, 1505 flow, removed 4 selfloop flow, removed 8 redundant places. [2024-01-27 15:29:23,576 INFO L231 Difference]: Finished difference. Result has 108 places, 87 transitions, 810 flow [2024-01-27 15:29:23,576 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=648, PETRI_DIFFERENCE_MINUEND_PLACES=92, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=82, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=34, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=810, PETRI_PLACES=108, PETRI_TRANSITIONS=87} [2024-01-27 15:29:23,576 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 77 predicate places. [2024-01-27 15:29:23,576 INFO L495 AbstractCegarLoop]: Abstraction has has 108 places, 87 transitions, 810 flow [2024-01-27 15:29:23,577 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:23,577 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:23,577 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:23,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:23,788 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:23,789 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:23,789 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:23,789 INFO L85 PathProgramCache]: Analyzing trace with hash -1192318220, now seen corresponding path program 6 times [2024-01-27 15:29:23,789 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:23,789 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [133306352] [2024-01-27 15:29:23,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:23,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:23,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:23,943 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [133306352] [2024-01-27 15:29:23,943 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [133306352] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:23,943 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2080020128] [2024-01-27 15:29:23,944 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:29:23,944 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:23,944 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:23,945 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) [2024-01-27 15:29:23,964 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-01-27 15:29:24,020 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:29:24,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:24,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:24,026 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:24,183 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:24,183 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:24,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2080020128] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:24,183 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:24,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [9] total 16 [2024-01-27 15:29:24,184 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760541916] [2024-01-27 15:29:24,184 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:24,184 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:24,184 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:24,185 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:24,185 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:29:24,185 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:24,185 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 108 places, 87 transitions, 810 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:24,185 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:24,185 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:24,186 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:24,400 INFO L124 PetriNetUnfolderBase]: 927/1626 cut-off events. [2024-01-27 15:29:24,400 INFO L125 PetriNetUnfolderBase]: For 5837/5837 co-relation queries the response was YES. [2024-01-27 15:29:24,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6141 conditions, 1626 events. 927/1626 cut-off events. For 5837/5837 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8265 event pairs, 230 based on Foata normal form. 1/1625 useless extension candidates. Maximal degree in co-relation 6078. Up to 979 conditions per place. [2024-01-27 15:29:24,410 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 98 selfloop transitions, 32 changer transitions 9/140 dead transitions. [2024-01-27 15:29:24,410 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 140 transitions, 1299 flow [2024-01-27 15:29:24,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:24,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:24,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 124 transitions. [2024-01-27 15:29:24,411 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.39365079365079364 [2024-01-27 15:29:24,411 INFO L175 Difference]: Start difference. First operand has 108 places, 87 transitions, 810 flow. Second operand 9 states and 124 transitions. [2024-01-27 15:29:24,412 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 140 transitions, 1299 flow [2024-01-27 15:29:24,429 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 108 places, 140 transitions, 1249 flow, removed 6 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:24,432 INFO L231 Difference]: Finished difference. Result has 110 places, 87 transitions, 830 flow [2024-01-27 15:29:24,432 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=760, PETRI_DIFFERENCE_MINUEND_PLACES=100, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=830, PETRI_PLACES=110, PETRI_TRANSITIONS=87} [2024-01-27 15:29:24,432 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 79 predicate places. [2024-01-27 15:29:24,433 INFO L495 AbstractCegarLoop]: Abstraction has has 110 places, 87 transitions, 830 flow [2024-01-27 15:29:24,433 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:24,433 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:24,433 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:24,445 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:24,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-01-27 15:29:24,641 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:24,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:24,641 INFO L85 PathProgramCache]: Analyzing trace with hash -14411879, now seen corresponding path program 3 times [2024-01-27 15:29:24,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:24,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1224966917] [2024-01-27 15:29:24,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:24,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:24,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:24,788 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:24,789 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:24,789 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1224966917] [2024-01-27 15:29:24,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1224966917] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:24,790 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816957867] [2024-01-27 15:29:24,790 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:24,790 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:24,791 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:24,791 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) [2024-01-27 15:29:24,815 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-01-27 15:29:24,866 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:24,866 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:24,867 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:24,868 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:25,045 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:25,045 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:25,045 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816957867] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:25,045 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:25,045 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-01-27 15:29:25,045 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [735184779] [2024-01-27 15:29:25,045 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:25,046 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:25,046 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:25,046 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:25,046 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2024-01-27 15:29:25,046 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:25,046 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 110 places, 87 transitions, 830 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:25,046 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:25,046 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:25,046 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:25,322 INFO L124 PetriNetUnfolderBase]: 917/1601 cut-off events. [2024-01-27 15:29:25,323 INFO L125 PetriNetUnfolderBase]: For 5622/5622 co-relation queries the response was YES. [2024-01-27 15:29:25,327 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6180 conditions, 1601 events. 917/1601 cut-off events. For 5622/5622 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8098 event pairs, 249 based on Foata normal form. 1/1600 useless extension candidates. Maximal degree in co-relation 6120. Up to 1051 conditions per place. [2024-01-27 15:29:25,331 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 86 selfloop transitions, 25 changer transitions 19/131 dead transitions. [2024-01-27 15:29:25,331 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 117 places, 131 transitions, 1273 flow [2024-01-27 15:29:25,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:25,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:25,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 114 transitions. [2024-01-27 15:29:25,332 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3619047619047619 [2024-01-27 15:29:25,332 INFO L175 Difference]: Start difference. First operand has 110 places, 87 transitions, 830 flow. Second operand 9 states and 114 transitions. [2024-01-27 15:29:25,332 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 117 places, 131 transitions, 1273 flow [2024-01-27 15:29:25,347 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 131 transitions, 1211 flow, removed 1 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:25,349 INFO L231 Difference]: Finished difference. Result has 111 places, 84 transitions, 800 flow [2024-01-27 15:29:25,349 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=768, PETRI_DIFFERENCE_MINUEND_PLACES=102, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=62, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=800, PETRI_PLACES=111, PETRI_TRANSITIONS=84} [2024-01-27 15:29:25,349 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 80 predicate places. [2024-01-27 15:29:25,349 INFO L495 AbstractCegarLoop]: Abstraction has has 111 places, 84 transitions, 800 flow [2024-01-27 15:29:25,350 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:25,350 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:25,350 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:25,365 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:25,561 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-01-27 15:29:25,561 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:25,561 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:25,561 INFO L85 PathProgramCache]: Analyzing trace with hash 842736753, now seen corresponding path program 4 times [2024-01-27 15:29:25,562 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:25,562 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [815288906] [2024-01-27 15:29:25,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:25,562 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:25,691 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:25,691 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [815288906] [2024-01-27 15:29:25,691 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [815288906] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:25,691 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1785265685] [2024-01-27 15:29:25,692 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:29:25,692 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:25,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:25,700 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) [2024-01-27 15:29:25,730 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-01-27 15:29:25,783 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:29:25,783 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:25,784 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 18 conjunts are in the unsatisfiable core [2024-01-27 15:29:25,786 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:25,984 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:25,985 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:26,305 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:26,306 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1785265685] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:26,306 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:26,306 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [8, 10] total 26 [2024-01-27 15:29:26,306 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556551674] [2024-01-27 15:29:26,306 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:26,306 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:26,307 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:26,307 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:26,308 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=115, Invalid=535, Unknown=0, NotChecked=0, Total=650 [2024-01-27 15:29:26,308 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:26,308 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 111 places, 84 transitions, 800 flow. Second operand has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,308 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:26,308 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:26,308 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:26,909 INFO L124 PetriNetUnfolderBase]: 1095/1911 cut-off events. [2024-01-27 15:29:26,909 INFO L125 PetriNetUnfolderBase]: For 6846/6846 co-relation queries the response was YES. [2024-01-27 15:29:26,915 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7432 conditions, 1911 events. 1095/1911 cut-off events. For 6846/6846 co-relation queries the response was YES. Maximal size of possible extension queue 109. Compared 10021 event pairs, 195 based on Foata normal form. 2/1911 useless extension candidates. Maximal degree in co-relation 7204. Up to 666 conditions per place. [2024-01-27 15:29:26,920 INFO L140 encePairwiseOnDemand]: 20/35 looper letters, 159 selfloop transitions, 54 changer transitions 13/227 dead transitions. [2024-01-27 15:29:26,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 121 places, 227 transitions, 2022 flow [2024-01-27 15:29:26,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-27 15:29:26,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-27 15:29:26,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 226 transitions. [2024-01-27 15:29:26,922 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.43047619047619046 [2024-01-27 15:29:26,922 INFO L175 Difference]: Start difference. First operand has 111 places, 84 transitions, 800 flow. Second operand 15 states and 226 transitions. [2024-01-27 15:29:26,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 121 places, 227 transitions, 2022 flow [2024-01-27 15:29:26,939 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 227 transitions, 1919 flow, removed 5 selfloop flow, removed 8 redundant places. [2024-01-27 15:29:26,941 INFO L231 Difference]: Finished difference. Result has 121 places, 103 transitions, 1078 flow [2024-01-27 15:29:26,942 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=728, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=84, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1078, PETRI_PLACES=121, PETRI_TRANSITIONS=103} [2024-01-27 15:29:26,943 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 90 predicate places. [2024-01-27 15:29:26,943 INFO L495 AbstractCegarLoop]: Abstraction has has 121 places, 103 transitions, 1078 flow [2024-01-27 15:29:26,943 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.2) internal successors, (52), 10 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:26,943 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:26,943 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:26,954 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:27,154 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-01-27 15:29:27,155 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:27,155 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:27,155 INFO L85 PathProgramCache]: Analyzing trace with hash -900001537, now seen corresponding path program 5 times [2024-01-27 15:29:27,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:27,155 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115527498] [2024-01-27 15:29:27,155 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:27,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:27,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:27,301 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:27,301 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115527498] [2024-01-27 15:29:27,301 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115527498] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:27,301 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [941364275] [2024-01-27 15:29:27,301 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:29:27,301 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:27,301 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:27,309 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) [2024-01-27 15:29:27,336 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-01-27 15:29:27,396 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:29:27,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:27,397 INFO L262 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 20 conjunts are in the unsatisfiable core [2024-01-27 15:29:27,399 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:27,589 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:27,589 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:28,018 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:28,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [941364275] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:28,019 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:28,019 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8, 8] total 22 [2024-01-27 15:29:28,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238315793] [2024-01-27 15:29:28,019 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:28,020 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:28,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:28,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:28,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=106, Invalid=400, Unknown=0, NotChecked=0, Total=506 [2024-01-27 15:29:28,020 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:28,021 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 103 transitions, 1078 flow. Second operand has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:28,021 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:28,021 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:28,021 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:28,553 INFO L124 PetriNetUnfolderBase]: 1056/1831 cut-off events. [2024-01-27 15:29:28,553 INFO L125 PetriNetUnfolderBase]: For 9130/9130 co-relation queries the response was YES. [2024-01-27 15:29:28,559 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7849 conditions, 1831 events. 1056/1831 cut-off events. For 9130/9130 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 9375 event pairs, 280 based on Foata normal form. 1/1830 useless extension candidates. Maximal degree in co-relation 7779. Up to 1228 conditions per place. [2024-01-27 15:29:28,564 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 95 selfloop transitions, 30 changer transitions 22/148 dead transitions. [2024-01-27 15:29:28,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 130 places, 148 transitions, 1557 flow [2024-01-27 15:29:28,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:29:28,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:29:28,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-01-27 15:29:28,566 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2024-01-27 15:29:28,566 INFO L175 Difference]: Start difference. First operand has 121 places, 103 transitions, 1078 flow. Second operand 12 states and 128 transitions. [2024-01-27 15:29:28,567 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 130 places, 148 transitions, 1557 flow [2024-01-27 15:29:28,593 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 118 places, 148 transitions, 1401 flow, removed 29 selfloop flow, removed 12 redundant places. [2024-01-27 15:29:28,598 INFO L231 Difference]: Finished difference. Result has 120 places, 96 transitions, 904 flow [2024-01-27 15:29:28,598 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=928, PETRI_DIFFERENCE_MINUEND_PLACES=107, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=103, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=30, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=73, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=904, PETRI_PLACES=120, PETRI_TRANSITIONS=96} [2024-01-27 15:29:28,598 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 89 predicate places. [2024-01-27 15:29:28,598 INFO L495 AbstractCegarLoop]: Abstraction has has 120 places, 96 transitions, 904 flow [2024-01-27 15:29:28,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.444444444444445) internal successors, (49), 9 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) [2024-01-27 15:29:28,600 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:28,600 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:28,613 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-01-27 15:29:28,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-01-27 15:29:28,811 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:28,811 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:28,811 INFO L85 PathProgramCache]: Analyzing trace with hash -1962269031, now seen corresponding path program 6 times [2024-01-27 15:29:28,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:28,811 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1519650732] [2024-01-27 15:29:28,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:28,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:28,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:28,936 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:28,936 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1519650732] [2024-01-27 15:29:28,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1519650732] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:28,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [880456880] [2024-01-27 15:29:28,937 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:29:28,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:28,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:28,938 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) [2024-01-27 15:29:28,939 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-01-27 15:29:29,019 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:29:29,020 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:29,021 INFO L262 TraceCheckSpWp]: Trace formula consists of 195 conjuncts, 19 conjunts are in the unsatisfiable core [2024-01-27 15:29:29,027 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:29,177 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:29,178 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:29,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [880456880] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:29,178 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:29,178 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 14 [2024-01-27 15:29:29,178 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [252283067] [2024-01-27 15:29:29,178 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:29,179 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-01-27 15:29:29,180 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:29,180 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-01-27 15:29:29,180 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=174, Unknown=0, NotChecked=0, Total=210 [2024-01-27 15:29:29,180 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:29,181 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 120 places, 96 transitions, 904 flow. Second operand has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,181 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:29,181 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:29,181 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:29,409 INFO L124 PetriNetUnfolderBase]: 1011/1741 cut-off events. [2024-01-27 15:29:29,409 INFO L125 PetriNetUnfolderBase]: For 7417/7417 co-relation queries the response was YES. [2024-01-27 15:29:29,415 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7234 conditions, 1741 events. 1011/1741 cut-off events. For 7417/7417 co-relation queries the response was YES. Maximal size of possible extension queue 103. Compared 8770 event pairs, 280 based on Foata normal form. 1/1740 useless extension candidates. Maximal degree in co-relation 7171. Up to 1228 conditions per place. [2024-01-27 15:29:29,419 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 74 selfloop transitions, 25 changer transitions 26/126 dead transitions. [2024-01-27 15:29:29,419 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 126 transitions, 1267 flow [2024-01-27 15:29:29,420 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:29:29,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:29:29,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-01-27 15:29:29,420 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2024-01-27 15:29:29,420 INFO L175 Difference]: Start difference. First operand has 120 places, 96 transitions, 904 flow. Second operand 9 states and 101 transitions. [2024-01-27 15:29:29,420 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 126 transitions, 1267 flow [2024-01-27 15:29:29,439 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 114 places, 126 transitions, 1194 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-01-27 15:29:29,440 INFO L231 Difference]: Finished difference. Result has 115 places, 88 transitions, 827 flow [2024-01-27 15:29:29,441 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=831, PETRI_DIFFERENCE_MINUEND_PLACES=106, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=96, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=25, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=71, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=827, PETRI_PLACES=115, PETRI_TRANSITIONS=88} [2024-01-27 15:29:29,441 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-01-27 15:29:29,441 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 88 transitions, 827 flow [2024-01-27 15:29:29,441 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.75) internal successors, (46), 8 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,441 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:29,441 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:29,454 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-01-27 15:29:29,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-01-27 15:29:29,650 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:29,651 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:29,651 INFO L85 PathProgramCache]: Analyzing trace with hash -626985642, now seen corresponding path program 1 times [2024-01-27 15:29:29,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:29,651 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1172305237] [2024-01-27 15:29:29,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:29,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:29,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:29,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:29,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1172305237] [2024-01-27 15:29:29,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1172305237] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:29,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [222668137] [2024-01-27 15:29:29,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:29,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:29,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:29,740 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) [2024-01-27 15:29:29,764 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-01-27 15:29:29,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:29,817 INFO L262 TraceCheckSpWp]: Trace formula consists of 213 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 15:29:29,818 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:29,885 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:29,886 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:29,938 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:29,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [222668137] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:29,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:29,938 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-01-27 15:29:29,938 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348736170] [2024-01-27 15:29:29,938 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:29,938 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:29:29,938 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:29,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:29:29,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:29:29,939 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:29,939 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 88 transitions, 827 flow. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:29,939 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:29,939 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:29,939 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:30,226 INFO L124 PetriNetUnfolderBase]: 1058/1806 cut-off events. [2024-01-27 15:29:30,226 INFO L125 PetriNetUnfolderBase]: For 7518/7518 co-relation queries the response was YES. [2024-01-27 15:29:30,231 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1806 events. 1058/1806 cut-off events. For 7518/7518 co-relation queries the response was YES. Maximal size of possible extension queue 99. Compared 9045 event pairs, 522 based on Foata normal form. 40/1845 useless extension candidates. Maximal degree in co-relation 7612. Up to 710 conditions per place. [2024-01-27 15:29:30,235 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 135 selfloop transitions, 13 changer transitions 0/149 dead transitions. [2024-01-27 15:29:30,235 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 149 transitions, 1578 flow [2024-01-27 15:29:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-01-27 15:29:30,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-01-27 15:29:30,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 106 transitions. [2024-01-27 15:29:30,241 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37857142857142856 [2024-01-27 15:29:30,241 INFO L175 Difference]: Start difference. First operand has 115 places, 88 transitions, 827 flow. Second operand 8 states and 106 transitions. [2024-01-27 15:29:30,242 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 149 transitions, 1578 flow [2024-01-27 15:29:30,260 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 95 places, 149 transitions, 1366 flow, removed 43 selfloop flow, removed 13 redundant places. [2024-01-27 15:29:30,262 INFO L231 Difference]: Finished difference. Result has 98 places, 95 transitions, 784 flow [2024-01-27 15:29:30,262 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=685, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=88, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=7, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=784, PETRI_PLACES=98, PETRI_TRANSITIONS=95} [2024-01-27 15:29:30,262 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 67 predicate places. [2024-01-27 15:29:30,262 INFO L495 AbstractCegarLoop]: Abstraction has has 98 places, 95 transitions, 784 flow [2024-01-27 15:29:30,262 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:30,263 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:30,263 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:30,279 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:30,473 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:30,475 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:30,475 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:30,475 INFO L85 PathProgramCache]: Analyzing trace with hash 7267333, now seen corresponding path program 1 times [2024-01-27 15:29:30,475 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:30,475 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360536266] [2024-01-27 15:29:30,476 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:30,476 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:30,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:30,542 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:30,543 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:30,543 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360536266] [2024-01-27 15:29:30,543 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360536266] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:30,543 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:30,543 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:30,543 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [301029079] [2024-01-27 15:29:30,543 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:30,544 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:30,544 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:30,544 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:30,544 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:30,544 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:30,544 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 98 places, 95 transitions, 784 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:30,544 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:30,545 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:30,545 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:30,686 INFO L124 PetriNetUnfolderBase]: 832/1450 cut-off events. [2024-01-27 15:29:30,686 INFO L125 PetriNetUnfolderBase]: For 5172/5172 co-relation queries the response was YES. [2024-01-27 15:29:30,690 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6027 conditions, 1450 events. 832/1450 cut-off events. For 5172/5172 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 6909 event pairs, 524 based on Foata normal form. 38/1487 useless extension candidates. Maximal degree in co-relation 5980. Up to 908 conditions per place. [2024-01-27 15:29:30,694 INFO L140 encePairwiseOnDemand]: 29/35 looper letters, 93 selfloop transitions, 9 changer transitions 8/111 dead transitions. [2024-01-27 15:29:30,694 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 102 places, 111 transitions, 1050 flow [2024-01-27 15:29:30,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:30,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:30,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 79 transitions. [2024-01-27 15:29:30,695 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4514285714285714 [2024-01-27 15:29:30,695 INFO L175 Difference]: Start difference. First operand has 98 places, 95 transitions, 784 flow. Second operand 5 states and 79 transitions. [2024-01-27 15:29:30,695 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 102 places, 111 transitions, 1050 flow [2024-01-27 15:29:30,709 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 99 places, 111 transitions, 1038 flow, removed 3 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:30,711 INFO L231 Difference]: Finished difference. Result has 100 places, 81 transitions, 649 flow [2024-01-27 15:29:30,711 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=675, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=76, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=649, PETRI_PLACES=100, PETRI_TRANSITIONS=81} [2024-01-27 15:29:30,711 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 69 predicate places. [2024-01-27 15:29:30,712 INFO L495 AbstractCegarLoop]: Abstraction has has 100 places, 81 transitions, 649 flow [2024-01-27 15:29:30,712 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:30,712 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:30,712 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:30,712 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-01-27 15:29:30,712 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:30,713 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:30,713 INFO L85 PathProgramCache]: Analyzing trace with hash -1438137167, now seen corresponding path program 1 times [2024-01-27 15:29:30,713 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:30,713 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1888909934] [2024-01-27 15:29:30,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:30,713 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:30,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:30,759 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:30,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:30,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1888909934] [2024-01-27 15:29:30,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1888909934] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:30,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:29:30,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-01-27 15:29:30,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129606224] [2024-01-27 15:29:30,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:30,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-01-27 15:29:30,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:30,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-01-27 15:29:30,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-01-27 15:29:30,761 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:30,762 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 81 transitions, 649 flow. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:30,762 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:30,762 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:30,762 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:30,898 INFO L124 PetriNetUnfolderBase]: 647/1148 cut-off events. [2024-01-27 15:29:30,898 INFO L125 PetriNetUnfolderBase]: For 3976/3976 co-relation queries the response was YES. [2024-01-27 15:29:30,901 INFO L83 FinitePrefix]: Finished finitePrefix Result has 4766 conditions, 1148 events. 647/1148 cut-off events. For 3976/3976 co-relation queries the response was YES. Maximal size of possible extension queue 55. Compared 5271 event pairs, 417 based on Foata normal form. 32/1179 useless extension candidates. Maximal degree in co-relation 4733. Up to 908 conditions per place. [2024-01-27 15:29:30,903 INFO L140 encePairwiseOnDemand]: 30/35 looper letters, 54 selfloop transitions, 2 changer transitions 30/87 dead transitions. [2024-01-27 15:29:30,903 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 97 places, 87 transitions, 783 flow [2024-01-27 15:29:30,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-01-27 15:29:30,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-01-27 15:29:30,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 69 transitions. [2024-01-27 15:29:30,904 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3942857142857143 [2024-01-27 15:29:30,904 INFO L175 Difference]: Start difference. First operand has 100 places, 81 transitions, 649 flow. Second operand 5 states and 69 transitions. [2024-01-27 15:29:30,904 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 97 places, 87 transitions, 783 flow [2024-01-27 15:29:30,912 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 87 transitions, 745 flow, removed 9 selfloop flow, removed 8 redundant places. [2024-01-27 15:29:30,913 INFO L231 Difference]: Finished difference. Result has 89 places, 57 transitions, 381 flow [2024-01-27 15:29:30,913 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=496, PETRI_DIFFERENCE_MINUEND_PLACES=85, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=70, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=381, PETRI_PLACES=89, PETRI_TRANSITIONS=57} [2024-01-27 15:29:30,913 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 58 predicate places. [2024-01-27 15:29:30,913 INFO L495 AbstractCegarLoop]: Abstraction has has 89 places, 57 transitions, 381 flow [2024-01-27 15:29:30,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 5 states have internal predecessors, (38), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:30,914 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:30,914 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:30,914 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-01-27 15:29:30,915 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:30,915 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:30,915 INFO L85 PathProgramCache]: Analyzing trace with hash -1167778243, now seen corresponding path program 1 times [2024-01-27 15:29:30,915 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:30,916 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [752268736] [2024-01-27 15:29:30,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:30,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:30,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:30,998 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:30,999 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [752268736] [2024-01-27 15:29:30,999 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [752268736] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:30,999 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [991943432] [2024-01-27 15:29:30,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:30,999 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:30,999 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:31,000 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) [2024-01-27 15:29:31,027 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-01-27 15:29:31,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:31,094 INFO L262 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 10 conjunts are in the unsatisfiable core [2024-01-27 15:29:31,094 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:31,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:31,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:31,180 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:31,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [991943432] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:31,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:31,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [7, 6] total 13 [2024-01-27 15:29:31,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39347671] [2024-01-27 15:29:31,181 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:31,181 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:29:31,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:31,182 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:29:31,182 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-01-27 15:29:31,182 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:31,182 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 89 places, 57 transitions, 381 flow. Second operand has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:31,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:31,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:31,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:31,271 INFO L124 PetriNetUnfolderBase]: 384/651 cut-off events. [2024-01-27 15:29:31,271 INFO L125 PetriNetUnfolderBase]: For 2073/2073 co-relation queries the response was YES. [2024-01-27 15:29:31,272 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2752 conditions, 651 events. 384/651 cut-off events. For 2073/2073 co-relation queries the response was YES. Maximal size of possible extension queue 31. Compared 2379 event pairs, 199 based on Foata normal form. 20/670 useless extension candidates. Maximal degree in co-relation 2723. Up to 472 conditions per place. [2024-01-27 15:29:31,274 INFO L140 encePairwiseOnDemand]: 26/35 looper letters, 50 selfloop transitions, 12 changer transitions 0/63 dead transitions. [2024-01-27 15:29:31,274 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 76 places, 63 transitions, 544 flow [2024-01-27 15:29:31,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-01-27 15:29:31,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-01-27 15:29:31,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 66 transitions. [2024-01-27 15:29:31,275 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2693877551020408 [2024-01-27 15:29:31,275 INFO L175 Difference]: Start difference. First operand has 89 places, 57 transitions, 381 flow. Second operand 7 states and 66 transitions. [2024-01-27 15:29:31,275 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 76 places, 63 transitions, 544 flow [2024-01-27 15:29:31,279 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 64 places, 63 transitions, 480 flow, removed 25 selfloop flow, removed 12 redundant places. [2024-01-27 15:29:31,280 INFO L231 Difference]: Finished difference. Result has 65 places, 50 transitions, 325 flow [2024-01-27 15:29:31,280 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=283, PETRI_DIFFERENCE_MINUEND_PLACES=58, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=49, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=37, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=325, PETRI_PLACES=65, PETRI_TRANSITIONS=50} [2024-01-27 15:29:31,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 34 predicate places. [2024-01-27 15:29:31,280 INFO L495 AbstractCegarLoop]: Abstraction has has 65 places, 50 transitions, 325 flow [2024-01-27 15:29:31,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.428571428571429) internal successors, (45), 7 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:31,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:31,281 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:31,308 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:31,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:31,493 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:31,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:31,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1127382352, now seen corresponding path program 1 times [2024-01-27 15:29:31,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:31,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1696353167] [2024-01-27 15:29:31,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:31,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:31,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:32,178 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:32,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1696353167] [2024-01-27 15:29:32,178 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1696353167] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:32,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408803656] [2024-01-27 15:29:32,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:32,178 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:32,178 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:32,179 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) [2024-01-27 15:29:32,180 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-01-27 15:29:32,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:32,265 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:29:32,266 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:32,609 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:32,610 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:32,681 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:32,681 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:33,085 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:29:33,085 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-01-27 15:29:33,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408803656] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:33,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:33,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:29:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1304421458] [2024-01-27 15:29:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:33,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=947, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:29:33,140 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:33,140 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 65 places, 50 transitions, 325 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:33,140 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:33,140 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:33,140 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:33,976 INFO L124 PetriNetUnfolderBase]: 599/1028 cut-off events. [2024-01-27 15:29:33,976 INFO L125 PetriNetUnfolderBase]: For 1924/1924 co-relation queries the response was YES. [2024-01-27 15:29:33,978 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3982 conditions, 1028 events. 599/1028 cut-off events. For 1924/1924 co-relation queries the response was YES. Maximal size of possible extension queue 56. Compared 4538 event pairs, 95 based on Foata normal form. 1/1028 useless extension candidates. Maximal degree in co-relation 3962. Up to 421 conditions per place. [2024-01-27 15:29:33,981 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 113 selfloop transitions, 32 changer transitions 12/158 dead transitions. [2024-01-27 15:29:33,981 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 158 transitions, 1157 flow [2024-01-27 15:29:33,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:29:33,981 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:29:33,982 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 182 transitions. [2024-01-27 15:29:33,982 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.37142857142857144 [2024-01-27 15:29:33,982 INFO L175 Difference]: Start difference. First operand has 65 places, 50 transitions, 325 flow. Second operand 14 states and 182 transitions. [2024-01-27 15:29:33,982 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 158 transitions, 1157 flow [2024-01-27 15:29:33,985 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 73 places, 158 transitions, 1137 flow, removed 0 selfloop flow, removed 5 redundant places. [2024-01-27 15:29:33,987 INFO L231 Difference]: Finished difference. Result has 82 places, 69 transitions, 593 flow [2024-01-27 15:29:33,987 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=309, PETRI_DIFFERENCE_MINUEND_PLACES=60, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=50, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=14, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=593, PETRI_PLACES=82, PETRI_TRANSITIONS=69} [2024-01-27 15:29:33,987 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 51 predicate places. [2024-01-27 15:29:33,987 INFO L495 AbstractCegarLoop]: Abstraction has has 82 places, 69 transitions, 593 flow [2024-01-27 15:29:33,987 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:33,988 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:33,988 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:34,004 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:34,198 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:34,198 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:34,199 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:34,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1668991672, now seen corresponding path program 2 times [2024-01-27 15:29:34,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:34,199 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2050355300] [2024-01-27 15:29:34,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:34,199 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:34,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:34,739 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:34,739 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2050355300] [2024-01-27 15:29:34,739 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2050355300] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:34,739 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [408313952] [2024-01-27 15:29:34,739 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:34,739 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:34,739 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:34,740 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) [2024-01-27 15:29:34,768 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-01-27 15:29:34,835 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:34,835 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:34,836 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:34,837 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:34,922 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:34,923 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:35,021 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:35,021 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:35,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [408313952] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:35,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:35,022 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:35,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014238530] [2024-01-27 15:29:35,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:35,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:35,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:35,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:35,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:35,023 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:35,023 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 82 places, 69 transitions, 593 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:35,023 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:35,023 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:35,023 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:35,345 INFO L124 PetriNetUnfolderBase]: 691/1174 cut-off events. [2024-01-27 15:29:35,346 INFO L125 PetriNetUnfolderBase]: For 4698/4698 co-relation queries the response was YES. [2024-01-27 15:29:35,350 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5489 conditions, 1174 events. 691/1174 cut-off events. For 4698/4698 co-relation queries the response was YES. Maximal size of possible extension queue 63. Compared 5294 event pairs, 333 based on Foata normal form. 1/1174 useless extension candidates. Maximal degree in co-relation 5460. Up to 855 conditions per place. [2024-01-27 15:29:35,353 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 87 selfloop transitions, 29 changer transitions 19/136 dead transitions. [2024-01-27 15:29:35,353 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 90 places, 136 transitions, 1392 flow [2024-01-27 15:29:35,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:29:35,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:29:35,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 125 transitions. [2024-01-27 15:29:35,354 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3246753246753247 [2024-01-27 15:29:35,354 INFO L175 Difference]: Start difference. First operand has 82 places, 69 transitions, 593 flow. Second operand 11 states and 125 transitions. [2024-01-27 15:29:35,354 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 90 places, 136 transitions, 1392 flow [2024-01-27 15:29:35,364 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 86 places, 136 transitions, 1311 flow, removed 30 selfloop flow, removed 4 redundant places. [2024-01-27 15:29:35,366 INFO L231 Difference]: Finished difference. Result has 92 places, 90 transitions, 915 flow [2024-01-27 15:29:35,366 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=538, PETRI_DIFFERENCE_MINUEND_PLACES=76, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=69, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=52, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=915, PETRI_PLACES=92, PETRI_TRANSITIONS=90} [2024-01-27 15:29:35,366 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 61 predicate places. [2024-01-27 15:29:35,366 INFO L495 AbstractCegarLoop]: Abstraction has has 92 places, 90 transitions, 915 flow [2024-01-27 15:29:35,367 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:35,367 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:35,367 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:35,378 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:35,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-01-27 15:29:35,578 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:35,579 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:35,579 INFO L85 PathProgramCache]: Analyzing trace with hash -583777256, now seen corresponding path program 3 times [2024-01-27 15:29:35,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:35,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1018967457] [2024-01-27 15:29:35,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:35,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:35,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:36,175 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:36,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1018967457] [2024-01-27 15:29:36,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1018967457] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:36,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [254839107] [2024-01-27 15:29:36,175 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:36,176 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:36,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:36,180 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) [2024-01-27 15:29:36,184 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-01-27 15:29:36,255 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:36,255 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:36,257 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:36,258 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:36,430 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:36,430 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:36,508 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:36,508 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:36,508 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [254839107] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:36,508 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:36,508 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:36,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1043463799] [2024-01-27 15:29:36,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:36,509 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:36,509 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:36,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:36,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:36,510 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:36,510 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 90 transitions, 915 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:36,510 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:36,510 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:36,510 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:36,947 INFO L124 PetriNetUnfolderBase]: 674/1149 cut-off events. [2024-01-27 15:29:36,947 INFO L125 PetriNetUnfolderBase]: For 5188/5188 co-relation queries the response was YES. [2024-01-27 15:29:36,950 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5580 conditions, 1149 events. 674/1149 cut-off events. For 5188/5188 co-relation queries the response was YES. Maximal size of possible extension queue 61. Compared 5229 event pairs, 245 based on Foata normal form. 1/1149 useless extension candidates. Maximal degree in co-relation 5548. Up to 611 conditions per place. [2024-01-27 15:29:36,953 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 119 selfloop transitions, 26 changer transitions 20/166 dead transitions. [2024-01-27 15:29:36,953 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 166 transitions, 1692 flow [2024-01-27 15:29:36,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:29:36,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:29:36,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 148 transitions. [2024-01-27 15:29:36,963 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-01-27 15:29:36,963 INFO L175 Difference]: Start difference. First operand has 92 places, 90 transitions, 915 flow. Second operand 12 states and 148 transitions. [2024-01-27 15:29:36,963 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 166 transitions, 1692 flow [2024-01-27 15:29:36,975 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 98 places, 166 transitions, 1564 flow, removed 64 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:36,977 INFO L231 Difference]: Finished difference. Result has 101 places, 87 transitions, 863 flow [2024-01-27 15:29:36,977 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=829, PETRI_DIFFERENCE_MINUEND_PLACES=87, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=26, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=64, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=863, PETRI_PLACES=101, PETRI_TRANSITIONS=87} [2024-01-27 15:29:36,977 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 70 predicate places. [2024-01-27 15:29:36,978 INFO L495 AbstractCegarLoop]: Abstraction has has 101 places, 87 transitions, 863 flow [2024-01-27 15:29:36,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:36,978 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:36,978 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:36,989 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2024-01-27 15:29:37,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:37,189 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:37,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:37,189 INFO L85 PathProgramCache]: Analyzing trace with hash 2026843892, now seen corresponding path program 4 times [2024-01-27 15:29:37,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:37,189 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713450193] [2024-01-27 15:29:37,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:37,189 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:37,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:37,748 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:37,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713450193] [2024-01-27 15:29:37,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1713450193] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:37,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2094375992] [2024-01-27 15:29:37,749 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:29:37,749 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:37,749 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:37,750 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) [2024-01-27 15:29:37,778 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-01-27 15:29:37,849 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:29:37,850 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:37,851 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 44 conjunts are in the unsatisfiable core [2024-01-27 15:29:37,853 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:38,185 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-01-27 15:29:38,186 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-01-27 15:29:38,299 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:38,299 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:38,693 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:29:38,693 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-01-27 15:29:38,771 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:38,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2094375992] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:38,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:38,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 14] total 35 [2024-01-27 15:29:38,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1874738271] [2024-01-27 15:29:38,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:38,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:29:38,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:38,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:29:38,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1038, Unknown=0, NotChecked=0, Total=1190 [2024-01-27 15:29:38,772 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:38,773 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 101 places, 87 transitions, 863 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:38,773 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:38,773 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:38,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:39,681 INFO L124 PetriNetUnfolderBase]: 707/1221 cut-off events. [2024-01-27 15:29:39,681 INFO L125 PetriNetUnfolderBase]: For 5862/5862 co-relation queries the response was YES. [2024-01-27 15:29:39,685 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5987 conditions, 1221 events. 707/1221 cut-off events. For 5862/5862 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5692 event pairs, 103 based on Foata normal form. 1/1221 useless extension candidates. Maximal degree in co-relation 5952. Up to 660 conditions per place. [2024-01-27 15:29:39,688 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 106 selfloop transitions, 68 changer transitions 18/193 dead transitions. [2024-01-27 15:29:39,688 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 115 places, 193 transitions, 1989 flow [2024-01-27 15:29:39,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-01-27 15:29:39,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-01-27 15:29:39,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 209 transitions. [2024-01-27 15:29:39,690 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-01-27 15:29:39,690 INFO L175 Difference]: Start difference. First operand has 101 places, 87 transitions, 863 flow. Second operand 19 states and 209 transitions. [2024-01-27 15:29:39,690 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 115 places, 193 transitions, 1989 flow [2024-01-27 15:29:39,700 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 107 places, 193 transitions, 1867 flow, removed 21 selfloop flow, removed 8 redundant places. [2024-01-27 15:29:39,702 INFO L231 Difference]: Finished difference. Result has 115 places, 114 transitions, 1320 flow [2024-01-27 15:29:39,702 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=797, PETRI_DIFFERENCE_MINUEND_PLACES=89, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=87, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=1320, PETRI_PLACES=115, PETRI_TRANSITIONS=114} [2024-01-27 15:29:39,703 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 84 predicate places. [2024-01-27 15:29:39,703 INFO L495 AbstractCegarLoop]: Abstraction has has 115 places, 114 transitions, 1320 flow [2024-01-27 15:29:39,703 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:39,703 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:39,703 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:39,714 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:39,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:39,904 INFO L420 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:39,904 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:39,904 INFO L85 PathProgramCache]: Analyzing trace with hash 2048258024, now seen corresponding path program 5 times [2024-01-27 15:29:39,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:39,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [125205830] [2024-01-27 15:29:39,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:39,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:39,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:40,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:40,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [125205830] [2024-01-27 15:29:40,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [125205830] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:40,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1443449224] [2024-01-27 15:29:40,474 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:29:40,474 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:40,474 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:40,481 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) [2024-01-27 15:29:40,520 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-01-27 15:29:40,581 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:29:40,581 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:40,582 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:29:40,583 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:40,869 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:40,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:40,955 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:40,955 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:41,368 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:29:41,368 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-01-27 15:29:41,405 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:41,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1443449224] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:41,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:41,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:29:41,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667279283] [2024-01-27 15:29:41,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:41,406 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:41,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:41,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:41,407 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:29:41,407 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:41,407 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 115 places, 114 transitions, 1320 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:41,408 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:41,408 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:41,408 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:42,194 INFO L124 PetriNetUnfolderBase]: 708/1222 cut-off events. [2024-01-27 15:29:42,195 INFO L125 PetriNetUnfolderBase]: For 6748/6748 co-relation queries the response was YES. [2024-01-27 15:29:42,199 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6399 conditions, 1222 events. 708/1222 cut-off events. For 6748/6748 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5688 event pairs, 133 based on Foata normal form. 1/1222 useless extension candidates. Maximal degree in co-relation 6357. Up to 747 conditions per place. [2024-01-27 15:29:42,202 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 111 selfloop transitions, 62 changer transitions 6/180 dead transitions. [2024-01-27 15:29:42,202 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 124 places, 180 transitions, 2118 flow [2024-01-27 15:29:42,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:29:42,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:29:42,205 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 164 transitions. [2024-01-27 15:29:42,205 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3346938775510204 [2024-01-27 15:29:42,206 INFO L175 Difference]: Start difference. First operand has 115 places, 114 transitions, 1320 flow. Second operand 14 states and 164 transitions. [2024-01-27 15:29:42,206 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 124 places, 180 transitions, 2118 flow [2024-01-27 15:29:42,223 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 121 places, 180 transitions, 2006 flow, removed 47 selfloop flow, removed 3 redundant places. [2024-01-27 15:29:42,225 INFO L231 Difference]: Finished difference. Result has 127 places, 123 transitions, 1545 flow [2024-01-27 15:29:42,226 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1228, PETRI_DIFFERENCE_MINUEND_PLACES=108, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=114, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=57, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=1545, PETRI_PLACES=127, PETRI_TRANSITIONS=123} [2024-01-27 15:29:42,226 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-01-27 15:29:42,226 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 123 transitions, 1545 flow [2024-01-27 15:29:42,226 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:42,226 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:42,226 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:42,240 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:42,437 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:42,438 INFO L420 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:42,438 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:42,438 INFO L85 PathProgramCache]: Analyzing trace with hash 164236992, now seen corresponding path program 6 times [2024-01-27 15:29:42,438 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:42,438 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1290450549] [2024-01-27 15:29:42,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:42,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:42,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:42,959 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:42,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:42,959 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1290450549] [2024-01-27 15:29:42,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1290450549] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:42,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485632308] [2024-01-27 15:29:42,960 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:29:42,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:42,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:42,961 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) [2024-01-27 15:29:42,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-01-27 15:29:43,059 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:29:43,059 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:43,060 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:43,061 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:43,162 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:43,163 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:43,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:43,248 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:43,249 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485632308] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:43,249 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:43,249 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:43,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460456135] [2024-01-27 15:29:43,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:43,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:43,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:43,249 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:43,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:43,250 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:43,250 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 123 transitions, 1545 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:43,250 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:43,250 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:43,250 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:43,654 INFO L124 PetriNetUnfolderBase]: 728/1258 cut-off events. [2024-01-27 15:29:43,654 INFO L125 PetriNetUnfolderBase]: For 7081/7081 co-relation queries the response was YES. [2024-01-27 15:29:43,658 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6752 conditions, 1258 events. 728/1258 cut-off events. For 7081/7081 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5947 event pairs, 319 based on Foata normal form. 2/1259 useless extension candidates. Maximal degree in co-relation 6705. Up to 887 conditions per place. [2024-01-27 15:29:43,661 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 105 selfloop transitions, 44 changer transitions 21/171 dead transitions. [2024-01-27 15:29:43,661 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 136 places, 171 transitions, 2155 flow [2024-01-27 15:29:43,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:29:43,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:29:43,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 127 transitions. [2024-01-27 15:29:43,662 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32987012987012987 [2024-01-27 15:29:43,662 INFO L175 Difference]: Start difference. First operand has 127 places, 123 transitions, 1545 flow. Second operand 11 states and 127 transitions. [2024-01-27 15:29:43,662 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 136 places, 171 transitions, 2155 flow [2024-01-27 15:29:43,678 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 129 places, 171 transitions, 1999 flow, removed 24 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:43,680 INFO L231 Difference]: Finished difference. Result has 132 places, 120 transitions, 1476 flow [2024-01-27 15:29:43,680 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1401, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=43, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=79, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1476, PETRI_PLACES=132, PETRI_TRANSITIONS=120} [2024-01-27 15:29:43,681 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 101 predicate places. [2024-01-27 15:29:43,681 INFO L495 AbstractCegarLoop]: Abstraction has has 132 places, 120 transitions, 1476 flow [2024-01-27 15:29:43,681 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:43,681 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:43,681 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:43,693 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:43,885 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable27 [2024-01-27 15:29:43,886 INFO L420 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:43,886 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:43,886 INFO L85 PathProgramCache]: Analyzing trace with hash -899578516, now seen corresponding path program 7 times [2024-01-27 15:29:43,886 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:43,886 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064748954] [2024-01-27 15:29:43,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:43,886 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:43,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:44,537 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:44,538 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064748954] [2024-01-27 15:29:44,538 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064748954] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:44,538 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1598537542] [2024-01-27 15:29:44,538 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 15:29:44,538 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:44,538 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:44,539 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) [2024-01-27 15:29:44,540 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-01-27 15:29:44,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:44,632 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:29:44,633 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:44,866 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:44,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:45,005 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:45,005 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:45,438 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:29:45,439 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 87 treesize of output 63 [2024-01-27 15:29:45,474 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:45,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1598537542] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:45,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:45,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:29:45,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349315652] [2024-01-27 15:29:45,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:45,475 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:45,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:45,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:45,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:29:45,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:45,476 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 132 places, 120 transitions, 1476 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:45,476 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:45,476 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:45,476 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:46,391 INFO L124 PetriNetUnfolderBase]: 689/1188 cut-off events. [2024-01-27 15:29:46,392 INFO L125 PetriNetUnfolderBase]: For 6708/6708 co-relation queries the response was YES. [2024-01-27 15:29:46,396 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6296 conditions, 1188 events. 689/1188 cut-off events. For 6708/6708 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 5476 event pairs, 113 based on Foata normal form. 1/1188 useless extension candidates. Maximal degree in co-relation 6248. Up to 721 conditions per place. [2024-01-27 15:29:46,399 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 105 selfloop transitions, 55 changer transitions 18/179 dead transitions. [2024-01-27 15:29:46,399 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 179 transitions, 2096 flow [2024-01-27 15:29:46,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-27 15:29:46,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-27 15:29:46,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 167 transitions. [2024-01-27 15:29:46,400 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3180952380952381 [2024-01-27 15:29:46,400 INFO L175 Difference]: Start difference. First operand has 132 places, 120 transitions, 1476 flow. Second operand 15 states and 167 transitions. [2024-01-27 15:29:46,400 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 179 transitions, 2096 flow [2024-01-27 15:29:46,415 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 179 transitions, 2041 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-27 15:29:46,417 INFO L231 Difference]: Finished difference. Result has 134 places, 115 transitions, 1454 flow [2024-01-27 15:29:46,417 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1421, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=120, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=65, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1454, PETRI_PLACES=134, PETRI_TRANSITIONS=115} [2024-01-27 15:29:46,418 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-01-27 15:29:46,418 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 115 transitions, 1454 flow [2024-01-27 15:29:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:46,418 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:46,418 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:46,429 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Ended with exit code 0 [2024-01-27 15:29:46,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable28 [2024-01-27 15:29:46,620 INFO L420 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:46,620 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:46,620 INFO L85 PathProgramCache]: Analyzing trace with hash 1690405804, now seen corresponding path program 8 times [2024-01-27 15:29:46,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:46,620 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1666791392] [2024-01-27 15:29:46,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:46,620 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:46,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:47,205 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:47,205 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1666791392] [2024-01-27 15:29:47,205 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1666791392] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:47,205 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [233444191] [2024-01-27 15:29:47,205 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:47,205 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:47,205 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:47,206 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) [2024-01-27 15:29:47,207 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-01-27 15:29:47,296 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:47,296 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:47,297 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:47,298 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:47,417 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:47,417 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:47,479 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:47,479 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:47,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [233444191] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:47,480 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:47,480 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:47,480 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383775902] [2024-01-27 15:29:47,480 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:47,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:47,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:47,481 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:47,481 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:47,481 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:47,481 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 115 transitions, 1454 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:47,481 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:47,481 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:47,481 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:47,734 INFO L124 PetriNetUnfolderBase]: 700/1205 cut-off events. [2024-01-27 15:29:47,734 INFO L125 PetriNetUnfolderBase]: For 6814/6814 co-relation queries the response was YES. [2024-01-27 15:29:47,738 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6461 conditions, 1205 events. 700/1205 cut-off events. For 6814/6814 co-relation queries the response was YES. Maximal size of possible extension queue 69. Compared 5576 event pairs, 333 based on Foata normal form. 1/1205 useless extension candidates. Maximal degree in co-relation 6417. Up to 919 conditions per place. [2024-01-27 15:29:47,741 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 93 selfloop transitions, 49 changer transitions 6/149 dead transitions. [2024-01-27 15:29:47,741 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 149 transitions, 1996 flow [2024-01-27 15:29:47,741 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:29:47,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:29:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-01-27 15:29:47,742 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-01-27 15:29:47,742 INFO L175 Difference]: Start difference. First operand has 134 places, 115 transitions, 1454 flow. Second operand 10 states and 112 transitions. [2024-01-27 15:29:47,742 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 149 transitions, 1996 flow [2024-01-27 15:29:47,758 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 125 places, 149 transitions, 1865 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-01-27 15:29:47,760 INFO L231 Difference]: Finished difference. Result has 127 places, 122 transitions, 1543 flow [2024-01-27 15:29:47,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1331, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=115, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=72, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1543, PETRI_PLACES=127, PETRI_TRANSITIONS=122} [2024-01-27 15:29:47,761 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 96 predicate places. [2024-01-27 15:29:47,761 INFO L495 AbstractCegarLoop]: Abstraction has has 127 places, 122 transitions, 1543 flow [2024-01-27 15:29:47,761 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:47,761 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:47,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:47,772 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:47,961 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:47,962 INFO L420 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:47,962 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:47,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1149924450, now seen corresponding path program 9 times [2024-01-27 15:29:47,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:47,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251737732] [2024-01-27 15:29:47,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:47,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:47,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:48,442 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:48,442 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:48,442 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251737732] [2024-01-27 15:29:48,443 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251737732] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:48,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [221446946] [2024-01-27 15:29:48,443 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:48,443 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:48,443 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:48,444 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) [2024-01-27 15:29:48,468 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-01-27 15:29:48,541 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:48,542 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:48,542 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:48,543 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:48,626 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:48,626 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:48,704 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:48,705 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:48,705 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [221446946] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:48,705 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:48,705 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:48,705 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888634630] [2024-01-27 15:29:48,705 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:48,706 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:48,706 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:48,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:48,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:48,706 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:48,707 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 122 transitions, 1543 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:48,707 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:48,707 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:48,707 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:48,973 INFO L124 PetriNetUnfolderBase]: 696/1201 cut-off events. [2024-01-27 15:29:48,973 INFO L125 PetriNetUnfolderBase]: For 6733/6733 co-relation queries the response was YES. [2024-01-27 15:29:48,977 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6369 conditions, 1201 events. 696/1201 cut-off events. For 6733/6733 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 5554 event pairs, 343 based on Foata normal form. 1/1201 useless extension candidates. Maximal degree in co-relation 6324. Up to 913 conditions per place. [2024-01-27 15:29:48,980 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 88 selfloop transitions, 45 changer transitions 14/148 dead transitions. [2024-01-27 15:29:48,980 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 135 places, 148 transitions, 1956 flow [2024-01-27 15:29:48,986 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:29:48,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:29:48,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 111 transitions. [2024-01-27 15:29:48,987 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3171428571428571 [2024-01-27 15:29:48,987 INFO L175 Difference]: Start difference. First operand has 127 places, 122 transitions, 1543 flow. Second operand 10 states and 111 transitions. [2024-01-27 15:29:48,987 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 135 places, 148 transitions, 1956 flow [2024-01-27 15:29:49,002 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 133 places, 148 transitions, 1916 flow, removed 1 selfloop flow, removed 2 redundant places. [2024-01-27 15:29:49,004 INFO L231 Difference]: Finished difference. Result has 134 places, 118 transitions, 1529 flow [2024-01-27 15:29:49,004 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1504, PETRI_DIFFERENCE_MINUEND_PLACES=124, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=122, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=77, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1529, PETRI_PLACES=134, PETRI_TRANSITIONS=118} [2024-01-27 15:29:49,005 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 103 predicate places. [2024-01-27 15:29:49,005 INFO L495 AbstractCegarLoop]: Abstraction has has 134 places, 118 transitions, 1529 flow [2024-01-27 15:29:49,005 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:49,005 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:49,005 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:49,018 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-01-27 15:29:49,209 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:49,209 INFO L420 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:49,209 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:49,209 INFO L85 PathProgramCache]: Analyzing trace with hash -297844658, now seen corresponding path program 10 times [2024-01-27 15:29:49,209 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:49,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347622804] [2024-01-27 15:29:49,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:49,210 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:49,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:49,626 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:49,627 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347622804] [2024-01-27 15:29:49,627 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347622804] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:49,627 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1129193409] [2024-01-27 15:29:49,627 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:29:49,627 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:49,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:49,628 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) [2024-01-27 15:29:49,651 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-01-27 15:29:49,725 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:29:49,725 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:49,726 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 38 conjunts are in the unsatisfiable core [2024-01-27 15:29:49,727 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:49,994 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-01-27 15:29:49,994 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-01-27 15:29:50,061 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:29:50,061 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:50,336 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:29:50,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 90 [2024-01-27 15:29:50,401 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:50,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1129193409] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:50,401 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:50,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [12, 13] total 31 [2024-01-27 15:29:50,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976877794] [2024-01-27 15:29:50,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:50,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:50,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:50,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:50,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=137, Invalid=793, Unknown=0, NotChecked=0, Total=930 [2024-01-27 15:29:50,402 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:50,402 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 134 places, 118 transitions, 1529 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:50,402 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:50,402 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:50,403 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:51,192 INFO L124 PetriNetUnfolderBase]: 709/1222 cut-off events. [2024-01-27 15:29:51,193 INFO L125 PetriNetUnfolderBase]: For 8074/8074 co-relation queries the response was YES. [2024-01-27 15:29:51,197 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6564 conditions, 1222 events. 709/1222 cut-off events. For 8074/8074 co-relation queries the response was YES. Maximal size of possible extension queue 73. Compared 5692 event pairs, 117 based on Foata normal form. 1/1222 useless extension candidates. Maximal degree in co-relation 6518. Up to 731 conditions per place. [2024-01-27 15:29:51,200 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 92 selfloop transitions, 71 changer transitions 6/170 dead transitions. [2024-01-27 15:29:51,200 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 143 places, 170 transitions, 2210 flow [2024-01-27 15:29:51,201 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-27 15:29:51,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-27 15:29:51,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 163 transitions. [2024-01-27 15:29:51,201 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31047619047619046 [2024-01-27 15:29:51,202 INFO L175 Difference]: Start difference. First operand has 134 places, 118 transitions, 1529 flow. Second operand 15 states and 163 transitions. [2024-01-27 15:29:51,202 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 143 places, 170 transitions, 2210 flow [2024-01-27 15:29:51,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 134 places, 170 transitions, 2076 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-27 15:29:51,222 INFO L231 Difference]: Finished difference. Result has 137 places, 123 transitions, 1650 flow [2024-01-27 15:29:51,228 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1406, PETRI_DIFFERENCE_MINUEND_PLACES=120, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1650, PETRI_PLACES=137, PETRI_TRANSITIONS=123} [2024-01-27 15:29:51,228 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 106 predicate places. [2024-01-27 15:29:51,228 INFO L495 AbstractCegarLoop]: Abstraction has has 137 places, 123 transitions, 1650 flow [2024-01-27 15:29:51,228 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:51,228 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:51,229 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:51,239 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Ended with exit code 0 [2024-01-27 15:29:51,429 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:51,429 INFO L420 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:51,429 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:51,429 INFO L85 PathProgramCache]: Analyzing trace with hash -966989036, now seen corresponding path program 11 times [2024-01-27 15:29:51,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:51,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1684638752] [2024-01-27 15:29:51,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:51,430 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:51,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:51,980 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:51,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:51,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1684638752] [2024-01-27 15:29:51,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1684638752] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:51,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [586779506] [2024-01-27 15:29:51,981 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:29:51,981 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:51,981 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:51,982 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:52,004 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-01-27 15:29:52,078 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:29:52,078 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:52,079 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:29:52,080 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:52,344 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:52,344 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:52,415 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:52,416 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:52,746 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:29:52,747 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 122 treesize of output 90 [2024-01-27 15:29:52,802 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:52,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [586779506] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:52,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:52,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:29:52,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1371667765] [2024-01-27 15:29:52,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:52,803 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:52,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:52,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:52,804 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:29:52,804 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:52,804 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 137 places, 123 transitions, 1650 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:52,804 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:52,804 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:52,804 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:53,622 INFO L124 PetriNetUnfolderBase]: 705/1218 cut-off events. [2024-01-27 15:29:53,622 INFO L125 PetriNetUnfolderBase]: For 8058/8058 co-relation queries the response was YES. [2024-01-27 15:29:53,626 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6639 conditions, 1218 events. 705/1218 cut-off events. For 8058/8058 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 5675 event pairs, 115 based on Foata normal form. 1/1218 useless extension candidates. Maximal degree in co-relation 6592. Up to 739 conditions per place. [2024-01-27 15:29:53,628 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 90 selfloop transitions, 69 changer transitions 10/170 dead transitions. [2024-01-27 15:29:53,628 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 150 places, 170 transitions, 2226 flow [2024-01-27 15:29:53,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-01-27 15:29:53,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-01-27 15:29:53,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 162 transitions. [2024-01-27 15:29:53,629 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.30857142857142855 [2024-01-27 15:29:53,629 INFO L175 Difference]: Start difference. First operand has 137 places, 123 transitions, 1650 flow. Second operand 15 states and 162 transitions. [2024-01-27 15:29:53,629 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 150 places, 170 transitions, 2226 flow [2024-01-27 15:29:53,644 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 144 places, 170 transitions, 2120 flow, removed 8 selfloop flow, removed 6 redundant places. [2024-01-27 15:29:53,646 INFO L231 Difference]: Finished difference. Result has 146 places, 123 transitions, 1698 flow [2024-01-27 15:29:53,646 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1552, PETRI_DIFFERENCE_MINUEND_PLACES=130, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=54, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=1698, PETRI_PLACES=146, PETRI_TRANSITIONS=123} [2024-01-27 15:29:53,646 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 115 predicate places. [2024-01-27 15:29:53,646 INFO L495 AbstractCegarLoop]: Abstraction has has 146 places, 123 transitions, 1698 flow [2024-01-27 15:29:53,646 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:53,647 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:53,647 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:53,657 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Ended with exit code 0 [2024-01-27 15:29:53,847 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable32 [2024-01-27 15:29:53,847 INFO L420 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:53,847 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:53,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1507470390, now seen corresponding path program 12 times [2024-01-27 15:29:53,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:53,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [329879879] [2024-01-27 15:29:53,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:53,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:53,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:54,289 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:54,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:54,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [329879879] [2024-01-27 15:29:54,290 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [329879879] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:54,290 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [6625553] [2024-01-27 15:29:54,290 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:29:54,290 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:54,290 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:54,291 INFO L229 MonitoredProcess]: Starting monitored process 27 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:54,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Waiting until timeout for monitored process [2024-01-27 15:29:54,386 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:29:54,386 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:54,387 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:54,387 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:54,478 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:54,479 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:54,557 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:54,557 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:54,557 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [6625553] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:54,557 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:54,557 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:54,557 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046075356] [2024-01-27 15:29:54,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:54,558 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:54,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:54,558 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:54,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=349, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:54,559 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:54,559 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 146 places, 123 transitions, 1698 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:54,559 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:54,559 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:54,559 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:54,890 INFO L124 PetriNetUnfolderBase]: 697/1206 cut-off events. [2024-01-27 15:29:54,890 INFO L125 PetriNetUnfolderBase]: For 7917/7917 co-relation queries the response was YES. [2024-01-27 15:29:54,895 INFO L83 FinitePrefix]: Finished finitePrefix Result has 6569 conditions, 1206 events. 697/1206 cut-off events. For 7917/7917 co-relation queries the response was YES. Maximal size of possible extension queue 70. Compared 5616 event pairs, 335 based on Foata normal form. 1/1206 useless extension candidates. Maximal degree in co-relation 6521. Up to 907 conditions per place. [2024-01-27 15:29:54,898 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 89 selfloop transitions, 45 changer transitions 14/149 dead transitions. [2024-01-27 15:29:54,898 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 149 transitions, 2090 flow [2024-01-27 15:29:54,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:29:54,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:29:54,899 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 114 transitions. [2024-01-27 15:29:54,899 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2961038961038961 [2024-01-27 15:29:54,899 INFO L175 Difference]: Start difference. First operand has 146 places, 123 transitions, 1698 flow. Second operand 11 states and 114 transitions. [2024-01-27 15:29:54,899 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 149 transitions, 2090 flow [2024-01-27 15:29:54,918 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 142 places, 149 transitions, 1939 flow, removed 1 selfloop flow, removed 12 redundant places. [2024-01-27 15:29:54,920 INFO L231 Difference]: Finished difference. Result has 143 places, 118 transitions, 1556 flow [2024-01-27 15:29:54,920 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1547, PETRI_DIFFERENCE_MINUEND_PLACES=132, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=45, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=1556, PETRI_PLACES=143, PETRI_TRANSITIONS=118} [2024-01-27 15:29:54,920 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 112 predicate places. [2024-01-27 15:29:54,920 INFO L495 AbstractCegarLoop]: Abstraction has has 143 places, 118 transitions, 1556 flow [2024-01-27 15:29:54,920 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:54,920 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:54,921 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:54,931 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (27)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:55,121 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable33 [2024-01-27 15:29:55,122 INFO L420 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:55,122 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:55,122 INFO L85 PathProgramCache]: Analyzing trace with hash -423887244, now seen corresponding path program 13 times [2024-01-27 15:29:55,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:55,123 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [137527920] [2024-01-27 15:29:55,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:55,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:55,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:55,539 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:55,539 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:55,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [137527920] [2024-01-27 15:29:55,539 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [137527920] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:55,539 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [371767808] [2024-01-27 15:29:55,539 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 15:29:55,540 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:55,544 INFO L229 MonitoredProcess]: Starting monitored process 28 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:55,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Waiting until timeout for monitored process [2024-01-27 15:29:55,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:55,653 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 31 conjunts are in the unsatisfiable core [2024-01-27 15:29:55,654 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:55,846 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:55,846 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:55,954 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:55,954 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:29:56,345 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:29:56,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-01-27 15:29:56,393 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:56,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [371767808] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:56,394 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:29:56,394 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 12] total 32 [2024-01-27 15:29:56,394 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1446677479] [2024-01-27 15:29:56,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:56,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:56,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:56,395 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:56,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=118, Invalid=874, Unknown=0, NotChecked=0, Total=992 [2024-01-27 15:29:56,395 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:56,395 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 143 places, 118 transitions, 1556 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:56,395 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:56,395 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:56,395 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:57,325 INFO L124 PetriNetUnfolderBase]: 851/1468 cut-off events. [2024-01-27 15:29:57,326 INFO L125 PetriNetUnfolderBase]: For 10597/10597 co-relation queries the response was YES. [2024-01-27 15:29:57,331 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8113 conditions, 1468 events. 851/1468 cut-off events. For 10597/10597 co-relation queries the response was YES. Maximal size of possible extension queue 79. Compared 7061 event pairs, 130 based on Foata normal form. 1/1468 useless extension candidates. Maximal degree in co-relation 8065. Up to 726 conditions per place. [2024-01-27 15:29:57,335 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 128 selfloop transitions, 81 changer transitions 12/222 dead transitions. [2024-01-27 15:29:57,335 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 222 transitions, 2838 flow [2024-01-27 15:29:57,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-01-27 15:29:57,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-01-27 15:29:57,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 190 transitions. [2024-01-27 15:29:57,336 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31932773109243695 [2024-01-27 15:29:57,336 INFO L175 Difference]: Start difference. First operand has 143 places, 118 transitions, 1556 flow. Second operand 17 states and 190 transitions. [2024-01-27 15:29:57,336 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 222 transitions, 2838 flow [2024-01-27 15:29:57,354 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 145 places, 222 transitions, 2700 flow, removed 8 selfloop flow, removed 9 redundant places. [2024-01-27 15:29:57,357 INFO L231 Difference]: Finished difference. Result has 154 places, 154 transitions, 2252 flow [2024-01-27 15:29:57,357 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=1444, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=118, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=58, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=2252, PETRI_PLACES=154, PETRI_TRANSITIONS=154} [2024-01-27 15:29:57,357 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 123 predicate places. [2024-01-27 15:29:57,357 INFO L495 AbstractCegarLoop]: Abstraction has has 154 places, 154 transitions, 2252 flow [2024-01-27 15:29:57,358 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:57,358 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:57,358 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:57,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (28)] Forceful destruction successful, exit code 0 [2024-01-27 15:29:57,560 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-01-27 15:29:57,560 INFO L420 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:57,560 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:57,560 INFO L85 PathProgramCache]: Analyzing trace with hash -2046617442, now seen corresponding path program 14 times [2024-01-27 15:29:57,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:57,561 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1107098003] [2024-01-27 15:29:57,561 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:57,561 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:57,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:58,165 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:58,166 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:58,166 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1107098003] [2024-01-27 15:29:58,166 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1107098003] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:58,167 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1347846073] [2024-01-27 15:29:58,167 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:29:58,167 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:58,167 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:58,168 INFO L229 MonitoredProcess]: Starting monitored process 29 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:58,170 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Waiting until timeout for monitored process [2024-01-27 15:29:58,269 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:29:58,269 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:58,270 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:58,271 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:58,357 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:58,357 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:58,445 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:58,445 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:58,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1347846073] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:58,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:58,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:58,446 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [576383138] [2024-01-27 15:29:58,446 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:58,446 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:58,446 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:58,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:58,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:58,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:58,447 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 154 places, 154 transitions, 2252 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:58,447 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:58,447 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:58,447 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:29:58,767 INFO L124 PetriNetUnfolderBase]: 869/1498 cut-off events. [2024-01-27 15:29:58,767 INFO L125 PetriNetUnfolderBase]: For 12917/12917 co-relation queries the response was YES. [2024-01-27 15:29:58,773 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8882 conditions, 1498 events. 869/1498 cut-off events. For 12917/12917 co-relation queries the response was YES. Maximal size of possible extension queue 82. Compared 7253 event pairs, 347 based on Foata normal form. 1/1498 useless extension candidates. Maximal degree in co-relation 8826. Up to 1003 conditions per place. [2024-01-27 15:29:58,777 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 128 selfloop transitions, 51 changer transitions 17/197 dead transitions. [2024-01-27 15:29:58,777 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 161 places, 197 transitions, 2994 flow [2024-01-27 15:29:58,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:29:58,777 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:29:58,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 112 transitions. [2024-01-27 15:29:58,778 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32 [2024-01-27 15:29:58,778 INFO L175 Difference]: Start difference. First operand has 154 places, 154 transitions, 2252 flow. Second operand 10 states and 112 transitions. [2024-01-27 15:29:58,778 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 161 places, 197 transitions, 2994 flow [2024-01-27 15:29:58,811 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 160 places, 197 transitions, 2782 flow, removed 106 selfloop flow, removed 1 redundant places. [2024-01-27 15:29:58,813 INFO L231 Difference]: Finished difference. Result has 162 places, 157 transitions, 2240 flow [2024-01-27 15:29:58,813 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2082, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=154, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=48, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=105, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2240, PETRI_PLACES=162, PETRI_TRANSITIONS=157} [2024-01-27 15:29:58,814 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 131 predicate places. [2024-01-27 15:29:58,814 INFO L495 AbstractCegarLoop]: Abstraction has has 162 places, 157 transitions, 2240 flow [2024-01-27 15:29:58,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:58,814 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:29:58,814 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:29:58,824 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (29)] Ended with exit code 0 [2024-01-27 15:29:59,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35,29 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:59,015 INFO L420 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:29:59,015 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:29:59,015 INFO L85 PathProgramCache]: Analyzing trace with hash -1207635600, now seen corresponding path program 15 times [2024-01-27 15:29:59,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:29:59,015 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1587774538] [2024-01-27 15:29:59,015 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:29:59,015 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:29:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:29:59,486 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:29:59,486 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:29:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1587774538] [2024-01-27 15:29:59,486 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1587774538] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:29:59,486 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [249811290] [2024-01-27 15:29:59,486 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:29:59,487 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:29:59,487 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:29:59,487 INFO L229 MonitoredProcess]: Starting monitored process 30 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:29:59,488 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Waiting until timeout for monitored process [2024-01-27 15:29:59,587 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-01-27 15:29:59,587 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:29:59,588 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:29:59,589 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:29:59,705 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:29:59,705 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:29:59,766 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:29:59,767 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:29:59,767 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [249811290] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:29:59,767 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:29:59,767 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:29:59,767 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141665745] [2024-01-27 15:29:59,767 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:29:59,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:29:59,767 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:29:59,768 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:29:59,768 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:29:59,768 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:29:59,768 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 162 places, 157 transitions, 2240 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:29:59,768 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:29:59,768 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:29:59,768 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:00,167 INFO L124 PetriNetUnfolderBase]: 883/1524 cut-off events. [2024-01-27 15:30:00,167 INFO L125 PetriNetUnfolderBase]: For 12136/12136 co-relation queries the response was YES. [2024-01-27 15:30:00,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8864 conditions, 1524 events. 883/1524 cut-off events. For 12136/12136 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 7436 event pairs, 345 based on Foata normal form. 1/1524 useless extension candidates. Maximal degree in co-relation 8806. Up to 1007 conditions per place. [2024-01-27 15:30:00,177 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 135 selfloop transitions, 59 changer transitions 11/206 dead transitions. [2024-01-27 15:30:00,177 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 170 places, 206 transitions, 3012 flow [2024-01-27 15:30:00,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:30:00,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:30:00,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 124 transitions. [2024-01-27 15:30:00,178 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.29523809523809524 [2024-01-27 15:30:00,178 INFO L175 Difference]: Start difference. First operand has 162 places, 157 transitions, 2240 flow. Second operand 12 states and 124 transitions. [2024-01-27 15:30:00,178 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 170 places, 206 transitions, 3012 flow [2024-01-27 15:30:00,208 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 166 places, 206 transitions, 2908 flow, removed 2 selfloop flow, removed 4 redundant places. [2024-01-27 15:30:00,211 INFO L231 Difference]: Finished difference. Result has 172 places, 166 transitions, 2431 flow [2024-01-27 15:30:00,211 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2148, PETRI_DIFFERENCE_MINUEND_PLACES=155, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=157, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=103, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2431, PETRI_PLACES=172, PETRI_TRANSITIONS=166} [2024-01-27 15:30:00,211 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 141 predicate places. [2024-01-27 15:30:00,211 INFO L495 AbstractCegarLoop]: Abstraction has has 172 places, 166 transitions, 2431 flow [2024-01-27 15:30:00,212 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:00,212 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:00,212 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:00,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (30)] Ended with exit code 0 [2024-01-27 15:30:00,412 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable36 [2024-01-27 15:30:00,412 INFO L420 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:00,413 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:00,413 INFO L85 PathProgramCache]: Analyzing trace with hash -1732146138, now seen corresponding path program 16 times [2024-01-27 15:30:00,413 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:00,413 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1735947241] [2024-01-27 15:30:00,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:00,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:00,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:00,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1735947241] [2024-01-27 15:30:00,883 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1735947241] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:00,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [515331818] [2024-01-27 15:30:00,883 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:30:00,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:00,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:00,884 INFO L229 MonitoredProcess]: Starting monitored process 31 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:00,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Waiting until timeout for monitored process [2024-01-27 15:30:00,989 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:30:00,989 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:00,990 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 44 conjunts are in the unsatisfiable core [2024-01-27 15:30:00,991 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:01,336 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-01-27 15:30:01,336 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 47 [2024-01-27 15:30:01,402 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:01,402 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:01,723 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:30:01,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 98 treesize of output 82 [2024-01-27 15:30:01,797 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:01,797 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [515331818] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:01,798 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:30:01,798 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [13, 14] total 35 [2024-01-27 15:30:01,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217285830] [2024-01-27 15:30:01,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:01,798 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:01,798 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:01,798 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:01,799 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=140, Invalid=1050, Unknown=0, NotChecked=0, Total=1190 [2024-01-27 15:30:01,799 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:01,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 172 places, 166 transitions, 2431 flow. Second operand has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:01,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:01,799 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:01,799 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:02,915 INFO L124 PetriNetUnfolderBase]: 955/1685 cut-off events. [2024-01-27 15:30:02,916 INFO L125 PetriNetUnfolderBase]: For 14432/14432 co-relation queries the response was YES. [2024-01-27 15:30:02,923 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9617 conditions, 1685 events. 955/1685 cut-off events. For 14432/14432 co-relation queries the response was YES. Maximal size of possible extension queue 94. Compared 8659 event pairs, 131 based on Foata normal form. 1/1685 useless extension candidates. Maximal degree in co-relation 9554. Up to 590 conditions per place. [2024-01-27 15:30:02,928 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 152 selfloop transitions, 92 changer transitions 10/255 dead transitions. [2024-01-27 15:30:02,928 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 187 places, 255 transitions, 3607 flow [2024-01-27 15:30:02,928 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-27 15:30:02,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-27 15:30:02,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 192 transitions. [2024-01-27 15:30:02,929 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2024-01-27 15:30:02,929 INFO L175 Difference]: Start difference. First operand has 172 places, 166 transitions, 2431 flow. Second operand 18 states and 192 transitions. [2024-01-27 15:30:02,929 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 187 places, 255 transitions, 3607 flow [2024-01-27 15:30:02,970 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 255 transitions, 3544 flow, removed 11 selfloop flow, removed 3 redundant places. [2024-01-27 15:30:02,973 INFO L231 Difference]: Finished difference. Result has 191 places, 175 transitions, 2787 flow [2024-01-27 15:30:02,973 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2376, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=166, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=78, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=2787, PETRI_PLACES=191, PETRI_TRANSITIONS=175} [2024-01-27 15:30:02,973 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-01-27 15:30:02,973 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 175 transitions, 2787 flow [2024-01-27 15:30:02,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.5) internal successors, (55), 10 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:02,974 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:02,974 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:02,984 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (31)] Ended with exit code 0 [2024-01-27 15:30:03,174 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 31 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable37 [2024-01-27 15:30:03,174 INFO L420 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:03,174 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:03,175 INFO L85 PathProgramCache]: Analyzing trace with hash 1037498388, now seen corresponding path program 17 times [2024-01-27 15:30:03,175 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:03,175 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1710819359] [2024-01-27 15:30:03,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:03,175 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:03,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:03,664 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:03,665 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:03,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1710819359] [2024-01-27 15:30:03,665 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1710819359] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:03,665 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1029288098] [2024-01-27 15:30:03,665 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:30:03,665 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:03,665 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:03,666 INFO L229 MonitoredProcess]: Starting monitored process 32 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:03,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Waiting until timeout for monitored process [2024-01-27 15:30:03,780 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:30:03,780 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:03,782 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:30:03,783 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:04,080 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:30:04,080 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:30:04,137 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:04,137 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:04,422 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:30:04,422 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-01-27 15:30:04,473 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:04,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1029288098] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:04,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:30:04,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:30:04,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [550623026] [2024-01-27 15:30:04,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:04,474 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:30:04,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:04,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:30:04,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=935, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:30:04,475 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:04,475 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 175 transitions, 2787 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:04,475 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:04,475 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:04,475 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:05,227 INFO L124 PetriNetUnfolderBase]: 941/1652 cut-off events. [2024-01-27 15:30:05,227 INFO L125 PetriNetUnfolderBase]: For 16123/16123 co-relation queries the response was YES. [2024-01-27 15:30:05,234 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9848 conditions, 1652 events. 941/1652 cut-off events. For 16123/16123 co-relation queries the response was YES. Maximal size of possible extension queue 93. Compared 8354 event pairs, 186 based on Foata normal form. 1/1652 useless extension candidates. Maximal degree in co-relation 9780. Up to 946 conditions per place. [2024-01-27 15:30:05,238 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 118 selfloop transitions, 92 changer transitions 10/221 dead transitions. [2024-01-27 15:30:05,239 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 221 transitions, 3414 flow [2024-01-27 15:30:05,239 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:30:05,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:30:05,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 161 transitions. [2024-01-27 15:30:05,239 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32857142857142857 [2024-01-27 15:30:05,239 INFO L175 Difference]: Start difference. First operand has 191 places, 175 transitions, 2787 flow. Second operand 14 states and 161 transitions. [2024-01-27 15:30:05,239 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 221 transitions, 3414 flow [2024-01-27 15:30:05,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 221 transitions, 3278 flow, removed 21 selfloop flow, removed 9 redundant places. [2024-01-27 15:30:05,286 INFO L231 Difference]: Finished difference. Result has 194 places, 173 transitions, 2820 flow [2024-01-27 15:30:05,287 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2651, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=92, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2820, PETRI_PLACES=194, PETRI_TRANSITIONS=173} [2024-01-27 15:30:05,287 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-01-27 15:30:05,287 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 173 transitions, 2820 flow [2024-01-27 15:30:05,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:05,287 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:05,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:05,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (32)] Forceful destruction successful, exit code 0 [2024-01-27 15:30:05,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 32 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-01-27 15:30:05,489 INFO L420 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:05,489 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:05,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1467498828, now seen corresponding path program 18 times [2024-01-27 15:30:05,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:05,490 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1583404003] [2024-01-27 15:30:05,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:05,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:05,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:06,056 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:06,057 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:06,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1583404003] [2024-01-27 15:30:06,057 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1583404003] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:06,057 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1553696771] [2024-01-27 15:30:06,057 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:30:06,057 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:06,058 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:06,058 INFO L229 MonitoredProcess]: Starting monitored process 33 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:06,089 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Waiting until timeout for monitored process [2024-01-27 15:30:06,186 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-01-27 15:30:06,186 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:06,187 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:30:06,188 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:06,342 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:30:06,342 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:30:06,399 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:06,399 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:30:06,399 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1553696771] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:06,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:30:06,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:30:06,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378772845] [2024-01-27 15:30:06,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:06,400 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:30:06,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:06,400 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:30:06,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=363, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:30:06,400 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:06,401 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 173 transitions, 2820 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:06,401 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:06,401 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:06,401 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:06,855 INFO L124 PetriNetUnfolderBase]: 929/1634 cut-off events. [2024-01-27 15:30:06,855 INFO L125 PetriNetUnfolderBase]: For 14834/14834 co-relation queries the response was YES. [2024-01-27 15:30:06,863 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9770 conditions, 1634 events. 929/1634 cut-off events. For 14834/14834 co-relation queries the response was YES. Maximal size of possible extension queue 92. Compared 8273 event pairs, 317 based on Foata normal form. 1/1634 useless extension candidates. Maximal degree in co-relation 9704. Up to 859 conditions per place. [2024-01-27 15:30:06,867 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 152 selfloop transitions, 58 changer transitions 19/230 dead transitions. [2024-01-27 15:30:06,867 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 230 transitions, 3589 flow [2024-01-27 15:30:06,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-01-27 15:30:06,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-01-27 15:30:06,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 140 transitions. [2024-01-27 15:30:06,868 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3076923076923077 [2024-01-27 15:30:06,868 INFO L175 Difference]: Start difference. First operand has 194 places, 173 transitions, 2820 flow. Second operand 13 states and 140 transitions. [2024-01-27 15:30:06,868 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 230 transitions, 3589 flow [2024-01-27 15:30:06,907 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 191 places, 230 transitions, 3397 flow, removed 3 selfloop flow, removed 13 redundant places. [2024-01-27 15:30:06,910 INFO L231 Difference]: Finished difference. Result has 195 places, 171 transitions, 2742 flow [2024-01-27 15:30:06,910 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2630, PETRI_DIFFERENCE_MINUEND_PLACES=179, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=173, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=115, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=2742, PETRI_PLACES=195, PETRI_TRANSITIONS=171} [2024-01-27 15:30:06,910 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-01-27 15:30:06,911 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 171 transitions, 2742 flow [2024-01-27 15:30:06,911 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:06,911 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:06,911 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:06,921 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (33)] Ended with exit code 0 [2024-01-27 15:30:07,120 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 33 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-01-27 15:30:07,120 INFO L420 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:07,120 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:07,121 INFO L85 PathProgramCache]: Analyzing trace with hash -1527550220, now seen corresponding path program 19 times [2024-01-27 15:30:07,121 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:07,121 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [616929004] [2024-01-27 15:30:07,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:07,121 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:07,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:07,598 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:07,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [616929004] [2024-01-27 15:30:07,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [616929004] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:07,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1187584609] [2024-01-27 15:30:07,599 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 15:30:07,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:07,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:07,600 INFO L229 MonitoredProcess]: Starting monitored process 34 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:07,635 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Waiting until timeout for monitored process [2024-01-27 15:30:07,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:07,733 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 40 conjunts are in the unsatisfiable core [2024-01-27 15:30:07,734 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:07,958 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:30:07,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:30:08,065 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:08,065 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:08,472 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:30:08,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 103 treesize of output 71 [2024-01-27 15:30:08,519 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:08,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1187584609] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:08,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:30:08,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13, 13] total 33 [2024-01-27 15:30:08,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1456748719] [2024-01-27 15:30:08,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:08,520 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:30:08,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:08,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:30:08,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=119, Invalid=937, Unknown=0, NotChecked=0, Total=1056 [2024-01-27 15:30:08,520 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:08,520 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 171 transitions, 2742 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:08,521 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:08,521 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:08,521 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:09,270 INFO L124 PetriNetUnfolderBase]: 904/1582 cut-off events. [2024-01-27 15:30:09,270 INFO L125 PetriNetUnfolderBase]: For 14854/14854 co-relation queries the response was YES. [2024-01-27 15:30:09,277 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9444 conditions, 1582 events. 904/1582 cut-off events. For 14854/14854 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7866 event pairs, 178 based on Foata normal form. 1/1582 useless extension candidates. Maximal degree in co-relation 9375. Up to 902 conditions per place. [2024-01-27 15:30:09,281 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 117 selfloop transitions, 85 changer transitions 12/215 dead transitions. [2024-01-27 15:30:09,281 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 215 transitions, 3352 flow [2024-01-27 15:30:09,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-01-27 15:30:09,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-01-27 15:30:09,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 156 transitions. [2024-01-27 15:30:09,282 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3183673469387755 [2024-01-27 15:30:09,282 INFO L175 Difference]: Start difference. First operand has 195 places, 171 transitions, 2742 flow. Second operand 14 states and 156 transitions. [2024-01-27 15:30:09,282 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 215 transitions, 3352 flow [2024-01-27 15:30:09,320 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 193 places, 215 transitions, 3218 flow, removed 13 selfloop flow, removed 9 redundant places. [2024-01-27 15:30:09,323 INFO L231 Difference]: Finished difference. Result has 194 places, 168 transitions, 2739 flow [2024-01-27 15:30:09,323 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2608, PETRI_DIFFERENCE_MINUEND_PLACES=180, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=171, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=86, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=2739, PETRI_PLACES=194, PETRI_TRANSITIONS=168} [2024-01-27 15:30:09,323 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 163 predicate places. [2024-01-27 15:30:09,323 INFO L495 AbstractCegarLoop]: Abstraction has has 194 places, 168 transitions, 2739 flow [2024-01-27 15:30:09,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:09,323 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:09,324 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:09,334 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (34)] Ended with exit code 0 [2024-01-27 15:30:09,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 34 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable40 [2024-01-27 15:30:09,524 INFO L420 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:09,524 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash 1478567124, now seen corresponding path program 20 times [2024-01-27 15:30:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1312221973] [2024-01-27 15:30:09,524 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:09,524 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:09,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:09,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:09,994 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:09,994 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1312221973] [2024-01-27 15:30:09,994 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1312221973] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:09,995 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [43590409] [2024-01-27 15:30:09,995 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:30:09,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:09,995 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:09,996 INFO L229 MonitoredProcess]: Starting monitored process 35 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:10,016 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Waiting until timeout for monitored process [2024-01-27 15:30:10,117 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-01-27 15:30:10,118 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:10,119 INFO L262 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:30:10,120 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:10,206 INFO L349 Elim1Store]: treesize reduction 3, result has 75.0 percent of original size [2024-01-27 15:30:10,206 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 83 treesize of output 52 [2024-01-27 15:30:10,294 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:10,295 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-01-27 15:30:10,295 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [43590409] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:10,295 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-01-27 15:30:10,295 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 21 [2024-01-27 15:30:10,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260471044] [2024-01-27 15:30:10,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:10,295 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-01-27 15:30:10,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:10,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-01-27 15:30:10,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=352, Unknown=0, NotChecked=0, Total=420 [2024-01-27 15:30:10,296 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:10,296 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 194 places, 168 transitions, 2739 flow. Second operand has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:10,296 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:10,296 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:10,297 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:10,687 INFO L124 PetriNetUnfolderBase]: 891/1548 cut-off events. [2024-01-27 15:30:10,688 INFO L125 PetriNetUnfolderBase]: For 13870/13870 co-relation queries the response was YES. [2024-01-27 15:30:10,695 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9347 conditions, 1548 events. 891/1548 cut-off events. For 13870/13870 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 7591 event pairs, 369 based on Foata normal form. 1/1548 useless extension candidates. Maximal degree in co-relation 9280. Up to 1071 conditions per place. [2024-01-27 15:30:10,699 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 137 selfloop transitions, 50 changer transitions 14/202 dead transitions. [2024-01-27 15:30:10,699 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 198 places, 202 transitions, 3273 flow [2024-01-27 15:30:10,699 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:10,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:10,700 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 115 transitions. [2024-01-27 15:30:10,700 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2987012987012987 [2024-01-27 15:30:10,700 INFO L175 Difference]: Start difference. First operand has 194 places, 168 transitions, 2739 flow. Second operand 11 states and 115 transitions. [2024-01-27 15:30:10,700 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 198 places, 202 transitions, 3273 flow [2024-01-27 15:30:10,739 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 202 transitions, 3101 flow, removed 1 selfloop flow, removed 11 redundant places. [2024-01-27 15:30:10,742 INFO L231 Difference]: Finished difference. Result has 188 places, 165 transitions, 2621 flow [2024-01-27 15:30:10,742 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2567, PETRI_DIFFERENCE_MINUEND_PLACES=177, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=50, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2621, PETRI_PLACES=188, PETRI_TRANSITIONS=165} [2024-01-27 15:30:10,742 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-01-27 15:30:10,743 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 165 transitions, 2621 flow [2024-01-27 15:30:10,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.777777777777778) internal successors, (52), 9 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:10,743 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:10,743 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:10,753 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (35)] Ended with exit code 0 [2024-01-27 15:30:10,943 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41,35 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:10,943 INFO L420 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:10,944 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:10,944 INFO L85 PathProgramCache]: Analyzing trace with hash -1629797956, now seen corresponding path program 1 times [2024-01-27 15:30:10,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:10,944 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1369891240] [2024-01-27 15:30:10,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:10,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:10,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:11,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:11,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1369891240] [2024-01-27 15:30:11,110 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1369891240] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:11,110 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [612489707] [2024-01-27 15:30:11,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:11,110 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:11,110 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:11,111 INFO L229 MonitoredProcess]: Starting monitored process 36 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:11,121 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Waiting until timeout for monitored process [2024-01-27 15:30:11,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:11,221 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-27 15:30:11,222 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:11,267 INFO L349 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2024-01-27 15:30:11,267 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-01-27 15:30:11,274 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:11,274 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:11,335 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:30:11,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-01-27 15:30:11,344 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:11,345 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [612489707] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:11,345 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:11,345 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 17 [2024-01-27 15:30:11,345 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934851885] [2024-01-27 15:30:11,345 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:11,345 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-27 15:30:11,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:11,346 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-27 15:30:11,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:30:11,346 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:11,346 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 165 transitions, 2621 flow. Second operand has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:11,346 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:11,346 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:11,346 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:11,757 INFO L124 PetriNetUnfolderBase]: 932/1608 cut-off events. [2024-01-27 15:30:11,757 INFO L125 PetriNetUnfolderBase]: For 15393/15393 co-relation queries the response was YES. [2024-01-27 15:30:11,764 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9698 conditions, 1608 events. 932/1608 cut-off events. For 15393/15393 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7968 event pairs, 211 based on Foata normal form. 20/1627 useless extension candidates. Maximal degree in co-relation 9631. Up to 758 conditions per place. [2024-01-27 15:30:11,768 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 169 selfloop transitions, 64 changer transitions 0/234 dead transitions. [2024-01-27 15:30:11,768 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 234 transitions, 3612 flow [2024-01-27 15:30:11,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:11,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:11,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 123 transitions. [2024-01-27 15:30:11,769 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3514285714285714 [2024-01-27 15:30:11,769 INFO L175 Difference]: Start difference. First operand has 188 places, 165 transitions, 2621 flow. Second operand 10 states and 123 transitions. [2024-01-27 15:30:11,769 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 234 transitions, 3612 flow [2024-01-27 15:30:11,803 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 234 transitions, 3436 flow, removed 8 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:11,805 INFO L231 Difference]: Finished difference. Result has 184 places, 168 transitions, 2655 flow [2024-01-27 15:30:11,805 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2467, PETRI_DIFFERENCE_MINUEND_PLACES=173, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=101, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2655, PETRI_PLACES=184, PETRI_TRANSITIONS=168} [2024-01-27 15:30:11,806 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 153 predicate places. [2024-01-27 15:30:11,806 INFO L495 AbstractCegarLoop]: Abstraction has has 184 places, 168 transitions, 2655 flow [2024-01-27 15:30:11,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0) internal successors, (102), 17 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:11,806 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:11,806 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:11,816 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (36)] Ended with exit code 0 [2024-01-27 15:30:12,006 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 36 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable42 [2024-01-27 15:30:12,007 INFO L420 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:12,007 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:12,007 INFO L85 PathProgramCache]: Analyzing trace with hash -1916718656, now seen corresponding path program 1 times [2024-01-27 15:30:12,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:12,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1999088695] [2024-01-27 15:30:12,007 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:12,007 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:12,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:12,163 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:12,163 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:12,163 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1999088695] [2024-01-27 15:30:12,163 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1999088695] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:12,163 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:12,163 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:12,164 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1199637452] [2024-01-27 15:30:12,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:12,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:12,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:12,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:12,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:12,165 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:12,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 168 transitions, 2655 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:12,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:12,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:12,165 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:12,505 INFO L124 PetriNetUnfolderBase]: 918/1594 cut-off events. [2024-01-27 15:30:12,505 INFO L125 PetriNetUnfolderBase]: For 14281/14281 co-relation queries the response was YES. [2024-01-27 15:30:12,512 INFO L83 FinitePrefix]: Finished finitePrefix Result has 9635 conditions, 1594 events. 918/1594 cut-off events. For 14281/14281 co-relation queries the response was YES. Maximal size of possible extension queue 95. Compared 7969 event pairs, 337 based on Foata normal form. 14/1608 useless extension candidates. Maximal degree in co-relation 9567. Up to 970 conditions per place. [2024-01-27 15:30:12,516 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 145 selfloop transitions, 56 changer transitions 22/224 dead transitions. [2024-01-27 15:30:12,516 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 195 places, 224 transitions, 3346 flow [2024-01-27 15:30:12,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:30:12,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:30:12,516 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 134 transitions. [2024-01-27 15:30:12,517 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.319047619047619 [2024-01-27 15:30:12,517 INFO L175 Difference]: Start difference. First operand has 184 places, 168 transitions, 2655 flow. Second operand 12 states and 134 transitions. [2024-01-27 15:30:12,517 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 195 places, 224 transitions, 3346 flow [2024-01-27 15:30:12,552 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 186 places, 224 transitions, 3157 flow, removed 15 selfloop flow, removed 9 redundant places. [2024-01-27 15:30:12,554 INFO L231 Difference]: Finished difference. Result has 188 places, 161 transitions, 2461 flow [2024-01-27 15:30:12,554 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2411, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=165, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2461, PETRI_PLACES=188, PETRI_TRANSITIONS=161} [2024-01-27 15:30:12,555 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 157 predicate places. [2024-01-27 15:30:12,555 INFO L495 AbstractCegarLoop]: Abstraction has has 188 places, 161 transitions, 2461 flow [2024-01-27 15:30:12,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:12,555 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:12,555 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:12,555 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable43 [2024-01-27 15:30:12,555 INFO L420 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:12,555 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:12,555 INFO L85 PathProgramCache]: Analyzing trace with hash -1334211708, now seen corresponding path program 2 times [2024-01-27 15:30:12,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:12,555 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754025797] [2024-01-27 15:30:12,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:12,556 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:12,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:12,719 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:12,719 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:12,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754025797] [2024-01-27 15:30:12,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754025797] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:12,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:12,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:12,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120631486] [2024-01-27 15:30:12,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:12,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:12,720 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:12,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:12,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:12,721 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:12,721 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 188 places, 161 transitions, 2461 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:12,721 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:12,721 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:12,721 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:13,010 INFO L124 PetriNetUnfolderBase]: 986/1682 cut-off events. [2024-01-27 15:30:13,010 INFO L125 PetriNetUnfolderBase]: For 15713/15713 co-relation queries the response was YES. [2024-01-27 15:30:13,018 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10383 conditions, 1682 events. 986/1682 cut-off events. For 15713/15713 co-relation queries the response was YES. Maximal size of possible extension queue 100. Compared 8305 event pairs, 425 based on Foata normal form. 12/1694 useless extension candidates. Maximal degree in co-relation 10316. Up to 1240 conditions per place. [2024-01-27 15:30:13,022 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 144 selfloop transitions, 62 changer transitions 0/207 dead transitions. [2024-01-27 15:30:13,022 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 207 transitions, 3419 flow [2024-01-27 15:30:13,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:13,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:13,023 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 105 transitions. [2024-01-27 15:30:13,023 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3333333333333333 [2024-01-27 15:30:13,023 INFO L175 Difference]: Start difference. First operand has 188 places, 161 transitions, 2461 flow. Second operand 9 states and 105 transitions. [2024-01-27 15:30:13,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 207 transitions, 3419 flow [2024-01-27 15:30:13,056 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 178 places, 207 transitions, 3266 flow, removed 14 selfloop flow, removed 11 redundant places. [2024-01-27 15:30:13,059 INFO L231 Difference]: Finished difference. Result has 180 places, 168 transitions, 2621 flow [2024-01-27 15:30:13,059 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2337, PETRI_DIFFERENCE_MINUEND_PLACES=170, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=161, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=104, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=2621, PETRI_PLACES=180, PETRI_TRANSITIONS=168} [2024-01-27 15:30:13,059 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 149 predicate places. [2024-01-27 15:30:13,059 INFO L495 AbstractCegarLoop]: Abstraction has has 180 places, 168 transitions, 2621 flow [2024-01-27 15:30:13,060 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:13,060 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:13,060 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:13,060 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44 [2024-01-27 15:30:13,060 INFO L420 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:13,060 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:13,060 INFO L85 PathProgramCache]: Analyzing trace with hash 2078907244, now seen corresponding path program 2 times [2024-01-27 15:30:13,060 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:13,060 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1115749846] [2024-01-27 15:30:13,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:13,060 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:13,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:13,222 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:13,223 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1115749846] [2024-01-27 15:30:13,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1115749846] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:13,223 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1608260679] [2024-01-27 15:30:13,223 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:30:13,223 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:13,224 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:13,232 INFO L229 MonitoredProcess]: Starting monitored process 37 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:13,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Waiting until timeout for monitored process [2024-01-27 15:30:13,342 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:30:13,342 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:13,343 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:30:13,344 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:13,409 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-01-27 15:30:13,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-01-27 15:30:13,418 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:13,418 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:13,485 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:30:13,485 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-01-27 15:30:13,499 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:13,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1608260679] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:13,500 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:13,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 17 [2024-01-27 15:30:13,500 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578823927] [2024-01-27 15:30:13,500 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:13,500 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-01-27 15:30:13,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:13,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-01-27 15:30:13,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=212, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:30:13,501 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:13,501 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 180 places, 168 transitions, 2621 flow. Second operand has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:13,502 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:13,502 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:13,502 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:14,054 INFO L124 PetriNetUnfolderBase]: 1458/2484 cut-off events. [2024-01-27 15:30:14,054 INFO L125 PetriNetUnfolderBase]: For 20404/20404 co-relation queries the response was YES. [2024-01-27 15:30:14,065 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14564 conditions, 2484 events. 1458/2484 cut-off events. For 20404/20404 co-relation queries the response was YES. Maximal size of possible extension queue 132. Compared 13332 event pairs, 451 based on Foata normal form. 20/2504 useless extension candidates. Maximal degree in co-relation 14500. Up to 1190 conditions per place. [2024-01-27 15:30:14,072 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 200 selfloop transitions, 83 changer transitions 0/284 dead transitions. [2024-01-27 15:30:14,072 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 191 places, 284 transitions, 4255 flow [2024-01-27 15:30:14,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:30:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:30:14,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 153 transitions. [2024-01-27 15:30:14,073 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.36428571428571427 [2024-01-27 15:30:14,073 INFO L175 Difference]: Start difference. First operand has 180 places, 168 transitions, 2621 flow. Second operand 12 states and 153 transitions. [2024-01-27 15:30:14,073 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 191 places, 284 transitions, 4255 flow [2024-01-27 15:30:14,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 187 places, 284 transitions, 4165 flow, removed 13 selfloop flow, removed 4 redundant places. [2024-01-27 15:30:14,126 INFO L231 Difference]: Finished difference. Result has 191 places, 184 transitions, 2994 flow [2024-01-27 15:30:14,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2533, PETRI_DIFFERENCE_MINUEND_PLACES=176, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=168, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=2994, PETRI_PLACES=191, PETRI_TRANSITIONS=184} [2024-01-27 15:30:14,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 160 predicate places. [2024-01-27 15:30:14,126 INFO L495 AbstractCegarLoop]: Abstraction has has 191 places, 184 transitions, 2994 flow [2024-01-27 15:30:14,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 6.0588235294117645) internal successors, (103), 17 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:14,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:14,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:14,137 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (37)] Ended with exit code 0 [2024-01-27 15:30:14,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,37 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:14,327 INFO L420 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:14,327 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:14,327 INFO L85 PathProgramCache]: Analyzing trace with hash -172909656, now seen corresponding path program 3 times [2024-01-27 15:30:14,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:14,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809431137] [2024-01-27 15:30:14,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:14,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:14,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:14,497 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:14,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:14,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809431137] [2024-01-27 15:30:14,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809431137] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:14,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:14,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:14,497 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1314122928] [2024-01-27 15:30:14,497 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:14,498 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:14,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:14,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:14,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:14,498 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:14,498 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 184 transitions, 2994 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:14,498 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:14,498 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:14,498 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:14,858 INFO L124 PetriNetUnfolderBase]: 1478/2516 cut-off events. [2024-01-27 15:30:14,858 INFO L125 PetriNetUnfolderBase]: For 24907/24907 co-relation queries the response was YES. [2024-01-27 15:30:14,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15537 conditions, 2516 events. 1478/2516 cut-off events. For 24907/24907 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13461 event pairs, 693 based on Foata normal form. 12/2528 useless extension candidates. Maximal degree in co-relation 15469. Up to 2050 conditions per place. [2024-01-27 15:30:14,878 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 148 selfloop transitions, 70 changer transitions 0/219 dead transitions. [2024-01-27 15:30:14,878 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 199 places, 219 transitions, 3697 flow [2024-01-27 15:30:14,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:14,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:14,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-01-27 15:30:14,879 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2024-01-27 15:30:14,879 INFO L175 Difference]: Start difference. First operand has 191 places, 184 transitions, 2994 flow. Second operand 9 states and 101 transitions. [2024-01-27 15:30:14,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 199 places, 219 transitions, 3697 flow [2024-01-27 15:30:14,944 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 192 places, 219 transitions, 3552 flow, removed 14 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:14,947 INFO L231 Difference]: Finished difference. Result has 193 places, 187 transitions, 3054 flow [2024-01-27 15:30:14,947 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2851, PETRI_DIFFERENCE_MINUEND_PLACES=184, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=184, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=116, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3054, PETRI_PLACES=193, PETRI_TRANSITIONS=187} [2024-01-27 15:30:14,947 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 162 predicate places. [2024-01-27 15:30:14,948 INFO L495 AbstractCegarLoop]: Abstraction has has 193 places, 187 transitions, 3054 flow [2024-01-27 15:30:14,948 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:14,948 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:14,948 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:14,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-01-27 15:30:14,948 INFO L420 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:14,948 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:14,949 INFO L85 PathProgramCache]: Analyzing trace with hash -1259000832, now seen corresponding path program 4 times [2024-01-27 15:30:14,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:14,949 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532705054] [2024-01-27 15:30:14,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:14,949 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:14,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:15,109 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:15,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:15,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532705054] [2024-01-27 15:30:15,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532705054] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:15,109 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:15,110 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:15,110 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2013949681] [2024-01-27 15:30:15,110 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:15,110 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:15,110 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:15,110 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:15,110 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:15,110 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:15,111 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 193 places, 187 transitions, 3054 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:15,111 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:15,111 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:15,111 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:15,587 INFO L124 PetriNetUnfolderBase]: 1470/2508 cut-off events. [2024-01-27 15:30:15,587 INFO L125 PetriNetUnfolderBase]: For 23030/23030 co-relation queries the response was YES. [2024-01-27 15:30:15,600 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15317 conditions, 2508 events. 1470/2508 cut-off events. For 23030/23030 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13485 event pairs, 671 based on Foata normal form. 8/2516 useless extension candidates. Maximal degree in co-relation 15248. Up to 2014 conditions per place. [2024-01-27 15:30:15,609 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 142 selfloop transitions, 67 changer transitions 10/220 dead transitions. [2024-01-27 15:30:15,609 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 220 transitions, 3624 flow [2024-01-27 15:30:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:15,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:15,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 113 transitions. [2024-01-27 15:30:15,610 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2935064935064935 [2024-01-27 15:30:15,610 INFO L175 Difference]: Start difference. First operand has 193 places, 187 transitions, 3054 flow. Second operand 11 states and 113 transitions. [2024-01-27 15:30:15,610 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 220 transitions, 3624 flow [2024-01-27 15:30:15,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 220 transitions, 3488 flow, removed 4 selfloop flow, removed 5 redundant places. [2024-01-27 15:30:15,691 INFO L231 Difference]: Finished difference. Result has 200 places, 182 transitions, 2962 flow [2024-01-27 15:30:15,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2879, PETRI_DIFFERENCE_MINUEND_PLACES=188, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=67, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=118, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=2962, PETRI_PLACES=200, PETRI_TRANSITIONS=182} [2024-01-27 15:30:15,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-01-27 15:30:15,692 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 182 transitions, 2962 flow [2024-01-27 15:30:15,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:15,692 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:15,692 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:15,692 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable47 [2024-01-27 15:30:15,692 INFO L420 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:15,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:15,693 INFO L85 PathProgramCache]: Analyzing trace with hash -33521386, now seen corresponding path program 3 times [2024-01-27 15:30:15,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:15,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [843670949] [2024-01-27 15:30:15,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:15,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:15,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:15,882 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:15,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [843670949] [2024-01-27 15:30:15,882 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [843670949] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:15,882 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [598895799] [2024-01-27 15:30:15,883 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:30:15,883 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:15,883 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:15,884 INFO L229 MonitoredProcess]: Starting monitored process 38 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:15,884 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Waiting until timeout for monitored process [2024-01-27 15:30:16,004 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 15:30:16,004 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:16,006 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:30:16,006 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:16,061 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:30:16,062 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-01-27 15:30:16,078 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:16,079 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:16,147 INFO L349 Elim1Store]: treesize reduction 28, result has 59.4 percent of original size [2024-01-27 15:30:16,147 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 32 treesize of output 48 [2024-01-27 15:30:16,161 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:16,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [598895799] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:16,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:16,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 18 [2024-01-27 15:30:16,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700187503] [2024-01-27 15:30:16,161 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:16,161 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-27 15:30:16,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:16,162 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-27 15:30:16,162 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-01-27 15:30:16,162 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:16,163 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 182 transitions, 2962 flow. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:16,163 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:16,163 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:16,163 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:16,913 INFO L124 PetriNetUnfolderBase]: 1660/2877 cut-off events. [2024-01-27 15:30:16,914 INFO L125 PetriNetUnfolderBase]: For 25508/25508 co-relation queries the response was YES. [2024-01-27 15:30:16,929 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16680 conditions, 2877 events. 1660/2877 cut-off events. For 25508/25508 co-relation queries the response was YES. Maximal size of possible extension queue 144. Compared 16264 event pairs, 555 based on Foata normal form. 30/2907 useless extension candidates. Maximal degree in co-relation 16609. Up to 1578 conditions per place. [2024-01-27 15:30:16,937 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 226 selfloop transitions, 91 changer transitions 0/318 dead transitions. [2024-01-27 15:30:16,937 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 318 transitions, 4626 flow [2024-01-27 15:30:16,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-01-27 15:30:16,938 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-01-27 15:30:16,938 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 203 transitions. [2024-01-27 15:30:16,938 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32222222222222224 [2024-01-27 15:30:16,938 INFO L175 Difference]: Start difference. First operand has 200 places, 182 transitions, 2962 flow. Second operand 18 states and 203 transitions. [2024-01-27 15:30:16,938 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 318 transitions, 4626 flow [2024-01-27 15:30:17,005 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 318 transitions, 4434 flow, removed 24 selfloop flow, removed 12 redundant places. [2024-01-27 15:30:17,008 INFO L231 Difference]: Finished difference. Result has 209 places, 198 transitions, 3242 flow [2024-01-27 15:30:17,009 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2796, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=98, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=3242, PETRI_PLACES=209, PETRI_TRANSITIONS=198} [2024-01-27 15:30:17,009 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-01-27 15:30:17,009 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 198 transitions, 3242 flow [2024-01-27 15:30:17,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:17,009 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:17,009 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:17,020 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (38)] Ended with exit code 0 [2024-01-27 15:30:17,210 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 38 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-01-27 15:30:17,210 INFO L420 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:17,210 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:17,210 INFO L85 PathProgramCache]: Analyzing trace with hash -327347174, now seen corresponding path program 5 times [2024-01-27 15:30:17,210 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:17,210 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [744688732] [2024-01-27 15:30:17,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:17,211 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:17,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:17,384 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:17,384 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:17,384 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [744688732] [2024-01-27 15:30:17,384 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [744688732] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:17,384 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:17,384 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:17,385 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1422848786] [2024-01-27 15:30:17,385 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:17,385 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:17,385 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:17,385 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:17,385 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:17,386 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:17,386 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 198 transitions, 3242 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:17,386 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:17,386 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:17,386 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:17,850 INFO L124 PetriNetUnfolderBase]: 1652/2869 cut-off events. [2024-01-27 15:30:17,850 INFO L125 PetriNetUnfolderBase]: For 24510/24510 co-relation queries the response was YES. [2024-01-27 15:30:17,866 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16801 conditions, 2869 events. 1652/2869 cut-off events. For 24510/24510 co-relation queries the response was YES. Maximal size of possible extension queue 145. Compared 16178 event pairs, 837 based on Foata normal form. 8/2877 useless extension candidates. Maximal degree in co-relation 16728. Up to 2400 conditions per place. [2024-01-27 15:30:17,874 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 152 selfloop transitions, 65 changer transitions 7/225 dead transitions. [2024-01-27 15:30:17,874 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 225 transitions, 3793 flow [2024-01-27 15:30:17,874 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:17,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:17,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-01-27 15:30:17,875 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2914285714285714 [2024-01-27 15:30:17,875 INFO L175 Difference]: Start difference. First operand has 209 places, 198 transitions, 3242 flow. Second operand 10 states and 102 transitions. [2024-01-27 15:30:17,875 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 225 transitions, 3793 flow [2024-01-27 15:30:17,952 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 208 places, 225 transitions, 3717 flow, removed 7 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:17,955 INFO L231 Difference]: Finished difference. Result has 208 places, 194 transitions, 3218 flow [2024-01-27 15:30:17,956 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3128, PETRI_DIFFERENCE_MINUEND_PLACES=199, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3218, PETRI_PLACES=208, PETRI_TRANSITIONS=194} [2024-01-27 15:30:17,959 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 177 predicate places. [2024-01-27 15:30:17,959 INFO L495 AbstractCegarLoop]: Abstraction has has 208 places, 194 transitions, 3218 flow [2024-01-27 15:30:17,959 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:17,959 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:17,960 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:17,960 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-01-27 15:30:17,960 INFO L420 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:17,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:17,960 INFO L85 PathProgramCache]: Analyzing trace with hash 1425887610, now seen corresponding path program 4 times [2024-01-27 15:30:17,960 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:17,960 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1746909341] [2024-01-27 15:30:17,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:17,960 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:17,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:18,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:18,131 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:18,131 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1746909341] [2024-01-27 15:30:18,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1746909341] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:18,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:18,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:18,131 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118775673] [2024-01-27 15:30:18,131 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:18,132 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:18,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:18,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:18,132 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:18,132 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:18,133 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 208 places, 194 transitions, 3218 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:18,133 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:18,133 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:18,133 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:18,586 INFO L124 PetriNetUnfolderBase]: 1511/2575 cut-off events. [2024-01-27 15:30:18,586 INFO L125 PetriNetUnfolderBase]: For 23896/23896 co-relation queries the response was YES. [2024-01-27 15:30:18,599 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15687 conditions, 2575 events. 1511/2575 cut-off events. For 23896/23896 co-relation queries the response was YES. Maximal size of possible extension queue 134. Compared 13852 event pairs, 699 based on Foata normal form. 6/2581 useless extension candidates. Maximal degree in co-relation 15615. Up to 2122 conditions per place. [2024-01-27 15:30:18,607 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 148 selfloop transitions, 61 changer transitions 5/215 dead transitions. [2024-01-27 15:30:18,607 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 211 places, 215 transitions, 3666 flow [2024-01-27 15:30:18,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:18,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:18,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-01-27 15:30:18,608 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-01-27 15:30:18,608 INFO L175 Difference]: Start difference. First operand has 208 places, 194 transitions, 3218 flow. Second operand 10 states and 98 transitions. [2024-01-27 15:30:18,608 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 211 places, 215 transitions, 3666 flow [2024-01-27 15:30:18,675 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 215 transitions, 3498 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:18,678 INFO L231 Difference]: Finished difference. Result has 201 places, 186 transitions, 3003 flow [2024-01-27 15:30:18,679 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2934, PETRI_DIFFERENCE_MINUEND_PLACES=192, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3003, PETRI_PLACES=201, PETRI_TRANSITIONS=186} [2024-01-27 15:30:18,679 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 170 predicate places. [2024-01-27 15:30:18,679 INFO L495 AbstractCegarLoop]: Abstraction has has 201 places, 186 transitions, 3003 flow [2024-01-27 15:30:18,679 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:18,679 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:18,679 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:18,679 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50 [2024-01-27 15:30:18,680 INFO L420 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:18,680 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:18,680 INFO L85 PathProgramCache]: Analyzing trace with hash 1618573412, now seen corresponding path program 6 times [2024-01-27 15:30:18,680 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:18,680 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [841514426] [2024-01-27 15:30:18,680 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:18,680 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:18,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:18,849 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:18,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:18,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [841514426] [2024-01-27 15:30:18,850 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [841514426] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:18,850 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:18,850 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:18,850 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [103469288] [2024-01-27 15:30:18,850 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:18,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:18,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:18,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:18,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:18,851 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:18,851 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 201 places, 186 transitions, 3003 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:18,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:18,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:18,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:19,216 INFO L124 PetriNetUnfolderBase]: 1535/2607 cut-off events. [2024-01-27 15:30:19,216 INFO L125 PetriNetUnfolderBase]: For 25152/25152 co-relation queries the response was YES. [2024-01-27 15:30:19,229 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15903 conditions, 2607 events. 1535/2607 cut-off events. For 25152/25152 co-relation queries the response was YES. Maximal size of possible extension queue 137. Compared 13969 event pairs, 711 based on Foata normal form. 12/2619 useless extension candidates. Maximal degree in co-relation 15833. Up to 2136 conditions per place. [2024-01-27 15:30:19,235 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 153 selfloop transitions, 61 changer transitions 0/215 dead transitions. [2024-01-27 15:30:19,236 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 205 places, 215 transitions, 3750 flow [2024-01-27 15:30:19,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:19,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:19,236 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-01-27 15:30:19,236 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-01-27 15:30:19,236 INFO L175 Difference]: Start difference. First operand has 201 places, 186 transitions, 3003 flow. Second operand 9 states and 99 transitions. [2024-01-27 15:30:19,236 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 205 places, 215 transitions, 3750 flow [2024-01-27 15:30:19,297 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 215 transitions, 3522 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:19,300 INFO L231 Difference]: Finished difference. Result has 198 places, 193 transitions, 3105 flow [2024-01-27 15:30:19,300 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2795, PETRI_DIFFERENCE_MINUEND_PLACES=187, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=54, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3105, PETRI_PLACES=198, PETRI_TRANSITIONS=193} [2024-01-27 15:30:19,300 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-01-27 15:30:19,301 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 193 transitions, 3105 flow [2024-01-27 15:30:19,301 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:19,301 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:19,301 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:19,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51 [2024-01-27 15:30:19,301 INFO L420 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:19,301 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:19,301 INFO L85 PathProgramCache]: Analyzing trace with hash -979148940, now seen corresponding path program 7 times [2024-01-27 15:30:19,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:19,301 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2045432911] [2024-01-27 15:30:19,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:19,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:19,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:19,469 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:19,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:19,470 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2045432911] [2024-01-27 15:30:19,470 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2045432911] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:19,470 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:19,470 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:19,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1351400511] [2024-01-27 15:30:19,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:19,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:19,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:19,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:19,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:19,471 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:19,471 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 193 transitions, 3105 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:19,471 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:19,471 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:19,471 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:19,872 INFO L124 PetriNetUnfolderBase]: 1523/2595 cut-off events. [2024-01-27 15:30:19,872 INFO L125 PetriNetUnfolderBase]: For 22653/22653 co-relation queries the response was YES. [2024-01-27 15:30:19,886 INFO L83 FinitePrefix]: Finished finitePrefix Result has 15567 conditions, 2595 events. 1523/2595 cut-off events. For 22653/22653 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 13933 event pairs, 721 based on Foata normal form. 12/2607 useless extension candidates. Maximal degree in co-relation 15495. Up to 2136 conditions per place. [2024-01-27 15:30:19,894 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 154 selfloop transitions, 61 changer transitions 0/216 dead transitions. [2024-01-27 15:30:19,894 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 216 transitions, 3691 flow [2024-01-27 15:30:19,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:19,894 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:19,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-01-27 15:30:19,895 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31746031746031744 [2024-01-27 15:30:19,895 INFO L175 Difference]: Start difference. First operand has 198 places, 193 transitions, 3105 flow. Second operand 9 states and 100 transitions. [2024-01-27 15:30:19,895 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 216 transitions, 3691 flow [2024-01-27 15:30:19,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 201 places, 216 transitions, 3596 flow, removed 8 selfloop flow, removed 5 redundant places. [2024-01-27 15:30:19,967 INFO L231 Difference]: Finished difference. Result has 203 places, 194 transitions, 3168 flow [2024-01-27 15:30:19,967 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3012, PETRI_DIFFERENCE_MINUEND_PLACES=193, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=193, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3168, PETRI_PLACES=203, PETRI_TRANSITIONS=194} [2024-01-27 15:30:19,968 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 172 predicate places. [2024-01-27 15:30:19,968 INFO L495 AbstractCegarLoop]: Abstraction has has 203 places, 194 transitions, 3168 flow [2024-01-27 15:30:19,968 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:19,968 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:19,968 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:19,968 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable52 [2024-01-27 15:30:19,968 INFO L420 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:19,969 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:19,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1272667960, now seen corresponding path program 5 times [2024-01-27 15:30:19,969 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:19,969 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1024996657] [2024-01-27 15:30:19,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:19,969 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:20,135 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:20,135 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1024996657] [2024-01-27 15:30:20,135 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1024996657] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:20,135 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [792487702] [2024-01-27 15:30:20,135 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:30:20,135 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:20,135 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:20,136 INFO L229 MonitoredProcess]: Starting monitored process 39 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:20,137 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Waiting until timeout for monitored process [2024-01-27 15:30:20,254 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:30:20,254 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:20,255 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:30:20,256 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:20,305 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-01-27 15:30:20,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2024-01-27 15:30:20,314 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:20,314 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:20,367 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:30:20,367 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-01-27 15:30:20,388 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:20,388 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [792487702] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:20,388 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:20,388 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 7] total 16 [2024-01-27 15:30:20,388 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1514306514] [2024-01-27 15:30:20,388 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:20,388 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-01-27 15:30:20,389 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:20,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-01-27 15:30:20,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=189, Unknown=0, NotChecked=0, Total=240 [2024-01-27 15:30:20,389 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:20,389 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 203 places, 194 transitions, 3168 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) [2024-01-27 15:30:20,389 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:20,389 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:20,389 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:20,946 INFO L124 PetriNetUnfolderBase]: 1721/2913 cut-off events. [2024-01-27 15:30:20,946 INFO L125 PetriNetUnfolderBase]: For 28558/28558 co-relation queries the response was YES. [2024-01-27 15:30:20,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18049 conditions, 2913 events. 1721/2913 cut-off events. For 28558/28558 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 16000 event pairs, 723 based on Foata normal form. 30/2943 useless extension candidates. Maximal degree in co-relation 17975. Up to 2216 conditions per place. [2024-01-27 15:30:20,969 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 178 selfloop transitions, 66 changer transitions 0/245 dead transitions. [2024-01-27 15:30:20,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 212 places, 245 transitions, 4167 flow [2024-01-27 15:30:20,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:20,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:20,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 114 transitions. [2024-01-27 15:30:20,971 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32571428571428573 [2024-01-27 15:30:20,971 INFO L175 Difference]: Start difference. First operand has 203 places, 194 transitions, 3168 flow. Second operand 10 states and 114 transitions. [2024-01-27 15:30:20,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 212 places, 245 transitions, 4167 flow [2024-01-27 15:30:21,052 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 207 places, 245 transitions, 4096 flow, removed 2 selfloop flow, removed 5 redundant places. [2024-01-27 15:30:21,055 INFO L231 Difference]: Finished difference. Result has 209 places, 200 transitions, 3364 flow [2024-01-27 15:30:21,055 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3097, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=130, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3364, PETRI_PLACES=209, PETRI_TRANSITIONS=200} [2024-01-27 15:30:21,055 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-01-27 15:30:21,056 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 200 transitions, 3364 flow [2024-01-27 15:30:21,056 INFO L496 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) [2024-01-27 15:30:21,056 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:21,056 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:21,067 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (39)] Ended with exit code 0 [2024-01-27 15:30:21,265 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 39 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable53 [2024-01-27 15:30:21,266 INFO L420 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:21,266 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:21,266 INFO L85 PathProgramCache]: Analyzing trace with hash -2065240116, now seen corresponding path program 8 times [2024-01-27 15:30:21,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:21,266 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [678558862] [2024-01-27 15:30:21,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:21,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:21,422 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:21,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:21,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [678558862] [2024-01-27 15:30:21,423 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [678558862] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:21,423 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:21,423 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:21,423 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943659080] [2024-01-27 15:30:21,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:21,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:21,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:21,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:21,424 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:21,424 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:21,425 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 200 transitions, 3364 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:21,425 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:21,425 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:21,425 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:21,877 INFO L124 PetriNetUnfolderBase]: 1713/2905 cut-off events. [2024-01-27 15:30:21,877 INFO L125 PetriNetUnfolderBase]: For 31183/31183 co-relation queries the response was YES. [2024-01-27 15:30:21,893 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18413 conditions, 2905 events. 1713/2905 cut-off events. For 31183/31183 co-relation queries the response was YES. Maximal size of possible extension queue 155. Compared 15965 event pairs, 799 based on Foata normal form. 8/2913 useless extension candidates. Maximal degree in co-relation 18338. Up to 2418 conditions per place. [2024-01-27 15:30:21,901 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 155 selfloop transitions, 56 changer transitions 10/222 dead transitions. [2024-01-27 15:30:21,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 222 transitions, 3867 flow [2024-01-27 15:30:21,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:21,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:21,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 109 transitions. [2024-01-27 15:30:21,902 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2831168831168831 [2024-01-27 15:30:21,902 INFO L175 Difference]: Start difference. First operand has 209 places, 200 transitions, 3364 flow. Second operand 11 states and 109 transitions. [2024-01-27 15:30:21,902 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 222 transitions, 3867 flow [2024-01-27 15:30:21,996 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 222 transitions, 3746 flow, removed 20 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:21,999 INFO L231 Difference]: Finished difference. Result has 213 places, 194 transitions, 3250 flow [2024-01-27 15:30:21,999 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3202, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=198, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=142, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3250, PETRI_PLACES=213, PETRI_TRANSITIONS=194} [2024-01-27 15:30:21,999 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 182 predicate places. [2024-01-27 15:30:21,999 INFO L495 AbstractCegarLoop]: Abstraction has has 213 places, 194 transitions, 3250 flow [2024-01-27 15:30:21,999 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:21,999 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:22,000 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:22,000 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54 [2024-01-27 15:30:22,000 INFO L420 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:22,000 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:22,000 INFO L85 PathProgramCache]: Analyzing trace with hash 1757961682, now seen corresponding path program 6 times [2024-01-27 15:30:22,000 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:22,000 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801238247] [2024-01-27 15:30:22,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:22,000 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:22,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:22,174 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:22,174 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:22,174 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801238247] [2024-01-27 15:30:22,175 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801238247] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:22,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [994164054] [2024-01-27 15:30:22,175 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-01-27 15:30:22,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:22,175 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:22,176 INFO L229 MonitoredProcess]: Starting monitored process 40 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:22,176 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Waiting until timeout for monitored process [2024-01-27 15:30:22,297 INFO L228 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-01-27 15:30:22,297 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:22,299 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 25 conjunts are in the unsatisfiable core [2024-01-27 15:30:22,300 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:22,345 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:30:22,346 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 21 [2024-01-27 15:30:22,362 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:22,363 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:22,423 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:30:22,423 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-01-27 15:30:22,444 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:22,445 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [994164054] provided 1 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:22,445 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-01-27 15:30:22,445 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [9, 9] total 17 [2024-01-27 15:30:22,445 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1460486433] [2024-01-27 15:30:22,445 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:22,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-01-27 15:30:22,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:22,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-01-27 15:30:22,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2024-01-27 15:30:22,446 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:22,446 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 194 transitions, 3250 flow. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:22,446 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:22,446 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:22,446 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:22,944 INFO L124 PetriNetUnfolderBase]: 1846/3157 cut-off events. [2024-01-27 15:30:22,944 INFO L125 PetriNetUnfolderBase]: For 32884/32884 co-relation queries the response was YES. [2024-01-27 15:30:22,961 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19577 conditions, 3157 events. 1846/3157 cut-off events. For 32884/32884 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 17888 event pairs, 803 based on Foata normal form. 30/3187 useless extension candidates. Maximal degree in co-relation 19501. Up to 2451 conditions per place. [2024-01-27 15:30:22,971 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 177 selfloop transitions, 60 changer transitions 0/238 dead transitions. [2024-01-27 15:30:22,971 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 218 places, 238 transitions, 4093 flow [2024-01-27 15:30:22,972 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:22,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:22,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 111 transitions. [2024-01-27 15:30:22,972 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3523809523809524 [2024-01-27 15:30:22,972 INFO L175 Difference]: Start difference. First operand has 213 places, 194 transitions, 3250 flow. Second operand 9 states and 111 transitions. [2024-01-27 15:30:22,972 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 218 places, 238 transitions, 4093 flow [2024-01-27 15:30:23,073 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 238 transitions, 3947 flow, removed 5 selfloop flow, removed 13 redundant places. [2024-01-27 15:30:23,076 INFO L231 Difference]: Finished difference. Result has 206 places, 199 transitions, 3368 flow [2024-01-27 15:30:23,076 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3116, PETRI_DIFFERENCE_MINUEND_PLACES=197, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=194, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=55, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=137, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3368, PETRI_PLACES=206, PETRI_TRANSITIONS=199} [2024-01-27 15:30:23,077 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-01-27 15:30:23,077 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 199 transitions, 3368 flow [2024-01-27 15:30:23,077 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:23,077 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:23,077 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:23,090 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (40)] Forceful destruction successful, exit code 0 [2024-01-27 15:30:23,277 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 40 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable55 [2024-01-27 15:30:23,278 INFO L420 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:23,278 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:23,278 INFO L85 PathProgramCache]: Analyzing trace with hash -839760670, now seen corresponding path program 7 times [2024-01-27 15:30:23,278 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:23,278 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1301019579] [2024-01-27 15:30:23,278 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:23,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:23,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:23,447 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:23,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1301019579] [2024-01-27 15:30:23,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1301019579] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:23,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [279312571] [2024-01-27 15:30:23,447 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-01-27 15:30:23,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:23,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:23,448 INFO L229 MonitoredProcess]: Starting monitored process 41 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:23,449 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Waiting until timeout for monitored process [2024-01-27 15:30:23,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:23,566 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 15 conjunts are in the unsatisfiable core [2024-01-27 15:30:23,567 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:23,599 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-01-27 15:30:23,599 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 29 treesize of output 25 [2024-01-27 15:30:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:23,617 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:23,671 INFO L349 Elim1Store]: treesize reduction 28, result has 63.6 percent of original size [2024-01-27 15:30:23,672 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 40 treesize of output 56 [2024-01-27 15:30:23,686 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:23,686 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [279312571] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:23,686 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:23,686 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7, 7] total 18 [2024-01-27 15:30:23,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259219322] [2024-01-27 15:30:23,686 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:23,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-01-27 15:30:23,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:23,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-01-27 15:30:23,687 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-01-27 15:30:23,688 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:23,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 199 transitions, 3368 flow. Second operand has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:23,688 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:23,688 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:23,688 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:24,333 INFO L124 PetriNetUnfolderBase]: 1870/3250 cut-off events. [2024-01-27 15:30:24,333 INFO L125 PetriNetUnfolderBase]: For 31534/31534 co-relation queries the response was YES. [2024-01-27 15:30:24,352 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19454 conditions, 3250 events. 1870/3250 cut-off events. For 31534/31534 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 18987 event pairs, 833 based on Foata normal form. 30/3279 useless extension candidates. Maximal degree in co-relation 19380. Up to 2478 conditions per place. [2024-01-27 15:30:24,361 INFO L140 encePairwiseOnDemand]: 22/35 looper letters, 203 selfloop transitions, 78 changer transitions 0/282 dead transitions. [2024-01-27 15:30:24,362 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 282 transitions, 4555 flow [2024-01-27 15:30:24,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2024-01-27 15:30:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2024-01-27 15:30:24,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 171 transitions. [2024-01-27 15:30:24,362 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3053571428571429 [2024-01-27 15:30:24,363 INFO L175 Difference]: Start difference. First operand has 206 places, 199 transitions, 3368 flow. Second operand 16 states and 171 transitions. [2024-01-27 15:30:24,363 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 282 transitions, 4555 flow [2024-01-27 15:30:24,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 282 transitions, 4430 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-01-27 15:30:24,461 INFO L231 Difference]: Finished difference. Result has 221 places, 214 transitions, 3680 flow [2024-01-27 15:30:24,461 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3265, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=199, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=65, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=128, PETRI_DIFFERENCE_SUBTRAHEND_STATES=16, PETRI_FLOW=3680, PETRI_PLACES=221, PETRI_TRANSITIONS=214} [2024-01-27 15:30:24,462 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-01-27 15:30:24,462 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 214 transitions, 3680 flow [2024-01-27 15:30:24,462 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 5.888888888888889) internal successors, (106), 18 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:24,462 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:24,462 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:24,473 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (41)] Ended with exit code 0 [2024-01-27 15:30:24,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 41 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable56 [2024-01-27 15:30:24,662 INFO L420 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:24,663 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:24,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1190985456, now seen corresponding path program 9 times [2024-01-27 15:30:24,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:24,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1028146525] [2024-01-27 15:30:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:24,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:24,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:24,841 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:24,841 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1028146525] [2024-01-27 15:30:24,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1028146525] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:24,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:24,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:24,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [980614604] [2024-01-27 15:30:24,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:24,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:24,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:24,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:24,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:24,842 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:24,842 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 214 transitions, 3680 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:24,842 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:24,842 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:24,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:25,358 INFO L124 PetriNetUnfolderBase]: 1871/3259 cut-off events. [2024-01-27 15:30:25,358 INFO L125 PetriNetUnfolderBase]: For 30993/30993 co-relation queries the response was YES. [2024-01-27 15:30:25,377 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19761 conditions, 3259 events. 1871/3259 cut-off events. For 30993/30993 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 19162 event pairs, 911 based on Foata normal form. 8/3267 useless extension candidates. Maximal degree in co-relation 19683. Up to 2786 conditions per place. [2024-01-27 15:30:25,386 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 167 selfloop transitions, 59 changer transitions 7/234 dead transitions. [2024-01-27 15:30:25,386 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 234 transitions, 4240 flow [2024-01-27 15:30:25,387 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:25,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:25,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 102 transitions. [2024-01-27 15:30:25,387 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2914285714285714 [2024-01-27 15:30:25,387 INFO L175 Difference]: Start difference. First operand has 221 places, 214 transitions, 3680 flow. Second operand 10 states and 102 transitions. [2024-01-27 15:30:25,387 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 234 transitions, 4240 flow [2024-01-27 15:30:25,489 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 223 places, 234 transitions, 4152 flow, removed 4 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:25,492 INFO L231 Difference]: Finished difference. Result has 224 places, 213 transitions, 3687 flow [2024-01-27 15:30:25,493 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3593, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=214, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=155, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3687, PETRI_PLACES=224, PETRI_TRANSITIONS=213} [2024-01-27 15:30:25,493 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-01-27 15:30:25,493 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 213 transitions, 3687 flow [2024-01-27 15:30:25,493 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:25,493 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:25,493 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:25,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-01-27 15:30:25,493 INFO L420 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:25,493 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:25,493 INFO L85 PathProgramCache]: Analyzing trace with hash -1144517950, now seen corresponding path program 8 times [2024-01-27 15:30:25,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:25,494 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [700008419] [2024-01-27 15:30:25,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:25,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:25,652 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:25,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:25,652 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [700008419] [2024-01-27 15:30:25,652 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [700008419] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:25,652 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:25,652 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:25,652 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1568426587] [2024-01-27 15:30:25,652 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:25,652 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:25,652 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:25,653 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:25,653 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:25,653 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:25,653 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 213 transitions, 3687 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:25,653 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:25,653 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:25,653 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:26,149 INFO L124 PetriNetUnfolderBase]: 1858/3238 cut-off events. [2024-01-27 15:30:26,149 INFO L125 PetriNetUnfolderBase]: For 30779/30779 co-relation queries the response was YES. [2024-01-27 15:30:26,169 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19664 conditions, 3238 events. 1858/3238 cut-off events. For 30779/30779 co-relation queries the response was YES. Maximal size of possible extension queue 165. Compared 19053 event pairs, 893 based on Foata normal form. 10/3248 useless extension candidates. Maximal degree in co-relation 19585. Up to 2776 conditions per place. [2024-01-27 15:30:26,179 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 167 selfloop transitions, 53 changer transitions 8/229 dead transitions. [2024-01-27 15:30:26,179 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 229 transitions, 4126 flow [2024-01-27 15:30:26,179 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:26,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:26,180 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 102 transitions. [2024-01-27 15:30:26,180 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2649350649350649 [2024-01-27 15:30:26,180 INFO L175 Difference]: Start difference. First operand has 224 places, 213 transitions, 3687 flow. Second operand 11 states and 102 transitions. [2024-01-27 15:30:26,180 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 229 transitions, 4126 flow [2024-01-27 15:30:26,284 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 224 places, 229 transitions, 4012 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-27 15:30:26,288 INFO L231 Difference]: Finished difference. Result has 224 places, 205 transitions, 3489 flow [2024-01-27 15:30:26,288 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3480, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=210, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=53, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=157, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3489, PETRI_PLACES=224, PETRI_TRANSITIONS=205} [2024-01-27 15:30:26,288 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 193 predicate places. [2024-01-27 15:30:26,288 INFO L495 AbstractCegarLoop]: Abstraction has has 224 places, 205 transitions, 3489 flow [2024-01-27 15:30:26,288 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:26,288 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:26,288 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:26,288 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable58 [2024-01-27 15:30:26,289 INFO L420 AbstractCegarLoop]: === Iteration 60 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:26,289 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:26,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1464135894, now seen corresponding path program 10 times [2024-01-27 15:30:26,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:26,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [759955995] [2024-01-27 15:30:26,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:26,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:26,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:26,463 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:26,463 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:26,463 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [759955995] [2024-01-27 15:30:26,463 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [759955995] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:26,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:26,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:26,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506825417] [2024-01-27 15:30:26,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:26,464 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:26,464 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:26,464 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:26,464 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:26,464 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:26,465 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 224 places, 205 transitions, 3489 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:26,465 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:26,465 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:26,465 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:26,946 INFO L124 PetriNetUnfolderBase]: 1820/3172 cut-off events. [2024-01-27 15:30:26,946 INFO L125 PetriNetUnfolderBase]: For 29463/29463 co-relation queries the response was YES. [2024-01-27 15:30:26,965 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19131 conditions, 3172 events. 1820/3172 cut-off events. For 29463/29463 co-relation queries the response was YES. Maximal size of possible extension queue 160. Compared 18517 event pairs, 915 based on Foata normal form. 8/3180 useless extension candidates. Maximal degree in co-relation 19053. Up to 2750 conditions per place. [2024-01-27 15:30:26,973 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 162 selfloop transitions, 51 changer transitions 7/221 dead transitions. [2024-01-27 15:30:26,974 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 221 transitions, 3940 flow [2024-01-27 15:30:26,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:26,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:26,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-01-27 15:30:26,974 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27714285714285714 [2024-01-27 15:30:26,974 INFO L175 Difference]: Start difference. First operand has 224 places, 205 transitions, 3489 flow. Second operand 10 states and 97 transitions. [2024-01-27 15:30:26,974 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 221 transitions, 3940 flow [2024-01-27 15:30:27,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 211 places, 221 transitions, 3733 flow, removed 5 selfloop flow, removed 17 redundant places. [2024-01-27 15:30:27,066 INFO L231 Difference]: Finished difference. Result has 211 places, 200 transitions, 3272 flow [2024-01-27 15:30:27,066 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3216, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=202, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=51, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=151, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3272, PETRI_PLACES=211, PETRI_TRANSITIONS=200} [2024-01-27 15:30:27,066 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-01-27 15:30:27,066 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 200 transitions, 3272 flow [2024-01-27 15:30:27,067 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:27,067 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:27,067 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:27,067 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable59 [2024-01-27 15:30:27,067 INFO L420 AbstractCegarLoop]: === Iteration 61 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:27,067 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:27,067 INFO L85 PathProgramCache]: Analyzing trace with hash -1077596618, now seen corresponding path program 9 times [2024-01-27 15:30:27,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:27,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1979555533] [2024-01-27 15:30:27,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:27,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:27,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:27,229 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:27,229 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:27,229 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1979555533] [2024-01-27 15:30:27,229 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1979555533] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:27,229 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:27,229 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:27,229 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [139220332] [2024-01-27 15:30:27,230 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:27,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:27,230 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:27,230 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:27,230 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:27,230 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:27,230 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 200 transitions, 3272 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:27,230 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:27,230 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:27,230 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:27,662 INFO L124 PetriNetUnfolderBase]: 1715/2960 cut-off events. [2024-01-27 15:30:27,662 INFO L125 PetriNetUnfolderBase]: For 25435/25435 co-relation queries the response was YES. [2024-01-27 15:30:27,679 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17934 conditions, 2960 events. 1715/2960 cut-off events. For 25435/25435 co-relation queries the response was YES. Maximal size of possible extension queue 149. Compared 16744 event pairs, 819 based on Foata normal form. 6/2966 useless extension candidates. Maximal degree in co-relation 17860. Up to 2552 conditions per place. [2024-01-27 15:30:27,689 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 159 selfloop transitions, 47 changer transitions 5/212 dead transitions. [2024-01-27 15:30:27,689 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 212 transitions, 3653 flow [2024-01-27 15:30:27,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:27,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:27,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 94 transitions. [2024-01-27 15:30:27,689 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26857142857142857 [2024-01-27 15:30:27,689 INFO L175 Difference]: Start difference. First operand has 211 places, 200 transitions, 3272 flow. Second operand 10 states and 94 transitions. [2024-01-27 15:30:27,689 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 212 transitions, 3653 flow [2024-01-27 15:30:27,775 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 205 places, 212 transitions, 3526 flow, removed 6 selfloop flow, removed 11 redundant places. [2024-01-27 15:30:27,778 INFO L231 Difference]: Finished difference. Result has 205 places, 193 transitions, 3085 flow [2024-01-27 15:30:27,778 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3034, PETRI_DIFFERENCE_MINUEND_PLACES=196, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=47, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3085, PETRI_PLACES=205, PETRI_TRANSITIONS=193} [2024-01-27 15:30:27,778 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 174 predicate places. [2024-01-27 15:30:27,778 INFO L495 AbstractCegarLoop]: Abstraction has has 205 places, 193 transitions, 3085 flow [2024-01-27 15:30:27,778 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:27,779 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:27,779 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:27,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable60 [2024-01-27 15:30:27,779 INFO L420 AbstractCegarLoop]: === Iteration 62 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:27,779 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:27,779 INFO L85 PathProgramCache]: Analyzing trace with hash 2058949172, now seen corresponding path program 10 times [2024-01-27 15:30:27,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:27,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [736916720] [2024-01-27 15:30:27,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:27,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:27,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:27,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:27,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:27,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [736916720] [2024-01-27 15:30:27,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [736916720] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:27,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:27,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:27,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135265749] [2024-01-27 15:30:27,955 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:27,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:27,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:27,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:27,956 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:27,956 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 193 transitions, 3085 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:27,956 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:27,956 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:27,956 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:28,358 INFO L124 PetriNetUnfolderBase]: 1610/2750 cut-off events. [2024-01-27 15:30:28,359 INFO L125 PetriNetUnfolderBase]: For 23061/23061 co-relation queries the response was YES. [2024-01-27 15:30:28,374 INFO L83 FinitePrefix]: Finished finitePrefix Result has 16711 conditions, 2750 events. 1610/2750 cut-off events. For 23061/23061 co-relation queries the response was YES. Maximal size of possible extension queue 140. Compared 15075 event pairs, 755 based on Foata normal form. 6/2756 useless extension candidates. Maximal degree in co-relation 16639. Up to 2354 conditions per place. [2024-01-27 15:30:28,383 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 157 selfloop transitions, 42 changer transitions 5/205 dead transitions. [2024-01-27 15:30:28,383 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 210 places, 205 transitions, 3454 flow [2024-01-27 15:30:28,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:28,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 93 transitions. [2024-01-27 15:30:28,383 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26571428571428574 [2024-01-27 15:30:28,384 INFO L175 Difference]: Start difference. First operand has 205 places, 193 transitions, 3085 flow. Second operand 10 states and 93 transitions. [2024-01-27 15:30:28,384 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 210 places, 205 transitions, 3454 flow [2024-01-27 15:30:28,456 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 200 places, 205 transitions, 3349 flow, removed 1 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:28,459 INFO L231 Difference]: Finished difference. Result has 200 places, 186 transitions, 2912 flow [2024-01-27 15:30:28,459 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2871, PETRI_DIFFERENCE_MINUEND_PLACES=191, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=188, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=42, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=146, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=2912, PETRI_PLACES=200, PETRI_TRANSITIONS=186} [2024-01-27 15:30:28,460 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 169 predicate places. [2024-01-27 15:30:28,460 INFO L495 AbstractCegarLoop]: Abstraction has has 200 places, 186 transitions, 2912 flow [2024-01-27 15:30:28,460 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:28,460 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:28,460 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:28,460 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable61 [2024-01-27 15:30:28,460 INFO L420 AbstractCegarLoop]: === Iteration 63 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:28,460 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:28,461 INFO L85 PathProgramCache]: Analyzing trace with hash 957646878, now seen corresponding path program 11 times [2024-01-27 15:30:28,461 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:28,461 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507422452] [2024-01-27 15:30:28,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:28,461 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:28,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:28,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:28,624 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:28,624 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507422452] [2024-01-27 15:30:28,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507422452] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:28,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:28,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:28,625 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131950897] [2024-01-27 15:30:28,625 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:28,625 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:28,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:28,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:28,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:28,625 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:28,626 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 200 places, 186 transitions, 2912 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:28,626 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:28,626 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:28,626 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:29,085 INFO L124 PetriNetUnfolderBase]: 1714/2902 cut-off events. [2024-01-27 15:30:29,085 INFO L125 PetriNetUnfolderBase]: For 26103/26103 co-relation queries the response was YES. [2024-01-27 15:30:29,101 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18077 conditions, 2902 events. 1714/2902 cut-off events. For 26103/26103 co-relation queries the response was YES. Maximal size of possible extension queue 151. Compared 15992 event pairs, 573 based on Foata normal form. 12/2914 useless extension candidates. Maximal degree in co-relation 18005. Up to 1952 conditions per place. [2024-01-27 15:30:29,110 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 181 selfloop transitions, 81 changer transitions 0/263 dead transitions. [2024-01-27 15:30:29,110 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 204 places, 263 transitions, 4408 flow [2024-01-27 15:30:29,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-01-27 15:30:29,111 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346031746031746 [2024-01-27 15:30:29,111 INFO L175 Difference]: Start difference. First operand has 200 places, 186 transitions, 2912 flow. Second operand 9 states and 109 transitions. [2024-01-27 15:30:29,111 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 204 places, 263 transitions, 4408 flow [2024-01-27 15:30:29,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 194 places, 263 transitions, 4242 flow, removed 6 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:29,192 INFO L231 Difference]: Finished difference. Result has 198 places, 201 transitions, 3335 flow [2024-01-27 15:30:29,193 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2787, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=186, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3335, PETRI_PLACES=198, PETRI_TRANSITIONS=201} [2024-01-27 15:30:29,193 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 167 predicate places. [2024-01-27 15:30:29,193 INFO L495 AbstractCegarLoop]: Abstraction has has 198 places, 201 transitions, 3335 flow [2024-01-27 15:30:29,193 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:29,193 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:29,193 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:29,193 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable62 [2024-01-27 15:30:29,193 INFO L420 AbstractCegarLoop]: === Iteration 64 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:29,193 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:29,193 INFO L85 PathProgramCache]: Analyzing trace with hash 1590590228, now seen corresponding path program 12 times [2024-01-27 15:30:29,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:29,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1680846239] [2024-01-27 15:30:29,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:29,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:29,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:29,352 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:29,352 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:29,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1680846239] [2024-01-27 15:30:29,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1680846239] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:29,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:29,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:29,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857301170] [2024-01-27 15:30:29,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:29,353 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:29,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:29,353 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:29,353 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:29,353 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:29,353 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 198 places, 201 transitions, 3335 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:29,353 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:29,354 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:29,354 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:29,855 INFO L124 PetriNetUnfolderBase]: 1806/3042 cut-off events. [2024-01-27 15:30:29,855 INFO L125 PetriNetUnfolderBase]: For 31310/31310 co-relation queries the response was YES. [2024-01-27 15:30:29,871 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19951 conditions, 3042 events. 1806/3042 cut-off events. For 31310/31310 co-relation queries the response was YES. Maximal size of possible extension queue 167. Compared 16788 event pairs, 653 based on Foata normal form. 12/3054 useless extension candidates. Maximal degree in co-relation 19877. Up to 2092 conditions per place. [2024-01-27 15:30:29,881 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 182 selfloop transitions, 74 changer transitions 0/257 dead transitions. [2024-01-27 15:30:29,881 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 206 places, 257 transitions, 4539 flow [2024-01-27 15:30:29,881 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:29,881 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:29,882 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 107 transitions. [2024-01-27 15:30:29,882 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3396825396825397 [2024-01-27 15:30:29,882 INFO L175 Difference]: Start difference. First operand has 198 places, 201 transitions, 3335 flow. Second operand 9 states and 107 transitions. [2024-01-27 15:30:29,882 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 206 places, 257 transitions, 4539 flow [2024-01-27 15:30:29,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 257 transitions, 4489 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-01-27 15:30:29,975 INFO L231 Difference]: Finished difference. Result has 206 places, 211 transitions, 3719 flow [2024-01-27 15:30:29,975 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3294, PETRI_DIFFERENCE_MINUEND_PLACES=195, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=66, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3719, PETRI_PLACES=206, PETRI_TRANSITIONS=211} [2024-01-27 15:30:29,975 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 175 predicate places. [2024-01-27 15:30:29,975 INFO L495 AbstractCegarLoop]: Abstraction has has 206 places, 211 transitions, 3719 flow [2024-01-27 15:30:29,975 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:29,976 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:29,976 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:29,976 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable63 [2024-01-27 15:30:29,976 INFO L420 AbstractCegarLoop]: === Iteration 65 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:29,976 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash 1783802350, now seen corresponding path program 13 times [2024-01-27 15:30:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433896421] [2024-01-27 15:30:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:29,977 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:29,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:30,131 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:30,132 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:30,132 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433896421] [2024-01-27 15:30:30,132 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433896421] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:30,132 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:30,132 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:30,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611344466] [2024-01-27 15:30:30,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:30,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:30,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:30,133 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:30,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:30,133 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:30,134 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 211 transitions, 3719 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:30,134 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:30,134 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:30,134 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:30,684 INFO L124 PetriNetUnfolderBase]: 1774/2998 cut-off events. [2024-01-27 15:30:30,684 INFO L125 PetriNetUnfolderBase]: For 31131/31131 co-relation queries the response was YES. [2024-01-27 15:30:30,700 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19954 conditions, 2998 events. 1774/2998 cut-off events. For 31131/31131 co-relation queries the response was YES. Maximal size of possible extension queue 164. Compared 16667 event pairs, 207 based on Foata normal form. 12/3010 useless extension candidates. Maximal degree in co-relation 19878. Up to 1604 conditions per place. [2024-01-27 15:30:30,711 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 202 selfloop transitions, 79 changer transitions 2/284 dead transitions. [2024-01-27 15:30:30,711 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 284 transitions, 4942 flow [2024-01-27 15:30:30,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:30,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:30,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 117 transitions. [2024-01-27 15:30:30,712 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3342857142857143 [2024-01-27 15:30:30,712 INFO L175 Difference]: Start difference. First operand has 206 places, 211 transitions, 3719 flow. Second operand 10 states and 117 transitions. [2024-01-27 15:30:30,712 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 284 transitions, 4942 flow [2024-01-27 15:30:30,817 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 284 transitions, 4840 flow, removed 24 selfloop flow, removed 3 redundant places. [2024-01-27 15:30:30,820 INFO L231 Difference]: Finished difference. Result has 214 places, 212 transitions, 3812 flow [2024-01-27 15:30:30,821 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3617, PETRI_DIFFERENCE_MINUEND_PLACES=203, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=211, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3812, PETRI_PLACES=214, PETRI_TRANSITIONS=212} [2024-01-27 15:30:30,821 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 183 predicate places. [2024-01-27 15:30:30,821 INFO L495 AbstractCegarLoop]: Abstraction has has 214 places, 212 transitions, 3812 flow [2024-01-27 15:30:30,821 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:30,821 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:30,821 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:30,822 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable64 [2024-01-27 15:30:30,822 INFO L420 AbstractCegarLoop]: === Iteration 66 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:30,822 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:30,822 INFO L85 PathProgramCache]: Analyzing trace with hash -489092318, now seen corresponding path program 11 times [2024-01-27 15:30:30,822 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:30,822 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1378732897] [2024-01-27 15:30:30,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:30,823 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:30,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:30,996 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:30,996 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:30,996 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1378732897] [2024-01-27 15:30:30,996 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1378732897] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:30,997 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:30,997 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:30,997 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1819966401] [2024-01-27 15:30:30,997 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:30,997 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:30,997 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:30,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:30,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:30,997 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:30,997 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 214 places, 212 transitions, 3812 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:30,997 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:30,998 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:30,998 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:31,511 INFO L124 PetriNetUnfolderBase]: 1802/3040 cut-off events. [2024-01-27 15:30:31,512 INFO L125 PetriNetUnfolderBase]: For 36063/36063 co-relation queries the response was YES. [2024-01-27 15:30:31,532 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20892 conditions, 3040 events. 1802/3040 cut-off events. For 36063/36063 co-relation queries the response was YES. Maximal size of possible extension queue 168. Compared 16821 event pairs, 653 based on Foata normal form. 30/3070 useless extension candidates. Maximal degree in co-relation 20814. Up to 2158 conditions per place. [2024-01-27 15:30:31,543 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 185 selfloop transitions, 73 changer transitions 0/259 dead transitions. [2024-01-27 15:30:31,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 259 transitions, 4798 flow [2024-01-27 15:30:31,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:31,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:31,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 109 transitions. [2024-01-27 15:30:31,543 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.346031746031746 [2024-01-27 15:30:31,544 INFO L175 Difference]: Start difference. First operand has 214 places, 212 transitions, 3812 flow. Second operand 9 states and 109 transitions. [2024-01-27 15:30:31,544 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 259 transitions, 4798 flow [2024-01-27 15:30:31,657 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 259 transitions, 4533 flow, removed 23 selfloop flow, removed 13 redundant places. [2024-01-27 15:30:31,660 INFO L231 Difference]: Finished difference. Result has 211 places, 217 transitions, 3844 flow [2024-01-27 15:30:31,661 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3573, PETRI_DIFFERENCE_MINUEND_PLACES=201, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=212, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=68, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=143, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3844, PETRI_PLACES=211, PETRI_TRANSITIONS=217} [2024-01-27 15:30:31,661 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-01-27 15:30:31,661 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 217 transitions, 3844 flow [2024-01-27 15:30:31,661 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:31,661 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:31,661 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:31,662 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable65 [2024-01-27 15:30:31,662 INFO L420 AbstractCegarLoop]: === Iteration 67 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:31,662 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:31,662 INFO L85 PathProgramCache]: Analyzing trace with hash -1049767982, now seen corresponding path program 14 times [2024-01-27 15:30:31,662 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:31,662 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1089839510] [2024-01-27 15:30:31,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:31,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:31,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:31,840 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:31,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:31,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1089839510] [2024-01-27 15:30:31,840 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1089839510] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:31,840 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:31,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:31,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [464324768] [2024-01-27 15:30:31,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:31,841 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:31,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:31,841 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:31,841 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:31,841 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:31,841 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 217 transitions, 3844 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:31,841 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:31,841 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:31,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:32,308 INFO L124 PetriNetUnfolderBase]: 1790/3028 cut-off events. [2024-01-27 15:30:32,308 INFO L125 PetriNetUnfolderBase]: For 31517/31517 co-relation queries the response was YES. [2024-01-27 15:30:32,324 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20441 conditions, 3028 events. 1790/3028 cut-off events. For 31517/31517 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 16884 event pairs, 605 based on Foata normal form. 12/3040 useless extension candidates. Maximal degree in co-relation 20367. Up to 2124 conditions per place. [2024-01-27 15:30:32,332 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 176 selfloop transitions, 84 changer transitions 0/261 dead transitions. [2024-01-27 15:30:32,332 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 261 transitions, 4748 flow [2024-01-27 15:30:32,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:32,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:32,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-01-27 15:30:32,333 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2024-01-27 15:30:32,333 INFO L175 Difference]: Start difference. First operand has 211 places, 217 transitions, 3844 flow. Second operand 9 states and 101 transitions. [2024-01-27 15:30:32,333 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 261 transitions, 4748 flow [2024-01-27 15:30:32,420 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 214 places, 261 transitions, 4603 flow, removed 24 selfloop flow, removed 5 redundant places. [2024-01-27 15:30:32,423 INFO L231 Difference]: Finished difference. Result has 217 places, 219 transitions, 3930 flow [2024-01-27 15:30:32,423 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3707, PETRI_DIFFERENCE_MINUEND_PLACES=206, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3930, PETRI_PLACES=217, PETRI_TRANSITIONS=219} [2024-01-27 15:30:32,424 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 186 predicate places. [2024-01-27 15:30:32,424 INFO L495 AbstractCegarLoop]: Abstraction has has 217 places, 219 transitions, 3930 flow [2024-01-27 15:30:32,424 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:32,424 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:32,424 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:32,424 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable66 [2024-01-27 15:30:32,424 INFO L420 AbstractCegarLoop]: === Iteration 68 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:32,424 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:32,424 INFO L85 PathProgramCache]: Analyzing trace with hash -1517793486, now seen corresponding path program 15 times [2024-01-27 15:30:32,425 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:32,425 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1416236090] [2024-01-27 15:30:32,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:32,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:32,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:32,588 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:32,589 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:32,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1416236090] [2024-01-27 15:30:32,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1416236090] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:32,589 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:32,589 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:32,589 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596650312] [2024-01-27 15:30:32,589 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:32,589 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:32,589 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:32,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:32,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:32,590 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:32,590 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 217 places, 219 transitions, 3930 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:32,590 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:32,590 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:32,590 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:33,066 INFO L124 PetriNetUnfolderBase]: 1817/3069 cut-off events. [2024-01-27 15:30:33,067 INFO L125 PetriNetUnfolderBase]: For 33957/33957 co-relation queries the response was YES. [2024-01-27 15:30:33,083 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20758 conditions, 3069 events. 1817/3069 cut-off events. For 33957/33957 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17040 event pairs, 661 based on Foata normal form. 12/3081 useless extension candidates. Maximal degree in co-relation 20681. Up to 2158 conditions per place. [2024-01-27 15:30:33,092 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 172 selfloop transitions, 81 changer transitions 0/254 dead transitions. [2024-01-27 15:30:33,092 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 225 places, 254 transitions, 4808 flow [2024-01-27 15:30:33,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:33,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:33,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 99 transitions. [2024-01-27 15:30:33,093 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3142857142857143 [2024-01-27 15:30:33,093 INFO L175 Difference]: Start difference. First operand has 217 places, 219 transitions, 3930 flow. Second operand 9 states and 99 transitions. [2024-01-27 15:30:33,093 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 225 places, 254 transitions, 4808 flow [2024-01-27 15:30:33,184 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 254 transitions, 4641 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:30:33,188 INFO L231 Difference]: Finished difference. Result has 222 places, 226 transitions, 4130 flow [2024-01-27 15:30:33,188 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3769, PETRI_DIFFERENCE_MINUEND_PLACES=211, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=219, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4130, PETRI_PLACES=222, PETRI_TRANSITIONS=226} [2024-01-27 15:30:33,188 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 191 predicate places. [2024-01-27 15:30:33,188 INFO L495 AbstractCegarLoop]: Abstraction has has 222 places, 226 transitions, 4130 flow [2024-01-27 15:30:33,189 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:33,189 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:33,189 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:33,189 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable67 [2024-01-27 15:30:33,189 INFO L420 AbstractCegarLoop]: === Iteration 69 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:33,189 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:33,189 INFO L85 PathProgramCache]: Analyzing trace with hash 1079928866, now seen corresponding path program 16 times [2024-01-27 15:30:33,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:33,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [664874638] [2024-01-27 15:30:33,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:33,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:33,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:33,363 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:33,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:33,363 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [664874638] [2024-01-27 15:30:33,364 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [664874638] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:33,364 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:33,364 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:33,364 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840816945] [2024-01-27 15:30:33,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:33,364 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:33,364 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:33,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:33,364 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:33,365 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:33,365 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 222 places, 226 transitions, 4130 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:33,365 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:33,365 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:33,365 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:33,846 INFO L124 PetriNetUnfolderBase]: 1805/3057 cut-off events. [2024-01-27 15:30:33,846 INFO L125 PetriNetUnfolderBase]: For 32825/32825 co-relation queries the response was YES. [2024-01-27 15:30:33,864 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20471 conditions, 3057 events. 1805/3057 cut-off events. For 32825/32825 co-relation queries the response was YES. Maximal size of possible extension queue 170. Compared 17039 event pairs, 647 based on Foata normal form. 12/3069 useless extension candidates. Maximal degree in co-relation 20391. Up to 2146 conditions per place. [2024-01-27 15:30:33,873 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 173 selfloop transitions, 79 changer transitions 1/254 dead transitions. [2024-01-27 15:30:33,873 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 230 places, 254 transitions, 4816 flow [2024-01-27 15:30:33,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:33,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:33,874 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-01-27 15:30:33,874 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2024-01-27 15:30:33,874 INFO L175 Difference]: Start difference. First operand has 222 places, 226 transitions, 4130 flow. Second operand 9 states and 101 transitions. [2024-01-27 15:30:33,874 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 230 places, 254 transitions, 4816 flow [2024-01-27 15:30:33,969 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 221 places, 254 transitions, 4640 flow, removed 9 selfloop flow, removed 9 redundant places. [2024-01-27 15:30:33,981 INFO L231 Difference]: Finished difference. Result has 223 places, 225 transitions, 4069 flow [2024-01-27 15:30:33,981 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3888, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=145, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4069, PETRI_PLACES=223, PETRI_TRANSITIONS=225} [2024-01-27 15:30:33,981 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-01-27 15:30:33,981 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 225 transitions, 4069 flow [2024-01-27 15:30:33,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:33,982 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:33,982 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:33,982 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable68 [2024-01-27 15:30:33,982 INFO L420 AbstractCegarLoop]: === Iteration 70 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:33,982 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:33,982 INFO L85 PathProgramCache]: Analyzing trace with hash 66644722, now seen corresponding path program 17 times [2024-01-27 15:30:33,982 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:33,982 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [814927155] [2024-01-27 15:30:33,982 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:33,983 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:33,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:34,149 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:34,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:34,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [814927155] [2024-01-27 15:30:34,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [814927155] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:34,149 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:34,149 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:34,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1963917302] [2024-01-27 15:30:34,150 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:34,150 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:34,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:34,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:34,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:34,150 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:34,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 225 transitions, 4069 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:34,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:34,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:34,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:34,636 INFO L124 PetriNetUnfolderBase]: 1800/3054 cut-off events. [2024-01-27 15:30:34,637 INFO L125 PetriNetUnfolderBase]: For 31113/31113 co-relation queries the response was YES. [2024-01-27 15:30:34,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20330 conditions, 3054 events. 1800/3054 cut-off events. For 31113/31113 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17090 event pairs, 641 based on Foata normal form. 8/3062 useless extension candidates. Maximal degree in co-relation 20252. Up to 2156 conditions per place. [2024-01-27 15:30:34,666 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 169 selfloop transitions, 77 changer transitions 10/257 dead transitions. [2024-01-27 15:30:34,666 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 233 places, 257 transitions, 4784 flow [2024-01-27 15:30:34,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:34,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:34,667 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 108 transitions. [2024-01-27 15:30:34,667 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2805194805194805 [2024-01-27 15:30:34,667 INFO L175 Difference]: Start difference. First operand has 223 places, 225 transitions, 4069 flow. Second operand 11 states and 108 transitions. [2024-01-27 15:30:34,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 233 places, 257 transitions, 4784 flow [2024-01-27 15:30:34,756 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 257 transitions, 4590 flow, removed 5 selfloop flow, removed 14 redundant places. [2024-01-27 15:30:34,760 INFO L231 Difference]: Finished difference. Result has 221 places, 223 transitions, 3999 flow [2024-01-27 15:30:34,760 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3879, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3999, PETRI_PLACES=221, PETRI_TRANSITIONS=223} [2024-01-27 15:30:34,760 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 190 predicate places. [2024-01-27 15:30:34,760 INFO L495 AbstractCegarLoop]: Abstraction has has 221 places, 223 transitions, 3999 flow [2024-01-27 15:30:34,760 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:34,760 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:34,761 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:34,761 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable69 [2024-01-27 15:30:34,761 INFO L420 AbstractCegarLoop]: === Iteration 71 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:34,761 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:34,761 INFO L85 PathProgramCache]: Analyzing trace with hash -1347530736, now seen corresponding path program 12 times [2024-01-27 15:30:34,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:34,761 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437417286] [2024-01-27 15:30:34,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:34,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:34,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:34,931 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:34,931 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:34,931 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437417286] [2024-01-27 15:30:34,931 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437417286] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:34,931 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:34,931 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:34,931 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011942816] [2024-01-27 15:30:34,931 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:34,932 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:34,932 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:34,932 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:34,932 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:34,932 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:34,932 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 221 places, 223 transitions, 3999 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:34,932 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:34,932 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:34,932 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:35,443 INFO L124 PetriNetUnfolderBase]: 1830/3098 cut-off events. [2024-01-27 15:30:35,443 INFO L125 PetriNetUnfolderBase]: For 33200/33200 co-relation queries the response was YES. [2024-01-27 15:30:35,460 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20668 conditions, 3098 events. 1830/3098 cut-off events. For 33200/33200 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17422 event pairs, 599 based on Foata normal form. 30/3128 useless extension candidates. Maximal degree in co-relation 20596. Up to 2186 conditions per place. [2024-01-27 15:30:35,469 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 180 selfloop transitions, 87 changer transitions 0/268 dead transitions. [2024-01-27 15:30:35,469 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 268 transitions, 4908 flow [2024-01-27 15:30:35,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:35,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:35,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 103 transitions. [2024-01-27 15:30:35,470 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.326984126984127 [2024-01-27 15:30:35,470 INFO L175 Difference]: Start difference. First operand has 221 places, 223 transitions, 3999 flow. Second operand 9 states and 103 transitions. [2024-01-27 15:30:35,470 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 268 transitions, 4908 flow [2024-01-27 15:30:35,559 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 268 transitions, 4726 flow, removed 2 selfloop flow, removed 12 redundant places. [2024-01-27 15:30:35,563 INFO L231 Difference]: Finished difference. Result has 215 places, 225 transitions, 4035 flow [2024-01-27 15:30:35,563 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3821, PETRI_DIFFERENCE_MINUEND_PLACES=207, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=223, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=85, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=138, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=4035, PETRI_PLACES=215, PETRI_TRANSITIONS=225} [2024-01-27 15:30:35,564 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 184 predicate places. [2024-01-27 15:30:35,564 INFO L495 AbstractCegarLoop]: Abstraction has has 215 places, 225 transitions, 4035 flow [2024-01-27 15:30:35,564 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:35,564 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:35,564 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:35,564 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable70 [2024-01-27 15:30:35,564 INFO L420 AbstractCegarLoop]: === Iteration 72 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:35,565 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:35,565 INFO L85 PathProgramCache]: Analyzing trace with hash -1193093218, now seen corresponding path program 13 times [2024-01-27 15:30:35,565 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:35,565 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212157754] [2024-01-27 15:30:35,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:35,565 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:35,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:35,730 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:35,730 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:35,730 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212157754] [2024-01-27 15:30:35,731 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212157754] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:35,731 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:35,731 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:35,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505825458] [2024-01-27 15:30:35,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:35,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:35,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:35,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:35,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:35,732 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:35,732 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 215 places, 225 transitions, 4035 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:35,732 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:35,732 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:35,732 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:36,225 INFO L124 PetriNetUnfolderBase]: 1831/3105 cut-off events. [2024-01-27 15:30:36,225 INFO L125 PetriNetUnfolderBase]: For 31116/31116 co-relation queries the response was YES. [2024-01-27 15:30:36,242 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20812 conditions, 3105 events. 1831/3105 cut-off events. For 31116/31116 co-relation queries the response was YES. Maximal size of possible extension queue 176. Compared 17510 event pairs, 607 based on Foata normal form. 6/3111 useless extension candidates. Maximal degree in co-relation 20744. Up to 2186 conditions per place. [2024-01-27 15:30:36,252 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 169 selfloop transitions, 86 changer transitions 5/261 dead transitions. [2024-01-27 15:30:36,253 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 224 places, 261 transitions, 4821 flow [2024-01-27 15:30:36,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:36,253 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:36,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 101 transitions. [2024-01-27 15:30:36,253 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2885714285714286 [2024-01-27 15:30:36,253 INFO L175 Difference]: Start difference. First operand has 215 places, 225 transitions, 4035 flow. Second operand 10 states and 101 transitions. [2024-01-27 15:30:36,253 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 224 places, 261 transitions, 4821 flow [2024-01-27 15:30:36,350 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 261 transitions, 4642 flow, removed 4 selfloop flow, removed 6 redundant places. [2024-01-27 15:30:36,353 INFO L231 Difference]: Finished difference. Result has 220 places, 224 transitions, 4010 flow [2024-01-27 15:30:36,353 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3858, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=225, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=86, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=4010, PETRI_PLACES=220, PETRI_TRANSITIONS=224} [2024-01-27 15:30:36,354 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 189 predicate places. [2024-01-27 15:30:36,354 INFO L495 AbstractCegarLoop]: Abstraction has has 220 places, 224 transitions, 4010 flow [2024-01-27 15:30:36,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:36,354 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:36,354 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:36,354 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable71 [2024-01-27 15:30:36,354 INFO L420 AbstractCegarLoop]: === Iteration 73 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:36,354 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:36,354 INFO L85 PathProgramCache]: Analyzing trace with hash -1967954634, now seen corresponding path program 14 times [2024-01-27 15:30:36,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:36,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [861014701] [2024-01-27 15:30:36,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:36,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:36,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:36,513 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:36,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:36,514 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [861014701] [2024-01-27 15:30:36,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [861014701] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:36,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:36,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:36,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999725672] [2024-01-27 15:30:36,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:36,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:36,515 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:36,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:36,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:36,515 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:36,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 220 places, 224 transitions, 4010 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:36,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:36,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:36,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:36,997 INFO L124 PetriNetUnfolderBase]: 1836/3116 cut-off events. [2024-01-27 15:30:36,998 INFO L125 PetriNetUnfolderBase]: For 30533/30533 co-relation queries the response was YES. [2024-01-27 15:30:37,016 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20790 conditions, 3116 events. 1836/3116 cut-off events. For 30533/30533 co-relation queries the response was YES. Maximal size of possible extension queue 179. Compared 17553 event pairs, 623 based on Foata normal form. 6/3122 useless extension candidates. Maximal degree in co-relation 20720. Up to 2186 conditions per place. [2024-01-27 15:30:37,026 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 170 selfloop transitions, 83 changer transitions 11/265 dead transitions. [2024-01-27 15:30:37,026 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 265 transitions, 4843 flow [2024-01-27 15:30:37,026 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:37,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:37,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 107 transitions. [2024-01-27 15:30:37,027 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2779220779220779 [2024-01-27 15:30:37,027 INFO L175 Difference]: Start difference. First operand has 220 places, 224 transitions, 4010 flow. Second operand 11 states and 107 transitions. [2024-01-27 15:30:37,027 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 265 transitions, 4843 flow [2024-01-27 15:30:37,122 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 265 transitions, 4663 flow, removed 2 selfloop flow, removed 9 redundant places. [2024-01-27 15:30:37,125 INFO L231 Difference]: Finished difference. Result has 223 places, 223 transitions, 3986 flow [2024-01-27 15:30:37,126 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3834, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=83, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3986, PETRI_PLACES=223, PETRI_TRANSITIONS=223} [2024-01-27 15:30:37,126 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 192 predicate places. [2024-01-27 15:30:37,126 INFO L495 AbstractCegarLoop]: Abstraction has has 223 places, 223 transitions, 3986 flow [2024-01-27 15:30:37,126 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:37,126 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:37,126 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:37,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable72 [2024-01-27 15:30:37,126 INFO L420 AbstractCegarLoop]: === Iteration 74 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:37,127 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:37,127 INFO L85 PathProgramCache]: Analyzing trace with hash -1204205500, now seen corresponding path program 18 times [2024-01-27 15:30:37,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:37,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386581270] [2024-01-27 15:30:37,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:37,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:37,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:37,317 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:37,317 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:37,317 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386581270] [2024-01-27 15:30:37,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386581270] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:37,318 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:37,318 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:37,318 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [572670916] [2024-01-27 15:30:37,318 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:37,318 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:37,318 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:37,318 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:37,318 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:37,319 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:37,319 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 223 places, 223 transitions, 3986 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:37,319 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:37,319 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:37,319 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:37,783 INFO L124 PetriNetUnfolderBase]: 1804/3066 cut-off events. [2024-01-27 15:30:37,783 INFO L125 PetriNetUnfolderBase]: For 29799/29799 co-relation queries the response was YES. [2024-01-27 15:30:37,800 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20386 conditions, 3066 events. 1804/3066 cut-off events. For 29799/29799 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17231 event pairs, 609 based on Foata normal form. 8/3074 useless extension candidates. Maximal degree in co-relation 20314. Up to 2152 conditions per place. [2024-01-27 15:30:37,810 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 168 selfloop transitions, 82 changer transitions 7/258 dead transitions. [2024-01-27 15:30:37,810 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 258 transitions, 4704 flow [2024-01-27 15:30:37,810 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:37,810 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:37,810 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 100 transitions. [2024-01-27 15:30:37,810 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2857142857142857 [2024-01-27 15:30:37,810 INFO L175 Difference]: Start difference. First operand has 223 places, 223 transitions, 3986 flow. Second operand 10 states and 100 transitions. [2024-01-27 15:30:37,811 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 258 transitions, 4704 flow [2024-01-27 15:30:37,902 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 218 places, 258 transitions, 4532 flow, removed 4 selfloop flow, removed 10 redundant places. [2024-01-27 15:30:37,906 INFO L231 Difference]: Finished difference. Result has 218 places, 219 transitions, 3881 flow [2024-01-27 15:30:37,906 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3768, PETRI_DIFFERENCE_MINUEND_PLACES=209, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=221, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=82, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=139, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3881, PETRI_PLACES=218, PETRI_TRANSITIONS=219} [2024-01-27 15:30:37,906 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 187 predicate places. [2024-01-27 15:30:37,906 INFO L495 AbstractCegarLoop]: Abstraction has has 218 places, 219 transitions, 3881 flow [2024-01-27 15:30:37,907 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:37,907 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:37,907 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:37,907 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable73 [2024-01-27 15:30:37,907 INFO L420 AbstractCegarLoop]: === Iteration 75 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:37,907 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:37,907 INFO L85 PathProgramCache]: Analyzing trace with hash -965850826, now seen corresponding path program 15 times [2024-01-27 15:30:37,907 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:37,907 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1879719151] [2024-01-27 15:30:37,907 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:37,907 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:37,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:38,065 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:38,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:38,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1879719151] [2024-01-27 15:30:38,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1879719151] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:38,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:38,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964791351] [2024-01-27 15:30:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:38,066 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:38,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:38,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:38,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:38,067 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:38,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 219 transitions, 3881 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:38,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:38,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:38,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:38,572 INFO L124 PetriNetUnfolderBase]: 1791/3045 cut-off events. [2024-01-27 15:30:38,572 INFO L125 PetriNetUnfolderBase]: For 29801/29801 co-relation queries the response was YES. [2024-01-27 15:30:38,587 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20138 conditions, 3045 events. 1791/3045 cut-off events. For 29801/29801 co-relation queries the response was YES. Maximal size of possible extension queue 173. Compared 17173 event pairs, 531 based on Foata normal form. 10/3055 useless extension candidates. Maximal degree in co-relation 20070. Up to 1916 conditions per place. [2024-01-27 15:30:38,596 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 179 selfloop transitions, 75 changer transitions 17/272 dead transitions. [2024-01-27 15:30:38,597 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 227 places, 272 transitions, 4699 flow [2024-01-27 15:30:38,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-01-27 15:30:38,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2024-01-27 15:30:38,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 128 transitions. [2024-01-27 15:30:38,597 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3047619047619048 [2024-01-27 15:30:38,597 INFO L175 Difference]: Start difference. First operand has 218 places, 219 transitions, 3881 flow. Second operand 12 states and 128 transitions. [2024-01-27 15:30:38,597 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 227 places, 272 transitions, 4699 flow [2024-01-27 15:30:38,688 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 272 transitions, 4534 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:30:38,691 INFO L231 Difference]: Finished difference. Result has 219 places, 207 transitions, 3647 flow [2024-01-27 15:30:38,692 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3636, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=216, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=75, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=141, PETRI_DIFFERENCE_SUBTRAHEND_STATES=12, PETRI_FLOW=3647, PETRI_PLACES=219, PETRI_TRANSITIONS=207} [2024-01-27 15:30:38,692 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 188 predicate places. [2024-01-27 15:30:38,692 INFO L495 AbstractCegarLoop]: Abstraction has has 219 places, 207 transitions, 3647 flow [2024-01-27 15:30:38,692 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:38,693 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:38,693 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:38,693 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable74 [2024-01-27 15:30:38,693 INFO L420 AbstractCegarLoop]: === Iteration 76 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:38,693 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:38,693 INFO L85 PathProgramCache]: Analyzing trace with hash 43766040, now seen corresponding path program 16 times [2024-01-27 15:30:38,693 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:38,693 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1234809004] [2024-01-27 15:30:38,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:38,694 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:38,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:38,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:38,879 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:38,879 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1234809004] [2024-01-27 15:30:38,879 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1234809004] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:38,879 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:38,879 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:38,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1855742037] [2024-01-27 15:30:38,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:38,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:38,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:38,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:38,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:38,880 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:38,881 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 207 transitions, 3647 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:38,881 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:38,881 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:38,881 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:39,293 INFO L124 PetriNetUnfolderBase]: 1804/3058 cut-off events. [2024-01-27 15:30:39,293 INFO L125 PetriNetUnfolderBase]: For 34239/34239 co-relation queries the response was YES. [2024-01-27 15:30:39,308 INFO L83 FinitePrefix]: Finished finitePrefix Result has 20439 conditions, 3058 events. 1804/3058 cut-off events. For 34239/34239 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17082 event pairs, 619 based on Foata normal form. 30/3088 useless extension candidates. Maximal degree in co-relation 20372. Up to 2126 conditions per place. [2024-01-27 15:30:39,318 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 165 selfloop transitions, 73 changer transitions 0/239 dead transitions. [2024-01-27 15:30:39,318 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 239 transitions, 4384 flow [2024-01-27 15:30:39,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:39,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:39,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 100 transitions. [2024-01-27 15:30:39,319 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.31746031746031744 [2024-01-27 15:30:39,319 INFO L175 Difference]: Start difference. First operand has 219 places, 207 transitions, 3647 flow. Second operand 9 states and 100 transitions. [2024-01-27 15:30:39,319 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 239 transitions, 4384 flow [2024-01-27 15:30:39,387 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 239 transitions, 4216 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:39,390 INFO L231 Difference]: Finished difference. Result has 211 places, 209 transitions, 3680 flow [2024-01-27 15:30:39,390 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3483, PETRI_DIFFERENCE_MINUEND_PLACES=202, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=207, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=136, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3680, PETRI_PLACES=211, PETRI_TRANSITIONS=209} [2024-01-27 15:30:39,390 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 180 predicate places. [2024-01-27 15:30:39,390 INFO L495 AbstractCegarLoop]: Abstraction has has 211 places, 209 transitions, 3680 flow [2024-01-27 15:30:39,391 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:39,391 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:39,391 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:39,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable75 [2024-01-27 15:30:39,391 INFO L420 AbstractCegarLoop]: === Iteration 77 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:39,391 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:39,391 INFO L85 PathProgramCache]: Analyzing trace with hash 1693446348, now seen corresponding path program 17 times [2024-01-27 15:30:39,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:39,392 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [691749679] [2024-01-27 15:30:39,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:39,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:39,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:39,562 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:39,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:39,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [691749679] [2024-01-27 15:30:39,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [691749679] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:39,563 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:39,563 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:39,563 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639678221] [2024-01-27 15:30:39,563 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:39,563 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:39,563 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:39,563 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:39,563 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:39,564 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:39,564 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 211 places, 209 transitions, 3680 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:39,564 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:39,564 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:39,564 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:39,985 INFO L124 PetriNetUnfolderBase]: 1774/3028 cut-off events. [2024-01-27 15:30:39,985 INFO L125 PetriNetUnfolderBase]: For 30531/30531 co-relation queries the response was YES. [2024-01-27 15:30:40,000 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19776 conditions, 3028 events. 1774/3028 cut-off events. For 30531/30531 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 17058 event pairs, 649 based on Foata normal form. 30/3058 useless extension candidates. Maximal degree in co-relation 19708. Up to 2126 conditions per place. [2024-01-27 15:30:40,010 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 160 selfloop transitions, 74 changer transitions 1/236 dead transitions. [2024-01-27 15:30:40,010 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 236 transitions, 4262 flow [2024-01-27 15:30:40,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-01-27 15:30:40,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-01-27 15:30:40,014 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 101 transitions. [2024-01-27 15:30:40,014 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.32063492063492066 [2024-01-27 15:30:40,014 INFO L175 Difference]: Start difference. First operand has 211 places, 209 transitions, 3680 flow. Second operand 9 states and 101 transitions. [2024-01-27 15:30:40,014 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 236 transitions, 4262 flow [2024-01-27 15:30:40,078 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 212 places, 236 transitions, 4165 flow, removed 8 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:40,081 INFO L231 Difference]: Finished difference. Result has 212 places, 205 transitions, 3589 flow [2024-01-27 15:30:40,081 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3478, PETRI_DIFFERENCE_MINUEND_PLACES=204, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=206, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=74, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=132, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=3589, PETRI_PLACES=212, PETRI_TRANSITIONS=205} [2024-01-27 15:30:40,081 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 181 predicate places. [2024-01-27 15:30:40,081 INFO L495 AbstractCegarLoop]: Abstraction has has 212 places, 205 transitions, 3589 flow [2024-01-27 15:30:40,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:40,081 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:40,081 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:40,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable76 [2024-01-27 15:30:40,082 INFO L420 AbstractCegarLoop]: === Iteration 78 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:40,082 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:40,082 INFO L85 PathProgramCache]: Analyzing trace with hash 150638922, now seen corresponding path program 18 times [2024-01-27 15:30:40,082 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:40,082 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1350958712] [2024-01-27 15:30:40,082 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:40,082 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:40,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:40,242 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:40,242 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:40,242 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1350958712] [2024-01-27 15:30:40,242 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1350958712] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:40,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:40,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:40,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [913844547] [2024-01-27 15:30:40,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:40,243 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:40,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:40,243 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:40,243 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:40,243 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:40,243 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 205 transitions, 3589 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:40,243 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:40,243 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:40,244 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:40,699 INFO L124 PetriNetUnfolderBase]: 1774/3032 cut-off events. [2024-01-27 15:30:40,699 INFO L125 PetriNetUnfolderBase]: For 28886/28886 co-relation queries the response was YES. [2024-01-27 15:30:40,715 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19700 conditions, 3032 events. 1774/3032 cut-off events. For 28886/28886 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17051 event pairs, 655 based on Foata normal form. 6/3038 useless extension candidates. Maximal degree in co-relation 19634. Up to 2126 conditions per place. [2024-01-27 15:30:40,724 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 150 selfloop transitions, 72 changer transitions 5/228 dead transitions. [2024-01-27 15:30:40,725 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 221 places, 228 transitions, 4195 flow [2024-01-27 15:30:40,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:40,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:40,725 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 97 transitions. [2024-01-27 15:30:40,725 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.27714285714285714 [2024-01-27 15:30:40,725 INFO L175 Difference]: Start difference. First operand has 212 places, 205 transitions, 3589 flow. Second operand 10 states and 97 transitions. [2024-01-27 15:30:40,726 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 221 places, 228 transitions, 4195 flow [2024-01-27 15:30:40,788 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 228 transitions, 4077 flow, removed 0 selfloop flow, removed 12 redundant places. [2024-01-27 15:30:40,791 INFO L231 Difference]: Finished difference. Result has 210 places, 204 transitions, 3594 flow [2024-01-27 15:30:40,791 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3473, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=205, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=72, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3594, PETRI_PLACES=210, PETRI_TRANSITIONS=204} [2024-01-27 15:30:40,791 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 179 predicate places. [2024-01-27 15:30:40,791 INFO L495 AbstractCegarLoop]: Abstraction has has 210 places, 204 transitions, 3594 flow [2024-01-27 15:30:40,792 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:40,792 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:40,792 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:40,792 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable77 [2024-01-27 15:30:40,792 INFO L420 AbstractCegarLoop]: === Iteration 79 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:40,792 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:40,792 INFO L85 PathProgramCache]: Analyzing trace with hash -756345562, now seen corresponding path program 19 times [2024-01-27 15:30:40,792 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:40,793 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078965804] [2024-01-27 15:30:40,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:40,793 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:40,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:40,983 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:40,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:40,983 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078965804] [2024-01-27 15:30:40,983 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078965804] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:40,984 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:40,984 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:40,984 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1548885859] [2024-01-27 15:30:40,984 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:40,984 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:40,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:40,985 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:40,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:40,985 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:40,985 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 210 places, 204 transitions, 3594 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:40,985 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:40,985 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:40,985 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:41,423 INFO L124 PetriNetUnfolderBase]: 1772/3032 cut-off events. [2024-01-27 15:30:41,423 INFO L125 PetriNetUnfolderBase]: For 31504/31504 co-relation queries the response was YES. [2024-01-27 15:30:41,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19561 conditions, 3032 events. 1772/3032 cut-off events. For 31504/31504 co-relation queries the response was YES. Maximal size of possible extension queue 174. Compared 17092 event pairs, 647 based on Foata normal form. 8/3040 useless extension candidates. Maximal degree in co-relation 19500. Up to 2126 conditions per place. [2024-01-27 15:30:41,447 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 150 selfloop transitions, 71 changer transitions 7/229 dead transitions. [2024-01-27 15:30:41,447 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 217 places, 229 transitions, 4208 flow [2024-01-27 15:30:41,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:41,447 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:41,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 98 transitions. [2024-01-27 15:30:41,448 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.28 [2024-01-27 15:30:41,448 INFO L175 Difference]: Start difference. First operand has 210 places, 204 transitions, 3594 flow. Second operand 10 states and 98 transitions. [2024-01-27 15:30:41,448 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 217 places, 229 transitions, 4208 flow [2024-01-27 15:30:41,507 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 229 transitions, 4060 flow, removed 1 selfloop flow, removed 8 redundant places. [2024-01-27 15:30:41,510 INFO L231 Difference]: Finished difference. Result has 209 places, 203 transitions, 3566 flow [2024-01-27 15:30:41,510 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3448, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=204, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=71, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=133, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3566, PETRI_PLACES=209, PETRI_TRANSITIONS=203} [2024-01-27 15:30:41,510 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-01-27 15:30:41,510 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 203 transitions, 3566 flow [2024-01-27 15:30:41,510 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:41,510 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:41,510 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:41,511 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable78 [2024-01-27 15:30:41,511 INFO L420 AbstractCegarLoop]: === Iteration 80 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:41,511 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:41,511 INFO L85 PathProgramCache]: Analyzing trace with hash 1485815286, now seen corresponding path program 19 times [2024-01-27 15:30:41,511 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:41,511 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632608279] [2024-01-27 15:30:41,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:41,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:41,671 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:41,671 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:41,671 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632608279] [2024-01-27 15:30:41,671 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632608279] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:41,672 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:41,672 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:41,672 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684801434] [2024-01-27 15:30:41,672 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:41,672 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:41,672 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:41,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:41,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:41,672 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:41,672 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 203 transitions, 3566 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:41,673 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:41,673 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:41,673 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:42,122 INFO L124 PetriNetUnfolderBase]: 1763/3015 cut-off events. [2024-01-27 15:30:42,122 INFO L125 PetriNetUnfolderBase]: For 31284/31284 co-relation queries the response was YES. [2024-01-27 15:30:42,137 INFO L83 FinitePrefix]: Finished finitePrefix Result has 19388 conditions, 3015 events. 1763/3015 cut-off events. For 31284/31284 co-relation queries the response was YES. Maximal size of possible extension queue 172. Compared 16951 event pairs, 645 based on Foata normal form. 6/3021 useless extension candidates. Maximal degree in co-relation 19328. Up to 2116 conditions per place. [2024-01-27 15:30:42,146 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 147 selfloop transitions, 70 changer transitions 5/223 dead transitions. [2024-01-27 15:30:42,146 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 223 transitions, 4084 flow [2024-01-27 15:30:42,146 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:42,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:42,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 96 transitions. [2024-01-27 15:30:42,147 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2742857142857143 [2024-01-27 15:30:42,147 INFO L175 Difference]: Start difference. First operand has 209 places, 203 transitions, 3566 flow. Second operand 10 states and 96 transitions. [2024-01-27 15:30:42,147 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 223 transitions, 4084 flow [2024-01-27 15:30:42,201 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 223 transitions, 3944 flow, removed 0 selfloop flow, removed 7 redundant places. [2024-01-27 15:30:42,203 INFO L231 Difference]: Finished difference. Result has 209 places, 199 transitions, 3461 flow [2024-01-27 15:30:42,204 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3369, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=70, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=131, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3461, PETRI_PLACES=209, PETRI_TRANSITIONS=199} [2024-01-27 15:30:42,204 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 178 predicate places. [2024-01-27 15:30:42,204 INFO L495 AbstractCegarLoop]: Abstraction has has 209 places, 199 transitions, 3461 flow [2024-01-27 15:30:42,204 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:42,204 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:42,204 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:42,204 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable79 [2024-01-27 15:30:42,204 INFO L420 AbstractCegarLoop]: === Iteration 81 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:42,204 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:42,205 INFO L85 PathProgramCache]: Analyzing trace with hash -542161192, now seen corresponding path program 20 times [2024-01-27 15:30:42,205 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:42,205 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1339114510] [2024-01-27 15:30:42,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:42,205 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:42,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:42,360 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:42,360 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:42,360 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1339114510] [2024-01-27 15:30:42,360 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1339114510] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:42,360 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:42,361 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:42,361 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1640861361] [2024-01-27 15:30:42,361 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:42,361 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:42,361 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:42,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:42,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:42,361 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:42,362 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 209 places, 199 transitions, 3461 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:42,362 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:42,362 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:42,362 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:42,804 INFO L124 PetriNetUnfolderBase]: 1658/2805 cut-off events. [2024-01-27 15:30:42,804 INFO L125 PetriNetUnfolderBase]: For 29770/29770 co-relation queries the response was YES. [2024-01-27 15:30:42,817 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18315 conditions, 2805 events. 1658/2805 cut-off events. For 29770/29770 co-relation queries the response was YES. Maximal size of possible extension queue 166. Compared 15326 event pairs, 585 based on Foata normal form. 6/2811 useless extension candidates. Maximal degree in co-relation 18255. Up to 1946 conditions per place. [2024-01-27 15:30:42,826 INFO L140 encePairwiseOnDemand]: 24/35 looper letters, 140 selfloop transitions, 62 changer transitions 11/214 dead transitions. [2024-01-27 15:30:42,826 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 214 transitions, 3888 flow [2024-01-27 15:30:42,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-01-27 15:30:42,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11 states. [2024-01-27 15:30:42,826 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11 states to 11 states and 99 transitions. [2024-01-27 15:30:42,827 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.2571428571428571 [2024-01-27 15:30:42,827 INFO L175 Difference]: Start difference. First operand has 209 places, 199 transitions, 3461 flow. Second operand 11 states and 99 transitions. [2024-01-27 15:30:42,827 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 214 transitions, 3888 flow [2024-01-27 15:30:42,879 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 204 places, 214 transitions, 3628 flow, removed 0 selfloop flow, removed 11 redundant places. [2024-01-27 15:30:42,882 INFO L231 Difference]: Finished difference. Result has 204 places, 191 transitions, 3174 flow [2024-01-27 15:30:42,882 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=3123, PETRI_DIFFERENCE_MINUEND_PLACES=194, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=196, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=62, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=11, PETRI_FLOW=3174, PETRI_PLACES=204, PETRI_TRANSITIONS=191} [2024-01-27 15:30:42,882 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 173 predicate places. [2024-01-27 15:30:42,882 INFO L495 AbstractCegarLoop]: Abstraction has has 204 places, 191 transitions, 3174 flow [2024-01-27 15:30:42,882 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:42,882 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:42,882 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:42,882 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable80 [2024-01-27 15:30:42,883 INFO L420 AbstractCegarLoop]: === Iteration 82 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:42,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:42,893 INFO L85 PathProgramCache]: Analyzing trace with hash -1672231004, now seen corresponding path program 20 times [2024-01-27 15:30:42,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:42,893 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990945469] [2024-01-27 15:30:42,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:42,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:42,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:43,054 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:30:43,054 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:43,054 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990945469] [2024-01-27 15:30:43,054 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990945469] provided 1 perfect and 0 imperfect interpolant sequences [2024-01-27 15:30:43,055 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-01-27 15:30:43,055 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-01-27 15:30:43,055 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248456313] [2024-01-27 15:30:43,055 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-01-27 15:30:43,055 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-01-27 15:30:43,055 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:43,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-01-27 15:30:43,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-01-27 15:30:43,055 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:43,055 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 204 places, 191 transitions, 3174 flow. Second operand has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:43,055 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:43,055 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:43,056 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:43,461 INFO L124 PetriNetUnfolderBase]: 1578/2662 cut-off events. [2024-01-27 15:30:43,462 INFO L125 PetriNetUnfolderBase]: For 23124/23124 co-relation queries the response was YES. [2024-01-27 15:30:43,473 INFO L83 FinitePrefix]: Finished finitePrefix Result has 17338 conditions, 2662 events. 1578/2662 cut-off events. For 23124/23124 co-relation queries the response was YES. Maximal size of possible extension queue 159. Compared 14308 event pairs, 537 based on Foata normal form. 8/2670 useless extension candidates. Maximal degree in co-relation 17278. Up to 1826 conditions per place. [2024-01-27 15:30:43,480 INFO L140 encePairwiseOnDemand]: 25/35 looper letters, 136 selfloop transitions, 61 changer transitions 7/205 dead transitions. [2024-01-27 15:30:43,480 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 203 places, 205 transitions, 3593 flow [2024-01-27 15:30:43,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-01-27 15:30:43,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-01-27 15:30:43,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 92 transitions. [2024-01-27 15:30:43,481 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.26285714285714284 [2024-01-27 15:30:43,481 INFO L175 Difference]: Start difference. First operand has 204 places, 191 transitions, 3174 flow. Second operand 10 states and 92 transitions. [2024-01-27 15:30:43,481 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 203 places, 205 transitions, 3593 flow [2024-01-27 15:30:43,527 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 195 places, 205 transitions, 3460 flow, removed 0 selfloop flow, removed 8 redundant places. [2024-01-27 15:30:43,529 INFO L231 Difference]: Finished difference. Result has 195 places, 185 transitions, 3060 flow [2024-01-27 15:30:43,530 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2972, PETRI_DIFFERENCE_MINUEND_PLACES=186, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=187, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=61, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=3060, PETRI_PLACES=195, PETRI_TRANSITIONS=185} [2024-01-27 15:30:43,530 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 164 predicate places. [2024-01-27 15:30:43,530 INFO L495 AbstractCegarLoop]: Abstraction has has 195 places, 185 transitions, 3060 flow [2024-01-27 15:30:43,530 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.6) internal successors, (56), 10 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:43,530 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:43,530 INFO L208 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:43,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable81 [2024-01-27 15:30:43,530 INFO L420 AbstractCegarLoop]: === Iteration 83 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:43,531 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:43,531 INFO L85 PathProgramCache]: Analyzing trace with hash -1022404932, now seen corresponding path program 1 times [2024-01-27 15:30:43,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:43,531 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1338617004] [2024-01-27 15:30:43,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:43,531 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:43,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:43,744 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:43,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1338617004] [2024-01-27 15:30:43,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1338617004] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:43,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1718847371] [2024-01-27 15:30:43,744 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:43,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:43,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:43,745 INFO L229 MonitoredProcess]: Starting monitored process 42 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:43,746 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Waiting until timeout for monitored process [2024-01-27 15:30:43,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:43,902 INFO L262 TraceCheckSpWp]: Trace formula consists of 233 conjuncts, 29 conjunts are in the unsatisfiable core [2024-01-27 15:30:43,903 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:44,144 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:44,145 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:44,495 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:44,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1718847371] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:44,496 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:44,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 10, 10] total 29 [2024-01-27 15:30:44,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295091031] [2024-01-27 15:30:44,496 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:44,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 30 states [2024-01-27 15:30:44,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:44,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 30 interpolants. [2024-01-27 15:30:44,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=156, Invalid=714, Unknown=0, NotChecked=0, Total=870 [2024-01-27 15:30:44,497 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:44,497 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 195 places, 185 transitions, 3060 flow. Second operand has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:44,497 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:44,497 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:44,497 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:45,956 INFO L124 PetriNetUnfolderBase]: 4857/8217 cut-off events. [2024-01-27 15:30:45,956 INFO L125 PetriNetUnfolderBase]: For 71146/71146 co-relation queries the response was YES. [2024-01-27 15:30:45,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52977 conditions, 8217 events. 4857/8217 cut-off events. For 71146/71146 co-relation queries the response was YES. Maximal size of possible extension queue 456. Compared 55104 event pairs, 986 based on Foata normal form. 3/8220 useless extension candidates. Maximal degree in co-relation 52917. Up to 1713 conditions per place. [2024-01-27 15:30:46,028 INFO L140 encePairwiseOnDemand]: 21/35 looper letters, 541 selfloop transitions, 123 changer transitions 7/672 dead transitions. [2024-01-27 15:30:46,028 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 672 transitions, 11691 flow [2024-01-27 15:30:46,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-01-27 15:30:46,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-01-27 15:30:46,029 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 263 transitions. [2024-01-27 15:30:46,029 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3578231292517007 [2024-01-27 15:30:46,029 INFO L175 Difference]: Start difference. First operand has 195 places, 185 transitions, 3060 flow. Second operand 21 states and 263 transitions. [2024-01-27 15:30:46,029 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 672 transitions, 11691 flow [2024-01-27 15:30:46,273 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 672 transitions, 11328 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-01-27 15:30:46,279 INFO L231 Difference]: Finished difference. Result has 216 places, 293 transitions, 5512 flow [2024-01-27 15:30:46,279 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=2947, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=185, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=117, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=5512, PETRI_PLACES=216, PETRI_TRANSITIONS=293} [2024-01-27 15:30:46,280 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 185 predicate places. [2024-01-27 15:30:46,280 INFO L495 AbstractCegarLoop]: Abstraction has has 216 places, 293 transitions, 5512 flow [2024-01-27 15:30:46,280 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 30 states, 30 states have (on average 5.5) internal successors, (165), 30 states have internal predecessors, (165), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:46,280 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:46,280 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:46,291 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (42)] Ended with exit code 0 [2024-01-27 15:30:46,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable82,42 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:46,481 INFO L420 AbstractCegarLoop]: === Iteration 84 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:46,481 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:46,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1257481195, now seen corresponding path program 2 times [2024-01-27 15:30:46,481 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:46,481 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2088108870] [2024-01-27 15:30:46,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:46,481 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:46,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:46,628 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:46,628 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2088108870] [2024-01-27 15:30:46,628 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2088108870] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:46,628 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [23444390] [2024-01-27 15:30:46,628 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-01-27 15:30:46,628 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:46,628 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:46,629 INFO L229 MonitoredProcess]: Starting monitored process 43 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:46,630 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Waiting until timeout for monitored process [2024-01-27 15:30:46,766 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:30:46,767 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:46,768 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:30:46,768 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:47,048 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:47,048 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:47,675 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:30:47,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [23444390] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:47,675 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:47,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-01-27 15:30:47,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683142991] [2024-01-27 15:30:47,675 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:47,675 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-01-27 15:30:47,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:47,676 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-01-27 15:30:47,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=190, Invalid=802, Unknown=0, NotChecked=0, Total=992 [2024-01-27 15:30:47,676 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:47,676 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 216 places, 293 transitions, 5512 flow. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:47,676 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:47,676 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:47,676 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:30:52,445 INFO L124 PetriNetUnfolderBase]: 13233/22316 cut-off events. [2024-01-27 15:30:52,445 INFO L125 PetriNetUnfolderBase]: For 214251/214251 co-relation queries the response was YES. [2024-01-27 15:30:52,595 INFO L83 FinitePrefix]: Finished finitePrefix Result has 149231 conditions, 22316 events. 13233/22316 cut-off events. For 214251/214251 co-relation queries the response was YES. Maximal size of possible extension queue 1118. Compared 173929 event pairs, 2037 based on Foata normal form. 6/22318 useless extension candidates. Maximal degree in co-relation 149158. Up to 4621 conditions per place. [2024-01-27 15:30:52,671 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1470 selfloop transitions, 219 changer transitions 35/1725 dead transitions. [2024-01-27 15:30:52,671 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 254 places, 1725 transitions, 31368 flow [2024-01-27 15:30:52,672 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-01-27 15:30:52,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-01-27 15:30:52,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 578 transitions. [2024-01-27 15:30:52,672 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.42344322344322344 [2024-01-27 15:30:52,673 INFO L175 Difference]: Start difference. First operand has 216 places, 293 transitions, 5512 flow. Second operand 39 states and 578 transitions. [2024-01-27 15:30:52,673 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 254 places, 1725 transitions, 31368 flow [2024-01-27 15:30:54,712 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 252 places, 1725 transitions, 31203 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-01-27 15:30:54,724 INFO L231 Difference]: Finished difference. Result has 270 places, 436 transitions, 8612 flow [2024-01-27 15:30:54,725 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=5449, PETRI_DIFFERENCE_MINUEND_PLACES=214, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=293, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=81, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=205, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=8612, PETRI_PLACES=270, PETRI_TRANSITIONS=436} [2024-01-27 15:30:54,725 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 239 predicate places. [2024-01-27 15:30:54,725 INFO L495 AbstractCegarLoop]: Abstraction has has 270 places, 436 transitions, 8612 flow [2024-01-27 15:30:54,725 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:54,725 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:30:54,725 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:30:54,736 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (43)] Ended with exit code 0 [2024-01-27 15:30:54,925 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable83,43 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:54,926 INFO L420 AbstractCegarLoop]: === Iteration 85 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:30:54,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:30:54,926 INFO L85 PathProgramCache]: Analyzing trace with hash -838540556, now seen corresponding path program 3 times [2024-01-27 15:30:54,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:30:54,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [90332655] [2024-01-27 15:30:54,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:30:54,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:30:54,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:30:55,068 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:55,068 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:30:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [90332655] [2024-01-27 15:30:55,068 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [90332655] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:30:55,068 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2032718389] [2024-01-27 15:30:55,068 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-01-27 15:30:55,068 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:30:55,068 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:30:55,069 INFO L229 MonitoredProcess]: Starting monitored process 44 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:30:55,070 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Waiting until timeout for monitored process [2024-01-27 15:30:55,210 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-01-27 15:30:55,210 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:30:55,211 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:30:55,212 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:30:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:55,460 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:30:56,118 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-01-27 15:30:56,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2032718389] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:30:56,119 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:30:56,119 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 28 [2024-01-27 15:30:56,119 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562855920] [2024-01-27 15:30:56,119 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:30:56,119 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-01-27 15:30:56,119 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:30:56,119 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-01-27 15:30:56,120 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=157, Invalid=655, Unknown=0, NotChecked=0, Total=812 [2024-01-27 15:30:56,120 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:30:56,120 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 270 places, 436 transitions, 8612 flow. Second operand has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:30:56,120 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:30:56,120 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:30:56,120 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:04,678 INFO L124 PetriNetUnfolderBase]: 23854/40114 cut-off events. [2024-01-27 15:31:04,678 INFO L125 PetriNetUnfolderBase]: For 448547/448547 co-relation queries the response was YES. [2024-01-27 15:31:05,389 INFO L83 FinitePrefix]: Finished finitePrefix Result has 277773 conditions, 40114 events. 23854/40114 cut-off events. For 448547/448547 co-relation queries the response was YES. Maximal size of possible extension queue 2008. Compared 339505 event pairs, 3937 based on Foata normal form. 9/40120 useless extension candidates. Maximal degree in co-relation 277682. Up to 8345 conditions per place. [2024-01-27 15:31:05,563 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1506 selfloop transitions, 377 changer transitions 26/1910 dead transitions. [2024-01-27 15:31:05,564 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 303 places, 1910 transitions, 36441 flow [2024-01-27 15:31:05,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-01-27 15:31:05,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-01-27 15:31:05,565 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 564 transitions. [2024-01-27 15:31:05,565 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.4355212355212355 [2024-01-27 15:31:05,565 INFO L175 Difference]: Start difference. First operand has 270 places, 436 transitions, 8612 flow. Second operand 37 states and 564 transitions. [2024-01-27 15:31:05,565 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 303 places, 1910 transitions, 36441 flow [2024-01-27 15:31:12,948 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 291 places, 1910 transitions, 35926 flow, removed 103 selfloop flow, removed 12 redundant places. [2024-01-27 15:31:12,966 INFO L231 Difference]: Finished difference. Result has 307 places, 618 transitions, 13045 flow [2024-01-27 15:31:12,966 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=8364, PETRI_DIFFERENCE_MINUEND_PLACES=255, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=436, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=199, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=217, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=13045, PETRI_PLACES=307, PETRI_TRANSITIONS=618} [2024-01-27 15:31:12,966 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 276 predicate places. [2024-01-27 15:31:12,966 INFO L495 AbstractCegarLoop]: Abstraction has has 307 places, 618 transitions, 13045 flow [2024-01-27 15:31:12,967 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 5.896551724137931) internal successors, (171), 29 states have internal predecessors, (171), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:12,967 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:12,967 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:12,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (44)] Forceful destruction successful, exit code 0 [2024-01-27 15:31:13,168 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 44 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable84 [2024-01-27 15:31:13,168 INFO L420 AbstractCegarLoop]: === Iteration 86 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:13,168 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:13,168 INFO L85 PathProgramCache]: Analyzing trace with hash 1796632351, now seen corresponding path program 4 times [2024-01-27 15:31:13,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:13,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [624541826] [2024-01-27 15:31:13,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:13,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:13,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:13,340 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:13,340 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:13,340 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [624541826] [2024-01-27 15:31:13,341 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [624541826] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:31:13,341 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1617316166] [2024-01-27 15:31:13,341 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-01-27 15:31:13,341 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:13,341 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:13,342 INFO L229 MonitoredProcess]: Starting monitored process 45 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:31:13,342 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Waiting until timeout for monitored process [2024-01-27 15:31:13,505 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-01-27 15:31:13,505 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:31:13,507 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:31:13,507 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:31:13,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:13,780 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:31:14,404 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-01-27 15:31:14,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1617316166] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:31:14,404 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:31:14,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-01-27 15:31:14,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1852892639] [2024-01-27 15:31:14,404 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:31:14,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-01-27 15:31:14,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:14,405 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-01-27 15:31:14,405 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2024-01-27 15:31:14,406 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:31:14,406 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 307 places, 618 transitions, 13045 flow. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:14,406 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:14,406 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:31:14,406 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:24,392 INFO L124 PetriNetUnfolderBase]: 24454/41546 cut-off events. [2024-01-27 15:31:24,392 INFO L125 PetriNetUnfolderBase]: For 530265/530265 co-relation queries the response was YES. [2024-01-27 15:31:25,123 INFO L83 FinitePrefix]: Finished finitePrefix Result has 288577 conditions, 41546 events. 24454/41546 cut-off events. For 530265/530265 co-relation queries the response was YES. Maximal size of possible extension queue 2103. Compared 356867 event pairs, 3875 based on Foata normal form. 12/41558 useless extension candidates. Maximal degree in co-relation 288475. Up to 8345 conditions per place. [2024-01-27 15:31:25,438 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1445 selfloop transitions, 383 changer transitions 33/1862 dead transitions. [2024-01-27 15:31:25,439 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 343 places, 1862 transitions, 36931 flow [2024-01-27 15:31:25,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2024-01-27 15:31:25,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2024-01-27 15:31:25,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 534 transitions. [2024-01-27 15:31:25,440 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.3912087912087912 [2024-01-27 15:31:25,440 INFO L175 Difference]: Start difference. First operand has 307 places, 618 transitions, 13045 flow. Second operand 39 states and 534 transitions. [2024-01-27 15:31:25,440 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 343 places, 1862 transitions, 36931 flow [2024-01-27 15:31:34,216 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 326 places, 1862 transitions, 36479 flow, removed 92 selfloop flow, removed 17 redundant places. [2024-01-27 15:31:34,233 INFO L231 Difference]: Finished difference. Result has 338 places, 651 transitions, 14389 flow [2024-01-27 15:31:34,234 INFO L264 CegarLoopForPetriNet]: {PETRI_ALPHABET=35, PETRI_DIFFERENCE_MINUEND_FLOW=12631, PETRI_DIFFERENCE_MINUEND_PLACES=288, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=618, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=352, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=253, PETRI_DIFFERENCE_SUBTRAHEND_STATES=39, PETRI_FLOW=14389, PETRI_PLACES=338, PETRI_TRANSITIONS=651} [2024-01-27 15:31:34,234 INFO L281 CegarLoopForPetriNet]: 31 programPoint places, 307 predicate places. [2024-01-27 15:31:34,234 INFO L495 AbstractCegarLoop]: Abstraction has has 338 places, 651 transitions, 14389 flow [2024-01-27 15:31:34,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:34,234 INFO L200 CegarLoopForPetriNet]: Found error trace [2024-01-27 15:31:34,234 INFO L208 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-01-27 15:31:34,245 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (45)] Forceful destruction successful, exit code 0 [2024-01-27 15:31:34,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable85,45 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:34,446 INFO L420 AbstractCegarLoop]: === Iteration 87 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES] === [2024-01-27 15:31:34,446 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2024-01-27 15:31:34,446 INFO L85 PathProgramCache]: Analyzing trace with hash -1814094021, now seen corresponding path program 5 times [2024-01-27 15:31:34,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-01-27 15:31:34,446 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152107503] [2024-01-27 15:31:34,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-01-27 15:31:34,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-01-27 15:31:34,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-01-27 15:31:34,598 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:31:34,598 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-01-27 15:31:34,599 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152107503] [2024-01-27 15:31:34,599 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [152107503] provided 0 perfect and 1 imperfect interpolant sequences [2024-01-27 15:31:34,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1219416029] [2024-01-27 15:31:34,600 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-01-27 15:31:34,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-01-27 15:31:34,600 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-01-27 15:31:34,601 INFO L229 MonitoredProcess]: Starting monitored process 46 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-01-27 15:31:34,602 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (46)] Waiting until timeout for monitored process [2024-01-27 15:31:34,762 INFO L228 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-01-27 15:31:34,762 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-01-27 15:31:34,763 INFO L262 TraceCheckSpWp]: Trace formula consists of 242 conjuncts, 22 conjunts are in the unsatisfiable core [2024-01-27 15:31:34,764 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2024-01-27 15:31:35,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:31:35,025 INFO L327 TraceCheckSpWp]: Computing backward predicates... [2024-01-27 15:31:35,603 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-01-27 15:31:35,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1219416029] provided 0 perfect and 2 imperfect interpolant sequences [2024-01-27 15:31:35,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-01-27 15:31:35,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 11] total 31 [2024-01-27 15:31:35,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42571136] [2024-01-27 15:31:35,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-01-27 15:31:35,604 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 32 states [2024-01-27 15:31:35,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-01-27 15:31:35,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 32 interpolants. [2024-01-27 15:31:35,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=194, Invalid=798, Unknown=0, NotChecked=0, Total=992 [2024-01-27 15:31:35,605 INFO L471 CegarLoopForPetriNet]: Number of universal loopers: 3 out of 35 [2024-01-27 15:31:35,605 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 338 places, 651 transitions, 14389 flow. Second operand has 32 states, 32 states have (on average 5.625) internal successors, (180), 32 states have internal predecessors, (180), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-01-27 15:31:35,605 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-01-27 15:31:35,605 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 3 of 35 [2024-01-27 15:31:35,605 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-01-27 15:31:45,710 INFO L124 PetriNetUnfolderBase]: 24220/41054 cut-off events. [2024-01-27 15:31:45,710 INFO L125 PetriNetUnfolderBase]: For 573802/573802 co-relation queries the response was YES. [2024-01-27 15:31:46,571 INFO L83 FinitePrefix]: Finished finitePrefix Result has 291028 conditions, 41054 events. 24220/41054 cut-off events. For 573802/573802 co-relation queries the response was YES. Maximal size of possible extension queue 2040. Compared 350993 event pairs, 3981 based on Foata normal form. 12/41066 useless extension candidates. Maximal degree in co-relation 290917. Up to 8345 conditions per place. [2024-01-27 15:31:46,722 INFO L140 encePairwiseOnDemand]: 23/35 looper letters, 1448 selfloop transitions, 391 changer transitions 31/1871 dead transitions. [2024-01-27 15:31:46,722 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 372 places, 1871 transitions, 37459 flow [2024-01-27 15:31:46,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 38 states. [2024-01-27 15:31:46,723 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2024-01-27 15:31:46,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 540 transitions. [2024-01-27 15:31:46,723 INFO L516 CegarLoopForPetriNet]: DFA transition density 0.40601503759398494 [2024-01-27 15:31:46,723 INFO L175 Difference]: Start difference. First operand has 338 places, 651 transitions, 14389 flow. Second operand 38 states and 540 transitions. [2024-01-27 15:31:46,723 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 372 places, 1871 transitions, 37459 flow