./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 826ab2ba Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd --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 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-826ab2b [2024-11-13 14:59:31,026 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-13 14:59:31,124 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-13 14:59:31,132 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-13 14:59:31,133 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-13 14:59:31,162 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-13 14:59:31,163 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-13 14:59:31,163 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-13 14:59:31,164 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-13 14:59:31,164 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-13 14:59:31,164 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-13 14:59:31,164 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-13 14:59:31,164 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * Use SBE=true [2024-11-13 14:59:31,165 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-13 14:59:31,165 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-13 14:59:31,166 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-13 14:59:31,167 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-13 14:59:31,167 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-13 14:59:31,167 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-13 14:59:31,167 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-13 14:59:31,167 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:59:31,167 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-13 14:59:31,167 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-13 14:59:31,168 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-13 14:59:31,168 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-13 14:59:31,168 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-13 14:59:31,171 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-13 14:59:31,171 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-13 14:59:31,172 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-13 14:59:31,172 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-13 14:59:31,172 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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 -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd 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 -> 3855d6da0b439f4c6a497e897f140f408df8c7fd65e3042f0fafae1979048a3d [2024-11-13 14:59:31,637 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-13 14:59:31,653 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-13 14:59:31,661 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-13 14:59:31,663 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-13 14:59:31,663 INFO L274 PluginConnector]: CDTParser initialized [2024-11-13 14:59:31,665 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/../../sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c Unable to find full path for "g++" [2024-11-13 14:59:33,935 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-13 14:59:34,404 INFO L384 CDTParser]: Found 1 translation units. [2024-11-13 14:59:34,407 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c [2024-11-13 14:59:34,419 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/data/b0fdd91d8/40fad330bddc4d608cc7c9a8bd740d00/FLAG2e4247a83 [2024-11-13 14:59:34,440 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/data/b0fdd91d8/40fad330bddc4d608cc7c9a8bd740d00 [2024-11-13 14:59:34,443 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-13 14:59:34,445 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-13 14:59:34,447 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:34,448 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-13 14:59:34,454 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-13 14:59:34,455 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:34,456 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2425741c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34, skipping insertion in model container [2024-11-13 14:59:34,456 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:34,495 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-13 14:59:34,786 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-11-13 14:59:34,808 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:34,827 INFO L200 MainTranslator]: Completed pre-run [2024-11-13 14:59:34,897 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/sv-benchmarks/c/weaver/chl-name-comparator-subst.wvr.c[4875,4888] [2024-11-13 14:59:34,907 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-13 14:59:34,934 INFO L204 MainTranslator]: Completed translation [2024-11-13 14:59:34,935 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34 WrapperNode [2024-11-13 14:59:34,936 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-13 14:59:34,937 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-13 14:59:34,937 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-13 14:59:34,938 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-13 14:59:34,948 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:34,962 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,026 INFO L138 Inliner]: procedures = 25, calls = 29, calls flagged for inlining = 17, calls inlined = 21, statements flattened = 300 [2024-11-13 14:59:35,027 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-13 14:59:35,027 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-13 14:59:35,028 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-13 14:59:35,028 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-13 14:59:35,044 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,044 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,049 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,094 INFO L175 MemorySlicer]: Split 6 memory accesses to 2 slices as follows [2, 4]. 67 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-13 14:59:35,094 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,094 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,110 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,118 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,120 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,122 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,129 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-13 14:59:35,134 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-13 14:59:35,134 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-13 14:59:35,134 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-13 14:59:35,135 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (1/1) ... [2024-11-13 14:59:35,145 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-13 14:59:35,169 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:35,184 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-13 14:59:35,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-13 14:59:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-13 14:59:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-13 14:59:35,222 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-13 14:59:35,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-13 14:59:35,223 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-13 14:59:35,223 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-13 14:59:35,229 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-13 14:59:35,387 INFO L238 CfgBuilder]: Building ICFG [2024-11-13 14:59:35,390 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-13 14:59:36,261 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-13 14:59:36,262 INFO L287 CfgBuilder]: Performing block encoding [2024-11-13 14:59:37,090 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-13 14:59:37,091 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-13 14:59:37,091 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:59:37 BoogieIcfgContainer [2024-11-13 14:59:37,092 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-13 14:59:37,096 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-13 14:59:37,098 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-13 14:59:37,104 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-13 14:59:37,104 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.11 02:59:34" (1/3) ... [2024-11-13 14:59:37,105 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e0be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:59:37, skipping insertion in model container [2024-11-13 14:59:37,106 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.11 02:59:34" (2/3) ... [2024-11-13 14:59:37,107 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30e0be36 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.11 02:59:37, skipping insertion in model container [2024-11-13 14:59:37,107 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.11 02:59:37" (3/3) ... [2024-11-13 14:59:37,109 INFO L112 eAbstractionObserver]: Analyzing ICFG chl-name-comparator-subst.wvr.c [2024-11-13 14:59:37,130 INFO L217 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-13 14:59:37,132 INFO L154 ceAbstractionStarter]: Applying trace abstraction to ICFG chl-name-comparator-subst.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-13 14:59:37,132 INFO L492 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-13 14:59:37,257 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-13 14:59:37,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 36 transitions, 93 flow [2024-11-13 14:59:37,379 INFO L124 PetriNetUnfolderBase]: 7/33 cut-off events. [2024-11-13 14:59:37,386 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 14:59:37,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 46 conditions, 33 events. 7/33 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 37 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 27. Up to 2 conditions per place. [2024-11-13 14:59:37,397 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 36 transitions, 93 flow [2024-11-13 14:59:37,402 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 32 transitions, 82 flow [2024-11-13 14:59:37,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-13 14:59:37,437 INFO L333 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, 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;@4da61e6d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-13 14:59:37,440 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-13 14:59:37,476 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-13 14:59:37,477 INFO L124 PetriNetUnfolderBase]: 7/31 cut-off events. [2024-11-13 14:59:37,477 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-13 14:59:37,477 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:37,478 INFO L204 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] [2024-11-13 14:59:37,479 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:37,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:37,488 INFO L85 PathProgramCache]: Analyzing trace with hash -1331590475, now seen corresponding path program 1 times [2024-11-13 14:59:37,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:37,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [458881044] [2024-11-13 14:59:37,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:37,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:37,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:37,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:37,916 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [458881044] [2024-11-13 14:59:37,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [458881044] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:37,921 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:37,922 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:59:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11925859] [2024-11-13 14:59:37,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:37,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-13 14:59:37,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:37,971 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-13 14:59:37,971 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-13 14:59:37,973 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:37,976 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 32 transitions, 82 flow. Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 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) [2024-11-13 14:59:37,976 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:37,976 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:37,977 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:38,491 INFO L124 PetriNetUnfolderBase]: 792/1137 cut-off events. [2024-11-13 14:59:38,492 INFO L125 PetriNetUnfolderBase]: For 93/93 co-relation queries the response was YES. [2024-11-13 14:59:38,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2371 conditions, 1137 events. 792/1137 cut-off events. For 93/93 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3703 event pairs, 608 based on Foata normal form. 0/953 useless extension candidates. Maximal degree in co-relation 2150. Up to 1137 conditions per place. [2024-11-13 14:59:38,514 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 28 selfloop transitions, 0 changer transitions 0/29 dead transitions. [2024-11-13 14:59:38,515 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 36 places, 29 transitions, 132 flow [2024-11-13 14:59:38,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-13 14:59:38,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-11-13 14:59:38,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 39 transitions. [2024-11-13 14:59:38,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5416666666666666 [2024-11-13 14:59:38,542 INFO L175 Difference]: Start difference. First operand has 35 places, 32 transitions, 82 flow. Second operand 2 states and 39 transitions. [2024-11-13 14:59:38,543 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 36 places, 29 transitions, 132 flow [2024-11-13 14:59:38,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 30 places, 29 transitions, 120 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-13 14:59:38,559 INFO L231 Difference]: Finished difference. Result has 30 places, 29 transitions, 64 flow [2024-11-13 14:59:38,562 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=64, PETRI_PLACES=30, PETRI_TRANSITIONS=29} [2024-11-13 14:59:38,568 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -5 predicate places. [2024-11-13 14:59:38,568 INFO L471 AbstractCegarLoop]: Abstraction has has 30 places, 29 transitions, 64 flow [2024-11-13 14:59:38,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 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) [2024-11-13 14:59:38,569 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:38,569 INFO L204 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] [2024-11-13 14:59:38,569 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-13 14:59:38,570 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:38,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:38,570 INFO L85 PathProgramCache]: Analyzing trace with hash -718444640, now seen corresponding path program 1 times [2024-11-13 14:59:38,571 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:38,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [786815037] [2024-11-13 14:59:38,571 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:38,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:38,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:38,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:38,998 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:38,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [786815037] [2024-11-13 14:59:38,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [786815037] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:38,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:38,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-13 14:59:38,998 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055073641] [2024-11-13 14:59:38,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:39,001 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-13 14:59:39,001 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:39,002 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-13 14:59:39,002 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-13 14:59:39,002 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:39,003 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 30 places, 29 transitions, 64 flow. Second operand has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:39,003 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:39,003 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:39,003 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:39,430 INFO L124 PetriNetUnfolderBase]: 792/1138 cut-off events. [2024-11-13 14:59:39,430 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-13 14:59:39,436 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2309 conditions, 1138 events. 792/1138 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3693 event pairs, 608 based on Foata normal form. 0/954 useless extension candidates. Maximal degree in co-relation 2306. Up to 1137 conditions per place. [2024-11-13 14:59:39,447 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 2 changer transitions 0/30 dead transitions. [2024-11-13 14:59:39,448 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 32 places, 30 transitions, 124 flow [2024-11-13 14:59:39,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-13 14:59:39,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-13 14:59:39,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 42 transitions. [2024-11-13 14:59:39,450 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.3888888888888889 [2024-11-13 14:59:39,450 INFO L175 Difference]: Start difference. First operand has 30 places, 29 transitions, 64 flow. Second operand 3 states and 42 transitions. [2024-11-13 14:59:39,450 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 32 places, 30 transitions, 124 flow [2024-11-13 14:59:39,451 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 30 transitions, 124 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-11-13 14:59:39,454 INFO L231 Difference]: Finished difference. Result has 33 places, 30 transitions, 76 flow [2024-11-13 14:59:39,454 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=30, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=76, PETRI_PLACES=33, PETRI_TRANSITIONS=30} [2024-11-13 14:59:39,455 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, -2 predicate places. [2024-11-13 14:59:39,455 INFO L471 AbstractCegarLoop]: Abstraction has has 33 places, 30 transitions, 76 flow [2024-11-13 14:59:39,455 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 12.0) internal successors, (36), 3 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:39,455 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:39,455 INFO L204 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] [2024-11-13 14:59:39,456 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-13 14:59:39,456 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:39,457 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:39,457 INFO L85 PathProgramCache]: Analyzing trace with hash -1755550957, now seen corresponding path program 1 times [2024-11-13 14:59:39,457 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:39,457 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780846576] [2024-11-13 14:59:39,458 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:39,458 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:39,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:39,796 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:39,796 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:39,796 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780846576] [2024-11-13 14:59:39,796 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1780846576] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-13 14:59:39,797 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1295973093] [2024-11-13 14:59:39,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:39,797 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-13 14:59:39,798 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 [2024-11-13 14:59:39,802 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-13 14:59:39,804 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-13 14:59:40,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:40,011 INFO L255 TraceCheckSpWp]: Trace formula consists of 215 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-13 14:59:40,019 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-13 14:59:40,117 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:40,119 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-13 14:59:40,162 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-13 14:59:40,162 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1295973093] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-13 14:59:40,162 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-13 14:59:40,162 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2024-11-13 14:59:40,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469056551] [2024-11-13 14:59:40,163 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-13 14:59:40,163 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 14:59:40,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:40,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 14:59:40,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 14:59:40,164 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:40,165 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 30 transitions, 76 flow. Second operand has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:40,165 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:40,165 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:40,167 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:40,570 INFO L124 PetriNetUnfolderBase]: 792/1140 cut-off events. [2024-11-13 14:59:40,571 INFO L125 PetriNetUnfolderBase]: For 21/21 co-relation queries the response was YES. [2024-11-13 14:59:40,574 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2322 conditions, 1140 events. 792/1140 cut-off events. For 21/21 co-relation queries the response was YES. Maximal size of possible extension queue 46. Compared 3693 event pairs, 608 based on Foata normal form. 0/956 useless extension candidates. Maximal degree in co-relation 2317. Up to 1137 conditions per place. [2024-11-13 14:59:40,581 INFO L140 encePairwiseOnDemand]: 33/36 looper letters, 27 selfloop transitions, 4 changer transitions 0/32 dead transitions. [2024-11-13 14:59:40,582 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 32 transitions, 146 flow [2024-11-13 14:59:40,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-13 14:59:40,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-13 14:59:40,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2024-11-13 14:59:40,584 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.29444444444444445 [2024-11-13 14:59:40,584 INFO L175 Difference]: Start difference. First operand has 33 places, 30 transitions, 76 flow. Second operand 5 states and 53 transitions. [2024-11-13 14:59:40,584 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 32 transitions, 146 flow [2024-11-13 14:59:40,585 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 32 transitions, 142 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:40,588 INFO L231 Difference]: Finished difference. Result has 38 places, 32 transitions, 98 flow [2024-11-13 14:59:40,588 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=72, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=30, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=98, PETRI_PLACES=38, PETRI_TRANSITIONS=32} [2024-11-13 14:59:40,589 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-13 14:59:40,589 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 32 transitions, 98 flow [2024-11-13 14:59:40,589 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.428571428571429) internal successors, (59), 7 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:40,590 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:40,590 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:40,620 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-13 14:59:40,795 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_019d433a-aec2-4ffa-9b7a-53dacdb131a2/bin/uautomizer-verify-qhAvR1uOyd/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-13 14:59:40,796 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:40,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:40,797 INFO L85 PathProgramCache]: Analyzing trace with hash 227133619, now seen corresponding path program 2 times [2024-11-13 14:59:40,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:40,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [80525426] [2024-11-13 14:59:40,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:40,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:40,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:42,201 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:42,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:42,202 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [80525426] [2024-11-13 14:59:42,202 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [80525426] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:42,202 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:42,202 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:59:42,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370590216] [2024-11-13 14:59:42,202 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:42,203 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:59:42,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:42,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:59:42,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:59:42,204 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:42,205 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 32 transitions, 98 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:42,205 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:42,206 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:42,206 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:43,175 INFO L124 PetriNetUnfolderBase]: 1926/2789 cut-off events. [2024-11-13 14:59:43,175 INFO L125 PetriNetUnfolderBase]: For 70/70 co-relation queries the response was YES. [2024-11-13 14:59:43,181 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5646 conditions, 2789 events. 1926/2789 cut-off events. For 70/70 co-relation queries the response was YES. Maximal size of possible extension queue 119. Compared 11893 event pairs, 608 based on Foata normal form. 1/2306 useless extension candidates. Maximal degree in co-relation 5639. Up to 1184 conditions per place. [2024-11-13 14:59:43,193 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 75 selfloop transitions, 7 changer transitions 11/94 dead transitions. [2024-11-13 14:59:43,194 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 94 transitions, 421 flow [2024-11-13 14:59:43,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:59:43,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:59:43,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 115 transitions. [2024-11-13 14:59:43,196 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5324074074074074 [2024-11-13 14:59:43,196 INFO L175 Difference]: Start difference. First operand has 38 places, 32 transitions, 98 flow. Second operand 6 states and 115 transitions. [2024-11-13 14:59:43,196 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 94 transitions, 421 flow [2024-11-13 14:59:43,198 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 94 transitions, 411 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:43,203 INFO L231 Difference]: Finished difference. Result has 46 places, 38 transitions, 139 flow [2024-11-13 14:59:43,203 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=88, PETRI_DIFFERENCE_MINUEND_PLACES=37, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=27, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=139, PETRI_PLACES=46, PETRI_TRANSITIONS=38} [2024-11-13 14:59:43,204 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 11 predicate places. [2024-11-13 14:59:43,204 INFO L471 AbstractCegarLoop]: Abstraction has has 46 places, 38 transitions, 139 flow [2024-11-13 14:59:43,204 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:43,204 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:43,204 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:43,205 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-13 14:59:43,205 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:43,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:43,206 INFO L85 PathProgramCache]: Analyzing trace with hash 1498129551, now seen corresponding path program 3 times [2024-11-13 14:59:43,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:43,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [375644440] [2024-11-13 14:59:43,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:43,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:43,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:44,485 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:44,487 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:44,487 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [375644440] [2024-11-13 14:59:44,487 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [375644440] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:44,487 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:44,487 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:59:44,488 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810967676] [2024-11-13 14:59:44,488 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:44,488 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:59:44,488 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:44,489 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:59:44,489 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:59:44,491 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:44,492 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 46 places, 38 transitions, 139 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:44,492 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:44,492 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:44,492 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:46,231 INFO L124 PetriNetUnfolderBase]: 3751/5506 cut-off events. [2024-11-13 14:59:46,231 INFO L125 PetriNetUnfolderBase]: For 2338/2338 co-relation queries the response was YES. [2024-11-13 14:59:46,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 13523 conditions, 5506 events. 3751/5506 cut-off events. For 2338/2338 co-relation queries the response was YES. Maximal size of possible extension queue 225. Compared 27845 event pairs, 1499 based on Foata normal form. 1/5207 useless extension candidates. Maximal degree in co-relation 13511. Up to 2756 conditions per place. [2024-11-13 14:59:46,284 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 108 selfloop transitions, 15 changer transitions 1/125 dead transitions. [2024-11-13 14:59:46,285 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 51 places, 125 transitions, 701 flow [2024-11-13 14:59:46,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:59:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:59:46,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 127 transitions. [2024-11-13 14:59:46,289 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.503968253968254 [2024-11-13 14:59:46,290 INFO L175 Difference]: Start difference. First operand has 46 places, 38 transitions, 139 flow. Second operand 7 states and 127 transitions. [2024-11-13 14:59:46,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 51 places, 125 transitions, 701 flow [2024-11-13 14:59:46,310 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 125 transitions, 695 flow, removed 3 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:46,313 INFO L231 Difference]: Finished difference. Result has 55 places, 52 transitions, 291 flow [2024-11-13 14:59:46,313 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=137, PETRI_DIFFERENCE_MINUEND_PLACES=44, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=38, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=26, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=291, PETRI_PLACES=55, PETRI_TRANSITIONS=52} [2024-11-13 14:59:46,314 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 20 predicate places. [2024-11-13 14:59:46,315 INFO L471 AbstractCegarLoop]: Abstraction has has 55 places, 52 transitions, 291 flow [2024-11-13 14:59:46,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:46,315 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:46,315 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:46,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-13 14:59:46,316 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:46,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:46,317 INFO L85 PathProgramCache]: Analyzing trace with hash -427593753, now seen corresponding path program 4 times [2024-11-13 14:59:46,317 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:46,317 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [874530639] [2024-11-13 14:59:46,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:46,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:46,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:47,195 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:47,196 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:47,196 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [874530639] [2024-11-13 14:59:47,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [874530639] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:47,196 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:47,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:59:47,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981004740] [2024-11-13 14:59:47,197 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:47,197 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:59:47,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:47,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:59:47,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:59:47,198 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:47,198 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 55 places, 52 transitions, 291 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:47,198 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:47,198 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:47,198 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:49,152 INFO L124 PetriNetUnfolderBase]: 5539/8071 cut-off events. [2024-11-13 14:59:49,152 INFO L125 PetriNetUnfolderBase]: For 12250/12250 co-relation queries the response was YES. [2024-11-13 14:59:49,179 INFO L83 FinitePrefix]: Finished finitePrefix Result has 24637 conditions, 8071 events. 5539/8071 cut-off events. For 12250/12250 co-relation queries the response was YES. Maximal size of possible extension queue 309. Compared 41203 event pairs, 2215 based on Foata normal form. 3/8074 useless extension candidates. Maximal degree in co-relation 24620. Up to 3833 conditions per place. [2024-11-13 14:59:49,215 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 82 selfloop transitions, 20 changer transitions 14/117 dead transitions. [2024-11-13 14:59:49,215 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 60 places, 117 transitions, 791 flow [2024-11-13 14:59:49,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 14:59:49,216 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 14:59:49,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-11-13 14:59:49,217 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-11-13 14:59:49,217 INFO L175 Difference]: Start difference. First operand has 55 places, 52 transitions, 291 flow. Second operand 6 states and 110 transitions. [2024-11-13 14:59:49,217 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 60 places, 117 transitions, 791 flow [2024-11-13 14:59:49,242 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 117 transitions, 767 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:49,245 INFO L231 Difference]: Finished difference. Result has 63 places, 57 transitions, 403 flow [2024-11-13 14:59:49,245 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=275, PETRI_DIFFERENCE_MINUEND_PLACES=54, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=52, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=15, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=34, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=403, PETRI_PLACES=63, PETRI_TRANSITIONS=57} [2024-11-13 14:59:49,247 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 28 predicate places. [2024-11-13 14:59:49,247 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 57 transitions, 403 flow [2024-11-13 14:59:49,248 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:49,248 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:49,248 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:49,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-13 14:59:49,249 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:49,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:49,250 INFO L85 PathProgramCache]: Analyzing trace with hash -2120624487, now seen corresponding path program 5 times [2024-11-13 14:59:49,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:49,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433490404] [2024-11-13 14:59:49,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:49,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:49,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:50,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:50,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433490404] [2024-11-13 14:59:50,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433490404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:50,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:50,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:59:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1327340063] [2024-11-13 14:59:50,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:50,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:59:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:59:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:59:50,280 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:50,280 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 57 transitions, 403 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:50,280 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:50,282 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:50,282 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:53,067 INFO L124 PetriNetUnfolderBase]: 7182/10609 cut-off events. [2024-11-13 14:59:53,068 INFO L125 PetriNetUnfolderBase]: For 28309/28309 co-relation queries the response was YES. [2024-11-13 14:59:53,118 INFO L83 FinitePrefix]: Finished finitePrefix Result has 35608 conditions, 10609 events. 7182/10609 cut-off events. For 28309/28309 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 60746 event pairs, 2432 based on Foata normal form. 1/10610 useless extension candidates. Maximal degree in co-relation 35587. Up to 4252 conditions per place. [2024-11-13 14:59:53,171 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 146 selfloop transitions, 19 changer transitions 3/169 dead transitions. [2024-11-13 14:59:53,173 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 169 transitions, 1502 flow [2024-11-13 14:59:53,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:59:53,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:59:53,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-13 14:59:53,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-13 14:59:53,175 INFO L175 Difference]: Start difference. First operand has 63 places, 57 transitions, 403 flow. Second operand 7 states and 136 transitions. [2024-11-13 14:59:53,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 169 transitions, 1502 flow [2024-11-13 14:59:53,332 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 67 places, 169 transitions, 1446 flow, removed 28 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:53,336 INFO L231 Difference]: Finished difference. Result has 72 places, 72 transitions, 622 flow [2024-11-13 14:59:53,337 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=391, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=57, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=622, PETRI_PLACES=72, PETRI_TRANSITIONS=72} [2024-11-13 14:59:53,337 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 37 predicate places. [2024-11-13 14:59:53,337 INFO L471 AbstractCegarLoop]: Abstraction has has 72 places, 72 transitions, 622 flow [2024-11-13 14:59:53,338 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:53,338 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:53,338 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:53,338 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-13 14:59:53,338 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:53,339 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:53,339 INFO L85 PathProgramCache]: Analyzing trace with hash -1150920097, now seen corresponding path program 6 times [2024-11-13 14:59:53,339 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:53,339 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1600783153] [2024-11-13 14:59:53,339 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:53,339 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:53,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:54,264 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:54,264 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:54,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1600783153] [2024-11-13 14:59:54,265 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1600783153] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:54,265 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:54,265 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 14:59:54,265 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1868538461] [2024-11-13 14:59:54,265 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:54,266 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 14:59:54,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:54,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 14:59:54,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 14:59:54,268 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:54,268 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 72 places, 72 transitions, 622 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:54,269 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:54,269 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:54,269 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 14:59:56,771 INFO L124 PetriNetUnfolderBase]: 7234/10699 cut-off events. [2024-11-13 14:59:56,771 INFO L125 PetriNetUnfolderBase]: For 36289/36289 co-relation queries the response was YES. [2024-11-13 14:59:56,832 INFO L83 FinitePrefix]: Finished finitePrefix Result has 39030 conditions, 10699 events. 7234/10699 cut-off events. For 36289/36289 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 60682 event pairs, 2375 based on Foata normal form. 1/10700 useless extension candidates. Maximal degree in co-relation 39004. Up to 4941 conditions per place. [2024-11-13 14:59:56,874 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 109 selfloop transitions, 36 changer transitions 2/148 dead transitions. [2024-11-13 14:59:56,875 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 78 places, 148 transitions, 1282 flow [2024-11-13 14:59:56,876 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 14:59:56,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 14:59:56,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-11-13 14:59:56,879 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-11-13 14:59:56,879 INFO L175 Difference]: Start difference. First operand has 72 places, 72 transitions, 622 flow. Second operand 7 states and 125 transitions. [2024-11-13 14:59:56,879 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 78 places, 148 transitions, 1282 flow [2024-11-13 14:59:56,991 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 148 transitions, 1270 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-13 14:59:56,995 INFO L231 Difference]: Finished difference. Result has 81 places, 85 transitions, 838 flow [2024-11-13 14:59:56,995 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=619, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=72, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=23, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=838, PETRI_PLACES=81, PETRI_TRANSITIONS=85} [2024-11-13 14:59:56,996 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 46 predicate places. [2024-11-13 14:59:56,996 INFO L471 AbstractCegarLoop]: Abstraction has has 81 places, 85 transitions, 838 flow [2024-11-13 14:59:56,996 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:56,996 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 14:59:56,997 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 14:59:56,997 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-13 14:59:56,997 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 14:59:57,001 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 14:59:57,001 INFO L85 PathProgramCache]: Analyzing trace with hash -1110689841, now seen corresponding path program 7 times [2024-11-13 14:59:57,002 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 14:59:57,002 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [122514455] [2024-11-13 14:59:57,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 14:59:57,002 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 14:59:57,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 14:59:57,875 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 14:59:57,876 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 14:59:57,876 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [122514455] [2024-11-13 14:59:57,876 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [122514455] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 14:59:57,876 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 14:59:57,876 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 14:59:57,876 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [671606620] [2024-11-13 14:59:57,876 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 14:59:57,877 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 14:59:57,877 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 14:59:57,877 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 14:59:57,877 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 14:59:57,878 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 14:59:57,878 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 81 places, 85 transitions, 838 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 14:59:57,878 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 14:59:57,878 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 14:59:57,878 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:00,462 INFO L124 PetriNetUnfolderBase]: 7234/10687 cut-off events. [2024-11-13 15:00:00,462 INFO L125 PetriNetUnfolderBase]: For 47818/47818 co-relation queries the response was YES. [2024-11-13 15:00:00,500 INFO L83 FinitePrefix]: Finished finitePrefix Result has 41804 conditions, 10687 events. 7234/10687 cut-off events. For 47818/47818 co-relation queries the response was YES. Maximal size of possible extension queue 438. Compared 60434 event pairs, 2675 based on Foata normal form. 6/10693 useless extension candidates. Maximal degree in co-relation 41774. Up to 4545 conditions per place. [2024-11-13 15:00:00,538 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 102 selfloop transitions, 37 changer transitions 17/157 dead transitions. [2024-11-13 15:00:00,539 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 86 places, 157 transitions, 1583 flow [2024-11-13 15:00:00,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:00,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:00:00,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 109 transitions. [2024-11-13 15:00:00,540 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5046296296296297 [2024-11-13 15:00:00,540 INFO L175 Difference]: Start difference. First operand has 81 places, 85 transitions, 838 flow. Second operand 6 states and 109 transitions. [2024-11-13 15:00:00,540 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 86 places, 157 transitions, 1583 flow [2024-11-13 15:00:00,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 83 places, 157 transitions, 1479 flow, removed 16 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:00,768 INFO L231 Difference]: Finished difference. Result has 87 places, 90 transitions, 960 flow [2024-11-13 15:00:00,769 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=752, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=85, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=48, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=960, PETRI_PLACES=87, PETRI_TRANSITIONS=90} [2024-11-13 15:00:00,771 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 52 predicate places. [2024-11-13 15:00:00,771 INFO L471 AbstractCegarLoop]: Abstraction has has 87 places, 90 transitions, 960 flow [2024-11-13 15:00:00,771 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:00,772 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:00,772 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:00,772 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-13 15:00:00,773 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:00,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:00,774 INFO L85 PathProgramCache]: Analyzing trace with hash -656653297, now seen corresponding path program 8 times [2024-11-13 15:00:00,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:00,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [734743103] [2024-11-13 15:00:00,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:00,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:00,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:01,572 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:01,572 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:01,573 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [734743103] [2024-11-13 15:00:01,573 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [734743103] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:01,573 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:01,573 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:01,573 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431213725] [2024-11-13 15:00:01,573 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:01,574 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:01,574 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:01,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:01,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:01,576 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:01,577 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 87 places, 90 transitions, 960 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:01,577 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:01,577 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:01,577 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:03,898 INFO L124 PetriNetUnfolderBase]: 7173/10558 cut-off events. [2024-11-13 15:00:03,898 INFO L125 PetriNetUnfolderBase]: For 53788/53788 co-relation queries the response was YES. [2024-11-13 15:00:03,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 42464 conditions, 10558 events. 7173/10558 cut-off events. For 53788/53788 co-relation queries the response was YES. Maximal size of possible extension queue 439. Compared 59933 event pairs, 2650 based on Foata normal form. 1/10559 useless extension candidates. Maximal degree in co-relation 42430. Up to 4225 conditions per place. [2024-11-13 15:00:03,969 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 173 selfloop transitions, 22 changer transitions 3/199 dead transitions. [2024-11-13 15:00:03,969 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 92 places, 199 transitions, 2300 flow [2024-11-13 15:00:03,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:03,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:03,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 129 transitions. [2024-11-13 15:00:03,971 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5119047619047619 [2024-11-13 15:00:03,971 INFO L175 Difference]: Start difference. First operand has 87 places, 90 transitions, 960 flow. Second operand 7 states and 129 transitions. [2024-11-13 15:00:03,971 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 92 places, 199 transitions, 2300 flow [2024-11-13 15:00:04,147 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 89 places, 199 transitions, 2235 flow, removed 14 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:04,150 INFO L231 Difference]: Finished difference. Result has 93 places, 102 transitions, 1218 flow [2024-11-13 15:00:04,150 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=83, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=90, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1218, PETRI_PLACES=93, PETRI_TRANSITIONS=102} [2024-11-13 15:00:04,151 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 58 predicate places. [2024-11-13 15:00:04,151 INFO L471 AbstractCegarLoop]: Abstraction has has 93 places, 102 transitions, 1218 flow [2024-11-13 15:00:04,151 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:04,151 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:04,151 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:04,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-13 15:00:04,152 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:04,152 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:04,152 INFO L85 PathProgramCache]: Analyzing trace with hash -20204159, now seen corresponding path program 9 times [2024-11-13 15:00:04,152 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:04,152 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1038924558] [2024-11-13 15:00:04,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:04,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:04,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:04,927 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:04,928 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:04,928 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1038924558] [2024-11-13 15:00:04,928 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1038924558] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:04,928 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:04,928 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:04,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1637436397] [2024-11-13 15:00:04,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:04,929 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:04,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:04,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:04,929 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:04,929 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:04,930 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 93 places, 102 transitions, 1218 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:04,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:04,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:04,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:07,171 INFO L124 PetriNetUnfolderBase]: 7175/10566 cut-off events. [2024-11-13 15:00:07,171 INFO L125 PetriNetUnfolderBase]: For 59178/59178 co-relation queries the response was YES. [2024-11-13 15:00:07,224 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43203 conditions, 10566 events. 7175/10566 cut-off events. For 59178/59178 co-relation queries the response was YES. Maximal size of possible extension queue 435. Compared 59316 event pairs, 2451 based on Foata normal form. 1/10567 useless extension candidates. Maximal degree in co-relation 43167. Up to 4442 conditions per place. [2024-11-13 15:00:07,249 INFO L140 encePairwiseOnDemand]: 26/36 looper letters, 112 selfloop transitions, 51 changer transitions 3/167 dead transitions. [2024-11-13 15:00:07,249 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 99 places, 167 transitions, 1868 flow [2024-11-13 15:00:07,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:07,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:07,251 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 125 transitions. [2024-11-13 15:00:07,251 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.49603174603174605 [2024-11-13 15:00:07,251 INFO L175 Difference]: Start difference. First operand has 93 places, 102 transitions, 1218 flow. Second operand 7 states and 125 transitions. [2024-11-13 15:00:07,251 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 99 places, 167 transitions, 1868 flow [2024-11-13 15:00:07,426 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 97 places, 167 transitions, 1815 flow, removed 8 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:07,429 INFO L231 Difference]: Finished difference. Result has 100 places, 104 transitions, 1340 flow [2024-11-13 15:00:07,430 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1193, PETRI_DIFFERENCE_MINUEND_PLACES=91, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=102, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=51, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1340, PETRI_PLACES=100, PETRI_TRANSITIONS=104} [2024-11-13 15:00:07,430 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 65 predicate places. [2024-11-13 15:00:07,431 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 104 transitions, 1340 flow [2024-11-13 15:00:07,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:07,431 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:07,431 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:07,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-13 15:00:07,432 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:07,432 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:07,432 INFO L85 PathProgramCache]: Analyzing trace with hash -955683533, now seen corresponding path program 10 times [2024-11-13 15:00:07,432 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:07,433 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2013356981] [2024-11-13 15:00:07,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:07,433 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:07,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:08,186 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:08,186 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:08,187 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2013356981] [2024-11-13 15:00:08,187 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2013356981] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:08,187 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:08,187 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:08,187 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778832647] [2024-11-13 15:00:08,187 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:08,188 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:08,188 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:08,189 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:08,189 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:08,189 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:08,189 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 104 transitions, 1340 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:08,190 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:08,190 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:08,190 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:10,596 INFO L124 PetriNetUnfolderBase]: 7182/10582 cut-off events. [2024-11-13 15:00:10,596 INFO L125 PetriNetUnfolderBase]: For 66609/66609 co-relation queries the response was YES. [2024-11-13 15:00:10,666 INFO L83 FinitePrefix]: Finished finitePrefix Result has 44586 conditions, 10582 events. 7182/10582 cut-off events. For 66609/66609 co-relation queries the response was YES. Maximal size of possible extension queue 442. Compared 60317 event pairs, 2418 based on Foata normal form. 1/10583 useless extension candidates. Maximal degree in co-relation 44547. Up to 4227 conditions per place. [2024-11-13 15:00:10,701 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 155 selfloop transitions, 51 changer transitions 4/211 dead transitions. [2024-11-13 15:00:10,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 106 places, 211 transitions, 2671 flow [2024-11-13 15:00:10,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:10,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:10,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 138 transitions. [2024-11-13 15:00:10,703 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5476190476190477 [2024-11-13 15:00:10,703 INFO L175 Difference]: Start difference. First operand has 100 places, 104 transitions, 1340 flow. Second operand 7 states and 138 transitions. [2024-11-13 15:00:10,703 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 106 places, 211 transitions, 2671 flow [2024-11-13 15:00:10,966 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 102 places, 211 transitions, 2563 flow, removed 8 selfloop flow, removed 4 redundant places. [2024-11-13 15:00:10,969 INFO L231 Difference]: Finished difference. Result has 106 places, 123 transitions, 1758 flow [2024-11-13 15:00:10,969 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1267, PETRI_DIFFERENCE_MINUEND_PLACES=96, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=104, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=60, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1758, PETRI_PLACES=106, PETRI_TRANSITIONS=123} [2024-11-13 15:00:10,970 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 71 predicate places. [2024-11-13 15:00:10,970 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 123 transitions, 1758 flow [2024-11-13 15:00:10,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:10,970 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:10,970 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:10,970 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-13 15:00:10,971 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:10,971 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:10,972 INFO L85 PathProgramCache]: Analyzing trace with hash -2047249099, now seen corresponding path program 11 times [2024-11-13 15:00:10,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:10,972 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416322183] [2024-11-13 15:00:10,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:10,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:11,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:11,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:11,887 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:11,887 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416322183] [2024-11-13 15:00:11,887 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [416322183] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:11,888 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:11,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:11,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793280121] [2024-11-13 15:00:11,888 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:11,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:11,889 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:11,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:11,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:11,890 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:11,892 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 123 transitions, 1758 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:11,893 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:11,893 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:11,893 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:14,647 INFO L124 PetriNetUnfolderBase]: 7578/11173 cut-off events. [2024-11-13 15:00:14,647 INFO L125 PetriNetUnfolderBase]: For 72878/72878 co-relation queries the response was YES. [2024-11-13 15:00:14,725 INFO L83 FinitePrefix]: Finished finitePrefix Result has 47651 conditions, 11173 events. 7578/11173 cut-off events. For 72878/72878 co-relation queries the response was YES. Maximal size of possible extension queue 468. Compared 63456 event pairs, 2484 based on Foata normal form. 1/11174 useless extension candidates. Maximal degree in co-relation 47609. Up to 4489 conditions per place. [2024-11-13 15:00:14,756 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 117 selfloop transitions, 79 changer transitions 4/201 dead transitions. [2024-11-13 15:00:14,757 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 112 places, 201 transitions, 2684 flow [2024-11-13 15:00:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:14,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:14,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 130 transitions. [2024-11-13 15:00:14,758 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5158730158730159 [2024-11-13 15:00:14,758 INFO L175 Difference]: Start difference. First operand has 106 places, 123 transitions, 1758 flow. Second operand 7 states and 130 transitions. [2024-11-13 15:00:14,759 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 112 places, 201 transitions, 2684 flow [2024-11-13 15:00:15,106 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 110 places, 201 transitions, 2625 flow, removed 7 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:15,110 INFO L231 Difference]: Finished difference. Result has 114 places, 138 transitions, 2170 flow [2024-11-13 15:00:15,113 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=1709, PETRI_DIFFERENCE_MINUEND_PLACES=104, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=123, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=64, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=55, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2170, PETRI_PLACES=114, PETRI_TRANSITIONS=138} [2024-11-13 15:00:15,113 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 79 predicate places. [2024-11-13 15:00:15,114 INFO L471 AbstractCegarLoop]: Abstraction has has 114 places, 138 transitions, 2170 flow [2024-11-13 15:00:15,114 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:15,114 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:15,115 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:15,115 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-13 15:00:15,115 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:15,115 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:15,116 INFO L85 PathProgramCache]: Analyzing trace with hash -1807292631, now seen corresponding path program 12 times [2024-11-13 15:00:15,116 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:15,116 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321520672] [2024-11-13 15:00:15,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:15,116 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:15,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:15,779 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:15,779 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:15,779 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321520672] [2024-11-13 15:00:15,779 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321520672] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:15,779 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:15,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:15,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [181738961] [2024-11-13 15:00:15,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:15,780 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:15,780 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:15,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:15,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:15,781 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:15,782 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 114 places, 138 transitions, 2170 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:15,782 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:15,782 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:15,782 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:18,781 INFO L124 PetriNetUnfolderBase]: 7578/11171 cut-off events. [2024-11-13 15:00:18,781 INFO L125 PetriNetUnfolderBase]: For 84822/84822 co-relation queries the response was YES. [2024-11-13 15:00:18,861 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49446 conditions, 11171 events. 7578/11171 cut-off events. For 84822/84822 co-relation queries the response was YES. Maximal size of possible extension queue 476. Compared 64140 event pairs, 2539 based on Foata normal form. 1/11172 useless extension candidates. Maximal degree in co-relation 49400. Up to 4393 conditions per place. [2024-11-13 15:00:18,901 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 183 selfloop transitions, 41 changer transitions 3/228 dead transitions. [2024-11-13 15:00:18,901 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 228 transitions, 3313 flow [2024-11-13 15:00:18,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:18,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:18,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-13 15:00:18,903 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-11-13 15:00:18,903 INFO L175 Difference]: Start difference. First operand has 114 places, 138 transitions, 2170 flow. Second operand 7 states and 134 transitions. [2024-11-13 15:00:18,903 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 228 transitions, 3313 flow [2024-11-13 15:00:19,224 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 119 places, 228 transitions, 3227 flow, removed 24 selfloop flow, removed 1 redundant places. [2024-11-13 15:00:19,228 INFO L231 Difference]: Finished difference. Result has 121 places, 139 transitions, 2202 flow [2024-11-13 15:00:19,228 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2088, PETRI_DIFFERENCE_MINUEND_PLACES=113, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=138, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=40, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=97, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2202, PETRI_PLACES=121, PETRI_TRANSITIONS=139} [2024-11-13 15:00:19,229 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 86 predicate places. [2024-11-13 15:00:19,229 INFO L471 AbstractCegarLoop]: Abstraction has has 121 places, 139 transitions, 2202 flow [2024-11-13 15:00:19,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:19,229 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:19,230 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:19,230 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-13 15:00:19,230 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:19,231 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:19,231 INFO L85 PathProgramCache]: Analyzing trace with hash -1210896455, now seen corresponding path program 13 times [2024-11-13 15:00:19,231 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:19,231 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [795429351] [2024-11-13 15:00:19,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:19,232 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:19,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:20,075 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:20,075 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:20,075 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [795429351] [2024-11-13 15:00:20,075 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [795429351] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:20,075 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:20,075 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:20,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372942868] [2024-11-13 15:00:20,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:20,076 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:20,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:20,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:20,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:20,077 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:20,077 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 121 places, 139 transitions, 2202 flow. Second operand has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:20,077 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:20,077 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:20,077 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:22,904 INFO L124 PetriNetUnfolderBase]: 7584/11186 cut-off events. [2024-11-13 15:00:22,904 INFO L125 PetriNetUnfolderBase]: For 86023/86023 co-relation queries the response was YES. [2024-11-13 15:00:23,013 INFO L83 FinitePrefix]: Finished finitePrefix Result has 49476 conditions, 11186 events. 7584/11186 cut-off events. For 86023/86023 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 63788 event pairs, 2416 based on Foata normal form. 1/11187 useless extension candidates. Maximal degree in co-relation 49428. Up to 4796 conditions per place. [2024-11-13 15:00:23,047 INFO L140 encePairwiseOnDemand]: 27/36 looper letters, 161 selfloop transitions, 65 changer transitions 4/231 dead transitions. [2024-11-13 15:00:23,048 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 127 places, 231 transitions, 3415 flow [2024-11-13 15:00:23,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:23,048 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:23,049 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 136 transitions. [2024-11-13 15:00:23,049 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5396825396825397 [2024-11-13 15:00:23,050 INFO L175 Difference]: Start difference. First operand has 121 places, 139 transitions, 2202 flow. Second operand 7 states and 136 transitions. [2024-11-13 15:00:23,050 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 127 places, 231 transitions, 3415 flow [2024-11-13 15:00:23,406 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 122 places, 231 transitions, 3328 flow, removed 10 selfloop flow, removed 5 redundant places. [2024-11-13 15:00:23,412 INFO L231 Difference]: Finished difference. Result has 127 places, 159 transitions, 2705 flow [2024-11-13 15:00:23,412 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2129, PETRI_DIFFERENCE_MINUEND_PLACES=116, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=49, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=2705, PETRI_PLACES=127, PETRI_TRANSITIONS=159} [2024-11-13 15:00:23,413 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 92 predicate places. [2024-11-13 15:00:23,413 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 159 transitions, 2705 flow [2024-11-13 15:00:23,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:23,414 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:23,414 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:23,414 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-13 15:00:23,414 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:23,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:23,415 INFO L85 PathProgramCache]: Analyzing trace with hash 2020820979, now seen corresponding path program 14 times [2024-11-13 15:00:23,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:23,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1650823750] [2024-11-13 15:00:23,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:23,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:23,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:23,950 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:23,951 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:23,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1650823750] [2024-11-13 15:00:23,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1650823750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:23,952 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:23,952 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:23,952 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1037648082] [2024-11-13 15:00:23,953 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:23,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:23,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:23,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:23,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:23,954 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:23,954 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 159 transitions, 2705 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:23,955 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:23,955 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:23,955 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:26,050 INFO L124 PetriNetUnfolderBase]: 7584/11174 cut-off events. [2024-11-13 15:00:26,050 INFO L125 PetriNetUnfolderBase]: For 96245/96245 co-relation queries the response was YES. [2024-11-13 15:00:26,142 INFO L83 FinitePrefix]: Finished finitePrefix Result has 51244 conditions, 11174 events. 7584/11174 cut-off events. For 96245/96245 co-relation queries the response was YES. Maximal size of possible extension queue 469. Compared 63333 event pairs, 2572 based on Foata normal form. 6/11180 useless extension candidates. Maximal degree in co-relation 51193. Up to 4489 conditions per place. [2024-11-13 15:00:26,173 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 105 selfloop transitions, 89 changer transitions 21/216 dead transitions. [2024-11-13 15:00:26,174 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 216 transitions, 3459 flow [2024-11-13 15:00:26,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:26,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:00:26,175 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 110 transitions. [2024-11-13 15:00:26,175 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5092592592592593 [2024-11-13 15:00:26,175 INFO L175 Difference]: Start difference. First operand has 127 places, 159 transitions, 2705 flow. Second operand 6 states and 110 transitions. [2024-11-13 15:00:26,175 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 216 transitions, 3459 flow [2024-11-13 15:00:26,556 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 132 places, 216 transitions, 3387 flow, removed 36 selfloop flow, removed 0 redundant places. [2024-11-13 15:00:26,563 INFO L231 Difference]: Finished difference. Result has 133 places, 153 transitions, 2726 flow [2024-11-13 15:00:26,564 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2645, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=159, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=89, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=70, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2726, PETRI_PLACES=133, PETRI_TRANSITIONS=153} [2024-11-13 15:00:26,564 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-11-13 15:00:26,564 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 153 transitions, 2726 flow [2024-11-13 15:00:26,565 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:26,565 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:26,565 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:26,565 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-13 15:00:26,565 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:26,566 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:26,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1395320705, now seen corresponding path program 15 times [2024-11-13 15:00:26,566 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:26,566 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [528662491] [2024-11-13 15:00:26,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:26,567 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:26,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:27,019 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:27,019 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:27,019 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [528662491] [2024-11-13 15:00:27,019 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [528662491] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:27,020 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:27,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:27,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [132994356] [2024-11-13 15:00:27,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:27,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:27,021 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:27,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:27,021 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:27,022 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:27,022 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 153 transitions, 2726 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:27,022 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:27,022 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:27,022 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:29,378 INFO L124 PetriNetUnfolderBase]: 7685/11339 cut-off events. [2024-11-13 15:00:29,378 INFO L125 PetriNetUnfolderBase]: For 108206/108206 co-relation queries the response was YES. [2024-11-13 15:00:29,535 INFO L83 FinitePrefix]: Finished finitePrefix Result has 52835 conditions, 11339 events. 7685/11339 cut-off events. For 108206/108206 co-relation queries the response was YES. Maximal size of possible extension queue 486. Compared 63821 event pairs, 3117 based on Foata normal form. 5/11344 useless extension candidates. Maximal degree in co-relation 52782. Up to 4924 conditions per place. [2024-11-13 15:00:29,585 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 160 selfloop transitions, 68 changer transitions 17/246 dead transitions. [2024-11-13 15:00:29,585 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 137 places, 246 transitions, 4209 flow [2024-11-13 15:00:29,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:29,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:00:29,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 105 transitions. [2024-11-13 15:00:29,586 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.4861111111111111 [2024-11-13 15:00:29,587 INFO L175 Difference]: Start difference. First operand has 133 places, 153 transitions, 2726 flow. Second operand 6 states and 105 transitions. [2024-11-13 15:00:29,587 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 137 places, 246 transitions, 4209 flow [2024-11-13 15:00:29,971 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 124 places, 246 transitions, 3874 flow, removed 10 selfloop flow, removed 13 redundant places. [2024-11-13 15:00:29,974 INFO L231 Difference]: Finished difference. Result has 128 places, 164 transitions, 2938 flow [2024-11-13 15:00:29,974 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2429, PETRI_DIFFERENCE_MINUEND_PLACES=119, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=153, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=57, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=85, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=2938, PETRI_PLACES=128, PETRI_TRANSITIONS=164} [2024-11-13 15:00:29,975 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 93 predicate places. [2024-11-13 15:00:29,975 INFO L471 AbstractCegarLoop]: Abstraction has has 128 places, 164 transitions, 2938 flow [2024-11-13 15:00:29,975 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:29,975 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:29,975 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:29,975 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-13 15:00:29,976 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:29,976 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:29,976 INFO L85 PathProgramCache]: Analyzing trace with hash 399765699, now seen corresponding path program 16 times [2024-11-13 15:00:29,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:29,976 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [525584597] [2024-11-13 15:00:29,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:29,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:30,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:30,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [525584597] [2024-11-13 15:00:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [525584597] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:30,447 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:30,447 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-13 15:00:30,447 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768830453] [2024-11-13 15:00:30,447 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:30,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-13 15:00:30,448 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:30,448 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-13 15:00:30,448 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-13 15:00:30,449 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:30,449 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 128 places, 164 transitions, 2938 flow. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:30,449 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:30,449 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:30,449 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:33,198 INFO L124 PetriNetUnfolderBase]: 7640/11232 cut-off events. [2024-11-13 15:00:33,198 INFO L125 PetriNetUnfolderBase]: For 108001/108001 co-relation queries the response was YES. [2024-11-13 15:00:33,311 INFO L83 FinitePrefix]: Finished finitePrefix Result has 53314 conditions, 11232 events. 7640/11232 cut-off events. For 108001/108001 co-relation queries the response was YES. Maximal size of possible extension queue 483. Compared 62676 event pairs, 2844 based on Foata normal form. 6/11238 useless extension candidates. Maximal degree in co-relation 53263. Up to 4924 conditions per place. [2024-11-13 15:00:33,351 INFO L140 encePairwiseOnDemand]: 29/36 looper letters, 136 selfloop transitions, 79 changer transitions 16/232 dead transitions. [2024-11-13 15:00:33,351 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 132 places, 232 transitions, 3926 flow [2024-11-13 15:00:33,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-13 15:00:33,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-13 15:00:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-11-13 15:00:33,353 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5 [2024-11-13 15:00:33,353 INFO L175 Difference]: Start difference. First operand has 128 places, 164 transitions, 2938 flow. Second operand 6 states and 108 transitions. [2024-11-13 15:00:33,353 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 132 places, 232 transitions, 3926 flow [2024-11-13 15:00:33,823 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 130 places, 232 transitions, 3864 flow, removed 5 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:33,828 INFO L231 Difference]: Finished difference. Result has 133 places, 170 transitions, 3223 flow [2024-11-13 15:00:33,828 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=2880, PETRI_DIFFERENCE_MINUEND_PLACES=125, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=164, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=73, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=90, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=3223, PETRI_PLACES=133, PETRI_TRANSITIONS=170} [2024-11-13 15:00:33,829 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 98 predicate places. [2024-11-13 15:00:33,829 INFO L471 AbstractCegarLoop]: Abstraction has has 133 places, 170 transitions, 3223 flow [2024-11-13 15:00:33,829 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:33,829 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:33,829 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:33,829 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-13 15:00:33,829 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:33,830 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:33,830 INFO L85 PathProgramCache]: Analyzing trace with hash -1125114060, now seen corresponding path program 1 times [2024-11-13 15:00:33,830 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:33,830 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [557904579] [2024-11-13 15:00:33,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:33,830 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:33,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:34,364 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:34,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:34,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [557904579] [2024-11-13 15:00:34,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [557904579] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:34,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:34,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:34,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1162916633] [2024-11-13 15:00:34,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:34,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:34,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:34,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:34,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:34,369 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:34,369 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 133 places, 170 transitions, 3223 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:34,369 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:34,369 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:34,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:36,888 INFO L124 PetriNetUnfolderBase]: 8523/12475 cut-off events. [2024-11-13 15:00:36,889 INFO L125 PetriNetUnfolderBase]: For 123847/123847 co-relation queries the response was YES. [2024-11-13 15:00:36,988 INFO L83 FinitePrefix]: Finished finitePrefix Result has 59145 conditions, 12475 events. 8523/12475 cut-off events. For 123847/123847 co-relation queries the response was YES. Maximal size of possible extension queue 524. Compared 71235 event pairs, 1921 based on Foata normal form. 13/12488 useless extension candidates. Maximal degree in co-relation 59092. Up to 7136 conditions per place. [2024-11-13 15:00:37,021 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 191 selfloop transitions, 61 changer transitions 1/254 dead transitions. [2024-11-13 15:00:37,021 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 254 transitions, 4279 flow [2024-11-13 15:00:37,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:37,022 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:37,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-11-13 15:00:37,023 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5317460317460317 [2024-11-13 15:00:37,023 INFO L175 Difference]: Start difference. First operand has 133 places, 170 transitions, 3223 flow. Second operand 7 states and 134 transitions. [2024-11-13 15:00:37,023 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 254 transitions, 4279 flow [2024-11-13 15:00:37,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 135 places, 254 transitions, 4090 flow, removed 23 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:37,577 INFO L231 Difference]: Finished difference. Result has 139 places, 175 transitions, 3317 flow [2024-11-13 15:00:37,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3064, PETRI_DIFFERENCE_MINUEND_PLACES=129, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=170, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=56, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=109, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3317, PETRI_PLACES=139, PETRI_TRANSITIONS=175} [2024-11-13 15:00:37,577 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 104 predicate places. [2024-11-13 15:00:37,578 INFO L471 AbstractCegarLoop]: Abstraction has has 139 places, 175 transitions, 3317 flow [2024-11-13 15:00:37,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:37,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:37,578 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:37,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-13 15:00:37,579 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:37,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:37,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1808323168, now seen corresponding path program 1 times [2024-11-13 15:00:37,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:37,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1010269633] [2024-11-13 15:00:37,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:37,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:37,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:38,104 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:38,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:38,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1010269633] [2024-11-13 15:00:38,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1010269633] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:38,105 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:38,105 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:00:38,105 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1515194875] [2024-11-13 15:00:38,105 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:38,105 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:38,106 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:38,106 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:38,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:38,107 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:38,107 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 139 places, 175 transitions, 3317 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:38,107 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:38,107 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:38,108 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:41,626 INFO L124 PetriNetUnfolderBase]: 11828/17272 cut-off events. [2024-11-13 15:00:41,626 INFO L125 PetriNetUnfolderBase]: For 180388/180388 co-relation queries the response was YES. [2024-11-13 15:00:41,795 INFO L83 FinitePrefix]: Finished finitePrefix Result has 81294 conditions, 17272 events. 11828/17272 cut-off events. For 180388/180388 co-relation queries the response was YES. Maximal size of possible extension queue 739. Compared 103900 event pairs, 3141 based on Foata normal form. 8/17280 useless extension candidates. Maximal degree in co-relation 81238. Up to 5986 conditions per place. [2024-11-13 15:00:41,855 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 230 selfloop transitions, 72 changer transitions 1/304 dead transitions. [2024-11-13 15:00:41,855 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 145 places, 304 transitions, 5403 flow [2024-11-13 15:00:41,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:41,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:41,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 142 transitions. [2024-11-13 15:00:41,857 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5634920634920635 [2024-11-13 15:00:41,857 INFO L175 Difference]: Start difference. First operand has 139 places, 175 transitions, 3317 flow. Second operand 7 states and 142 transitions. [2024-11-13 15:00:41,857 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 145 places, 304 transitions, 5403 flow [2024-11-13 15:00:42,715 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 143 places, 304 transitions, 5262 flow, removed 23 selfloop flow, removed 2 redundant places. [2024-11-13 15:00:42,720 INFO L231 Difference]: Finished difference. Result has 148 places, 195 transitions, 3812 flow [2024-11-13 15:00:42,721 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3228, PETRI_DIFFERENCE_MINUEND_PLACES=137, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=175, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=112, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=3812, PETRI_PLACES=148, PETRI_TRANSITIONS=195} [2024-11-13 15:00:42,721 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 113 predicate places. [2024-11-13 15:00:42,721 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 195 transitions, 3812 flow [2024-11-13 15:00:42,722 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:42,722 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:42,722 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:42,722 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-13 15:00:42,722 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:42,723 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:42,723 INFO L85 PathProgramCache]: Analyzing trace with hash -170998980, now seen corresponding path program 2 times [2024-11-13 15:00:42,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:42,723 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [812335347] [2024-11-13 15:00:42,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:42,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:42,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:43,237 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:43,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:43,238 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [812335347] [2024-11-13 15:00:43,238 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [812335347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:43,238 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:43,238 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:00:43,238 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356585616] [2024-11-13 15:00:43,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:43,239 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:00:43,239 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:43,240 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:00:43,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:00:43,240 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:43,240 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 195 transitions, 3812 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:43,240 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:43,241 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:43,241 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:48,317 INFO L124 PetriNetUnfolderBase]: 13917/20369 cut-off events. [2024-11-13 15:00:48,317 INFO L125 PetriNetUnfolderBase]: For 207473/207473 co-relation queries the response was YES. [2024-11-13 15:00:48,492 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96583 conditions, 20369 events. 13917/20369 cut-off events. For 207473/207473 co-relation queries the response was YES. Maximal size of possible extension queue 871. Compared 125999 event pairs, 4102 based on Foata normal form. 13/20382 useless extension candidates. Maximal degree in co-relation 96522. Up to 7960 conditions per place. [2024-11-13 15:00:48,556 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 235 selfloop transitions, 64 changer transitions 1/301 dead transitions. [2024-11-13 15:00:48,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 154 places, 301 transitions, 5232 flow [2024-11-13 15:00:48,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:48,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:48,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 146 transitions. [2024-11-13 15:00:48,558 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5793650793650794 [2024-11-13 15:00:48,558 INFO L175 Difference]: Start difference. First operand has 148 places, 195 transitions, 3812 flow. Second operand 7 states and 146 transitions. [2024-11-13 15:00:48,559 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 154 places, 301 transitions, 5232 flow [2024-11-13 15:00:49,708 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 153 places, 301 transitions, 5193 flow, removed 7 selfloop flow, removed 1 redundant places. [2024-11-13 15:00:49,713 INFO L231 Difference]: Finished difference. Result has 156 places, 201 transitions, 4045 flow [2024-11-13 15:00:49,713 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3776, PETRI_DIFFERENCE_MINUEND_PLACES=147, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=195, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=58, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=134, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4045, PETRI_PLACES=156, PETRI_TRANSITIONS=201} [2024-11-13 15:00:49,714 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 121 predicate places. [2024-11-13 15:00:49,714 INFO L471 AbstractCegarLoop]: Abstraction has has 156 places, 201 transitions, 4045 flow [2024-11-13 15:00:49,714 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:49,714 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:49,714 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:49,714 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-13 15:00:49,714 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:49,715 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:49,715 INFO L85 PathProgramCache]: Analyzing trace with hash -323166806, now seen corresponding path program 2 times [2024-11-13 15:00:49,715 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:49,715 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1295971361] [2024-11-13 15:00:49,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:49,715 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:49,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:50,146 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:50,147 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:50,147 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1295971361] [2024-11-13 15:00:50,147 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1295971361] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:50,147 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:50,147 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:00:50,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477016639] [2024-11-13 15:00:50,148 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:50,148 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:50,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:50,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:50,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:50,149 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:50,150 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 156 places, 201 transitions, 4045 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:50,150 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:50,150 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:50,150 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:00:56,430 INFO L124 PetriNetUnfolderBase]: 15945/23298 cut-off events. [2024-11-13 15:00:56,430 INFO L125 PetriNetUnfolderBase]: For 257569/257569 co-relation queries the response was YES. [2024-11-13 15:00:56,657 INFO L83 FinitePrefix]: Finished finitePrefix Result has 111459 conditions, 23298 events. 15945/23298 cut-off events. For 257569/257569 co-relation queries the response was YES. Maximal size of possible extension queue 965. Compared 144318 event pairs, 3233 based on Foata normal form. 8/23306 useless extension candidates. Maximal degree in co-relation 111395. Up to 9949 conditions per place. [2024-11-13 15:00:56,920 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 238 selfloop transitions, 76 changer transitions 1/316 dead transitions. [2024-11-13 15:00:56,920 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 162 places, 316 transitions, 5905 flow [2024-11-13 15:00:56,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:00:56,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:00:56,921 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 133 transitions. [2024-11-13 15:00:56,921 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5277777777777778 [2024-11-13 15:00:56,921 INFO L175 Difference]: Start difference. First operand has 156 places, 201 transitions, 4045 flow. Second operand 7 states and 133 transitions. [2024-11-13 15:00:56,922 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 162 places, 316 transitions, 5905 flow [2024-11-13 15:00:58,405 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 159 places, 316 transitions, 5643 flow, removed 38 selfloop flow, removed 3 redundant places. [2024-11-13 15:00:58,410 INFO L231 Difference]: Finished difference. Result has 163 places, 217 transitions, 4433 flow [2024-11-13 15:00:58,411 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=3889, PETRI_DIFFERENCE_MINUEND_PLACES=153, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=201, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=60, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=126, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4433, PETRI_PLACES=163, PETRI_TRANSITIONS=217} [2024-11-13 15:00:58,411 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 128 predicate places. [2024-11-13 15:00:58,411 INFO L471 AbstractCegarLoop]: Abstraction has has 163 places, 217 transitions, 4433 flow [2024-11-13 15:00:58,411 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:58,411 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:00:58,411 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:00:58,412 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-13 15:00:58,412 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:00:58,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:00:58,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1778874856, now seen corresponding path program 3 times [2024-11-13 15:00:58,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:00:58,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [49372177] [2024-11-13 15:00:58,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:00:58,413 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:00:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:00:58,927 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:00:58,927 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:00:58,927 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [49372177] [2024-11-13 15:00:58,927 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [49372177] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:00:58,927 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:00:58,927 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:00:58,927 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1064791547] [2024-11-13 15:00:58,927 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:00:58,928 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:00:58,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:00:58,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:00:58,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:00:58,928 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:00:58,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 163 places, 217 transitions, 4433 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:00:58,929 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:00:58,929 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:00:58,929 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:06,419 INFO L124 PetriNetUnfolderBase]: 16377/23936 cut-off events. [2024-11-13 15:01:06,419 INFO L125 PetriNetUnfolderBase]: For 273713/273713 co-relation queries the response was YES. [2024-11-13 15:01:06,675 INFO L83 FinitePrefix]: Finished finitePrefix Result has 114272 conditions, 23936 events. 16377/23936 cut-off events. For 273713/273713 co-relation queries the response was YES. Maximal size of possible extension queue 1024. Compared 150641 event pairs, 4805 based on Foata normal form. 8/23944 useless extension candidates. Maximal degree in co-relation 114204. Up to 9462 conditions per place. [2024-11-13 15:01:06,759 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 232 selfloop transitions, 84 changer transitions 1/318 dead transitions. [2024-11-13 15:01:06,760 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 169 places, 318 transitions, 5843 flow [2024-11-13 15:01:06,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:01:06,760 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:01:06,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-13 15:01:06,761 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-13 15:01:06,761 INFO L175 Difference]: Start difference. First operand has 163 places, 217 transitions, 4433 flow. Second operand 7 states and 147 transitions. [2024-11-13 15:01:06,762 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 169 places, 318 transitions, 5843 flow [2024-11-13 15:01:08,572 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 318 transitions, 5715 flow, removed 18 selfloop flow, removed 2 redundant places. [2024-11-13 15:01:08,577 INFO L231 Difference]: Finished difference. Result has 170 places, 224 transitions, 4670 flow [2024-11-13 15:01:08,577 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4319, PETRI_DIFFERENCE_MINUEND_PLACES=161, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=217, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4670, PETRI_PLACES=170, PETRI_TRANSITIONS=224} [2024-11-13 15:01:08,578 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2024-11-13 15:01:08,578 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 224 transitions, 4670 flow [2024-11-13 15:01:08,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:08,578 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:08,578 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:01:08,578 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-13 15:01:08,579 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:01:08,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:08,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1757832674, now seen corresponding path program 3 times [2024-11-13 15:01:08,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:08,579 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321655961] [2024-11-13 15:01:08,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:08,579 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:08,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:09,207 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:01:09,208 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:09,208 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321655961] [2024-11-13 15:01:09,208 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321655961] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:09,208 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:09,208 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:01:09,208 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [218289685] [2024-11-13 15:01:09,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:09,209 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:01:09,209 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:09,209 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:01:09,209 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=21, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:01:09,210 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:01:09,210 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 224 transitions, 4670 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:09,210 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:09,210 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:01:09,210 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:17,006 INFO L124 PetriNetUnfolderBase]: 19269/28141 cut-off events. [2024-11-13 15:01:17,006 INFO L125 PetriNetUnfolderBase]: For 338568/338568 co-relation queries the response was YES. [2024-11-13 15:01:17,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 136705 conditions, 28141 events. 19269/28141 cut-off events. For 338568/338568 co-relation queries the response was YES. Maximal size of possible extension queue 1135. Compared 178299 event pairs, 2849 based on Foata normal form. 8/28149 useless extension candidates. Maximal degree in co-relation 136634. Up to 13368 conditions per place. [2024-11-13 15:01:17,431 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 297 selfloop transitions, 80 changer transitions 1/379 dead transitions. [2024-11-13 15:01:17,431 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 176 places, 379 transitions, 7785 flow [2024-11-13 15:01:17,432 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:01:17,432 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:01:17,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 132 transitions. [2024-11-13 15:01:17,433 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5238095238095238 [2024-11-13 15:01:17,433 INFO L175 Difference]: Start difference. First operand has 170 places, 224 transitions, 4670 flow. Second operand 7 states and 132 transitions. [2024-11-13 15:01:17,433 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 176 places, 379 transitions, 7785 flow [2024-11-13 15:01:20,119 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 173 places, 379 transitions, 7553 flow, removed 15 selfloop flow, removed 3 redundant places. [2024-11-13 15:01:20,125 INFO L231 Difference]: Finished difference. Result has 178 places, 265 transitions, 5659 flow [2024-11-13 15:01:20,126 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=4523, PETRI_DIFFERENCE_MINUEND_PLACES=167, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=224, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=44, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=159, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5659, PETRI_PLACES=178, PETRI_TRANSITIONS=265} [2024-11-13 15:01:20,126 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 143 predicate places. [2024-11-13 15:01:20,126 INFO L471 AbstractCegarLoop]: Abstraction has has 178 places, 265 transitions, 5659 flow [2024-11-13 15:01:20,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:20,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:20,127 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:01:20,127 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-13 15:01:20,127 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:01:20,127 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:20,127 INFO L85 PathProgramCache]: Analyzing trace with hash 311665758, now seen corresponding path program 4 times [2024-11-13 15:01:20,127 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:20,127 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1386296500] [2024-11-13 15:01:20,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:20,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:20,647 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:01:20,648 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:20,648 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1386296500] [2024-11-13 15:01:20,648 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1386296500] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:20,648 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:20,648 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:01:20,649 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831397310] [2024-11-13 15:01:20,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:20,649 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:01:20,649 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:20,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:01:20,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:01:20,650 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:01:20,650 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 178 places, 265 transitions, 5659 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:20,651 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:20,651 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:01:20,651 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:29,501 INFO L124 PetriNetUnfolderBase]: 19248/28104 cut-off events. [2024-11-13 15:01:29,502 INFO L125 PetriNetUnfolderBase]: For 363615/363615 co-relation queries the response was YES. [2024-11-13 15:01:29,858 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139879 conditions, 28104 events. 19248/28104 cut-off events. For 363615/363615 co-relation queries the response was YES. Maximal size of possible extension queue 1157. Compared 179241 event pairs, 5737 based on Foata normal form. 13/28117 useless extension candidates. Maximal degree in co-relation 139803. Up to 10964 conditions per place. [2024-11-13 15:01:29,950 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 239 selfloop transitions, 118 changer transitions 1/359 dead transitions. [2024-11-13 15:01:29,950 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 359 transitions, 7047 flow [2024-11-13 15:01:29,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:01:29,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:01:29,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 147 transitions. [2024-11-13 15:01:29,952 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5833333333333334 [2024-11-13 15:01:29,952 INFO L175 Difference]: Start difference. First operand has 178 places, 265 transitions, 5659 flow. Second operand 7 states and 147 transitions. [2024-11-13 15:01:29,952 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 359 transitions, 7047 flow [2024-11-13 15:01:32,598 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 184 places, 359 transitions, 7001 flow, removed 23 selfloop flow, removed 0 redundant places. [2024-11-13 15:01:32,604 INFO L231 Difference]: Finished difference. Result has 186 places, 267 transitions, 5907 flow [2024-11-13 15:01:32,604 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5619, PETRI_DIFFERENCE_MINUEND_PLACES=178, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=265, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=116, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=148, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=5907, PETRI_PLACES=186, PETRI_TRANSITIONS=267} [2024-11-13 15:01:32,605 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 151 predicate places. [2024-11-13 15:01:32,605 INFO L471 AbstractCegarLoop]: Abstraction has has 186 places, 267 transitions, 5907 flow [2024-11-13 15:01:32,605 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:32,605 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:32,606 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:01:32,606 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-13 15:01:32,606 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:01:32,606 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:32,606 INFO L85 PathProgramCache]: Analyzing trace with hash -78854548, now seen corresponding path program 4 times [2024-11-13 15:01:32,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:32,606 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438367112] [2024-11-13 15:01:32,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:32,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:32,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:33,064 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:01:33,065 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:33,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438367112] [2024-11-13 15:01:33,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438367112] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:33,065 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:33,065 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-13 15:01:33,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238784731] [2024-11-13 15:01:33,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:33,066 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-13 15:01:33,066 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:33,066 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-13 15:01:33,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-13 15:01:33,067 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:01:33,067 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 186 places, 267 transitions, 5907 flow. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:33,067 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:33,067 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:01:33,067 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-13 15:01:42,805 INFO L124 PetriNetUnfolderBase]: 19760/28903 cut-off events. [2024-11-13 15:01:42,805 INFO L125 PetriNetUnfolderBase]: For 397669/397669 co-relation queries the response was YES. [2024-11-13 15:01:43,191 INFO L83 FinitePrefix]: Finished finitePrefix Result has 146325 conditions, 28903 events. 19760/28903 cut-off events. For 397669/397669 co-relation queries the response was YES. Maximal size of possible extension queue 1200. Compared 185387 event pairs, 6976 based on Foata normal form. 8/28911 useless extension candidates. Maximal degree in co-relation 146246. Up to 16304 conditions per place. [2024-11-13 15:01:43,300 INFO L140 encePairwiseOnDemand]: 28/36 looper letters, 217 selfloop transitions, 137 changer transitions 1/356 dead transitions. [2024-11-13 15:01:43,301 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 192 places, 356 transitions, 7310 flow [2024-11-13 15:01:43,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-13 15:01:43,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-13 15:01:43,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 144 transitions. [2024-11-13 15:01:43,303 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.5714285714285714 [2024-11-13 15:01:43,303 INFO L175 Difference]: Start difference. First operand has 186 places, 267 transitions, 5907 flow. Second operand 7 states and 144 transitions. [2024-11-13 15:01:43,303 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 192 places, 356 transitions, 7310 flow [2024-11-13 15:01:46,280 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 189 places, 356 transitions, 7123 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-11-13 15:01:46,287 INFO L231 Difference]: Finished difference. Result has 191 places, 274 transitions, 6197 flow [2024-11-13 15:01:46,288 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=36, PETRI_DIFFERENCE_MINUEND_FLOW=5727, PETRI_DIFFERENCE_MINUEND_PLACES=183, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=135, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=6197, PETRI_PLACES=191, PETRI_TRANSITIONS=274} [2024-11-13 15:01:46,288 INFO L277 CegarLoopForPetriNet]: 35 programPoint places, 156 predicate places. [2024-11-13 15:01:46,288 INFO L471 AbstractCegarLoop]: Abstraction has has 191 places, 274 transitions, 6197 flow [2024-11-13 15:01:46,289 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 7 states have internal predecessors, (55), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:46,289 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-11-13 15:01:46,289 INFO L204 CegarLoopForPetriNet]: trace histogram [3, 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] [2024-11-13 15:01:46,289 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-13 15:01:46,289 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-13 15:01:46,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-13 15:01:46,290 INFO L85 PathProgramCache]: Analyzing trace with hash -2118779154, now seen corresponding path program 5 times [2024-11-13 15:01:46,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-13 15:01:46,290 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1622433685] [2024-11-13 15:01:46,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-13 15:01:46,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-13 15:01:46,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-13 15:01:47,180 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-13 15:01:47,181 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-13 15:01:47,181 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1622433685] [2024-11-13 15:01:47,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1622433685] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-13 15:01:47,181 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-13 15:01:47,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-13 15:01:47,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [998763357] [2024-11-13 15:01:47,182 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-13 15:01:47,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-13 15:01:47,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-13 15:01:47,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-13 15:01:47,183 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-13 15:01:47,184 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 36 [2024-11-13 15:01:47,184 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 191 places, 274 transitions, 6197 flow. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-13 15:01:47,184 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-13 15:01:47,184 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 36 [2024-11-13 15:01:47,184 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand