./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU --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 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-10-31 22:06:18,047 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-31 22:06:18,160 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-10-31 22:06:18,170 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-31 22:06:18,170 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-31 22:06:18,198 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-31 22:06:18,199 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-31 22:06:18,199 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-31 22:06:18,200 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-31 22:06:18,201 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-31 22:06:18,204 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-31 22:06:18,205 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-31 22:06:18,206 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-31 22:06:18,206 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-31 22:06:18,207 INFO L153 SettingsManager]: * Use SBE=true [2024-10-31 22:06:18,207 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-31 22:06:18,208 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-10-31 22:06:18,209 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-31 22:06:18,209 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-31 22:06:18,210 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-31 22:06:18,210 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-31 22:06:18,214 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-10-31 22:06:18,215 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-31 22:06:18,215 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-10-31 22:06:18,216 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-31 22:06:18,216 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-31 22:06:18,216 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-10-31 22:06:18,217 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-31 22:06:18,217 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-31 22:06:18,217 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-31 22:06:18,218 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-31 22:06:18,218 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-31 22:06:18,218 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:18,219 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-31 22:06:18,219 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-31 22:06:18,220 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-10-31 22:06:18,220 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-31 22:06:18,220 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-31 22:06:18,221 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-31 22:06:18,221 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-31 22:06:18,221 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-31 22:06:18,222 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-31 22:06:18,222 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1ac00c9540bbc99a446c9cb6c02e180c3a0ad4fef3c182d14bafdc7ea871c54c [2024-10-31 22:06:18,544 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-31 22:06:18,579 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-31 22:06:18,582 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-31 22:06:18,584 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-31 22:06:18,584 INFO L274 PluginConnector]: CDTParser initialized [2024-10-31 22:06:18,586 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/../../sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c Unable to find full path for "g++" [2024-10-31 22:06:20,938 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-31 22:06:21,167 INFO L384 CDTParser]: Found 1 translation units. [2024-10-31 22:06:21,167 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c [2024-10-31 22:06:21,177 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/data/bbc218157/b723ef920f214593bb664972dba3e5be/FLAG55fb0ca85 [2024-10-31 22:06:21,199 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/data/bbc218157/b723ef920f214593bb664972dba3e5be [2024-10-31 22:06:21,202 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-31 22:06:21,205 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-31 22:06:21,206 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:21,207 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-31 22:06:21,213 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-31 22:06:21,217 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,218 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3c9e7ba7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21, skipping insertion in model container [2024-10-31 22:06:21,219 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,255 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-31 22:06:21,547 WARN L251 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_732e8ae5-a7d1-4559-910e-b1b5e837a77e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2024-10-31 22:06:21,554 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:21,572 INFO L200 MainTranslator]: Completed pre-run [2024-10-31 22:06:21,610 WARN L251 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_732e8ae5-a7d1-4559-910e-b1b5e837a77e/sv-benchmarks/c/weaver/parallel-misc-3-extended.wvr.c[2895,2908] [2024-10-31 22:06:21,614 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-31 22:06:21,639 INFO L204 MainTranslator]: Completed translation [2024-10-31 22:06:21,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21 WrapperNode [2024-10-31 22:06:21,639 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-31 22:06:21,641 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:21,642 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-31 22:06:21,642 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-31 22:06:21,650 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,658 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,684 INFO L138 Inliner]: procedures = 21, calls = 22, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 52 [2024-10-31 22:06:21,684 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-31 22:06:21,685 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-31 22:06:21,685 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-31 22:06:21,685 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-31 22:06:21,700 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,701 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,704 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,737 INFO L175 MemorySlicer]: Split 2 memory accesses to 1 slices as follows [2]. 100 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2]. The 0 writes are split as follows [0]. [2024-10-31 22:06:21,738 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,738 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,751 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,756 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,758 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,763 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-31 22:06:21,767 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-31 22:06:21,767 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-31 22:06:21,767 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-31 22:06:21,768 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (1/1) ... [2024-10-31 22:06:21,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-31 22:06:21,790 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:21,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-31 22:06:21,810 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-31 22:06:21,846 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-31 22:06:21,847 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-10-31 22:06:21,848 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-10-31 22:06:21,848 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-10-31 22:06:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-10-31 22:06:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-10-31 22:06:21,849 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-10-31 22:06:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-31 22:06:21,849 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-10-31 22:06:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-10-31 22:06:21,850 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-31 22:06:21,850 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-31 22:06:21,854 WARN L207 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-10-31 22:06:21,971 INFO L238 CfgBuilder]: Building ICFG [2024-10-31 22:06:21,974 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-31 22:06:22,389 INFO L283 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-10-31 22:06:22,390 INFO L287 CfgBuilder]: Performing block encoding [2024-10-31 22:06:22,651 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-31 22:06:22,651 INFO L316 CfgBuilder]: Removed 3 assume(true) statements. [2024-10-31 22:06:22,652 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:22 BoogieIcfgContainer [2024-10-31 22:06:22,652 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-31 22:06:22,659 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-31 22:06:22,659 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-31 22:06:22,664 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-31 22:06:22,664 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 31.10 10:06:21" (1/3) ... [2024-10-31 22:06:22,665 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc8e207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:22, skipping insertion in model container [2024-10-31 22:06:22,665 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 31.10 10:06:21" (2/3) ... [2024-10-31 22:06:22,666 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4cc8e207 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 31.10 10:06:22, skipping insertion in model container [2024-10-31 22:06:22,666 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 31.10 10:06:22" (3/3) ... [2024-10-31 22:06:22,669 INFO L112 eAbstractionObserver]: Analyzing ICFG parallel-misc-3-extended.wvr.c [2024-10-31 22:06:22,696 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-31 22:06:22,697 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-10-31 22:06:22,697 INFO L489 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-10-31 22:06:22,780 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-10-31 22:06:22,842 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 44 places, 40 transitions, 101 flow [2024-10-31 22:06:22,938 INFO L124 PetriNetUnfolderBase]: 6/37 cut-off events. [2024-10-31 22:06:22,938 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:06:22,944 INFO L83 FinitePrefix]: Finished finitePrefix Result has 50 conditions, 37 events. 6/37 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 6. Compared 73 event pairs, 0 based on Foata normal form. 0/30 useless extension candidates. Maximal degree in co-relation 33. Up to 2 conditions per place. [2024-10-31 22:06:22,944 INFO L82 GeneralOperation]: Start removeDead. Operand has 44 places, 40 transitions, 101 flow [2024-10-31 22:06:22,952 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 40 places, 36 transitions, 90 flow [2024-10-31 22:06:22,964 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-31 22:06:22,972 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;@c0c358, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-31 22:06:22,972 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-10-31 22:06:23,007 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-10-31 22:06:23,007 INFO L124 PetriNetUnfolderBase]: 6/35 cut-off events. [2024-10-31 22:06:23,008 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-10-31 22:06:23,008 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:23,009 INFO L204 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:23,009 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)] === [2024-10-31 22:06:23,031 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:23,035 INFO L85 PathProgramCache]: Analyzing trace with hash -355086918, now seen corresponding path program 1 times [2024-10-31 22:06:23,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:23,064 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1616362442] [2024-10-31 22:06:23,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:23,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:23,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:23,544 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:23,545 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:23,546 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1616362442] [2024-10-31 22:06:23,547 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1616362442] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:23,547 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:23,547 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:23,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354521121] [2024-10-31 22:06:23,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:23,560 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:23,565 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:23,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:23,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:23,610 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-31 22:06:23,613 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 40 places, 36 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:23,614 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:23,614 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-31 22:06:23,615 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:24,086 INFO L124 PetriNetUnfolderBase]: 872/1394 cut-off events. [2024-10-31 22:06:24,086 INFO L125 PetriNetUnfolderBase]: For 74/74 co-relation queries the response was YES. [2024-10-31 22:06:24,095 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2569 conditions, 1394 events. 872/1394 cut-off events. For 74/74 co-relation queries the response was YES. Maximal size of possible extension queue 85. Compared 6593 event pairs, 86 based on Foata normal form. 1/1236 useless extension candidates. Maximal degree in co-relation 2294. Up to 1025 conditions per place. [2024-10-31 22:06:24,110 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 32 selfloop transitions, 7 changer transitions 1/53 dead transitions. [2024-10-31 22:06:24,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 53 transitions, 219 flow [2024-10-31 22:06:24,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:24,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:24,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-31 22:06:24,127 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-10-31 22:06:24,130 INFO L175 Difference]: Start difference. First operand has 40 places, 36 transitions, 90 flow. Second operand 3 states and 89 transitions. [2024-10-31 22:06:24,132 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 53 transitions, 219 flow [2024-10-31 22:06:24,136 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 53 transitions, 197 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-10-31 22:06:24,142 INFO L231 Difference]: Finished difference. Result has 37 places, 42 transitions, 125 flow [2024-10-31 22:06:24,145 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=78, PETRI_DIFFERENCE_MINUEND_PLACES=34, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=36, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=125, PETRI_PLACES=37, PETRI_TRANSITIONS=42} [2024-10-31 22:06:24,153 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -3 predicate places. [2024-10-31 22:06:24,153 INFO L471 AbstractCegarLoop]: Abstraction has has 37 places, 42 transitions, 125 flow [2024-10-31 22:06:24,154 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 20.666666666666668) internal successors, (62), 3 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:24,155 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:24,156 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] [2024-10-31 22:06:24,156 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-31 22:06:24,157 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)] === [2024-10-31 22:06:24,158 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:24,160 INFO L85 PathProgramCache]: Analyzing trace with hash 1445721854, now seen corresponding path program 1 times [2024-10-31 22:06:24,160 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:24,161 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1592234692] [2024-10-31 22:06:24,161 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:24,161 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:24,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:24,364 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:24,365 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:24,365 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1592234692] [2024-10-31 22:06:24,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1592234692] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:24,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:24,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:24,366 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963414271] [2024-10-31 22:06:24,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:24,370 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:24,370 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:24,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:24,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:24,376 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2024-10-31 22:06:24,377 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 37 places, 42 transitions, 125 flow. Second operand has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:24,377 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:24,377 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2024-10-31 22:06:24,377 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:24,551 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([320] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~pos~0][24], [5#L121-4true, Black: 49#(= ~pos~0 0), 26#thread3EXITtrue, 12#L50true, 47#true, 7#L72true, 53#(= ~g2~0 1)]) [2024-10-31 22:06:24,551 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,551 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,552 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,552 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-10-31 22:06:24,552 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([321] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork2_#t~post2=|v_thread1Thread1of1ForFork2_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post2, ~pos~0][25], [5#L121-4true, Black: 49#(= ~pos~0 0), 26#thread3EXITtrue, 12#L50true, 47#true, 7#L72true, 53#(= ~g2~0 1)]) [2024-10-31 22:06:24,553 INFO L294 olderBase$Statistics]: this new event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,553 INFO L297 olderBase$Statistics]: existing Event has 16 ancestors and is cut-off event [2024-10-31 22:06:24,553 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,553 INFO L297 olderBase$Statistics]: existing Event has 20 ancestors and is cut-off event [2024-10-31 22:06:24,568 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([320] L44-->L50: Formula: (= (+ v_~pos~0_28 1) v_~pos~0_27) InVars {~pos~0=v_~pos~0_28} OutVars{thread1Thread1of1ForFork2_#t~post1=|v_thread1Thread1of1ForFork2_#t~post1_1|, ~pos~0=v_~pos~0_27} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post1, ~pos~0][24], [17#L122true, Black: 49#(= ~pos~0 0), 26#thread3EXITtrue, 12#L50true, 47#true, 7#L72true, 53#(= ~g2~0 1)]) [2024-10-31 22:06:24,569 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,569 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,569 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-10-31 22:06:24,569 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,570 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([321] L48-->L50: Formula: (= (+ v_~pos~0_19 1) v_~pos~0_20) InVars {~pos~0=v_~pos~0_20} OutVars{thread1Thread1of1ForFork2_#t~post2=|v_thread1Thread1of1ForFork2_#t~post2_1|, ~pos~0=v_~pos~0_19} AuxVars[] AssignedVars[thread1Thread1of1ForFork2_#t~post2, ~pos~0][25], [17#L122true, Black: 49#(= ~pos~0 0), 26#thread3EXITtrue, 12#L50true, 47#true, 7#L72true, 53#(= ~g2~0 1)]) [2024-10-31 22:06:24,570 INFO L294 olderBase$Statistics]: this new event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,570 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,571 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-10-31 22:06:24,571 INFO L297 olderBase$Statistics]: existing Event has 17 ancestors and is cut-off event [2024-10-31 22:06:24,649 INFO L124 PetriNetUnfolderBase]: 698/1163 cut-off events. [2024-10-31 22:06:24,649 INFO L125 PetriNetUnfolderBase]: For 244/338 co-relation queries the response was YES. [2024-10-31 22:06:24,655 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2383 conditions, 1163 events. 698/1163 cut-off events. For 244/338 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 5654 event pairs, 79 based on Foata normal form. 48/1033 useless extension candidates. Maximal degree in co-relation 1075. Up to 466 conditions per place. [2024-10-31 22:06:24,663 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 30 selfloop transitions, 2 changer transitions 0/53 dead transitions. [2024-10-31 22:06:24,663 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 39 places, 53 transitions, 217 flow [2024-10-31 22:06:24,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:24,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:24,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 91 transitions. [2024-10-31 22:06:24,666 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7583333333333333 [2024-10-31 22:06:24,666 INFO L175 Difference]: Start difference. First operand has 37 places, 42 transitions, 125 flow. Second operand 3 states and 91 transitions. [2024-10-31 22:06:24,667 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 39 places, 53 transitions, 217 flow [2024-10-31 22:06:24,668 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 38 places, 53 transitions, 208 flow, removed 1 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:24,670 INFO L231 Difference]: Finished difference. Result has 39 places, 43 transitions, 128 flow [2024-10-31 22:06:24,670 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=116, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=42, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=128, PETRI_PLACES=39, PETRI_TRANSITIONS=43} [2024-10-31 22:06:24,671 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, -1 predicate places. [2024-10-31 22:06:24,671 INFO L471 AbstractCegarLoop]: Abstraction has has 39 places, 43 transitions, 128 flow [2024-10-31 22:06:24,671 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.333333333333332) internal successors, (76), 3 states have internal predecessors, (76), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:24,672 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:24,672 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] [2024-10-31 22:06:24,674 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-31 22:06:24,674 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)] === [2024-10-31 22:06:24,676 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:24,676 INFO L85 PathProgramCache]: Analyzing trace with hash 207352506, now seen corresponding path program 1 times [2024-10-31 22:06:24,676 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:24,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828119902] [2024-10-31 22:06:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:24,677 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:24,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:24,802 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:24,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:24,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828119902] [2024-10-31 22:06:24,803 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828119902] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:24,803 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:24,803 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:24,803 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1753849099] [2024-10-31 22:06:24,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:24,804 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:24,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:24,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:24,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:24,810 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2024-10-31 22:06:24,811 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 39 places, 43 transitions, 128 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:24,811 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:24,812 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2024-10-31 22:06:24,812 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:25,045 INFO L124 PetriNetUnfolderBase]: 801/1278 cut-off events. [2024-10-31 22:06:25,045 INFO L125 PetriNetUnfolderBase]: For 480/706 co-relation queries the response was YES. [2024-10-31 22:06:25,049 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2944 conditions, 1278 events. 801/1278 cut-off events. For 480/706 co-relation queries the response was YES. Maximal size of possible extension queue 77. Compared 6096 event pairs, 101 based on Foata normal form. 46/1090 useless extension candidates. Maximal degree in co-relation 955. Up to 631 conditions per place. [2024-10-31 22:06:25,059 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 33 selfloop transitions, 2 changer transitions 0/56 dead transitions. [2024-10-31 22:06:25,059 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 41 places, 56 transitions, 237 flow [2024-10-31 22:06:25,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:25,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:25,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 92 transitions. [2024-10-31 22:06:25,061 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7666666666666667 [2024-10-31 22:06:25,061 INFO L175 Difference]: Start difference. First operand has 39 places, 43 transitions, 128 flow. Second operand 3 states and 92 transitions. [2024-10-31 22:06:25,061 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 41 places, 56 transitions, 237 flow [2024-10-31 22:06:25,063 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 56 transitions, 234 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:25,064 INFO L231 Difference]: Finished difference. Result has 41 places, 44 transitions, 138 flow [2024-10-31 22:06:25,065 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=38, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=138, PETRI_PLACES=41, PETRI_TRANSITIONS=44} [2024-10-31 22:06:25,065 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 1 predicate places. [2024-10-31 22:06:25,066 INFO L471 AbstractCegarLoop]: Abstraction has has 41 places, 44 transitions, 138 flow [2024-10-31 22:06:25,066 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:25,066 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:25,066 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] [2024-10-31 22:06:25,067 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-31 22:06:25,067 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)] === [2024-10-31 22:06:25,068 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:25,068 INFO L85 PathProgramCache]: Analyzing trace with hash -113919402, now seen corresponding path program 1 times [2024-10-31 22:06:25,068 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:25,068 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111069749] [2024-10-31 22:06:25,068 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:25,069 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:25,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:25,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:25,298 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:25,299 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111069749] [2024-10-31 22:06:25,300 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111069749] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:25,300 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:25,301 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:25,301 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900466028] [2024-10-31 22:06:25,301 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:25,302 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:25,303 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:25,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:25,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:25,313 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 19 out of 40 [2024-10-31 22:06:25,313 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 41 places, 44 transitions, 138 flow. Second operand has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:25,314 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:25,314 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 19 of 40 [2024-10-31 22:06:25,314 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:25,623 INFO L124 PetriNetUnfolderBase]: 875/1404 cut-off events. [2024-10-31 22:06:25,623 INFO L125 PetriNetUnfolderBase]: For 531/629 co-relation queries the response was YES. [2024-10-31 22:06:25,628 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3295 conditions, 1404 events. 875/1404 cut-off events. For 531/629 co-relation queries the response was YES. Maximal size of possible extension queue 91. Compared 6895 event pairs, 97 based on Foata normal form. 45/1324 useless extension candidates. Maximal degree in co-relation 1107. Up to 703 conditions per place. [2024-10-31 22:06:25,638 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 33 selfloop transitions, 2 changer transitions 0/54 dead transitions. [2024-10-31 22:06:25,639 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 43 places, 54 transitions, 239 flow [2024-10-31 22:06:25,639 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:25,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:25,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 89 transitions. [2024-10-31 22:06:25,640 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7416666666666667 [2024-10-31 22:06:25,640 INFO L175 Difference]: Start difference. First operand has 41 places, 44 transitions, 138 flow. Second operand 3 states and 89 transitions. [2024-10-31 22:06:25,641 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 43 places, 54 transitions, 239 flow [2024-10-31 22:06:25,642 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 42 places, 54 transitions, 236 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:25,644 INFO L231 Difference]: Finished difference. Result has 43 places, 43 transitions, 140 flow [2024-10-31 22:06:25,645 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=132, PETRI_DIFFERENCE_MINUEND_PLACES=40, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=2, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=140, PETRI_PLACES=43, PETRI_TRANSITIONS=43} [2024-10-31 22:06:25,647 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 3 predicate places. [2024-10-31 22:06:25,647 INFO L471 AbstractCegarLoop]: Abstraction has has 43 places, 43 transitions, 140 flow [2024-10-31 22:06:25,647 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.0) internal successors, (75), 3 states have internal predecessors, (75), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:25,648 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:25,648 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] [2024-10-31 22:06:25,648 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-31 22:06:25,648 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)] === [2024-10-31 22:06:25,650 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:25,650 INFO L85 PathProgramCache]: Analyzing trace with hash 575063584, now seen corresponding path program 1 times [2024-10-31 22:06:25,650 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:25,650 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205222376] [2024-10-31 22:06:25,651 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:25,651 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:25,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:25,793 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-31 22:06:25,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:25,794 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205222376] [2024-10-31 22:06:25,794 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205222376] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:25,794 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:25,794 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-31 22:06:25,794 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964996703] [2024-10-31 22:06:25,795 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:25,795 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-31 22:06:25,795 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:25,796 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-31 22:06:25,796 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-31 22:06:25,802 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 20 out of 40 [2024-10-31 22:06:25,802 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 43 places, 43 transitions, 140 flow. Second operand has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:25,802 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:25,803 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 20 of 40 [2024-10-31 22:06:25,803 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:26,093 INFO L124 PetriNetUnfolderBase]: 890/1453 cut-off events. [2024-10-31 22:06:26,094 INFO L125 PetriNetUnfolderBase]: For 811/1027 co-relation queries the response was YES. [2024-10-31 22:06:26,099 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3558 conditions, 1453 events. 890/1453 cut-off events. For 811/1027 co-relation queries the response was YES. Maximal size of possible extension queue 90. Compared 7153 event pairs, 182 based on Foata normal form. 42/1222 useless extension candidates. Maximal degree in co-relation 1182. Up to 539 conditions per place. [2024-10-31 22:06:26,110 INFO L140 encePairwiseOnDemand]: 37/40 looper letters, 33 selfloop transitions, 2 changer transitions 0/55 dead transitions. [2024-10-31 22:06:26,111 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 45 places, 55 transitions, 255 flow [2024-10-31 22:06:26,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-31 22:06:26,111 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-10-31 22:06:26,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 90 transitions. [2024-10-31 22:06:26,116 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-31 22:06:26,116 INFO L175 Difference]: Start difference. First operand has 43 places, 43 transitions, 140 flow. Second operand 3 states and 90 transitions. [2024-10-31 22:06:26,116 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 45 places, 55 transitions, 255 flow [2024-10-31 22:06:26,118 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 43 places, 55 transitions, 249 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-10-31 22:06:26,121 INFO L231 Difference]: Finished difference. Result has 44 places, 44 transitions, 148 flow [2024-10-31 22:06:26,124 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=136, PETRI_DIFFERENCE_MINUEND_PLACES=41, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=43, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=148, PETRI_PLACES=44, PETRI_TRANSITIONS=44} [2024-10-31 22:06:26,125 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 4 predicate places. [2024-10-31 22:06:26,125 INFO L471 AbstractCegarLoop]: Abstraction has has 44 places, 44 transitions, 148 flow [2024-10-31 22:06:26,126 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 25.666666666666668) internal successors, (77), 3 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:26,126 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:26,126 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, 1, 1, 1, 1] [2024-10-31 22:06:26,126 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-31 22:06:26,129 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)] === [2024-10-31 22:06:26,129 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:26,130 INFO L85 PathProgramCache]: Analyzing trace with hash 576627728, now seen corresponding path program 1 times [2024-10-31 22:06:26,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:26,130 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032539883] [2024-10-31 22:06:26,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:26,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:26,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:26,459 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-10-31 22:06:26,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:26,460 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032539883] [2024-10-31 22:06:26,460 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2032539883] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:26,460 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:26,461 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:26,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111890739] [2024-10-31 22:06:26,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:26,462 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:26,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:26,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:26,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:26,472 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-31 22:06:26,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 44 places, 44 transitions, 148 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:26,473 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:26,473 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-31 22:06:26,473 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:27,039 INFO L124 PetriNetUnfolderBase]: 2153/3269 cut-off events. [2024-10-31 22:06:27,039 INFO L125 PetriNetUnfolderBase]: For 1827/1951 co-relation queries the response was YES. [2024-10-31 22:06:27,051 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8496 conditions, 3269 events. 2153/3269 cut-off events. For 1827/1951 co-relation queries the response was YES. Maximal size of possible extension queue 153. Compared 16872 event pairs, 401 based on Foata normal form. 65/3004 useless extension candidates. Maximal degree in co-relation 3592. Up to 1150 conditions per place. [2024-10-31 22:06:27,079 INFO L140 encePairwiseOnDemand]: 36/40 looper letters, 50 selfloop transitions, 5 changer transitions 0/73 dead transitions. [2024-10-31 22:06:27,080 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 73 transitions, 360 flow [2024-10-31 22:06:27,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:06:27,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:06:27,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 119 transitions. [2024-10-31 22:06:27,081 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.74375 [2024-10-31 22:06:27,082 INFO L175 Difference]: Start difference. First operand has 44 places, 44 transitions, 148 flow. Second operand 4 states and 119 transitions. [2024-10-31 22:06:27,082 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 73 transitions, 360 flow [2024-10-31 22:06:27,084 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 46 places, 73 transitions, 356 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-10-31 22:06:27,088 INFO L231 Difference]: Finished difference. Result has 47 places, 47 transitions, 176 flow [2024-10-31 22:06:27,089 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=146, PETRI_DIFFERENCE_MINUEND_PLACES=43, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=40, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=176, PETRI_PLACES=47, PETRI_TRANSITIONS=47} [2024-10-31 22:06:27,089 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 7 predicate places. [2024-10-31 22:06:27,091 INFO L471 AbstractCegarLoop]: Abstraction has has 47 places, 47 transitions, 176 flow [2024-10-31 22:06:27,091 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:27,092 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:27,092 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:27,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-31 22:06:27,092 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)] === [2024-10-31 22:06:27,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:27,093 INFO L85 PathProgramCache]: Analyzing trace with hash 586771438, now seen corresponding path program 1 times [2024-10-31 22:06:27,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:27,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1712141253] [2024-10-31 22:06:27,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:27,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:27,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-10-31 22:06:27,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:27,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1712141253] [2024-10-31 22:06:27,404 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1712141253] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:27,404 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:27,404 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:27,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776374255] [2024-10-31 22:06:27,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:27,405 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:27,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:27,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:27,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:27,417 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-31 22:06:27,418 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 47 places, 47 transitions, 176 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:27,418 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:27,418 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-31 22:06:27,419 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:28,325 INFO L124 PetriNetUnfolderBase]: 3423/5060 cut-off events. [2024-10-31 22:06:28,325 INFO L125 PetriNetUnfolderBase]: For 6737/7456 co-relation queries the response was YES. [2024-10-31 22:06:28,342 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14335 conditions, 5060 events. 3423/5060 cut-off events. For 6737/7456 co-relation queries the response was YES. Maximal size of possible extension queue 260. Compared 27571 event pairs, 791 based on Foata normal form. 188/4264 useless extension candidates. Maximal degree in co-relation 5151. Up to 1747 conditions per place. [2024-10-31 22:06:28,381 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 54 selfloop transitions, 5 changer transitions 0/77 dead transitions. [2024-10-31 22:06:28,381 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 50 places, 77 transitions, 428 flow [2024-10-31 22:06:28,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:06:28,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:06:28,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 118 transitions. [2024-10-31 22:06:28,383 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.7375 [2024-10-31 22:06:28,383 INFO L175 Difference]: Start difference. First operand has 47 places, 47 transitions, 176 flow. Second operand 4 states and 118 transitions. [2024-10-31 22:06:28,383 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 50 places, 77 transitions, 428 flow [2024-10-31 22:06:28,390 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 50 places, 77 transitions, 422 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:28,393 INFO L231 Difference]: Finished difference. Result has 52 places, 49 transitions, 206 flow [2024-10-31 22:06:28,394 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=170, PETRI_DIFFERENCE_MINUEND_PLACES=47, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=46, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=42, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=206, PETRI_PLACES=52, PETRI_TRANSITIONS=49} [2024-10-31 22:06:28,395 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 12 predicate places. [2024-10-31 22:06:28,396 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 49 transitions, 206 flow [2024-10-31 22:06:28,396 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:28,396 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:28,396 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:28,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-31 22:06:28,397 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)] === [2024-10-31 22:06:28,397 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:28,397 INFO L85 PathProgramCache]: Analyzing trace with hash 1304856488, now seen corresponding path program 1 times [2024-10-31 22:06:28,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:28,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [503871737] [2024-10-31 22:06:28,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:28,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:28,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:28,813 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-10-31 22:06:28,814 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:28,814 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [503871737] [2024-10-31 22:06:28,815 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [503871737] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-31 22:06:28,816 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-31 22:06:28,816 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-31 22:06:28,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993816149] [2024-10-31 22:06:28,817 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-31 22:06:28,817 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-31 22:06:28,818 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:28,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-31 22:06:28,819 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-10-31 22:06:28,831 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 18 out of 40 [2024-10-31 22:06:28,832 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 49 transitions, 206 flow. Second operand has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:28,836 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:28,836 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 18 of 40 [2024-10-31 22:06:28,836 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:30,050 INFO L124 PetriNetUnfolderBase]: 4038/6134 cut-off events. [2024-10-31 22:06:30,051 INFO L125 PetriNetUnfolderBase]: For 9899/11824 co-relation queries the response was YES. [2024-10-31 22:06:30,075 INFO L83 FinitePrefix]: Finished finitePrefix Result has 18840 conditions, 6134 events. 4038/6134 cut-off events. For 9899/11824 co-relation queries the response was YES. Maximal size of possible extension queue 259. Compared 35069 event pairs, 1093 based on Foata normal form. 617/5607 useless extension candidates. Maximal degree in co-relation 7391. Up to 1929 conditions per place. [2024-10-31 22:06:30,120 INFO L140 encePairwiseOnDemand]: 35/40 looper letters, 61 selfloop transitions, 5 changer transitions 0/85 dead transitions. [2024-10-31 22:06:30,120 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 55 places, 85 transitions, 514 flow [2024-10-31 22:06:30,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-31 22:06:30,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-10-31 22:06:30,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 120 transitions. [2024-10-31 22:06:30,125 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.75 [2024-10-31 22:06:30,126 INFO L175 Difference]: Start difference. First operand has 52 places, 49 transitions, 206 flow. Second operand 4 states and 120 transitions. [2024-10-31 22:06:30,126 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 55 places, 85 transitions, 514 flow [2024-10-31 22:06:30,131 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 55 places, 85 transitions, 508 flow, removed 3 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:30,133 INFO L231 Difference]: Finished difference. Result has 57 places, 51 transitions, 236 flow [2024-10-31 22:06:30,133 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=200, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=48, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=44, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=236, PETRI_PLACES=57, PETRI_TRANSITIONS=51} [2024-10-31 22:06:30,135 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 17 predicate places. [2024-10-31 22:06:30,136 INFO L471 AbstractCegarLoop]: Abstraction has has 57 places, 51 transitions, 236 flow [2024-10-31 22:06:30,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.75) internal successors, (91), 4 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:30,137 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:30,137 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:30,137 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-31 22:06:30,137 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)] === [2024-10-31 22:06:30,138 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:30,138 INFO L85 PathProgramCache]: Analyzing trace with hash 1446710806, now seen corresponding path program 1 times [2024-10-31 22:06:30,139 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:30,139 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1026882833] [2024-10-31 22:06:30,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:30,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:30,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:30,373 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:06:30,373 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:30,373 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1026882833] [2024-10-31 22:06:30,374 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1026882833] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:30,374 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [768369429] [2024-10-31 22:06:30,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:30,375 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:30,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:30,378 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:30,380 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-31 22:06:30,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:30,526 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:06:30,532 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:30,663 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:06:30,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:30,791 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-10-31 22:06:30,791 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [768369429] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:30,792 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:30,792 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-31 22:06:30,792 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2140500586] [2024-10-31 22:06:30,792 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:30,794 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:06:30,794 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:30,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:06:30,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:06:30,805 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-31 22:06:30,805 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 57 places, 51 transitions, 236 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:30,806 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:30,806 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-31 22:06:30,806 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:34,391 INFO L124 PetriNetUnfolderBase]: 11038/17841 cut-off events. [2024-10-31 22:06:34,391 INFO L125 PetriNetUnfolderBase]: For 22811/24321 co-relation queries the response was YES. [2024-10-31 22:06:34,459 INFO L83 FinitePrefix]: Finished finitePrefix Result has 55494 conditions, 17841 events. 11038/17841 cut-off events. For 22811/24321 co-relation queries the response was YES. Maximal size of possible extension queue 572. Compared 122570 event pairs, 1828 based on Foata normal form. 716/18247 useless extension candidates. Maximal degree in co-relation 17936. Up to 7491 conditions per place. [2024-10-31 22:06:34,659 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 113 selfloop transitions, 28 changer transitions 1/158 dead transitions. [2024-10-31 22:06:34,660 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 158 transitions, 1035 flow [2024-10-31 22:06:34,660 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:34,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:06:34,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 199 transitions. [2024-10-31 22:06:34,662 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8291666666666667 [2024-10-31 22:06:34,662 INFO L175 Difference]: Start difference. First operand has 57 places, 51 transitions, 236 flow. Second operand 6 states and 199 transitions. [2024-10-31 22:06:34,663 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 158 transitions, 1035 flow [2024-10-31 22:06:34,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 62 places, 158 transitions, 1031 flow, removed 2 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:34,675 INFO L231 Difference]: Finished difference. Result has 63 places, 75 transitions, 411 flow [2024-10-31 22:06:34,675 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=234, PETRI_DIFFERENCE_MINUEND_PLACES=57, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=51, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=411, PETRI_PLACES=63, PETRI_TRANSITIONS=75} [2024-10-31 22:06:34,677 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 23 predicate places. [2024-10-31 22:06:34,677 INFO L471 AbstractCegarLoop]: Abstraction has has 63 places, 75 transitions, 411 flow [2024-10-31 22:06:34,677 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:34,677 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:34,678 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:34,714 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-31 22:06:34,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:34,879 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)] === [2024-10-31 22:06:34,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:34,879 INFO L85 PathProgramCache]: Analyzing trace with hash 2019315392, now seen corresponding path program 2 times [2024-10-31 22:06:34,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:34,880 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [996893562] [2024-10-31 22:06:34,880 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:34,880 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:34,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:35,178 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:35,178 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [996893562] [2024-10-31 22:06:35,179 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [996893562] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:35,179 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1902404140] [2024-10-31 22:06:35,179 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-31 22:06:35,179 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:35,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:35,183 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:35,185 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-31 22:06:35,297 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-31 22:06:35,298 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:06:35,300 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:06:35,302 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:35,394 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:35,394 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:35,488 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:35,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1902404140] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:35,489 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:35,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-10-31 22:06:35,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [22984751] [2024-10-31 22:06:35,490 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:35,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-31 22:06:35,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:35,491 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-31 22:06:35,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-31 22:06:35,512 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-31 22:06:35,513 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 63 places, 75 transitions, 411 flow. Second operand has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:35,513 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:35,513 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-31 22:06:35,514 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-10-31 22:06:41,500 INFO L124 PetriNetUnfolderBase]: 26817/43271 cut-off events. [2024-10-31 22:06:41,500 INFO L125 PetriNetUnfolderBase]: For 78133/81830 co-relation queries the response was YES. [2024-10-31 22:06:41,677 INFO L83 FinitePrefix]: Finished finitePrefix Result has 150483 conditions, 43271 events. 26817/43271 cut-off events. For 78133/81830 co-relation queries the response was YES. Maximal size of possible extension queue 1396. Compared 339190 event pairs, 2910 based on Foata normal form. 1913/44471 useless extension candidates. Maximal degree in co-relation 43382. Up to 17655 conditions per place. [2024-10-31 22:06:41,922 INFO L140 encePairwiseOnDemand]: 32/40 looper letters, 147 selfloop transitions, 46 changer transitions 1/210 dead transitions. [2024-10-31 22:06:41,923 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 68 places, 210 transitions, 1530 flow [2024-10-31 22:06:41,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-31 22:06:41,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-10-31 22:06:41,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 203 transitions. [2024-10-31 22:06:41,925 INFO L512 CegarLoopForPetriNet]: DFA transition density 0.8458333333333333 [2024-10-31 22:06:41,925 INFO L175 Difference]: Start difference. First operand has 63 places, 75 transitions, 411 flow. Second operand 6 states and 203 transitions. [2024-10-31 22:06:41,925 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 68 places, 210 transitions, 1530 flow [2024-10-31 22:06:41,957 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 68 places, 210 transitions, 1410 flow, removed 60 selfloop flow, removed 0 redundant places. [2024-10-31 22:06:41,960 INFO L231 Difference]: Finished difference. Result has 71 places, 117 transitions, 749 flow [2024-10-31 22:06:41,961 INFO L260 CegarLoopForPetriNet]: {PETRI_ALPHABET=40, PETRI_DIFFERENCE_MINUEND_FLOW=363, PETRI_DIFFERENCE_MINUEND_PLACES=63, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=75, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=10, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=47, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=749, PETRI_PLACES=71, PETRI_TRANSITIONS=117} [2024-10-31 22:06:41,962 INFO L277 CegarLoopForPetriNet]: 40 programPoint places, 31 predicate places. [2024-10-31 22:06:41,963 INFO L471 AbstractCegarLoop]: Abstraction has has 71 places, 117 transitions, 749 flow [2024-10-31 22:06:41,963 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 20.333333333333332) internal successors, (122), 6 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:41,963 INFO L196 CegarLoopForPetriNet]: Found error trace [2024-10-31 22:06:41,964 INFO L204 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-31 22:06:41,987 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-31 22:06:42,164 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:42,165 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)] === [2024-10-31 22:06:42,165 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-31 22:06:42,166 INFO L85 PathProgramCache]: Analyzing trace with hash 598632594, now seen corresponding path program 3 times [2024-10-31 22:06:42,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-31 22:06:42,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [533520716] [2024-10-31 22:06:42,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-31 22:06:42,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-31 22:06:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-31 22:06:42,434 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:42,435 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-31 22:06:42,435 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [533520716] [2024-10-31 22:06:42,435 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [533520716] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-31 22:06:42,436 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [447471768] [2024-10-31 22:06:42,436 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-10-31 22:06:42,436 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-31 22:06:42,436 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 [2024-10-31 22:06:42,439 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-31 22:06:42,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_732e8ae5-a7d1-4559-910e-b1b5e837a77e/bin/uautomizer-verify-4GaUIPS5ZU/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-31 22:06:42,556 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2024-10-31 22:06:42,556 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-31 22:06:42,559 INFO L255 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-10-31 22:06:42,563 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-31 22:06:42,661 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:42,661 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-31 22:06:42,746 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 14 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-31 22:06:42,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [447471768] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-31 22:06:42,747 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-31 22:06:42,747 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 6 [2024-10-31 22:06:42,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059595624] [2024-10-31 22:06:42,748 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-31 22:06:42,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-31 22:06:42,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-31 22:06:42,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-31 22:06:42,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-31 22:06:42,771 INFO L467 CegarLoopForPetriNet]: Number of universal loopers: 16 out of 40 [2024-10-31 22:06:42,772 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 71 places, 117 transitions, 749 flow. Second operand has 7 states, 7 states have (on average 19.714285714285715) internal successors, (138), 7 states have internal predecessors, (138), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-31 22:06:42,772 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-10-31 22:06:42,772 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 16 of 40 [2024-10-31 22:06:42,773 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand