./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/config/AutomizerReach.xml -i ../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB --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 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-11-28 05:06:27,569 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-28 05:06:27,681 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-28 05:06:27,688 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-28 05:06:27,688 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-28 05:06:27,728 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-28 05:06:27,729 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-28 05:06:27,730 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-28 05:06:27,730 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-28 05:06:27,731 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-28 05:06:27,732 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-28 05:06:27,732 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-28 05:06:27,732 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-28 05:06:27,733 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-28 05:06:27,733 INFO L153 SettingsManager]: * Use SBE=true [2024-11-28 05:06:27,733 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-28 05:06:27,733 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-28 05:06:27,733 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-28 05:06:27,733 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-28 05:06:27,734 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-28 05:06:27,734 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-28 05:06:27,734 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-11-28 05:06:27,735 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-28 05:06:27,735 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-28 05:06:27,736 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:27,736 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:27,736 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:27,736 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:27,736 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-28 05:06:27,737 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:27,738 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-28 05:06:27,738 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-28 05:06:27,739 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-28 05:06:27,739 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-28 05:06:27,739 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-28 05:06:27,739 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-28 05:06:27,739 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB 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 -> 25cf9c0a16564c460f6e824f90a2df4185d2e5d2c682a221258efaf06dec8ca4 [2024-11-28 05:06:28,089 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-28 05:06:28,106 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-28 05:06:28,108 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-28 05:06:28,111 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-28 05:06:28,112 INFO L274 PluginConnector]: CDTParser initialized [2024-11-28 05:06:28,113 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/../../sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-28 05:06:31,338 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed9a590a/0430392b613d45fea844eda02e395131/FLAG4f747a613 [2024-11-28 05:06:31,571 INFO L384 CDTParser]: Found 1 translation units. [2024-11-28 05:06:31,571 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c [2024-11-28 05:06:31,578 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed9a590a/0430392b613d45fea844eda02e395131/FLAG4f747a613 [2024-11-28 05:06:31,590 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/data/1ed9a590a/0430392b613d45fea844eda02e395131 [2024-11-28 05:06:31,593 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-28 05:06:31,594 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-28 05:06:31,595 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:31,596 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-28 05:06:31,600 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-28 05:06:31,601 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,602 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3da4cb23 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31, skipping insertion in model container [2024-11-28 05:06:31,602 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,620 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-28 05:06:31,821 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-28 05:06:31,834 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:31,845 INFO L200 MainTranslator]: Completed pre-run [2024-11-28 05:06:31,867 WARN L250 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/sv-benchmarks/c/weaver/popl20-more-max-array-hom.wvr.c[2625,2638] [2024-11-28 05:06:31,870 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-28 05:06:31,886 INFO L204 MainTranslator]: Completed translation [2024-11-28 05:06:31,887 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31 WrapperNode [2024-11-28 05:06:31,887 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-28 05:06:31,888 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:31,889 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-28 05:06:31,889 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-28 05:06:31,896 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,905 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,932 INFO L138 Inliner]: procedures = 23, calls = 28, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 86 [2024-11-28 05:06:31,933 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-28 05:06:31,933 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-28 05:06:31,933 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-28 05:06:31,935 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-28 05:06:31,944 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,944 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,951 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,975 INFO L175 MemorySlicer]: Split 9 memory accesses to 2 slices as follows [2, 7]. 78 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0]. The 1 writes are split as follows [0, 1]. [2024-11-28 05:06:31,975 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,976 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,994 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:31,996 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:32,002 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:32,004 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:32,005 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:32,016 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-28 05:06:32,017 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-28 05:06:32,017 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-28 05:06:32,017 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-28 05:06:32,018 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (1/1) ... [2024-11-28 05:06:32,027 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-28 05:06:32,041 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:32,057 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-28 05:06:32,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-28 05:06:32,099 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-28 05:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread1 [2024-11-28 05:06:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread1 [2024-11-28 05:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread2 [2024-11-28 05:06:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread2 [2024-11-28 05:06:32,100 INFO L130 BoogieDeclarations]: Found specification of procedure thread3 [2024-11-28 05:06:32,100 INFO L138 BoogieDeclarations]: Found implementation of procedure thread3 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-28 05:06:32,101 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-28 05:06:32,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-28 05:06:32,103 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-11-28 05:06:32,227 INFO L234 CfgBuilder]: Building ICFG [2024-11-28 05:06:32,228 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-28 05:06:32,552 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-11-28 05:06:32,552 INFO L283 CfgBuilder]: Performing block encoding [2024-11-28 05:06:32,777 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-28 05:06:32,777 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-28 05:06:32,777 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:32 BoogieIcfgContainer [2024-11-28 05:06:32,777 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-28 05:06:32,780 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-28 05:06:32,780 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-28 05:06:32,786 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-28 05:06:32,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 05:06:31" (1/3) ... [2024-11-28 05:06:32,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:32, skipping insertion in model container [2024-11-28 05:06:32,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 05:06:31" (2/3) ... [2024-11-28 05:06:32,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4277e503 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 05:06:32, skipping insertion in model container [2024-11-28 05:06:32,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 05:06:32" (3/3) ... [2024-11-28 05:06:32,789 INFO L128 eAbstractionObserver]: Analyzing ICFG popl20-more-max-array-hom.wvr.c [2024-11-28 05:06:32,804 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-28 05:06:32,805 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG popl20-more-max-array-hom.wvr.c that has 4 procedures, 30 locations, 1 initial locations, 4 loop locations, and 1 error locations. [2024-11-28 05:06:32,806 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-11-28 05:06:32,899 INFO L143 ThreadInstanceAdder]: Constructed 3 joinOtherThreadTransitions. [2024-11-28 05:06:32,944 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 39 places, 33 transitions, 87 flow [2024-11-28 05:06:32,990 INFO L124 PetriNetUnfolderBase]: 4/30 cut-off events. [2024-11-28 05:06:32,995 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:06:32,999 INFO L83 FinitePrefix]: Finished finitePrefix Result has 43 conditions, 30 events. 4/30 cut-off events. For 3/3 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 34 event pairs, 0 based on Foata normal form. 0/25 useless extension candidates. Maximal degree in co-relation 24. Up to 2 conditions per place. [2024-11-28 05:06:33,000 INFO L82 GeneralOperation]: Start removeDead. Operand has 39 places, 33 transitions, 87 flow [2024-11-28 05:06:33,003 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 35 places, 29 transitions, 76 flow [2024-11-28 05:06:33,014 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-28 05:06:33,024 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;@1bed49f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-28 05:06:33,025 INFO L334 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2024-11-28 05:06:33,048 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-11-28 05:06:33,049 INFO L124 PetriNetUnfolderBase]: 4/28 cut-off events. [2024-11-28 05:06:33,050 INFO L125 PetriNetUnfolderBase]: For 3/3 co-relation queries the response was YES. [2024-11-28 05:06:33,050 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:33,051 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:33,051 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:06:33,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:33,058 INFO L85 PathProgramCache]: Analyzing trace with hash -212175932, now seen corresponding path program 1 times [2024-11-28 05:06:33,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:33,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [204380265] [2024-11-28 05:06:33,067 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:33,068 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:33,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:33,967 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:33,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:33,968 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [204380265] [2024-11-28 05:06:33,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [204380265] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:33,969 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:33,969 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:33,970 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [131523580] [2024-11-28 05:06:33,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:33,978 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:06:33,982 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:34,004 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:06:34,004 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:06:34,006 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-28 05:06:34,008 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 35 places, 29 transitions, 76 flow. Second operand has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,008 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:34,008 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-28 05:06:34,009 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:34,309 INFO L124 PetriNetUnfolderBase]: 617/947 cut-off events. [2024-11-28 05:06:34,311 INFO L125 PetriNetUnfolderBase]: For 81/81 co-relation queries the response was YES. [2024-11-28 05:06:34,314 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1942 conditions, 947 events. 617/947 cut-off events. For 81/81 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3765 event pairs, 126 based on Foata normal form. 1/934 useless extension candidates. Maximal degree in co-relation 1708. Up to 677 conditions per place. [2024-11-28 05:06:34,324 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 37 selfloop transitions, 4 changer transitions 1/46 dead transitions. [2024-11-28 05:06:34,325 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 46 transitions, 209 flow [2024-11-28 05:06:34,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:06:34,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:06:34,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 64 transitions. [2024-11-28 05:06:34,341 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6464646464646465 [2024-11-28 05:06:34,344 INFO L175 Difference]: Start difference. First operand has 35 places, 29 transitions, 76 flow. Second operand 3 states and 64 transitions. [2024-11-28 05:06:34,345 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 46 transitions, 209 flow [2024-11-28 05:06:34,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 31 places, 46 transitions, 187 flow, removed 0 selfloop flow, removed 6 redundant places. [2024-11-28 05:06:34,357 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 90 flow [2024-11-28 05:06:34,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=64, PETRI_DIFFERENCE_MINUEND_PLACES=29, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=29, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=25, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=90, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-11-28 05:06:34,363 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -3 predicate places. [2024-11-28 05:06:34,365 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 90 flow [2024-11-28 05:06:34,365 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.0) internal successors, (39), 3 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,365 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:34,365 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:34,366 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-28 05:06:34,366 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:06:34,367 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:34,367 INFO L85 PathProgramCache]: Analyzing trace with hash -1399592055, now seen corresponding path program 1 times [2024-11-28 05:06:34,368 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:34,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1243327758] [2024-11-28 05:06:34,368 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:34,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:34,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:34,526 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:06:34,526 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:34,526 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1243327758] [2024-11-28 05:06:34,526 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1243327758] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:34,526 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:34,526 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-28 05:06:34,527 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1183085615] [2024-11-28 05:06:34,527 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:34,528 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-28 05:06:34,528 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:34,528 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-28 05:06:34,529 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-28 05:06:34,537 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-28 05:06:34,537 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 90 flow. Second operand has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,538 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:34,538 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-28 05:06:34,538 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:34,743 INFO L124 PetriNetUnfolderBase]: 617/943 cut-off events. [2024-11-28 05:06:34,745 INFO L125 PetriNetUnfolderBase]: For 195/195 co-relation queries the response was YES. [2024-11-28 05:06:34,747 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2148 conditions, 943 events. 617/943 cut-off events. For 195/195 co-relation queries the response was YES. Maximal size of possible extension queue 68. Compared 3833 event pairs, 407 based on Foata normal form. 0/913 useless extension candidates. Maximal degree in co-relation 802. Up to 895 conditions per place. [2024-11-28 05:06:34,756 INFO L140 encePairwiseOnDemand]: 30/33 looper letters, 27 selfloop transitions, 2 changer transitions 0/33 dead transitions. [2024-11-28 05:06:34,756 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 34 places, 33 transitions, 150 flow [2024-11-28 05:06:34,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-28 05:06:34,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2024-11-28 05:06:34,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 48 transitions. [2024-11-28 05:06:34,758 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.48484848484848486 [2024-11-28 05:06:34,758 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 90 flow. Second operand 3 states and 48 transitions. [2024-11-28 05:06:34,758 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 34 places, 33 transitions, 150 flow [2024-11-28 05:06:34,759 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 33 places, 33 transitions, 146 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-11-28 05:06:34,759 INFO L231 Difference]: Finished difference. Result has 34 places, 33 transitions, 98 flow [2024-11-28 05:06:34,760 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=86, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=1, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=30, PETRI_DIFFERENCE_SUBTRAHEND_STATES=3, PETRI_FLOW=98, PETRI_PLACES=34, PETRI_TRANSITIONS=33} [2024-11-28 05:06:34,760 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, -1 predicate places. [2024-11-28 05:06:34,760 INFO L471 AbstractCegarLoop]: Abstraction has has 34 places, 33 transitions, 98 flow [2024-11-28 05:06:34,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 13.666666666666666) internal successors, (41), 3 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,761 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:34,761 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:34,763 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-28 05:06:34,763 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:06:34,765 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:34,766 INFO L85 PathProgramCache]: Analyzing trace with hash 1274343495, now seen corresponding path program 1 times [2024-11-28 05:06:34,766 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:34,766 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708216421] [2024-11-28 05:06:34,767 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:34,767 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:34,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:34,885 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:06:34,889 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:34,889 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708216421] [2024-11-28 05:06:34,889 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708216421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:06:34,889 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:06:34,889 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-28 05:06:34,889 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1226765775] [2024-11-28 05:06:34,889 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:34,890 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-28 05:06:34,890 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:34,890 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-28 05:06:34,890 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-28 05:06:34,906 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:06:34,907 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 34 places, 33 transitions, 98 flow. Second operand has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:34,907 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:34,907 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:06:34,907 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:35,195 INFO L124 PetriNetUnfolderBase]: 790/1159 cut-off events. [2024-11-28 05:06:35,198 INFO L125 PetriNetUnfolderBase]: For 182/182 co-relation queries the response was YES. [2024-11-28 05:06:35,200 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2573 conditions, 1159 events. 790/1159 cut-off events. For 182/182 co-relation queries the response was YES. Maximal size of possible extension queue 67. Compared 4602 event pairs, 246 based on Foata normal form. 0/1114 useless extension candidates. Maximal degree in co-relation 2560. Up to 576 conditions per place. [2024-11-28 05:06:35,207 INFO L140 encePairwiseOnDemand]: 28/33 looper letters, 40 selfloop transitions, 4 changer transitions 0/47 dead transitions. [2024-11-28 05:06:35,207 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 47 transitions, 224 flow [2024-11-28 05:06:35,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-28 05:06:35,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2024-11-28 05:06:35,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 63 transitions. [2024-11-28 05:06:35,211 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4772727272727273 [2024-11-28 05:06:35,211 INFO L175 Difference]: Start difference. First operand has 34 places, 33 transitions, 98 flow. Second operand 4 states and 63 transitions. [2024-11-28 05:06:35,211 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 47 transitions, 224 flow [2024-11-28 05:06:35,213 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 36 places, 47 transitions, 218 flow, removed 2 selfloop flow, removed 1 redundant places. [2024-11-28 05:06:35,215 INFO L231 Difference]: Finished difference. Result has 38 places, 34 transitions, 113 flow [2024-11-28 05:06:35,216 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=92, PETRI_DIFFERENCE_MINUEND_PLACES=33, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=33, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=4, PETRI_FLOW=113, PETRI_PLACES=38, PETRI_TRANSITIONS=34} [2024-11-28 05:06:35,217 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 3 predicate places. [2024-11-28 05:06:35,218 INFO L471 AbstractCegarLoop]: Abstraction has has 38 places, 34 transitions, 113 flow [2024-11-28 05:06:35,218 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.25) internal successors, (45), 4 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:35,218 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:35,218 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:35,219 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-28 05:06:35,219 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:06:35,219 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:35,220 INFO L85 PathProgramCache]: Analyzing trace with hash -1132907319, now seen corresponding path program 1 times [2024-11-28 05:06:35,220 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:35,220 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [756015992] [2024-11-28 05:06:35,220 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:35,220 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:35,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:35,407 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:06:35,407 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [756015992] [2024-11-28 05:06:35,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [756015992] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:35,407 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1803821694] [2024-11-28 05:06:35,408 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:35,408 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:35,408 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:35,412 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:35,416 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-28 05:06:35,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:35,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-28 05:06:35,529 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:35,612 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:06:35,612 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:35,674 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:06:35,675 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1803821694] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:35,675 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:06:35,675 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4, 4] total 8 [2024-11-28 05:06:35,675 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116068681] [2024-11-28 05:06:35,676 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:06:35,676 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-28 05:06:35,676 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:06:35,678 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-28 05:06:35,678 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-28 05:06:35,688 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:06:35,688 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 38 places, 34 transitions, 113 flow. Second operand has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:35,689 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:06:35,689 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:06:35,689 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:06:35,931 INFO L124 PetriNetUnfolderBase]: 850/1295 cut-off events. [2024-11-28 05:06:35,932 INFO L125 PetriNetUnfolderBase]: For 486/486 co-relation queries the response was YES. [2024-11-28 05:06:35,935 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3227 conditions, 1295 events. 850/1295 cut-off events. For 486/486 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 5464 event pairs, 256 based on Foata normal form. 0/1243 useless extension candidates. Maximal degree in co-relation 3207. Up to 670 conditions per place. [2024-11-28 05:06:35,942 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 41 selfloop transitions, 5 changer transitions 0/50 dead transitions. [2024-11-28 05:06:35,943 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 42 places, 50 transitions, 257 flow [2024-11-28 05:06:35,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-28 05:06:35,943 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-11-28 05:06:35,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 72 transitions. [2024-11-28 05:06:35,945 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.43636363636363634 [2024-11-28 05:06:35,946 INFO L175 Difference]: Start difference. First operand has 38 places, 34 transitions, 113 flow. Second operand 5 states and 72 transitions. [2024-11-28 05:06:35,947 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 42 places, 50 transitions, 257 flow [2024-11-28 05:06:35,951 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 40 places, 50 transitions, 251 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-11-28 05:06:35,952 INFO L231 Difference]: Finished difference. Result has 42 places, 35 transitions, 132 flow [2024-11-28 05:06:35,952 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=109, PETRI_DIFFERENCE_MINUEND_PLACES=36, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=34, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=4, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=29, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=132, PETRI_PLACES=42, PETRI_TRANSITIONS=35} [2024-11-28 05:06:35,953 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 7 predicate places. [2024-11-28 05:06:35,954 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 35 transitions, 132 flow [2024-11-28 05:06:35,954 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.2) internal successors, (51), 5 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:06:35,954 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:06:35,954 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:06:35,964 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-28 05:06:36,155 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:36,155 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:06:36,156 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:06:36,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1269434354, now seen corresponding path program 1 times [2024-11-28 05:06:36,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:06:36,156 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1418779479] [2024-11-28 05:06:36,156 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:36,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:06:36,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:37,421 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:37,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:06:37,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1418779479] [2024-11-28 05:06:37,421 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1418779479] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:06:37,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [820770989] [2024-11-28 05:06:37,422 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:06:37,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:06:37,423 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:06:37,426 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:06:37,429 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-28 05:06:37,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:06:37,531 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:06:37,534 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:06:37,613 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:06:37,995 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-28 05:06:38,160 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:06:38,160 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:06:41,293 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 207 [2024-11-28 05:06:41,395 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:06:41,395 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 290 [2024-11-28 05:07:21,298 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 264 [2024-11-28 05:07:21,319 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-28 05:07:21,320 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 387 treesize of output 1 [2024-11-28 05:07:21,423 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:21,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [820770989] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:21,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:21,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 23 [2024-11-28 05:07:21,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [61372510] [2024-11-28 05:07:21,424 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:21,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2024-11-28 05:07:21,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:21,426 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2024-11-28 05:07:21,426 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=461, Unknown=0, NotChecked=0, Total=552 [2024-11-28 05:07:21,666 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:07:21,667 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 35 transitions, 132 flow. Second operand has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:07:21,667 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:21,667 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:07:21,667 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:07:24,948 INFO L124 PetriNetUnfolderBase]: 1841/2767 cut-off events. [2024-11-28 05:07:24,948 INFO L125 PetriNetUnfolderBase]: For 1740/1740 co-relation queries the response was YES. [2024-11-28 05:07:24,956 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7675 conditions, 2767 events. 1841/2767 cut-off events. For 1740/1740 co-relation queries the response was YES. Maximal size of possible extension queue 136. Compared 12775 event pairs, 98 based on Foata normal form. 1/2767 useless extension candidates. Maximal degree in co-relation 5619. Up to 1375 conditions per place. [2024-11-28 05:07:24,969 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 137 selfloop transitions, 57 changer transitions 1/199 dead transitions. [2024-11-28 05:07:24,970 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 62 places, 199 transitions, 1067 flow [2024-11-28 05:07:24,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-28 05:07:24,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2024-11-28 05:07:24,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 321 transitions. [2024-11-28 05:07:24,973 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.46320346320346323 [2024-11-28 05:07:24,973 INFO L175 Difference]: Start difference. First operand has 42 places, 35 transitions, 132 flow. Second operand 21 states and 321 transitions. [2024-11-28 05:07:24,973 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 62 places, 199 transitions, 1067 flow [2024-11-28 05:07:24,982 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 59 places, 199 transitions, 1050 flow, removed 0 selfloop flow, removed 3 redundant places. [2024-11-28 05:07:24,985 INFO L231 Difference]: Finished difference. Result has 64 places, 91 transitions, 543 flow [2024-11-28 05:07:24,986 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=126, PETRI_DIFFERENCE_MINUEND_PLACES=39, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=35, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=21, PETRI_DIFFERENCE_SUBTRAHEND_STATES=21, PETRI_FLOW=543, PETRI_PLACES=64, PETRI_TRANSITIONS=91} [2024-11-28 05:07:24,987 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 29 predicate places. [2024-11-28 05:07:24,988 INFO L471 AbstractCegarLoop]: Abstraction has has 64 places, 91 transitions, 543 flow [2024-11-28 05:07:24,988 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 24 states have (on average 8.708333333333334) internal successors, (209), 24 states have internal predecessors, (209), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:07:24,988 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:07:24,989 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:07:24,999 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-28 05:07:25,193 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:25,193 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:07:25,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:07:25,194 INFO L85 PathProgramCache]: Analyzing trace with hash -78465058, now seen corresponding path program 2 times [2024-11-28 05:07:25,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:07:25,194 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [894037072] [2024-11-28 05:07:25,194 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:25,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:07:25,244 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:25,244 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:25,960 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:07:25,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:07:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [894037072] [2024-11-28 05:07:25,960 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [894037072] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:07:25,960 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2086125386] [2024-11-28 05:07:25,960 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:07:25,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:07:25,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:07:25,962 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:07:25,965 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-28 05:07:26,044 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:07:26,044 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:07:26,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:07:26,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:07:26,098 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:07:26,411 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 54 treesize of output 30 [2024-11-28 05:07:26,482 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:26,482 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:07:28,451 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 225 treesize of output 207 [2024-11-28 05:07:28,522 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:07:28,523 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 260 treesize of output 290 [2024-11-28 05:07:59,231 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 294 treesize of output 264 [2024-11-28 05:07:59,250 INFO L349 Elim1Store]: treesize reduction 80, result has 1.2 percent of original size [2024-11-28 05:07:59,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 387 treesize of output 1 [2024-11-28 05:07:59,293 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:07:59,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2086125386] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:07:59,294 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:07:59,294 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 20 [2024-11-28 05:07:59,294 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [648911966] [2024-11-28 05:07:59,294 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:07:59,295 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:07:59,295 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:07:59,295 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:07:59,296 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:07:59,490 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-28 05:07:59,491 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 64 places, 91 transitions, 543 flow. Second operand has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:07:59,491 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:07:59,491 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-28 05:07:59,491 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:08:02,183 INFO L124 PetriNetUnfolderBase]: 2050/3323 cut-off events. [2024-11-28 05:08:02,183 INFO L125 PetriNetUnfolderBase]: For 4736/4736 co-relation queries the response was YES. [2024-11-28 05:08:02,188 INFO L83 FinitePrefix]: Finished finitePrefix Result has 10790 conditions, 3323 events. 2050/3323 cut-off events. For 4736/4736 co-relation queries the response was YES. Maximal size of possible extension queue 171. Compared 17848 event pairs, 78 based on Foata normal form. 3/3322 useless extension candidates. Maximal degree in co-relation 10228. Up to 1815 conditions per place. [2024-11-28 05:08:02,199 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 193 selfloop transitions, 121 changer transitions 2/322 dead transitions. [2024-11-28 05:08:02,199 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 94 places, 322 transitions, 2167 flow [2024-11-28 05:08:02,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2024-11-28 05:08:02,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2024-11-28 05:08:02,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 474 transitions. [2024-11-28 05:08:02,203 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4633431085043988 [2024-11-28 05:08:02,203 INFO L175 Difference]: Start difference. First operand has 64 places, 91 transitions, 543 flow. Second operand 31 states and 474 transitions. [2024-11-28 05:08:02,203 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 94 places, 322 transitions, 2167 flow [2024-11-28 05:08:02,219 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 91 places, 322 transitions, 1959 flow, removed 77 selfloop flow, removed 3 redundant places. [2024-11-28 05:08:02,223 INFO L231 Difference]: Finished difference. Result has 105 places, 182 transitions, 1307 flow [2024-11-28 05:08:02,223 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=453, PETRI_DIFFERENCE_MINUEND_PLACES=61, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=91, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=45, PETRI_DIFFERENCE_SUBTRAHEND_STATES=31, PETRI_FLOW=1307, PETRI_PLACES=105, PETRI_TRANSITIONS=182} [2024-11-28 05:08:02,223 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 70 predicate places. [2024-11-28 05:08:02,224 INFO L471 AbstractCegarLoop]: Abstraction has has 105 places, 182 transitions, 1307 flow [2024-11-28 05:08:02,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 10.095238095238095) internal successors, (212), 21 states have internal predecessors, (212), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:02,224 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:02,224 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:02,233 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-28 05:08:02,428 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:02,428 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:02,429 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:02,429 INFO L85 PathProgramCache]: Analyzing trace with hash 1445894150, now seen corresponding path program 3 times [2024-11-28 05:08:02,429 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:02,429 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917557259] [2024-11-28 05:08:02,429 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:08:02,429 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:02,453 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:08:02,453 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:03,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:08:03,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917557259] [2024-11-28 05:08:03,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [917557259] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:03,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [751288070] [2024-11-28 05:08:03,105 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:08:03,105 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:03,105 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:03,109 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:03,112 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-28 05:08:03,194 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:08:03,194 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:03,195 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:08:03,198 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:03,247 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:08:03,509 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-28 05:08:03,583 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:03,583 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:05,684 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-28 05:08:05,734 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:08:05,734 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-28 05:08:11,729 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-28 05:08:11,743 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:08:11,743 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-28 05:08:12,096 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-28 05:08:12,115 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-28 05:08:12,115 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-28 05:08:12,200 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:12,200 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [751288070] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:12,201 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:12,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 8, 8] total 22 [2024-11-28 05:08:12,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188941710] [2024-11-28 05:08:12,201 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:12,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-28 05:08:12,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:12,202 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-28 05:08:12,202 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=411, Unknown=0, NotChecked=0, Total=506 [2024-11-28 05:08:12,441 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 33 [2024-11-28 05:08:12,442 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 105 places, 182 transitions, 1307 flow. Second operand has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:12,442 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:12,442 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 33 [2024-11-28 05:08:12,442 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:08:16,232 INFO L124 PetriNetUnfolderBase]: 3836/6207 cut-off events. [2024-11-28 05:08:16,232 INFO L125 PetriNetUnfolderBase]: For 16871/16883 co-relation queries the response was YES. [2024-11-28 05:08:16,255 INFO L83 FinitePrefix]: Finished finitePrefix Result has 23989 conditions, 6207 events. 3836/6207 cut-off events. For 16871/16883 co-relation queries the response was YES. Maximal size of possible extension queue 327. Compared 37764 event pairs, 265 based on Foata normal form. 14/6219 useless extension candidates. Maximal degree in co-relation 22851. Up to 2782 conditions per place. [2024-11-28 05:08:16,286 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 233 selfloop transitions, 247 changer transitions 2/488 dead transitions. [2024-11-28 05:08:16,286 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 138 places, 488 transitions, 4097 flow [2024-11-28 05:08:16,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2024-11-28 05:08:16,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2024-11-28 05:08:16,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 523 transitions. [2024-11-28 05:08:16,289 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4661319073083779 [2024-11-28 05:08:16,290 INFO L175 Difference]: Start difference. First operand has 105 places, 182 transitions, 1307 flow. Second operand 34 states and 523 transitions. [2024-11-28 05:08:16,290 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 138 places, 488 transitions, 4097 flow [2024-11-28 05:08:16,353 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 136 places, 488 transitions, 3910 flow, removed 91 selfloop flow, removed 2 redundant places. [2024-11-28 05:08:16,360 INFO L231 Difference]: Finished difference. Result has 148 places, 329 transitions, 3031 flow [2024-11-28 05:08:16,360 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=1222, PETRI_DIFFERENCE_MINUEND_PLACES=103, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=182, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=114, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=36, PETRI_DIFFERENCE_SUBTRAHEND_STATES=34, PETRI_FLOW=3031, PETRI_PLACES=148, PETRI_TRANSITIONS=329} [2024-11-28 05:08:16,361 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 113 predicate places. [2024-11-28 05:08:16,361 INFO L471 AbstractCegarLoop]: Abstraction has has 148 places, 329 transitions, 3031 flow [2024-11-28 05:08:16,362 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 23 states have (on average 9.826086956521738) internal successors, (226), 23 states have internal predecessors, (226), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:16,362 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:16,362 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:16,371 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-28 05:08:16,562 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:16,562 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:16,563 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:16,563 INFO L85 PathProgramCache]: Analyzing trace with hash -1443890016, now seen corresponding path program 4 times [2024-11-28 05:08:16,563 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:16,563 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1475569628] [2024-11-28 05:08:16,563 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:08:16,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:16,583 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:08:16,584 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:08:17,209 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:17,209 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1475569628] [2024-11-28 05:08:17,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1475569628] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:17,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1399766128] [2024-11-28 05:08:17,210 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:08:17,210 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:17,210 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:17,214 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:17,216 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-28 05:08:17,291 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:08:17,292 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:17,293 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-28 05:08:17,295 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:17,335 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:08:17,642 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-28 05:08:17,720 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:17,720 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:19,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-28 05:08:19,850 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:08:19,850 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-28 05:08:26,472 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-28 05:08:26,489 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:08:26,489 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-28 05:08:26,827 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-28 05:08:26,852 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-28 05:08:26,852 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-28 05:08:26,940 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:26,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1399766128] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:26,941 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:26,941 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2024-11-28 05:08:26,941 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1144812295] [2024-11-28 05:08:26,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:26,942 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-28 05:08:26,942 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:26,943 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-28 05:08:26,943 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=109, Invalid=491, Unknown=0, NotChecked=0, Total=600 [2024-11-28 05:08:27,153 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:08:27,154 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 148 places, 329 transitions, 3031 flow. Second operand has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:27,154 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:27,154 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:08:27,154 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:08:30,754 INFO L124 PetriNetUnfolderBase]: 5690/9096 cut-off events. [2024-11-28 05:08:30,755 INFO L125 PetriNetUnfolderBase]: For 34139/34169 co-relation queries the response was YES. [2024-11-28 05:08:30,796 INFO L83 FinitePrefix]: Finished finitePrefix Result has 38750 conditions, 9096 events. 5690/9096 cut-off events. For 34139/34169 co-relation queries the response was YES. Maximal size of possible extension queue 478. Compared 58482 event pairs, 1178 based on Foata normal form. 14/9106 useless extension candidates. Maximal degree in co-relation 37094. Up to 6655 conditions per place. [2024-11-28 05:08:30,843 INFO L140 encePairwiseOnDemand]: 20/33 looper letters, 337 selfloop transitions, 152 changer transitions 1/495 dead transitions. [2024-11-28 05:08:30,843 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 174 places, 495 transitions, 5106 flow [2024-11-28 05:08:30,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-28 05:08:30,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2024-11-28 05:08:30,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 370 transitions. [2024-11-28 05:08:30,847 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4152637485970819 [2024-11-28 05:08:30,847 INFO L175 Difference]: Start difference. First operand has 148 places, 329 transitions, 3031 flow. Second operand 27 states and 370 transitions. [2024-11-28 05:08:30,848 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 174 places, 495 transitions, 5106 flow [2024-11-28 05:08:31,085 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 162 places, 495 transitions, 4883 flow, removed 58 selfloop flow, removed 12 redundant places. [2024-11-28 05:08:31,096 INFO L231 Difference]: Finished difference. Result has 170 places, 396 transitions, 3931 flow [2024-11-28 05:08:31,096 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=2823, PETRI_DIFFERENCE_MINUEND_PLACES=136, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=329, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=93, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=220, PETRI_DIFFERENCE_SUBTRAHEND_STATES=27, PETRI_FLOW=3931, PETRI_PLACES=170, PETRI_TRANSITIONS=396} [2024-11-28 05:08:31,097 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 135 predicate places. [2024-11-28 05:08:31,100 INFO L471 AbstractCegarLoop]: Abstraction has has 170 places, 396 transitions, 3931 flow [2024-11-28 05:08:31,100 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 25 states have (on average 8.76) internal successors, (219), 25 states have internal predecessors, (219), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:31,101 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:31,101 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:31,113 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-28 05:08:31,301 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:31,301 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:31,302 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:31,302 INFO L85 PathProgramCache]: Analyzing trace with hash 1405024172, now seen corresponding path program 5 times [2024-11-28 05:08:31,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:31,302 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1155288052] [2024-11-28 05:08:31,302 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:08:31,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:31,321 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:08:31,322 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:32,218 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:32,218 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1155288052] [2024-11-28 05:08:32,218 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1155288052] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:32,218 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1213435747] [2024-11-28 05:08:32,219 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:08:32,219 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:32,219 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:32,221 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:32,224 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-28 05:08:32,305 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:08:32,305 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:32,307 INFO L256 TraceCheckSpWp]: Trace formula consists of 180 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-28 05:08:32,309 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:32,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-28 05:08:32,770 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 55 treesize of output 31 [2024-11-28 05:08:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:32,879 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:36,131 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 182 treesize of output 166 [2024-11-28 05:08:36,176 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-28 05:08:36,176 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 214 treesize of output 218 [2024-11-28 05:08:44,814 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 106 treesize of output 96 [2024-11-28 05:08:44,827 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-28 05:08:44,828 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 125 treesize of output 115 [2024-11-28 05:08:45,087 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 229 treesize of output 205 [2024-11-28 05:08:45,106 INFO L349 Elim1Store]: treesize reduction 48, result has 2.0 percent of original size [2024-11-28 05:08:45,107 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 311 treesize of output 1 [2024-11-28 05:08:45,181 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:08:45,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1213435747] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:08:45,182 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:08:45,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 9, 9] total 28 [2024-11-28 05:08:45,182 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895148638] [2024-11-28 05:08:45,182 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:08:45,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 29 states [2024-11-28 05:08:45,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:45,183 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2024-11-28 05:08:45,184 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=116, Invalid=696, Unknown=0, NotChecked=0, Total=812 [2024-11-28 05:08:45,363 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 05:08:45,363 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 170 places, 396 transitions, 3931 flow. Second operand has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:45,363 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:45,363 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 05:08:45,363 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:08:52,264 INFO L124 PetriNetUnfolderBase]: 9668/14013 cut-off events. [2024-11-28 05:08:52,265 INFO L125 PetriNetUnfolderBase]: For 57895/57895 co-relation queries the response was YES. [2024-11-28 05:08:52,332 INFO L83 FinitePrefix]: Finished finitePrefix Result has 62771 conditions, 14013 events. 9668/14013 cut-off events. For 57895/57895 co-relation queries the response was YES. Maximal size of possible extension queue 630. Compared 80476 event pairs, 1541 based on Foata normal form. 4/14014 useless extension candidates. Maximal degree in co-relation 60528. Up to 9479 conditions per place. [2024-11-28 05:08:52,393 INFO L140 encePairwiseOnDemand]: 19/33 looper letters, 438 selfloop transitions, 316 changer transitions 2/758 dead transitions. [2024-11-28 05:08:52,393 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 202 places, 758 transitions, 8408 flow [2024-11-28 05:08:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2024-11-28 05:08:52,394 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2024-11-28 05:08:52,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 441 transitions. [2024-11-28 05:08:52,395 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4049586776859504 [2024-11-28 05:08:52,396 INFO L175 Difference]: Start difference. First operand has 170 places, 396 transitions, 3931 flow. Second operand 33 states and 441 transitions. [2024-11-28 05:08:52,396 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 202 places, 758 transitions, 8408 flow [2024-11-28 05:08:52,831 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 196 places, 758 transitions, 8024 flow, removed 164 selfloop flow, removed 6 redundant places. [2024-11-28 05:08:52,839 INFO L231 Difference]: Finished difference. Result has 206 places, 595 transitions, 6808 flow [2024-11-28 05:08:52,839 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=3685, PETRI_DIFFERENCE_MINUEND_PLACES=164, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=396, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=130, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=173, PETRI_DIFFERENCE_SUBTRAHEND_STATES=33, PETRI_FLOW=6808, PETRI_PLACES=206, PETRI_TRANSITIONS=595} [2024-11-28 05:08:52,840 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 171 predicate places. [2024-11-28 05:08:52,840 INFO L471 AbstractCegarLoop]: Abstraction has has 206 places, 595 transitions, 6808 flow [2024-11-28 05:08:52,840 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 29 states, 29 states have (on average 7.586206896551724) internal successors, (220), 29 states have internal predecessors, (220), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:52,840 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:52,841 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:52,847 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-28 05:08:53,041 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:53,041 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:53,042 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:53,042 INFO L85 PathProgramCache]: Analyzing trace with hash -1144773116, now seen corresponding path program 6 times [2024-11-28 05:08:53,042 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:53,042 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1781422297] [2024-11-28 05:08:53,042 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:08:53,042 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:53,070 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-11-28 05:08:53,070 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:08:53,728 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-28 05:08:53,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:53,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1781422297] [2024-11-28 05:08:53,729 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1781422297] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:08:53,729 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:08:53,729 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-11-28 05:08:53,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [757686242] [2024-11-28 05:08:53,729 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:53,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-28 05:08:53,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:53,730 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-28 05:08:53,730 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2024-11-28 05:08:53,838 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:08:53,838 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 206 places, 595 transitions, 6808 flow. Second operand has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:53,838 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:53,838 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:08:53,839 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:08:56,228 INFO L124 PetriNetUnfolderBase]: 7423/11495 cut-off events. [2024-11-28 05:08:56,228 INFO L125 PetriNetUnfolderBase]: For 68915/69019 co-relation queries the response was YES. [2024-11-28 05:08:56,293 INFO L83 FinitePrefix]: Finished finitePrefix Result has 58882 conditions, 11495 events. 7423/11495 cut-off events. For 68915/69019 co-relation queries the response was YES. Maximal size of possible extension queue 582. Compared 72344 event pairs, 1232 based on Foata normal form. 11/11502 useless extension candidates. Maximal degree in co-relation 58106. Up to 9462 conditions per place. [2024-11-28 05:08:56,328 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 533 selfloop transitions, 147 changer transitions 1/686 dead transitions. [2024-11-28 05:08:56,329 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 215 places, 686 transitions, 8967 flow [2024-11-28 05:08:56,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-28 05:08:56,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-11-28 05:08:56,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 163 transitions. [2024-11-28 05:08:56,330 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49393939393939396 [2024-11-28 05:08:56,330 INFO L175 Difference]: Start difference. First operand has 206 places, 595 transitions, 6808 flow. Second operand 10 states and 163 transitions. [2024-11-28 05:08:56,330 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 215 places, 686 transitions, 8967 flow [2024-11-28 05:08:56,697 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 209 places, 686 transitions, 8549 flow, removed 187 selfloop flow, removed 6 redundant places. [2024-11-28 05:08:56,704 INFO L231 Difference]: Finished difference. Result has 213 places, 633 transitions, 7325 flow [2024-11-28 05:08:56,704 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6408, PETRI_DIFFERENCE_MINUEND_PLACES=200, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=595, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=112, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=469, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=7325, PETRI_PLACES=213, PETRI_TRANSITIONS=633} [2024-11-28 05:08:56,705 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 178 predicate places. [2024-11-28 05:08:56,705 INFO L471 AbstractCegarLoop]: Abstraction has has 213 places, 633 transitions, 7325 flow [2024-11-28 05:08:56,705 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.4) internal successors, (84), 10 states have internal predecessors, (84), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:56,705 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:08:56,705 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-28 05:08:56,705 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-28 05:08:56,706 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:08:56,706 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:08:56,706 INFO L85 PathProgramCache]: Analyzing trace with hash -1641640998, now seen corresponding path program 7 times [2024-11-28 05:08:56,706 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:08:56,706 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [69173693] [2024-11-28 05:08:56,706 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:08:56,706 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:08:56,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:56,818 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:08:56,818 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:08:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [69173693] [2024-11-28 05:08:56,818 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [69173693] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:56,818 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [327778507] [2024-11-28 05:08:56,819 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:08:56,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:08:56,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:08:56,822 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:08:56,824 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-28 05:08:56,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:08:56,914 INFO L256 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:08:56,916 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:08:57,015 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:08:57,015 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:08:57,103 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:08:57,103 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [327778507] provided 1 perfect and 1 imperfect interpolant sequences [2024-11-28 05:08:57,103 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-11-28 05:08:57,103 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6, 6] total 13 [2024-11-28 05:08:57,103 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1095497742] [2024-11-28 05:08:57,103 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:08:57,104 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-28 05:08:57,104 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:08:57,104 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-28 05:08:57,105 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:08:57,116 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:08:57,117 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 213 places, 633 transitions, 7325 flow. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:08:57,117 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:08:57,117 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:08:57,117 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:00,100 INFO L124 PetriNetUnfolderBase]: 8354/12822 cut-off events. [2024-11-28 05:09:00,100 INFO L125 PetriNetUnfolderBase]: For 94247/94576 co-relation queries the response was YES. [2024-11-28 05:09:00,173 INFO L83 FinitePrefix]: Finished finitePrefix Result has 67899 conditions, 12822 events. 8354/12822 cut-off events. For 94247/94576 co-relation queries the response was YES. Maximal size of possible extension queue 667. Compared 82063 event pairs, 1668 based on Foata normal form. 321/13136 useless extension candidates. Maximal degree in co-relation 67802. Up to 4284 conditions per place. [2024-11-28 05:09:00,216 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 686 selfloop transitions, 79 changer transitions 0/770 dead transitions. [2024-11-28 05:09:00,216 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 770 transitions, 10224 flow [2024-11-28 05:09:00,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-28 05:09:00,219 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-11-28 05:09:00,219 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 144 transitions. [2024-11-28 05:09:00,219 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5454545454545454 [2024-11-28 05:09:00,219 INFO L175 Difference]: Start difference. First operand has 213 places, 633 transitions, 7325 flow. Second operand 8 states and 144 transitions. [2024-11-28 05:09:00,219 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 770 transitions, 10224 flow [2024-11-28 05:09:00,630 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 215 places, 770 transitions, 10092 flow, removed 26 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:00,638 INFO L231 Difference]: Finished difference. Result has 218 places, 626 transitions, 7314 flow [2024-11-28 05:09:00,639 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=6938, PETRI_DIFFERENCE_MINUEND_PLACES=208, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=615, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=69, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=543, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=7314, PETRI_PLACES=218, PETRI_TRANSITIONS=626} [2024-11-28 05:09:00,639 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 183 predicate places. [2024-11-28 05:09:00,639 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 626 transitions, 7314 flow [2024-11-28 05:09:00,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 7 states have internal predecessors, (67), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:00,640 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:00,640 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 05:09:00,646 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:00,840 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:00,841 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:00,841 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:00,841 INFO L85 PathProgramCache]: Analyzing trace with hash -1105901977, now seen corresponding path program 8 times [2024-11-28 05:09:00,841 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:00,842 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1923884735] [2024-11-28 05:09:00,842 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:00,842 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:00,862 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:00,863 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:00,976 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:00,977 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1923884735] [2024-11-28 05:09:00,977 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1923884735] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:00,977 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [709611562] [2024-11-28 05:09:00,977 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:00,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:00,978 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:00,980 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:00,984 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-28 05:09:01,071 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:01,071 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:01,072 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:09:01,074 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:01,226 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:01,226 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:01,332 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:01,332 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [709611562] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:01,332 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:01,332 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 16 [2024-11-28 05:09:01,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1256068861] [2024-11-28 05:09:01,332 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:01,333 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-28 05:09:01,333 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:01,333 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-28 05:09:01,333 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2024-11-28 05:09:01,379 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 4 out of 33 [2024-11-28 05:09:01,380 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 626 transitions, 7314 flow. Second operand has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:01,380 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:01,380 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 4 of 33 [2024-11-28 05:09:01,380 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:06,826 INFO L124 PetriNetUnfolderBase]: 18053/26097 cut-off events. [2024-11-28 05:09:06,826 INFO L125 PetriNetUnfolderBase]: For 218017/218017 co-relation queries the response was YES. [2024-11-28 05:09:06,997 INFO L83 FinitePrefix]: Finished finitePrefix Result has 139729 conditions, 26097 events. 18053/26097 cut-off events. For 218017/218017 co-relation queries the response was YES. Maximal size of possible extension queue 1149. Compared 163861 event pairs, 2632 based on Foata normal form. 28/26125 useless extension candidates. Maximal degree in co-relation 137476. Up to 6498 conditions per place. [2024-11-28 05:09:07,081 INFO L140 encePairwiseOnDemand]: 22/33 looper letters, 1642 selfloop transitions, 292 changer transitions 0/1935 dead transitions. [2024-11-28 05:09:07,081 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 236 places, 1935 transitions, 26765 flow [2024-11-28 05:09:07,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-28 05:09:07,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2024-11-28 05:09:07,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 261 transitions. [2024-11-28 05:09:07,083 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.41626794258373206 [2024-11-28 05:09:07,083 INFO L175 Difference]: Start difference. First operand has 218 places, 626 transitions, 7314 flow. Second operand 19 states and 261 transitions. [2024-11-28 05:09:07,083 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 236 places, 1935 transitions, 26765 flow [2024-11-28 05:09:08,518 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 234 places, 1935 transitions, 26728 flow, removed 16 selfloop flow, removed 2 redundant places. [2024-11-28 05:09:08,534 INFO L231 Difference]: Finished difference. Result has 248 places, 845 transitions, 11370 flow [2024-11-28 05:09:08,534 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7305, PETRI_DIFFERENCE_MINUEND_PLACES=216, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=626, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=504, PETRI_DIFFERENCE_SUBTRAHEND_STATES=19, PETRI_FLOW=11370, PETRI_PLACES=248, PETRI_TRANSITIONS=845} [2024-11-28 05:09:08,535 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 213 predicate places. [2024-11-28 05:09:08,535 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 845 transitions, 11370 flow [2024-11-28 05:09:08,535 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 7.125) internal successors, (114), 16 states have internal predecessors, (114), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:08,535 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:08,535 INFO L206 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] [2024-11-28 05:09:08,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-28 05:09:08,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:08,736 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:08,736 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:08,737 INFO L85 PathProgramCache]: Analyzing trace with hash -2052551018, now seen corresponding path program 1 times [2024-11-28 05:09:08,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:08,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1899865704] [2024-11-28 05:09:08,737 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:08,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:08,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:08,951 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:08,952 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1899865704] [2024-11-28 05:09:08,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1899865704] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:08,952 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883596665] [2024-11-28 05:09:08,952 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-28 05:09:08,952 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:08,952 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:08,954 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:08,957 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-28 05:09:09,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:09,045 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:09:09,047 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:09,130 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:09,130 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:09,213 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:09,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883596665] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:09,214 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:09,214 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 12 [2024-11-28 05:09:09,214 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1555505195] [2024-11-28 05:09:09,214 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:09,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-28 05:09:09,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:09,215 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-28 05:09:09,215 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=114, Unknown=0, NotChecked=0, Total=156 [2024-11-28 05:09:09,262 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:09:09,263 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 845 transitions, 11370 flow. Second operand has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:09,263 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:09,263 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:09:09,263 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:11,427 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [18#L58-6true, Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1)))), Black: 378#(and (<= |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 |ULTIMATE.start_create_fresh_int_array_~size#1|) (= |ULTIMATE.start_create_fresh_int_array_~arr~0#1.offset| 0)), Black: 382#(and (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 1) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 380#(and (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (<= ~N~0 1) (= ~M~0 0)), 864#true, Black: 344#(and (or (and (or (and (<= ~max3~0 ~max2~0) (= ~max2~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (<= (+ ~max2~0 1) ~max3~0) (= ~max3~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)))) (or (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1))) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))))), Black: 1279#(and (or (and (= ~A~0.offset 0) (= ~max1~0 0)) (< 0 ~M~0)) (<= 0 ~M~0) (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= 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05:09:11,428 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-11-28 05:09:11,428 INFO L297 olderBase$Statistics]: existing Event has 21 ancestors and is cut-off event [2024-11-28 05:09:11,703 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [1708#(and (<= ~M~0 0) (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0)), Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1)))), Black: 378#(and (<= 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olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,703 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,703 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,703 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,705 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1))) (or (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) 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635#true]) [2024-11-28 05:09:11,705 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,705 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,705 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,705 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,706 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, 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Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 635#true]) [2024-11-28 05:09:11,706 INFO L294 olderBase$Statistics]: this new event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,707 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,707 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,707 INFO L297 olderBase$Statistics]: existing Event has 22 ancestors and is cut-off event [2024-11-28 05:09:11,938 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [1708#(and (<= ~M~0 0) (<= (+ thread3Thread1of1ForFork1_~i~2 1) ~N~0)), Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (< (select 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416#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0)), Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 1087#true, 635#true]) [2024-11-28 05:09:11,938 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,938 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,939 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,939 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,941 INFO L292 olderBase$Statistics]: inserting event number 4 for the transition-marking pair ([424] L70-2-->L75: Formula: (let ((.cse0 (select (select |v_#memory_int#1_53| v_~A~0.base_75) (+ v_~A~0.offset_75 (* v_thread3Thread1of1ForFork1_~i~2_7 4))))) (or (and (= v_~max3~0_33 v_~max3~0_32) (= |v_thread3Thread1of1ForFork1_#t~mem8_2| |v_thread3Thread1of1ForFork1_#t~mem8_1|) (<= .cse0 v_~max3~0_33)) (and (< v_~max3~0_33 .cse0) (= v_~max3~0_32 .cse0)))) InVars {~A~0.base=v_~A~0.base_75, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_1|, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, ~A~0.offset=v_~A~0.offset_75, #memory_int#1=|v_#memory_int#1_53|, ~max3~0=v_~max3~0_33} OutVars{~A~0.base=v_~A~0.base_75, ~A~0.offset=v_~A~0.offset_75, ~max3~0=v_~max3~0_32, thread3Thread1of1ForFork1_~i~2=v_thread3Thread1of1ForFork1_~i~2_7, thread3Thread1of1ForFork1_#t~mem8=|v_thread3Thread1of1ForFork1_#t~mem8_2|, #memory_int#1=|v_#memory_int#1_53|, thread3Thread1of1ForFork1_#t~mem7=|v_thread3Thread1of1ForFork1_#t~mem7_1|} AuxVars[] AssignedVars[~max3~0, thread3Thread1of1ForFork1_#t~mem8, thread3Thread1of1ForFork1_#t~mem7][330], [Black: 406#(and (or (and (= ~max3~0 ~max1~0) (<= 1 ~max3~0)) (and (= ~max3~0 0) (= ~max1~0 0))) (= ~max2~0 0) (or (< ~max1~0 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~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (select (select |#memory_int#1| ~A~0.base) ~A~0.offset))) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))) (< (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) (+ ~max1~0 1))) (or (< ~max1~0 (select (select |#memory_int#1| ~A~0.base) ~A~0.offset)) (and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))))), Black: 594#(and (or (and (= ~max3~0 ~max1~0) (<= (+ ~max2~0 1) ~max3~0)) (< ~max3~0 (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (and (= ~max2~0 ~max1~0) (<= ~max3~0 ~max2~0))) (<= (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) ~max1~0) (<= (select (select |#memory_int#1| ~A~0.base) (+ (* thread1Thread1of1ForFork2_~i~0 4) ~A~0.offset)) ~max1~0) (or (and (<= (+ ~max2~0 1) (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4)))) (= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max1~0)) (and (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max2~0) (= ~max2~0 ~max1~0)) (< (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) (+ ~max3~0 1)))), Black: 586#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 588#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0) (= ~M~0 0)), Black: 610#(and (= ~max3~0 ~max1~0) (<= (select (select |#memory_int#1| ~A~0.base) ~A~0.offset) ~max1~0) (= ~max2~0 0) (<= (select (select |#memory_int#1| ~A~0.base) (+ ~A~0.offset (* ~M~0 4))) ~max3~0) (or (= ~max1~0 0) (< 0 ~max1~0))), Black: 420#(and (or (< 0 (select (select |#memory_int#1| ~A~0.base) 0)) (= ~max1~0 0)) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (or (= ~max1~0 (select (select |#memory_int#1| ~A~0.base) 0)) (< (select (select |#memory_int#1| ~A~0.base) 0) 1)) (= ~M~0 0)), Black: 590#(and (or (< ~N~0 2) (< (+ |ULTIMATE.start_create_fresh_int_array_~i~3#1| 1) |ULTIMATE.start_create_fresh_int_array_~size#1|)) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0) (= thread1Thread1of1ForFork2_~i~0 0) (= ~M~0 0)), Black: 416#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= thread2Thread1of1ForFork0_~i~1 0) (= ~max2~0 0) (= ~max1~0 0)), 1087#true, Black: 415#(and (<= 0 ~M~0) (= ~A~0.offset 0) (= ~max3~0 0) (= ~max2~0 0) (= ~max1~0 0)), 635#true]) [2024-11-28 05:09:11,941 INFO L294 olderBase$Statistics]: this new event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,941 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,941 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:11,941 INFO L297 olderBase$Statistics]: existing Event has 23 ancestors and is cut-off event [2024-11-28 05:09:12,549 INFO L124 PetriNetUnfolderBase]: 7988/12695 cut-off events. [2024-11-28 05:09:12,550 INFO L125 PetriNetUnfolderBase]: For 180144/180948 co-relation queries the response was YES. [2024-11-28 05:09:12,656 INFO L83 FinitePrefix]: Finished finitePrefix Result has 85199 conditions, 12695 events. 7988/12695 cut-off events. For 180144/180948 co-relation queries the response was YES. Maximal size of possible extension queue 773. Compared 86845 event pairs, 2712 based on Foata normal form. 785/13309 useless extension candidates. Maximal degree in co-relation 85066. Up to 5793 conditions per place. [2024-11-28 05:09:12,701 INFO L140 encePairwiseOnDemand]: 27/33 looper letters, 717 selfloop transitions, 24 changer transitions 0/792 dead transitions. [2024-11-28 05:09:12,701 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 792 transitions, 12734 flow [2024-11-28 05:09:12,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-28 05:09:12,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-11-28 05:09:12,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 98 transitions. [2024-11-28 05:09:12,702 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.494949494949495 [2024-11-28 05:09:12,702 INFO L175 Difference]: Start difference. First operand has 248 places, 845 transitions, 11370 flow. Second operand 6 states and 98 transitions. [2024-11-28 05:09:12,702 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 792 transitions, 12734 flow [2024-11-28 05:09:14,293 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 232 places, 792 transitions, 12294 flow, removed 190 selfloop flow, removed 8 redundant places. [2024-11-28 05:09:14,302 INFO L231 Difference]: Finished difference. Result has 234 places, 626 transitions, 8770 flow [2024-11-28 05:09:14,303 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8625, PETRI_DIFFERENCE_MINUEND_PLACES=227, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=622, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=20, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=598, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=8770, PETRI_PLACES=234, PETRI_TRANSITIONS=626} [2024-11-28 05:09:14,303 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 199 predicate places. [2024-11-28 05:09:14,303 INFO L471 AbstractCegarLoop]: Abstraction has has 234 places, 626 transitions, 8770 flow [2024-11-28 05:09:14,303 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 9.538461538461538) internal successors, (124), 13 states have internal predecessors, (124), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:14,304 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:14,304 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 05:09:14,311 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-28 05:09:14,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2024-11-28 05:09:14,505 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:14,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:14,506 INFO L85 PathProgramCache]: Analyzing trace with hash -750348223, now seen corresponding path program 9 times [2024-11-28 05:09:14,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:14,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [721233475] [2024-11-28 05:09:14,506 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:09:14,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:14,529 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:09:14,529 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:14,619 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:14,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [721233475] [2024-11-28 05:09:14,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [721233475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:14,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1284756248] [2024-11-28 05:09:14,619 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-28 05:09:14,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:14,620 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:14,622 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:14,625 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-28 05:09:14,705 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2024-11-28 05:09:14,706 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:14,707 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-28 05:09:14,708 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:14,801 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:14,805 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:14,881 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:14,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1284756248] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:14,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:14,882 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 05:09:14,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571281489] [2024-11-28 05:09:14,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:14,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:09:14,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:14,883 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:09:14,883 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=56, Invalid=126, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:09:14,919 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:09:14,919 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 234 places, 626 transitions, 8770 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:14,919 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:14,919 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:09:14,919 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:17,283 INFO L124 PetriNetUnfolderBase]: 7025/11144 cut-off events. [2024-11-28 05:09:17,283 INFO L125 PetriNetUnfolderBase]: For 159813/160186 co-relation queries the response was YES. [2024-11-28 05:09:17,366 INFO L83 FinitePrefix]: Finished finitePrefix Result has 74142 conditions, 11144 events. 7025/11144 cut-off events. For 159813/160186 co-relation queries the response was YES. Maximal size of possible extension queue 636. Compared 73343 event pairs, 2230 based on Foata normal form. 483/11590 useless extension candidates. Maximal degree in co-relation 72099. Up to 5794 conditions per place. [2024-11-28 05:09:17,422 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 556 selfloop transitions, 78 changer transitions 0/658 dead transitions. [2024-11-28 05:09:17,423 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 658 transitions, 10375 flow [2024-11-28 05:09:17,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:17,423 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:17,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 115 transitions. [2024-11-28 05:09:17,424 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.49783549783549785 [2024-11-28 05:09:17,424 INFO L175 Difference]: Start difference. First operand has 234 places, 626 transitions, 8770 flow. Second operand 7 states and 115 transitions. [2024-11-28 05:09:17,424 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 658 transitions, 10375 flow [2024-11-28 05:09:18,865 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 237 places, 658 transitions, 10332 flow, removed 18 selfloop flow, removed 3 redundant places. [2024-11-28 05:09:18,874 INFO L231 Difference]: Finished difference. Result has 238 places, 577 transitions, 8301 flow [2024-11-28 05:09:18,874 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8062, PETRI_DIFFERENCE_MINUEND_PLACES=231, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=576, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=77, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=498, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=8301, PETRI_PLACES=238, PETRI_TRANSITIONS=577} [2024-11-28 05:09:18,874 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 203 predicate places. [2024-11-28 05:09:18,875 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 577 transitions, 8301 flow [2024-11-28 05:09:18,875 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:18,875 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:18,875 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 05:09:18,881 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-28 05:09:19,075 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-11-28 05:09:19,076 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:19,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:19,076 INFO L85 PathProgramCache]: Analyzing trace with hash -625103703, now seen corresponding path program 10 times [2024-11-28 05:09:19,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:19,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1758440323] [2024-11-28 05:09:19,076 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-28 05:09:19,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:19,088 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-28 05:09:19,088 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:19,187 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:19,188 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:19,188 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1758440323] [2024-11-28 05:09:19,188 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1758440323] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-28 05:09:19,188 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-28 05:09:19,188 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-28 05:09:19,188 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1190768880] [2024-11-28 05:09:19,188 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-28 05:09:19,189 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-28 05:09:19,189 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:19,189 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-28 05:09:19,189 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-28 05:09:19,221 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 05:09:19,221 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 577 transitions, 8301 flow. Second operand has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:19,221 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:19,221 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 05:09:19,222 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:22,711 INFO L124 PetriNetUnfolderBase]: 10941/16411 cut-off events. [2024-11-28 05:09:22,711 INFO L125 PetriNetUnfolderBase]: For 208436/208728 co-relation queries the response was YES. [2024-11-28 05:09:22,805 INFO L83 FinitePrefix]: Finished finitePrefix Result has 108353 conditions, 16411 events. 10941/16411 cut-off events. For 208436/208728 co-relation queries the response was YES. Maximal size of possible extension queue 785. Compared 102980 event pairs, 1756 based on Foata normal form. 20/16430 useless extension candidates. Maximal degree in co-relation 105764. Up to 4644 conditions per place. [2024-11-28 05:09:22,849 INFO L140 encePairwiseOnDemand]: 25/33 looper letters, 718 selfloop transitions, 170 changer transitions 20/910 dead transitions. [2024-11-28 05:09:22,849 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 246 places, 910 transitions, 14306 flow [2024-11-28 05:09:22,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-28 05:09:22,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-11-28 05:09:22,850 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 148 transitions. [2024-11-28 05:09:22,851 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4983164983164983 [2024-11-28 05:09:22,851 INFO L175 Difference]: Start difference. First operand has 238 places, 577 transitions, 8301 flow. Second operand 9 states and 148 transitions. [2024-11-28 05:09:22,851 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 246 places, 910 transitions, 14306 flow [2024-11-28 05:09:24,964 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 241 places, 910 transitions, 14154 flow, removed 23 selfloop flow, removed 5 redundant places. [2024-11-28 05:09:24,973 INFO L231 Difference]: Finished difference. Result has 245 places, 609 transitions, 9360 flow [2024-11-28 05:09:24,973 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8182, PETRI_DIFFERENCE_MINUEND_PLACES=233, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=577, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=143, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=429, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=9360, PETRI_PLACES=245, PETRI_TRANSITIONS=609} [2024-11-28 05:09:24,974 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 210 predicate places. [2024-11-28 05:09:24,974 INFO L471 AbstractCegarLoop]: Abstraction has has 245 places, 609 transitions, 9360 flow [2024-11-28 05:09:24,974 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.5) internal successors, (68), 8 states have internal predecessors, (68), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:24,974 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:24,974 INFO L206 CegarLoopForPetriNet]: trace histogram [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] [2024-11-28 05:09:24,974 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-28 05:09:24,974 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:24,975 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash -2049567537, now seen corresponding path program 11 times [2024-11-28 05:09:24,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:24,975 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557993796] [2024-11-28 05:09:24,975 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:24,975 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:24,985 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:24,986 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:25,066 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:25,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557993796] [2024-11-28 05:09:25,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1557993796] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:25,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1195828572] [2024-11-28 05:09:25,066 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-28 05:09:25,067 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:25,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:25,069 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:25,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-28 05:09:25,153 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:25,153 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:25,154 INFO L256 TraceCheckSpWp]: Trace formula consists of 184 conjuncts, 9 conjuncts are in the unsatisfiable core [2024-11-28 05:09:25,156 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:25,327 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:25,327 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:25,406 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-28 05:09:25,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1195828572] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:25,406 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:25,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 13 [2024-11-28 05:09:25,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720329227] [2024-11-28 05:09:25,407 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:25,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-28 05:09:25,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:25,407 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-28 05:09:25,407 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=133, Unknown=0, NotChecked=0, Total=182 [2024-11-28 05:09:25,463 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 6 out of 33 [2024-11-28 05:09:25,463 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 245 places, 609 transitions, 9360 flow. Second operand has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:25,463 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:25,463 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 6 of 33 [2024-11-28 05:09:25,463 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:27,897 INFO L124 PetriNetUnfolderBase]: 7765/12127 cut-off events. [2024-11-28 05:09:27,898 INFO L125 PetriNetUnfolderBase]: For 173800/174331 co-relation queries the response was YES. [2024-11-28 05:09:27,964 INFO L83 FinitePrefix]: Finished finitePrefix Result has 83655 conditions, 12127 events. 7765/12127 cut-off events. For 173800/174331 co-relation queries the response was YES. Maximal size of possible extension queue 639. Compared 78846 event pairs, 2566 based on Foata normal form. 622/12682 useless extension candidates. Maximal degree in co-relation 82845. Up to 8263 conditions per place. [2024-11-28 05:09:28,003 INFO L140 encePairwiseOnDemand]: 26/33 looper letters, 340 selfloop transitions, 3 changer transitions 253/613 dead transitions. [2024-11-28 05:09:28,003 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 250 places, 613 transitions, 10345 flow [2024-11-28 05:09:28,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-28 05:09:28,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-11-28 05:09:28,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 110 transitions. [2024-11-28 05:09:28,004 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47619047619047616 [2024-11-28 05:09:28,004 INFO L175 Difference]: Start difference. First operand has 245 places, 609 transitions, 9360 flow. Second operand 7 states and 110 transitions. [2024-11-28 05:09:28,004 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 250 places, 613 transitions, 10345 flow [2024-11-28 05:09:29,953 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 247 places, 613 transitions, 10161 flow, removed 58 selfloop flow, removed 3 redundant places. [2024-11-28 05:09:29,960 INFO L231 Difference]: Finished difference. Result has 248 places, 360 transitions, 4998 flow [2024-11-28 05:09:29,961 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=8388, PETRI_DIFFERENCE_MINUEND_PLACES=241, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=561, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=3, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=558, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=4998, PETRI_PLACES=248, PETRI_TRANSITIONS=360} [2024-11-28 05:09:29,961 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 213 predicate places. [2024-11-28 05:09:29,961 INFO L471 AbstractCegarLoop]: Abstraction has has 248 places, 360 transitions, 4998 flow [2024-11-28 05:09:29,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 9.714285714285714) internal successors, (136), 14 states have internal predecessors, (136), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:29,961 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:29,961 INFO L206 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] [2024-11-28 05:09:29,971 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-28 05:09:30,165 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-11-28 05:09:30,165 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:30,166 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:30,166 INFO L85 PathProgramCache]: Analyzing trace with hash -1489884979, now seen corresponding path program 12 times [2024-11-28 05:09:30,166 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:30,166 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1498514525] [2024-11-28 05:09:30,166 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:09:30,166 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:30,321 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:09:30,321 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:30,446 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:30,446 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1498514525] [2024-11-28 05:09:30,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1498514525] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:30,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1057170340] [2024-11-28 05:09:30,447 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-28 05:09:30,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:30,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:30,449 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:30,453 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-28 05:09:30,535 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 2 check-sat command(s) [2024-11-28 05:09:30,535 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:30,536 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:30,537 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:30,688 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:30,688 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:30,828 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:30,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1057170340] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:30,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:30,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 19 [2024-11-28 05:09:30,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1946887896] [2024-11-28 05:09:30,829 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:30,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-28 05:09:30,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:30,830 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-28 05:09:30,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=85, Invalid=295, Unknown=0, NotChecked=0, Total=380 [2024-11-28 05:09:30,888 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 05:09:30,889 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 248 places, 360 transitions, 4998 flow. Second operand has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:30,889 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:30,889 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 05:09:30,889 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:37,213 INFO L124 PetriNetUnfolderBase]: 22839/32543 cut-off events. [2024-11-28 05:09:37,214 INFO L125 PetriNetUnfolderBase]: For 460056/461400 co-relation queries the response was YES. [2024-11-28 05:09:37,438 INFO L83 FinitePrefix]: Finished finitePrefix Result has 226616 conditions, 32543 events. 22839/32543 cut-off events. For 460056/461400 co-relation queries the response was YES. Maximal size of possible extension queue 1086. Compared 202210 event pairs, 901 based on Foata normal form. 1371/33870 useless extension candidates. Maximal degree in co-relation 226540. Up to 14083 conditions per place. [2024-11-28 05:09:37,556 INFO L140 encePairwiseOnDemand]: 21/33 looper letters, 1093 selfloop transitions, 271 changer transitions 0/1380 dead transitions. [2024-11-28 05:09:37,556 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 232 places, 1380 transitions, 21985 flow [2024-11-28 05:09:37,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 37 states. [2024-11-28 05:09:37,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2024-11-28 05:09:37,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 573 transitions. [2024-11-28 05:09:37,558 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4692874692874693 [2024-11-28 05:09:37,558 INFO L175 Difference]: Start difference. First operand has 248 places, 360 transitions, 4998 flow. Second operand 37 states and 573 transitions. [2024-11-28 05:09:37,558 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 232 places, 1380 transitions, 21985 flow [2024-11-28 05:09:41,304 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 210 places, 1380 transitions, 20632 flow, removed 529 selfloop flow, removed 22 redundant places. [2024-11-28 05:09:41,318 INFO L231 Difference]: Finished difference. Result has 228 places, 561 transitions, 7620 flow [2024-11-28 05:09:41,319 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=4594, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=360, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=95, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=246, PETRI_DIFFERENCE_SUBTRAHEND_STATES=37, PETRI_FLOW=7620, PETRI_PLACES=228, PETRI_TRANSITIONS=561} [2024-11-28 05:09:41,319 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 193 predicate places. [2024-11-28 05:09:41,319 INFO L471 AbstractCegarLoop]: Abstraction has has 228 places, 561 transitions, 7620 flow [2024-11-28 05:09:41,320 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 7.3) internal successors, (146), 20 states have internal predecessors, (146), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:41,320 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:41,320 INFO L206 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] [2024-11-28 05:09:41,329 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Ended with exit code 0 [2024-11-28 05:09:41,524 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-28 05:09:41,524 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:41,525 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:41,525 INFO L85 PathProgramCache]: Analyzing trace with hash -1315219553, now seen corresponding path program 13 times [2024-11-28 05:09:41,525 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:41,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097840555] [2024-11-28 05:09:41,525 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:09:41,525 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:41,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:41,700 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:41,700 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097840555] [2024-11-28 05:09:41,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097840555] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:41,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903405231] [2024-11-28 05:09:41,701 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-28 05:09:41,701 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:41,701 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:41,702 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:41,704 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-28 05:09:41,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-28 05:09:41,796 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:41,797 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:42,047 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:42,047 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:42,139 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:42,140 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903405231] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:42,140 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:42,140 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 17 [2024-11-28 05:09:42,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543652580] [2024-11-28 05:09:42,140 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:42,140 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-28 05:09:42,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:42,141 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-28 05:09:42,141 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2024-11-28 05:09:42,183 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 05:09:42,183 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 228 places, 561 transitions, 7620 flow. Second operand has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:42,183 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:42,183 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 05:09:42,183 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-11-28 05:09:48,229 INFO L124 PetriNetUnfolderBase]: 23167/33136 cut-off events. [2024-11-28 05:09:48,229 INFO L125 PetriNetUnfolderBase]: For 504422/505768 co-relation queries the response was YES. [2024-11-28 05:09:48,467 INFO L83 FinitePrefix]: Finished finitePrefix Result has 245900 conditions, 33136 events. 23167/33136 cut-off events. For 504422/505768 co-relation queries the response was YES. Maximal size of possible extension queue 1131. Compared 208516 event pairs, 2114 based on Foata normal form. 1415/34514 useless extension candidates. Maximal degree in co-relation 245823. Up to 14445 conditions per place. [2024-11-28 05:09:48,618 INFO L140 encePairwiseOnDemand]: 23/33 looper letters, 612 selfloop transitions, 226 changer transitions 0/854 dead transitions. [2024-11-28 05:09:48,618 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 240 places, 854 transitions, 13242 flow [2024-11-28 05:09:48,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-28 05:09:48,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-11-28 05:09:48,619 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 177 transitions. [2024-11-28 05:09:48,620 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4125874125874126 [2024-11-28 05:09:48,620 INFO L175 Difference]: Start difference. First operand has 228 places, 561 transitions, 7620 flow. Second operand 13 states and 177 transitions. [2024-11-28 05:09:48,620 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 240 places, 854 transitions, 13242 flow [2024-11-28 05:09:53,215 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 236 places, 854 transitions, 12689 flow, removed 273 selfloop flow, removed 4 redundant places. [2024-11-28 05:09:53,225 INFO L231 Difference]: Finished difference. Result has 238 places, 580 transitions, 8095 flow [2024-11-28 05:09:53,226 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=33, PETRI_DIFFERENCE_MINUEND_FLOW=7105, PETRI_DIFFERENCE_MINUEND_PLACES=224, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=556, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=202, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=8095, PETRI_PLACES=238, PETRI_TRANSITIONS=580} [2024-11-28 05:09:53,226 INFO L279 CegarLoopForPetriNet]: 35 programPoint places, 203 predicate places. [2024-11-28 05:09:53,226 INFO L471 AbstractCegarLoop]: Abstraction has has 238 places, 580 transitions, 8095 flow [2024-11-28 05:09:53,226 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 7.5) internal successors, (135), 18 states have internal predecessors, (135), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:53,226 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-11-28 05:09:53,226 INFO L206 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] [2024-11-28 05:09:53,235 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-28 05:09:53,430 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable17 [2024-11-28 05:09:53,430 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, ULTIMATE.startErr1INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (and 1 more)] === [2024-11-28 05:09:53,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-28 05:09:53,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1590896285, now seen corresponding path program 14 times [2024-11-28 05:09:53,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-28 05:09:53,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1436578434] [2024-11-28 05:09:53,431 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:53,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-28 05:09:53,444 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:53,445 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:53,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:53,575 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-28 05:09:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1436578434] [2024-11-28 05:09:53,575 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1436578434] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-28 05:09:53,575 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395057578] [2024-11-28 05:09:53,575 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-28 05:09:53,575 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-28 05:09:53,576 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 [2024-11-28 05:09:53,577 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-28 05:09:53,580 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8f5ed12b-2fb5-454d-9dbd-ea900995a15f/bin/uautomizer-verify-aQ6SnzHsRB/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-28 05:09:53,660 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-28 05:09:53,660 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-28 05:09:53,661 INFO L256 TraceCheckSpWp]: Trace formula consists of 193 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-28 05:09:53,662 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-11-28 05:09:53,792 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:53,792 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-11-28 05:09:53,918 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 3 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-28 05:09:53,918 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395057578] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-28 05:09:53,918 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-28 05:09:53,918 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 20 [2024-11-28 05:09:53,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1322746945] [2024-11-28 05:09:53,918 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-28 05:09:53,919 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-28 05:09:53,919 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-28 05:09:53,919 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-28 05:09:53,919 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2024-11-28 05:09:53,963 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 5 out of 33 [2024-11-28 05:09:53,964 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 238 places, 580 transitions, 8095 flow. Second operand has 21 states, 21 states have (on average 7.142857142857143) internal successors, (150), 21 states have internal predecessors, (150), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-28 05:09:53,964 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-11-28 05:09:53,964 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 5 of 33 [2024-11-28 05:09:53,964 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand