./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i --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_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/plugins/org.eclipse.equinox.launcher_1.6.800.v20240513-1750.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1 --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 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 14:58:49,781 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 14:58:49,839 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 14:58:49,844 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 14:58:49,844 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 14:58:49,867 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 14:58:49,868 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 14:58:49,868 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 14:58:49,868 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 14:58:49,868 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 14:58:49,868 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 14:58:49,868 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 14:58:49,869 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 14:58:49,869 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 14:58:49,869 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 14:58:49,869 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 14:58:49,869 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 14:58:49,869 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 14:58:49,870 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 14:58:49,871 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:58:49,871 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 14:58:49,871 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:58:49,872 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 14:58:49,872 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 14:58:49,873 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 14:58:49,873 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 14:58:49,873 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 14:58:49,873 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 14:58:49,873 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_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1 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 -> 6aeaf730cbe4eb831d189bfd9925d1660c7714b9e685f389bc2495c0943d6472 [2024-12-02 14:58:50,096 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 14:58:50,104 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 14:58:50,106 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 14:58:50,107 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 14:58:50,108 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 14:58:50,109 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-12-02 14:58:52,770 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/data/5cd307dbf/b0a5f2de7af947fbb9a80162867dd084/FLAGf3ce0d61f [2024-12-02 14:58:53,039 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 14:58:53,039 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-12-02 14:58:53,052 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/data/5cd307dbf/b0a5f2de7af947fbb9a80162867dd084/FLAGf3ce0d61f [2024-12-02 14:58:53,356 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/data/5cd307dbf/b0a5f2de7af947fbb9a80162867dd084 [2024-12-02 14:58:53,359 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 14:58:53,360 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 14:58:53,361 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 14:58:53,361 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 14:58:53,364 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 14:58:53,365 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,365 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b9bb40e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53, skipping insertion in model container [2024-12-02 14:58:53,365 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,392 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 14:58:53,506 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_9365dfa1-3d08-4558-bb25-8de7376bdd95/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-12-02 14:58:53,610 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:58:53,622 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 14:58:53,630 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_9365dfa1-3d08-4558-bb25-8de7376bdd95/sv-benchmarks/c/goblint-regression/13-privatized_68-pfscan_protected_loop_minimal_interval_true.i[1115,1128] [2024-12-02 14:58:53,662 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 14:58:53,687 INFO L204 MainTranslator]: Completed translation [2024-12-02 14:58:53,687 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53 WrapperNode [2024-12-02 14:58:53,688 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 14:58:53,688 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 14:58:53,688 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 14:58:53,688 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 14:58:53,694 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,705 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,726 INFO L138 Inliner]: procedures = 165, calls = 34, calls flagged for inlining = 7, calls inlined = 7, statements flattened = 116 [2024-12-02 14:58:53,726 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 14:58:53,727 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 14:58:53,727 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 14:58:53,727 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 14:58:53,734 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,734 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,737 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,752 INFO L175 MemorySlicer]: Split 18 memory accesses to 2 slices as follows [2, 16]. 89 percent of accesses are in the largest equivalence class. The 8 initializations are split as follows [2, 6]. The 3 writes are split as follows [0, 3]. [2024-12-02 14:58:53,752 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,752 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,759 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,760 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,763 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,765 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,766 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,768 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 14:58:53,769 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 14:58:53,769 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 14:58:53,769 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 14:58:53,770 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (1/1) ... [2024-12-02 14:58:53,775 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 14:58:53,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:58:53,796 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 14:58:53,799 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 14:58:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-12-02 14:58:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-12-02 14:58:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure worker [2024-12-02 14:58:53,821 INFO L138 BoogieDeclarations]: Found implementation of procedure worker [2024-12-02 14:58:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-12-02 14:58:53,821 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexLock [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure #PthreadsMutexUnlock [2024-12-02 14:58:53,822 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 14:58:53,822 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 14:58:53,824 WARN L203 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to OneNontrivialStatement. [2024-12-02 14:58:53,938 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 14:58:53,939 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 14:58:54,137 INFO L279 CfgBuilder]: Omitted future-live optimization because the input is a concurrent program. [2024-12-02 14:58:54,137 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 14:58:54,264 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 14:58:54,265 INFO L312 CfgBuilder]: Removed 4 assume(true) statements. [2024-12-02 14:58:54,265 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:54 BoogieIcfgContainer [2024-12-02 14:58:54,265 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 14:58:54,267 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 14:58:54,267 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 14:58:54,271 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 14:58:54,271 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 02:58:53" (1/3) ... [2024-12-02 14:58:54,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f26dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:54, skipping insertion in model container [2024-12-02 14:58:54,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 02:58:53" (2/3) ... [2024-12-02 14:58:54,272 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@32f26dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 02:58:54, skipping insertion in model container [2024-12-02 14:58:54,272 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:54" (3/3) ... [2024-12-02 14:58:54,273 INFO L128 eAbstractionObserver]: Analyzing ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i [2024-12-02 14:58:54,285 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 14:58:54,287 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG 13-privatized_68-pfscan_protected_loop_minimal_interval_true.i that has 2 procedures, 31 locations, 1 initial locations, 3 loop locations, and 2 error locations. [2024-12-02 14:58:54,287 INFO L491 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2024-12-02 14:58:54,326 INFO L143 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2024-12-02 14:58:54,370 INFO L73 FinitePrefix]: Start finitePrefix. Operand has 34 places, 37 transitions, 78 flow [2024-12-02 14:58:54,400 INFO L124 PetriNetUnfolderBase]: 7/36 cut-off events. [2024-12-02 14:58:54,402 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 14:58:54,405 INFO L83 FinitePrefix]: Finished finitePrefix Result has 40 conditions, 36 events. 7/36 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 4. Compared 48 event pairs, 0 based on Foata normal form. 0/27 useless extension candidates. Maximal degree in co-relation 34. Up to 2 conditions per place. [2024-12-02 14:58:54,405 INFO L82 GeneralOperation]: Start removeDead. Operand has 34 places, 37 transitions, 78 flow [2024-12-02 14:58:54,408 INFO L88 GeneralOperation]: Finished RemoveDead, result has has 33 places, 36 transitions, 75 flow [2024-12-02 14:58:54,416 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 14:58:54,429 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;@70ff747c, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 14:58:54,429 INFO L334 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2024-12-02 14:58:54,440 INFO L185 PetriNetUnfolderBase]: Found word, exiting Unfolder. [2024-12-02 14:58:54,440 INFO L124 PetriNetUnfolderBase]: 5/26 cut-off events. [2024-12-02 14:58:54,440 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 14:58:54,440 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:54,441 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:54,441 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:54,446 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:54,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1886817449, now seen corresponding path program 1 times [2024-12-02 14:58:54,452 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:54,453 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [311905474] [2024-12-02 14:58:54,453 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:58:54,453 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:58:54,611 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:54,611 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:54,612 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [311905474] [2024-12-02 14:58:54,612 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [311905474] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:54,612 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:54,613 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-12-02 14:58:54,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1553018534] [2024-12-02 14:58:54,615 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:54,621 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-12-02 14:58:54,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:54,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-12-02 14:58:54,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-12-02 14:58:54,645 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-12-02 14:58:54,647 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 33 places, 36 transitions, 75 flow. Second operand has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:54,647 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:54,647 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-12-02 14:58:54,648 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:54,742 INFO L124 PetriNetUnfolderBase]: 102/244 cut-off events. [2024-12-02 14:58:54,742 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 14:58:54,743 INFO L83 FinitePrefix]: Finished finitePrefix Result has 430 conditions, 244 events. 102/244 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 19. Compared 942 event pairs, 66 based on Foata normal form. 21/221 useless extension candidates. Maximal degree in co-relation 421. Up to 182 conditions per place. [2024-12-02 14:58:54,746 INFO L140 encePairwiseOnDemand]: 33/37 looper letters, 21 selfloop transitions, 0 changer transitions 0/32 dead transitions. [2024-12-02 14:58:54,746 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 33 places, 32 transitions, 109 flow [2024-12-02 14:58:54,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-12-02 14:58:54,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2 states. [2024-12-02 14:58:54,757 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2 states to 2 states and 49 transitions. [2024-12-02 14:58:54,759 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6621621621621622 [2024-12-02 14:58:54,760 INFO L175 Difference]: Start difference. First operand has 33 places, 36 transitions, 75 flow. Second operand 2 states and 49 transitions. [2024-12-02 14:58:54,761 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 33 places, 32 transitions, 109 flow [2024-12-02 14:58:54,765 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 32 places, 32 transitions, 108 flow, removed 0 selfloop flow, removed 1 redundant places. [2024-12-02 14:58:54,767 INFO L231 Difference]: Finished difference. Result has 32 places, 32 transitions, 66 flow [2024-12-02 14:58:54,770 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=31, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=32, PETRI_DIFFERENCE_SUBTRAHEND_STATES=2, PETRI_FLOW=66, PETRI_PLACES=32, PETRI_TRANSITIONS=32} [2024-12-02 14:58:54,773 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, -1 predicate places. [2024-12-02 14:58:54,773 INFO L471 AbstractCegarLoop]: Abstraction has has 32 places, 32 transitions, 66 flow [2024-12-02 14:58:54,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 15.0) internal successors, (30), 2 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:54,773 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:54,774 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:54,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 14:58:54,774 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:54,775 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:54,775 INFO L85 PathProgramCache]: Analyzing trace with hash 1886849227, now seen corresponding path program 1 times [2024-12-02 14:58:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:54,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2141713808] [2024-12-02 14:58:54,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:58:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:54,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:58:55,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:55,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:55,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2141713808] [2024-12-02 14:58:55,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2141713808] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:55,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:55,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:58:55,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718472847] [2024-12-02 14:58:55,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:55,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:58:55,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:55,027 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:58:55,027 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:58:55,051 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-12-02 14:58:55,051 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 32 places, 32 transitions, 66 flow. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:55,052 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:55,052 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-12-02 14:58:55,052 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:55,316 INFO L124 PetriNetUnfolderBase]: 218/450 cut-off events. [2024-12-02 14:58:55,316 INFO L125 PetriNetUnfolderBase]: For 0/0 co-relation queries the response was YES. [2024-12-02 14:58:55,317 INFO L83 FinitePrefix]: Finished finitePrefix Result has 860 conditions, 450 events. 218/450 cut-off events. For 0/0 co-relation queries the response was YES. Maximal size of possible extension queue 29. Compared 1934 event pairs, 20 based on Foata normal form. 0/369 useless extension candidates. Maximal degree in co-relation 857. Up to 241 conditions per place. [2024-12-02 14:58:55,319 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 47 selfloop transitions, 15 changer transitions 0/69 dead transitions. [2024-12-02 14:58:55,319 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 37 places, 69 transitions, 264 flow [2024-12-02 14:58:55,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:58:55,320 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 14:58:55,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 112 transitions. [2024-12-02 14:58:55,321 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5045045045045045 [2024-12-02 14:58:55,322 INFO L175 Difference]: Start difference. First operand has 32 places, 32 transitions, 66 flow. Second operand 6 states and 112 transitions. [2024-12-02 14:58:55,322 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 37 places, 69 transitions, 264 flow [2024-12-02 14:58:55,322 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 37 places, 69 transitions, 264 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 14:58:55,325 INFO L231 Difference]: Finished difference. Result has 42 places, 44 transitions, 168 flow [2024-12-02 14:58:55,325 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=66, PETRI_DIFFERENCE_MINUEND_PLACES=32, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=32, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=5, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=22, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=168, PETRI_PLACES=42, PETRI_TRANSITIONS=44} [2024-12-02 14:58:55,326 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 9 predicate places. [2024-12-02 14:58:55,326 INFO L471 AbstractCegarLoop]: Abstraction has has 42 places, 44 transitions, 168 flow [2024-12-02 14:58:55,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 5 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:55,326 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:55,326 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:55,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 14:58:55,326 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:55,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:55,327 INFO L85 PathProgramCache]: Analyzing trace with hash -1637250564, now seen corresponding path program 1 times [2024-12-02 14:58:55,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:55,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [914628478] [2024-12-02 14:58:55,327 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:58:55,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:55,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:58:55,433 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:55,433 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:55,433 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [914628478] [2024-12-02 14:58:55,433 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [914628478] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:55,433 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:55,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:58:55,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272855054] [2024-12-02 14:58:55,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:55,434 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:58:55,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:55,434 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:58:55,435 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:58:55,442 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:58:55,443 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 42 places, 44 transitions, 168 flow. Second operand has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:55,443 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:55,443 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:58:55,443 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:55,672 INFO L124 PetriNetUnfolderBase]: 278/559 cut-off events. [2024-12-02 14:58:55,673 INFO L125 PetriNetUnfolderBase]: For 184/186 co-relation queries the response was YES. [2024-12-02 14:58:55,674 INFO L83 FinitePrefix]: Finished finitePrefix Result has 1398 conditions, 559 events. 278/559 cut-off events. For 184/186 co-relation queries the response was YES. Maximal size of possible extension queue 36. Compared 2453 event pairs, 60 based on Foata normal form. 20/538 useless extension candidates. Maximal degree in co-relation 1390. Up to 303 conditions per place. [2024-12-02 14:58:55,677 INFO L140 encePairwiseOnDemand]: 25/37 looper letters, 58 selfloop transitions, 25 changer transitions 0/89 dead transitions. [2024-12-02 14:58:55,677 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 47 places, 89 transitions, 474 flow [2024-12-02 14:58:55,678 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:58:55,678 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 14:58:55,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 108 transitions. [2024-12-02 14:58:55,679 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4864864864864865 [2024-12-02 14:58:55,679 INFO L175 Difference]: Start difference. First operand has 42 places, 44 transitions, 168 flow. Second operand 6 states and 108 transitions. [2024-12-02 14:58:55,679 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 47 places, 89 transitions, 474 flow [2024-12-02 14:58:55,684 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 47 places, 89 transitions, 474 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 14:58:55,685 INFO L231 Difference]: Finished difference. Result has 52 places, 60 transitions, 366 flow [2024-12-02 14:58:55,686 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=168, PETRI_DIFFERENCE_MINUEND_PLACES=42, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=44, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=12, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=24, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=366, PETRI_PLACES=52, PETRI_TRANSITIONS=60} [2024-12-02 14:58:55,686 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 19 predicate places. [2024-12-02 14:58:55,686 INFO L471 AbstractCegarLoop]: Abstraction has has 52 places, 60 transitions, 366 flow [2024-12-02 14:58:55,687 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.6) internal successors, (43), 5 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:55,687 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:55,687 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:55,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 14:58:55,687 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:55,687 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash 783858626, now seen corresponding path program 1 times [2024-12-02 14:58:55,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:55,688 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1012786990] [2024-12-02 14:58:55,688 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:58:55,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:55,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:58:55,990 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:55,990 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1012786990] [2024-12-02 14:58:55,990 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1012786990] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:55,990 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:55,990 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:58:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [832513568] [2024-12-02 14:58:55,990 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:55,990 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:58:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:55,991 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:58:55,991 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:58:56,001 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-12-02 14:58:56,002 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 52 places, 60 transitions, 366 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:56,002 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:56,002 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-12-02 14:58:56,002 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:56,337 INFO L124 PetriNetUnfolderBase]: 399/859 cut-off events. [2024-12-02 14:58:56,337 INFO L125 PetriNetUnfolderBase]: For 1245/1262 co-relation queries the response was YES. [2024-12-02 14:58:56,339 INFO L83 FinitePrefix]: Finished finitePrefix Result has 2743 conditions, 859 events. 399/859 cut-off events. For 1245/1262 co-relation queries the response was YES. Maximal size of possible extension queue 66. Compared 4788 event pairs, 86 based on Foata normal form. 16/819 useless extension candidates. Maximal degree in co-relation 2730. Up to 360 conditions per place. [2024-12-02 14:58:56,342 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 87 selfloop transitions, 27 changer transitions 0/127 dead transitions. [2024-12-02 14:58:56,342 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 58 places, 127 transitions, 942 flow [2024-12-02 14:58:56,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:58:56,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 14:58:56,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 159 transitions. [2024-12-02 14:58:56,344 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6138996138996139 [2024-12-02 14:58:56,344 INFO L175 Difference]: Start difference. First operand has 52 places, 60 transitions, 366 flow. Second operand 7 states and 159 transitions. [2024-12-02 14:58:56,344 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 58 places, 127 transitions, 942 flow [2024-12-02 14:58:56,355 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 58 places, 127 transitions, 942 flow, removed 0 selfloop flow, removed 0 redundant places. [2024-12-02 14:58:56,356 INFO L231 Difference]: Finished difference. Result has 61 places, 76 transitions, 588 flow [2024-12-02 14:58:56,356 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=366, PETRI_DIFFERENCE_MINUEND_PLACES=52, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=60, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=11, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=41, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=588, PETRI_PLACES=61, PETRI_TRANSITIONS=76} [2024-12-02 14:58:56,357 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 28 predicate places. [2024-12-02 14:58:56,357 INFO L471 AbstractCegarLoop]: Abstraction has has 61 places, 76 transitions, 588 flow [2024-12-02 14:58:56,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:56,357 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:56,357 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:56,358 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 14:58:56,358 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:56,358 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:56,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1461957722, now seen corresponding path program 2 times [2024-12-02 14:58:56,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:56,359 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1219801043] [2024-12-02 14:58:56,359 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:58:56,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:56,380 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:58:56,380 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:58:56,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:56,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:56,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1219801043] [2024-12-02 14:58:56,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1219801043] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:56,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:56,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:58:56,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145549897] [2024-12-02 14:58:56,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:56,850 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:58:56,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:56,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:58:56,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:58:56,873 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-12-02 14:58:56,873 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 61 places, 76 transitions, 588 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:56,873 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:56,873 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-12-02 14:58:56,873 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:57,432 INFO L124 PetriNetUnfolderBase]: 468/945 cut-off events. [2024-12-02 14:58:57,433 INFO L125 PetriNetUnfolderBase]: For 1980/2011 co-relation queries the response was YES. [2024-12-02 14:58:57,435 INFO L83 FinitePrefix]: Finished finitePrefix Result has 3469 conditions, 945 events. 468/945 cut-off events. For 1980/2011 co-relation queries the response was YES. Maximal size of possible extension queue 65. Compared 4965 event pairs, 104 based on Foata normal form. 32/971 useless extension candidates. Maximal degree in co-relation 3452. Up to 583 conditions per place. [2024-12-02 14:58:57,442 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 67 selfloop transitions, 61 changer transitions 0/136 dead transitions. [2024-12-02 14:58:57,442 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 73 places, 136 transitions, 1241 flow [2024-12-02 14:58:57,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-12-02 14:58:57,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2024-12-02 14:58:57,444 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 196 transitions. [2024-12-02 14:58:57,445 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4074844074844075 [2024-12-02 14:58:57,445 INFO L175 Difference]: Start difference. First operand has 61 places, 76 transitions, 588 flow. Second operand 13 states and 196 transitions. [2024-12-02 14:58:57,445 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 73 places, 136 transitions, 1241 flow [2024-12-02 14:58:57,458 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 71 places, 136 transitions, 1205 flow, removed 0 selfloop flow, removed 2 redundant places. [2024-12-02 14:58:57,461 INFO L231 Difference]: Finished difference. Result has 74 places, 108 transitions, 999 flow [2024-12-02 14:58:57,462 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=569, PETRI_DIFFERENCE_MINUEND_PLACES=59, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=76, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=31, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=43, PETRI_DIFFERENCE_SUBTRAHEND_STATES=13, PETRI_FLOW=999, PETRI_PLACES=74, PETRI_TRANSITIONS=108} [2024-12-02 14:58:57,462 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 41 predicate places. [2024-12-02 14:58:57,462 INFO L471 AbstractCegarLoop]: Abstraction has has 74 places, 108 transitions, 999 flow [2024-12-02 14:58:57,463 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:57,463 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:57,463 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:57,463 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 14:58:57,463 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:57,464 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:57,464 INFO L85 PathProgramCache]: Analyzing trace with hash 274750052, now seen corresponding path program 3 times [2024-12-02 14:58:57,464 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:57,464 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [101535298] [2024-12-02 14:58:57,464 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:58:57,464 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:57,484 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 14:58:57,484 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:58:57,732 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:57,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:57,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [101535298] [2024-12-02 14:58:57,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [101535298] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:57,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:57,733 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:58:57,733 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188655221] [2024-12-02 14:58:57,733 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:57,733 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:58:57,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:57,734 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:58:57,734 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:58:57,737 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-12-02 14:58:57,737 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 74 places, 108 transitions, 999 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:57,737 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:57,738 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-12-02 14:58:57,738 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:58,157 INFO L124 PetriNetUnfolderBase]: 663/1434 cut-off events. [2024-12-02 14:58:58,157 INFO L125 PetriNetUnfolderBase]: For 3723/3748 co-relation queries the response was YES. [2024-12-02 14:58:58,161 INFO L83 FinitePrefix]: Finished finitePrefix Result has 5529 conditions, 1434 events. 663/1434 cut-off events. For 3723/3748 co-relation queries the response was YES. Maximal size of possible extension queue 75. Compared 8215 event pairs, 138 based on Foata normal form. 16/1448 useless extension candidates. Maximal degree in co-relation 5509. Up to 531 conditions per place. [2024-12-02 14:58:58,168 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 128 selfloop transitions, 43 changer transitions 0/186 dead transitions. [2024-12-02 14:58:58,168 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 80 places, 186 transitions, 1809 flow [2024-12-02 14:58:58,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:58:58,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 14:58:58,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 168 transitions. [2024-12-02 14:58:58,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6486486486486487 [2024-12-02 14:58:58,170 INFO L175 Difference]: Start difference. First operand has 74 places, 108 transitions, 999 flow. Second operand 7 states and 168 transitions. [2024-12-02 14:58:58,170 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 80 places, 186 transitions, 1809 flow [2024-12-02 14:58:58,189 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 77 places, 186 transitions, 1737 flow, removed 2 selfloop flow, removed 3 redundant places. [2024-12-02 14:58:58,192 INFO L231 Difference]: Finished difference. Result has 80 places, 118 transitions, 1153 flow [2024-12-02 14:58:58,193 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=927, PETRI_DIFFERENCE_MINUEND_PLACES=71, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=108, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=35, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=67, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1153, PETRI_PLACES=80, PETRI_TRANSITIONS=118} [2024-12-02 14:58:58,193 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 47 predicate places. [2024-12-02 14:58:58,193 INFO L471 AbstractCegarLoop]: Abstraction has has 80 places, 118 transitions, 1153 flow [2024-12-02 14:58:58,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:58,194 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:58,194 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:58,194 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 14:58:58,194 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:58,194 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:58,195 INFO L85 PathProgramCache]: Analyzing trace with hash -658982458, now seen corresponding path program 4 times [2024-12-02 14:58:58,195 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:58,195 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245688540] [2024-12-02 14:58:58,195 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:58:58,195 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:58,207 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:58:58,207 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:58:58,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:58,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:58,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245688540] [2024-12-02 14:58:58,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [245688540] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:58,289 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:58,289 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 14:58:58,289 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141716728] [2024-12-02 14:58:58,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:58,289 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:58:58,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:58,290 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:58:58,290 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:58:58,294 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-12-02 14:58:58,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 80 places, 118 transitions, 1153 flow. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:58,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:58,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-12-02 14:58:58,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:58,688 INFO L124 PetriNetUnfolderBase]: 803/1743 cut-off events. [2024-12-02 14:58:58,688 INFO L125 PetriNetUnfolderBase]: For 5476/5557 co-relation queries the response was YES. [2024-12-02 14:58:58,693 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7051 conditions, 1743 events. 803/1743 cut-off events. For 5476/5557 co-relation queries the response was YES. Maximal size of possible extension queue 78. Compared 10618 event pairs, 136 based on Foata normal form. 75/1804 useless extension candidates. Maximal degree in co-relation 7027. Up to 709 conditions per place. [2024-12-02 14:58:58,703 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 169 selfloop transitions, 27 changer transitions 0/214 dead transitions. [2024-12-02 14:58:58,703 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 84 places, 214 transitions, 2384 flow [2024-12-02 14:58:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:58:58,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 14:58:58,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 123 transitions. [2024-12-02 14:58:58,704 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.6648648648648648 [2024-12-02 14:58:58,704 INFO L175 Difference]: Start difference. First operand has 80 places, 118 transitions, 1153 flow. Second operand 5 states and 123 transitions. [2024-12-02 14:58:58,704 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 84 places, 214 transitions, 2384 flow [2024-12-02 14:58:58,728 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 82 places, 214 transitions, 2267 flow, removed 43 selfloop flow, removed 2 redundant places. [2024-12-02 14:58:58,731 INFO L231 Difference]: Finished difference. Result has 85 places, 131 transitions, 1280 flow [2024-12-02 14:58:58,732 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1020, PETRI_DIFFERENCE_MINUEND_PLACES=78, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=113, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=9, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=92, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=1280, PETRI_PLACES=85, PETRI_TRANSITIONS=131} [2024-12-02 14:58:58,732 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 52 predicate places. [2024-12-02 14:58:58,732 INFO L471 AbstractCegarLoop]: Abstraction has has 85 places, 131 transitions, 1280 flow [2024-12-02 14:58:58,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:58,732 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:58,733 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:58,733 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 14:58:58,733 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:58,733 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:58,733 INFO L85 PathProgramCache]: Analyzing trace with hash 1635116866, now seen corresponding path program 5 times [2024-12-02 14:58:58,733 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:58,733 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886379885] [2024-12-02 14:58:58,734 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 14:58:58,734 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:58,747 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:58:58,747 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:58:58,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:58,924 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:58,924 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886379885] [2024-12-02 14:58:58,924 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886379885] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:58,924 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:58,924 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:58:58,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2144766734] [2024-12-02 14:58:58,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:58,925 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 14:58:58,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:58,925 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 14:58:58,925 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-12-02 14:58:58,929 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-12-02 14:58:58,929 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 85 places, 131 transitions, 1280 flow. Second operand has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:58,930 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:58,930 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-12-02 14:58:58,930 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:58:59,446 INFO L124 PetriNetUnfolderBase]: 822/1812 cut-off events. [2024-12-02 14:58:59,446 INFO L125 PetriNetUnfolderBase]: For 7100/7140 co-relation queries the response was YES. [2024-12-02 14:58:59,451 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8266 conditions, 1812 events. 822/1812 cut-off events. For 7100/7140 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11002 event pairs, 223 based on Foata normal form. 20/1826 useless extension candidates. Maximal degree in co-relation 8238. Up to 1065 conditions per place. [2024-12-02 14:58:59,460 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 144 selfloop transitions, 40 changer transitions 0/199 dead transitions. [2024-12-02 14:58:59,460 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 91 places, 199 transitions, 2158 flow [2024-12-02 14:58:59,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:58:59,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 14:58:59,462 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 166 transitions. [2024-12-02 14:58:59,463 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.640926640926641 [2024-12-02 14:58:59,463 INFO L175 Difference]: Start difference. First operand has 85 places, 131 transitions, 1280 flow. Second operand 7 states and 166 transitions. [2024-12-02 14:58:59,463 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 91 places, 199 transitions, 2158 flow [2024-12-02 14:58:59,488 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 90 places, 199 transitions, 2135 flow, removed 4 selfloop flow, removed 1 redundant places. [2024-12-02 14:58:59,491 INFO L231 Difference]: Finished difference. Result has 92 places, 139 transitions, 1495 flow [2024-12-02 14:58:59,491 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1271, PETRI_DIFFERENCE_MINUEND_PLACES=84, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=32, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=91, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=1495, PETRI_PLACES=92, PETRI_TRANSITIONS=139} [2024-12-02 14:58:59,491 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 59 predicate places. [2024-12-02 14:58:59,492 INFO L471 AbstractCegarLoop]: Abstraction has has 92 places, 139 transitions, 1495 flow [2024-12-02 14:58:59,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 12.428571428571429) internal successors, (87), 7 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:59,492 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:58:59,492 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:58:59,492 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 14:58:59,492 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:58:59,493 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:58:59,493 INFO L85 PathProgramCache]: Analyzing trace with hash -61344554, now seen corresponding path program 6 times [2024-12-02 14:58:59,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:58:59,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1361899757] [2024-12-02 14:58:59,493 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 14:58:59,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:58:59,508 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-12-02 14:58:59,508 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:58:59,828 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:58:59,828 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:58:59,829 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1361899757] [2024-12-02 14:58:59,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1361899757] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:58:59,829 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:58:59,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:58:59,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [97361048] [2024-12-02 14:58:59,829 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:58:59,829 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:58:59,829 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:58:59,829 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:58:59,830 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:58:59,852 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-12-02 14:58:59,852 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 92 places, 139 transitions, 1495 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:58:59,852 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:58:59,852 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-12-02 14:58:59,852 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:00,376 INFO L124 PetriNetUnfolderBase]: 921/1915 cut-off events. [2024-12-02 14:59:00,376 INFO L125 PetriNetUnfolderBase]: For 8293/8367 co-relation queries the response was YES. [2024-12-02 14:59:00,382 INFO L83 FinitePrefix]: Finished finitePrefix Result has 8869 conditions, 1915 events. 921/1915 cut-off events. For 8293/8367 co-relation queries the response was YES. Maximal size of possible extension queue 72. Compared 11112 event pairs, 234 based on Foata normal form. 66/1966 useless extension candidates. Maximal degree in co-relation 8839. Up to 1354 conditions per place. [2024-12-02 14:59:00,392 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 103 selfloop transitions, 66 changer transitions 0/179 dead transitions. [2024-12-02 14:59:00,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 100 places, 179 transitions, 2114 flow [2024-12-02 14:59:00,392 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-12-02 14:59:00,392 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9 states. [2024-12-02 14:59:00,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9 states to 9 states and 150 transitions. [2024-12-02 14:59:00,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.45045045045045046 [2024-12-02 14:59:00,393 INFO L175 Difference]: Start difference. First operand has 92 places, 139 transitions, 1495 flow. Second operand 9 states and 150 transitions. [2024-12-02 14:59:00,393 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 100 places, 179 transitions, 2114 flow [2024-12-02 14:59:00,418 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 96 places, 179 transitions, 2004 flow, removed 18 selfloop flow, removed 4 redundant places. [2024-12-02 14:59:00,421 INFO L231 Difference]: Finished difference. Result has 100 places, 154 transitions, 1761 flow [2024-12-02 14:59:00,421 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1396, PETRI_DIFFERENCE_MINUEND_PLACES=88, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=139, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=52, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=83, PETRI_DIFFERENCE_SUBTRAHEND_STATES=9, PETRI_FLOW=1761, PETRI_PLACES=100, PETRI_TRANSITIONS=154} [2024-12-02 14:59:00,422 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 67 predicate places. [2024-12-02 14:59:00,422 INFO L471 AbstractCegarLoop]: Abstraction has has 100 places, 154 transitions, 1761 flow [2024-12-02 14:59:00,422 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:00,422 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:00,422 INFO L206 CegarLoopForPetriNet]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:00,423 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 14:59:00,423 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:00,423 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:00,423 INFO L85 PathProgramCache]: Analyzing trace with hash 1539984146, now seen corresponding path program 7 times [2024-12-02 14:59:00,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:00,423 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1433980953] [2024-12-02 14:59:00,423 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 14:59:00,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:00,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:00,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:00,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:00,681 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1433980953] [2024-12-02 14:59:00,681 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1433980953] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:00,681 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:00,681 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 14:59:00,681 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547797474] [2024-12-02 14:59:00,681 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:00,681 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:59:00,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:00,682 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:59:00,682 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:59:00,704 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-12-02 14:59:00,704 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 100 places, 154 transitions, 1761 flow. Second operand has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:00,704 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:00,704 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-12-02 14:59:00,704 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:01,159 INFO L124 PetriNetUnfolderBase]: 776/1629 cut-off events. [2024-12-02 14:59:01,159 INFO L125 PetriNetUnfolderBase]: For 7074/7135 co-relation queries the response was YES. [2024-12-02 14:59:01,162 INFO L83 FinitePrefix]: Finished finitePrefix Result has 7665 conditions, 1629 events. 776/1629 cut-off events. For 7074/7135 co-relation queries the response was YES. Maximal size of possible extension queue 71. Compared 9279 event pairs, 212 based on Foata normal form. 55/1668 useless extension candidates. Maximal degree in co-relation 7631. Up to 1192 conditions per place. [2024-12-02 14:59:01,169 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 105 selfloop transitions, 47 changer transitions 0/162 dead transitions. [2024-12-02 14:59:01,169 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 108 places, 162 transitions, 1875 flow [2024-12-02 14:59:01,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:59:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 14:59:01,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 166 transitions. [2024-12-02 14:59:01,170 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4486486486486487 [2024-12-02 14:59:01,171 INFO L175 Difference]: Start difference. First operand has 100 places, 154 transitions, 1761 flow. Second operand 10 states and 166 transitions. [2024-12-02 14:59:01,171 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 108 places, 162 transitions, 1875 flow [2024-12-02 14:59:01,186 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 104 places, 162 transitions, 1808 flow, removed 20 selfloop flow, removed 4 redundant places. [2024-12-02 14:59:01,188 INFO L231 Difference]: Finished difference. Result has 106 places, 137 transitions, 1504 flow [2024-12-02 14:59:01,188 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1316, PETRI_DIFFERENCE_MINUEND_PLACES=95, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=131, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=41, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=88, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=1504, PETRI_PLACES=106, PETRI_TRANSITIONS=137} [2024-12-02 14:59:01,189 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 73 predicate places. [2024-12-02 14:59:01,189 INFO L471 AbstractCegarLoop]: Abstraction has has 106 places, 137 transitions, 1504 flow [2024-12-02 14:59:01,189 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.25) internal successors, (74), 8 states have internal predecessors, (74), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:01,189 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:01,189 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:01,189 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 14:59:01,189 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:01,190 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:01,190 INFO L85 PathProgramCache]: Analyzing trace with hash -1769826712, now seen corresponding path program 1 times [2024-12-02 14:59:01,190 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:01,190 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1073442881] [2024-12-02 14:59:01,190 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:01,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:01,490 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:01,490 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:01,490 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1073442881] [2024-12-02 14:59:01,490 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1073442881] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:01,490 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:01,490 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2024-12-02 14:59:01,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822442205] [2024-12-02 14:59:01,490 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:01,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-12-02 14:59:01,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:01,491 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-12-02 14:59:01,491 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2024-12-02 14:59:01,515 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 8 out of 37 [2024-12-02 14:59:01,515 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 106 places, 137 transitions, 1504 flow. Second operand has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:01,515 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:01,515 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 8 of 37 [2024-12-02 14:59:01,515 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:02,380 INFO L124 PetriNetUnfolderBase]: 1448/2956 cut-off events. [2024-12-02 14:59:02,381 INFO L125 PetriNetUnfolderBase]: For 14274/14389 co-relation queries the response was YES. [2024-12-02 14:59:02,393 INFO L83 FinitePrefix]: Finished finitePrefix Result has 14152 conditions, 2956 events. 1448/2956 cut-off events. For 14274/14389 co-relation queries the response was YES. Maximal size of possible extension queue 89. Compared 17659 event pairs, 309 based on Foata normal form. 159/3090 useless extension candidates. Maximal degree in co-relation 14117. Up to 1284 conditions per place. [2024-12-02 14:59:02,413 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 211 selfloop transitions, 157 changer transitions 0/378 dead transitions. [2024-12-02 14:59:02,413 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 120 places, 378 transitions, 4384 flow [2024-12-02 14:59:02,414 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 14:59:02,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2024-12-02 14:59:02,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 301 transitions. [2024-12-02 14:59:02,416 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5423423423423424 [2024-12-02 14:59:02,416 INFO L175 Difference]: Start difference. First operand has 106 places, 137 transitions, 1504 flow. Second operand 15 states and 301 transitions. [2024-12-02 14:59:02,416 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 120 places, 378 transitions, 4384 flow [2024-12-02 14:59:02,453 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 113 places, 378 transitions, 4221 flow, removed 5 selfloop flow, removed 7 redundant places. [2024-12-02 14:59:02,460 INFO L231 Difference]: Finished difference. Result has 127 places, 267 transitions, 3439 flow [2024-12-02 14:59:02,460 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=1426, PETRI_DIFFERENCE_MINUEND_PLACES=99, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=137, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=59, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=68, PETRI_DIFFERENCE_SUBTRAHEND_STATES=15, PETRI_FLOW=3439, PETRI_PLACES=127, PETRI_TRANSITIONS=267} [2024-12-02 14:59:02,461 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 94 predicate places. [2024-12-02 14:59:02,461 INFO L471 AbstractCegarLoop]: Abstraction has has 127 places, 267 transitions, 3439 flow [2024-12-02 14:59:02,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 9.6) internal successors, (96), 10 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:02,461 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:02,462 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:02,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-12-02 14:59:02,462 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:02,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:02,462 INFO L85 PathProgramCache]: Analyzing trace with hash 1407839246, now seen corresponding path program 2 times [2024-12-02 14:59:02,462 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:02,462 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1834479033] [2024-12-02 14:59:02,463 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:59:02,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:02,480 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:59:02,480 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:02,670 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:59:02,670 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:02,670 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1834479033] [2024-12-02 14:59:02,670 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1834479033] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:02,670 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:02,670 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:59:02,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577626893] [2024-12-02 14:59:02,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:02,671 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:59:02,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:02,671 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:59:02,671 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:59:02,680 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:02,680 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 127 places, 267 transitions, 3439 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:02,680 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:02,680 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:02,680 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:03,520 INFO L124 PetriNetUnfolderBase]: 1836/3702 cut-off events. [2024-12-02 14:59:03,520 INFO L125 PetriNetUnfolderBase]: For 30882/30912 co-relation queries the response was YES. [2024-12-02 14:59:03,530 INFO L83 FinitePrefix]: Finished finitePrefix Result has 21229 conditions, 3702 events. 1836/3702 cut-off events. For 30882/30912 co-relation queries the response was YES. Maximal size of possible extension queue 106. Compared 22840 event pairs, 273 based on Foata normal form. 44/3745 useless extension candidates. Maximal degree in co-relation 21182. Up to 1297 conditions per place. [2024-12-02 14:59:03,543 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 276 selfloop transitions, 261 changer transitions 0/543 dead transitions. [2024-12-02 14:59:03,543 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 140 places, 543 transitions, 7705 flow [2024-12-02 14:59:03,543 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-12-02 14:59:03,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2024-12-02 14:59:03,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 219 transitions. [2024-12-02 14:59:03,544 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.42277992277992277 [2024-12-02 14:59:03,544 INFO L175 Difference]: Start difference. First operand has 127 places, 267 transitions, 3439 flow. Second operand 14 states and 219 transitions. [2024-12-02 14:59:03,545 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 140 places, 543 transitions, 7705 flow [2024-12-02 14:59:03,669 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 140 places, 543 transitions, 7619 flow, removed 43 selfloop flow, removed 0 redundant places. [2024-12-02 14:59:03,674 INFO L231 Difference]: Finished difference. Result has 152 places, 431 transitions, 6635 flow [2024-12-02 14:59:03,674 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=3401, PETRI_DIFFERENCE_MINUEND_PLACES=127, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=267, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=106, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=107, PETRI_DIFFERENCE_SUBTRAHEND_STATES=14, PETRI_FLOW=6635, PETRI_PLACES=152, PETRI_TRANSITIONS=431} [2024-12-02 14:59:03,674 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 119 predicate places. [2024-12-02 14:59:03,675 INFO L471 AbstractCegarLoop]: Abstraction has has 152 places, 431 transitions, 6635 flow [2024-12-02 14:59:03,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:03,675 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:03,675 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:03,675 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-12-02 14:59:03,675 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:03,675 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:03,675 INFO L85 PathProgramCache]: Analyzing trace with hash 1398008216, now seen corresponding path program 3 times [2024-12-02 14:59:03,675 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:03,676 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154735176] [2024-12-02 14:59:03,676 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-12-02 14:59:03,676 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:03,685 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 1 check-sat command(s) [2024-12-02 14:59:03,685 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:03,848 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:59:03,849 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:03,849 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154735176] [2024-12-02 14:59:03,849 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154735176] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:03,849 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:03,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-12-02 14:59:03,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1537203701] [2024-12-02 14:59:03,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:03,849 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 14:59:03,849 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:03,850 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 14:59:03,850 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2024-12-02 14:59:03,859 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:03,859 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 152 places, 431 transitions, 6635 flow. Second operand has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:03,859 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:03,859 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:03,859 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:05,082 INFO L124 PetriNetUnfolderBase]: 1924/3884 cut-off events. [2024-12-02 14:59:05,082 INFO L125 PetriNetUnfolderBase]: For 48350/48360 co-relation queries the response was YES. [2024-12-02 14:59:05,097 INFO L83 FinitePrefix]: Finished finitePrefix Result has 25852 conditions, 3884 events. 1924/3884 cut-off events. For 48350/48360 co-relation queries the response was YES. Maximal size of possible extension queue 112. Compared 24240 event pairs, 131 based on Foata normal form. 28/3911 useless extension candidates. Maximal degree in co-relation 25793. Up to 978 conditions per place. [2024-12-02 14:59:05,120 INFO L140 encePairwiseOnDemand]: 22/37 looper letters, 228 selfloop transitions, 399 changer transitions 0/633 dead transitions. [2024-12-02 14:59:05,121 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 168 places, 633 transitions, 10410 flow [2024-12-02 14:59:05,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-12-02 14:59:05,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2024-12-02 14:59:05,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 259 transitions. [2024-12-02 14:59:05,123 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4117647058823529 [2024-12-02 14:59:05,123 INFO L175 Difference]: Start difference. First operand has 152 places, 431 transitions, 6635 flow. Second operand 17 states and 259 transitions. [2024-12-02 14:59:05,123 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 168 places, 633 transitions, 10410 flow [2024-12-02 14:59:05,342 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 167 places, 633 transitions, 10091 flow, removed 116 selfloop flow, removed 1 redundant places. [2024-12-02 14:59:05,351 INFO L231 Difference]: Finished difference. Result has 177 places, 551 transitions, 9520 flow [2024-12-02 14:59:05,351 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=6392, PETRI_DIFFERENCE_MINUEND_PLACES=151, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=431, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=292, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=127, PETRI_DIFFERENCE_SUBTRAHEND_STATES=17, PETRI_FLOW=9520, PETRI_PLACES=177, PETRI_TRANSITIONS=551} [2024-12-02 14:59:05,352 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 144 predicate places. [2024-12-02 14:59:05,352 INFO L471 AbstractCegarLoop]: Abstraction has has 177 places, 551 transitions, 9520 flow [2024-12-02 14:59:05,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 9.125) internal successors, (73), 8 states have internal predecessors, (73), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:05,352 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:05,352 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:05,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 14:59:05,352 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:05,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:05,353 INFO L85 PathProgramCache]: Analyzing trace with hash 575301424, now seen corresponding path program 4 times [2024-12-02 14:59:05,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:05,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950759591] [2024-12-02 14:59:05,353 INFO L95 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-12-02 14:59:05,353 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:05,363 INFO L229 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-12-02 14:59:05,364 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:05,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:05,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:05,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950759591] [2024-12-02 14:59:05,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950759591] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:05,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:05,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 14:59:05,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093505056] [2024-12-02 14:59:05,464 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:05,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:59:05,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:05,465 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:59:05,465 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-12-02 14:59:05,471 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-12-02 14:59:05,472 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 177 places, 551 transitions, 9520 flow. Second operand has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:05,472 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:05,472 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-12-02 14:59:05,472 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:06,681 INFO L124 PetriNetUnfolderBase]: 2250/4725 cut-off events. [2024-12-02 14:59:06,681 INFO L125 PetriNetUnfolderBase]: For 66904/67108 co-relation queries the response was YES. [2024-12-02 14:59:06,699 INFO L83 FinitePrefix]: Finished finitePrefix Result has 34161 conditions, 4725 events. 2250/4725 cut-off events. For 66904/67108 co-relation queries the response was YES. Maximal size of possible extension queue 131. Compared 32483 event pairs, 150 based on Foata normal form. 173/4829 useless extension candidates. Maximal degree in co-relation 34092. Up to 1750 conditions per place. [2024-12-02 14:59:06,720 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 462 selfloop transitions, 258 changer transitions 0/796 dead transitions. [2024-12-02 14:59:06,720 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 184 places, 796 transitions, 14932 flow [2024-12-02 14:59:06,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:59:06,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 14:59:06,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 171 transitions. [2024-12-02 14:59:06,722 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5777027027027027 [2024-12-02 14:59:06,722 INFO L175 Difference]: Start difference. First operand has 177 places, 551 transitions, 9520 flow. Second operand 8 states and 171 transitions. [2024-12-02 14:59:06,722 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 184 places, 796 transitions, 14932 flow [2024-12-02 14:59:07,197 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 182 places, 796 transitions, 14546 flow, removed 171 selfloop flow, removed 2 redundant places. [2024-12-02 14:59:07,206 INFO L231 Difference]: Finished difference. Result has 184 places, 603 transitions, 10564 flow [2024-12-02 14:59:07,207 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=9246, PETRI_DIFFERENCE_MINUEND_PLACES=175, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=551, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=210, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=339, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=10564, PETRI_PLACES=184, PETRI_TRANSITIONS=603} [2024-12-02 14:59:07,207 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 151 predicate places. [2024-12-02 14:59:07,207 INFO L471 AbstractCegarLoop]: Abstraction has has 184 places, 603 transitions, 10564 flow [2024-12-02 14:59:07,207 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.5) internal successors, (87), 6 states have internal predecessors, (87), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:07,207 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:07,208 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:07,208 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-12-02 14:59:07,208 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:07,208 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:07,208 INFO L85 PathProgramCache]: Analyzing trace with hash -1549711700, now seen corresponding path program 5 times [2024-12-02 14:59:07,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:07,208 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1607103687] [2024-12-02 14:59:07,208 INFO L95 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-12-02 14:59:07,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:07,220 INFO L229 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-12-02 14:59:07,220 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:07,619 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:07,619 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:07,619 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1607103687] [2024-12-02 14:59:07,619 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1607103687] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:07,619 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:07,619 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-12-02 14:59:07,619 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [290452676] [2024-12-02 14:59:07,619 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:07,619 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-12-02 14:59:07,620 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:07,620 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-12-02 14:59:07,620 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2024-12-02 14:59:07,637 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:07,637 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 184 places, 603 transitions, 10564 flow. Second operand has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:07,637 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:07,637 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:07,637 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:10,411 INFO L124 PetriNetUnfolderBase]: 4544/9115 cut-off events. [2024-12-02 14:59:10,411 INFO L125 PetriNetUnfolderBase]: For 135419/135463 co-relation queries the response was YES. [2024-12-02 14:59:10,446 INFO L83 FinitePrefix]: Finished finitePrefix Result has 69610 conditions, 9115 events. 4544/9115 cut-off events. For 135419/135463 co-relation queries the response was YES. Maximal size of possible extension queue 226. Compared 67970 event pairs, 731 based on Foata normal form. 36/9117 useless extension candidates. Maximal degree in co-relation 69539. Up to 4169 conditions per place. [2024-12-02 14:59:10,474 INFO L140 encePairwiseOnDemand]: 21/37 looper letters, 799 selfloop transitions, 563 changer transitions 0/1368 dead transitions. [2024-12-02 14:59:10,474 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 201 places, 1368 transitions, 25748 flow [2024-12-02 14:59:10,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2024-12-02 14:59:10,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2024-12-02 14:59:10,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 326 transitions. [2024-12-02 14:59:10,475 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4894894894894895 [2024-12-02 14:59:10,475 INFO L175 Difference]: Start difference. First operand has 184 places, 603 transitions, 10564 flow. Second operand 18 states and 326 transitions. [2024-12-02 14:59:10,476 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 201 places, 1368 transitions, 25748 flow [2024-12-02 14:59:11,499 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 198 places, 1368 transitions, 25166 flow, removed 134 selfloop flow, removed 3 redundant places. [2024-12-02 14:59:11,514 INFO L231 Difference]: Finished difference. Result has 212 places, 1074 transitions, 21314 flow [2024-12-02 14:59:11,514 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=10290, PETRI_DIFFERENCE_MINUEND_PLACES=181, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=603, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=198, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=275, PETRI_DIFFERENCE_SUBTRAHEND_STATES=18, PETRI_FLOW=21314, PETRI_PLACES=212, PETRI_TRANSITIONS=1074} [2024-12-02 14:59:11,514 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 179 predicate places. [2024-12-02 14:59:11,514 INFO L471 AbstractCegarLoop]: Abstraction has has 212 places, 1074 transitions, 21314 flow [2024-12-02 14:59:11,515 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 8.545454545454545) internal successors, (94), 11 states have internal predecessors, (94), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:11,515 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:11,515 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:11,515 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 14:59:11,515 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:11,515 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:11,515 INFO L85 PathProgramCache]: Analyzing trace with hash 651054908, now seen corresponding path program 6 times [2024-12-02 14:59:11,515 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:11,516 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1658968968] [2024-12-02 14:59:11,516 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 14:59:11,516 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:11,591 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-12-02 14:59:11,591 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:11,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:59:11,745 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1658968968] [2024-12-02 14:59:11,745 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1658968968] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:11,745 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [188455143] [2024-12-02 14:59:11,745 INFO L95 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-12-02 14:59:11,745 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:11,745 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:59:11,748 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:59:11,749 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 14:59:11,835 INFO L229 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 1 check-sat command(s) [2024-12-02 14:59:11,835 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:11,837 INFO L256 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 14:59:11,841 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:59:12,100 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 32 treesize of output 16 [2024-12-02 14:59:12,138 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 15 treesize of output 7 [2024-12-02 14:59:12,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:59:12,153 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:59:12,282 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-12-02 14:59:12,282 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 1 [2024-12-02 14:59:12,283 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 14:59:12,283 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [188455143] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:12,283 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:59:12,283 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [8, 8] total 18 [2024-12-02 14:59:12,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873328308] [2024-12-02 14:59:12,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:12,283 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:59:12,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:12,284 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:59:12,284 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=62, Invalid=244, Unknown=0, NotChecked=0, Total=306 [2024-12-02 14:59:12,293 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:12,294 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 212 places, 1074 transitions, 21314 flow. Second operand has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:12,294 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:12,294 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:12,294 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:16,283 INFO L124 PetriNetUnfolderBase]: 6082/12109 cut-off events. [2024-12-02 14:59:16,283 INFO L125 PetriNetUnfolderBase]: For 230033/230083 co-relation queries the response was YES. [2024-12-02 14:59:16,344 INFO L83 FinitePrefix]: Finished finitePrefix Result has 101096 conditions, 12109 events. 6082/12109 cut-off events. For 230033/230083 co-relation queries the response was YES. Maximal size of possible extension queue 283. Compared 93991 event pairs, 394 based on Foata normal form. 38/12128 useless extension candidates. Maximal degree in co-relation 101014. Up to 6070 conditions per place. [2024-12-02 14:59:16,392 INFO L140 encePairwiseOnDemand]: 23/37 looper letters, 771 selfloop transitions, 726 changer transitions 0/1503 dead transitions. [2024-12-02 14:59:16,392 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 219 places, 1503 transitions, 32372 flow [2024-12-02 14:59:16,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 14:59:16,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8 states. [2024-12-02 14:59:16,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8 states to 8 states and 141 transitions. [2024-12-02 14:59:16,393 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.47635135135135137 [2024-12-02 14:59:16,393 INFO L175 Difference]: Start difference. First operand has 212 places, 1074 transitions, 21314 flow. Second operand 8 states and 141 transitions. [2024-12-02 14:59:16,394 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 219 places, 1503 transitions, 32372 flow [2024-12-02 14:59:19,067 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 219 places, 1503 transitions, 31820 flow, removed 276 selfloop flow, removed 0 redundant places. [2024-12-02 14:59:19,087 INFO L231 Difference]: Finished difference. Result has 225 places, 1383 transitions, 30447 flow [2024-12-02 14:59:19,087 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=20954, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1074, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=438, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=443, PETRI_DIFFERENCE_SUBTRAHEND_STATES=8, PETRI_FLOW=30447, PETRI_PLACES=225, PETRI_TRANSITIONS=1383} [2024-12-02 14:59:19,088 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 192 predicate places. [2024-12-02 14:59:19,088 INFO L471 AbstractCegarLoop]: Abstraction has has 225 places, 1383 transitions, 30447 flow [2024-12-02 14:59:19,088 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.666666666666666) internal successors, (58), 6 states have internal predecessors, (58), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:19,088 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:19,088 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:19,094 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 14:59:19,288 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2024-12-02 14:59:19,289 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting workerErr1ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:19,289 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:19,289 INFO L85 PathProgramCache]: Analyzing trace with hash 1523289602, now seen corresponding path program 7 times [2024-12-02 14:59:19,289 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:19,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1828750586] [2024-12-02 14:59:19,289 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 14:59:19,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:19,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:19,544 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:19,544 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:19,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1828750586] [2024-12-02 14:59:19,544 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1828750586] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:19,544 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1449652274] [2024-12-02 14:59:19,544 INFO L95 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-12-02 14:59:19,544 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:19,544 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:59:19,546 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:59:19,548 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 14:59:19,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:19,634 INFO L256 TraceCheckSpWp]: Trace formula consists of 166 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-12-02 14:59:19,635 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:59:19,785 INFO L349 Elim1Store]: treesize reduction 14, result has 58.8 percent of original size [2024-12-02 14:59:19,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 32 treesize of output 35 [2024-12-02 14:59:20,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-12-02 14:59:20,074 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 86 treesize of output 90 [2024-12-02 14:59:20,184 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 14:59:20,184 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:59:20,303 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-12-02 14:59:20,303 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1449652274] provided 1 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:20,303 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-12-02 14:59:20,303 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [9, 8] total 19 [2024-12-02 14:59:20,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [243136926] [2024-12-02 14:59:20,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:20,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:59:20,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:20,304 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:59:20,304 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2024-12-02 14:59:20,310 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:20,311 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 225 places, 1383 transitions, 30447 flow. Second operand has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:20,311 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:20,311 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:20,311 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:24,964 INFO L124 PetriNetUnfolderBase]: 6037/12016 cut-off events. [2024-12-02 14:59:24,965 INFO L125 PetriNetUnfolderBase]: For 265134/265154 co-relation queries the response was YES. [2024-12-02 14:59:25,032 INFO L83 FinitePrefix]: Finished finitePrefix Result has 107961 conditions, 12016 events. 6037/12016 cut-off events. For 265134/265154 co-relation queries the response was YES. Maximal size of possible extension queue 282. Compared 92522 event pairs, 492 based on Foata normal form. 48/12061 useless extension candidates. Maximal degree in co-relation 107873. Up to 4616 conditions per place. [2024-12-02 14:59:25,074 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 821 selfloop transitions, 622 changer transitions 0/1448 dead transitions. [2024-12-02 14:59:25,074 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 228 places, 1448 transitions, 34219 flow [2024-12-02 14:59:25,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:59:25,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 14:59:25,075 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 97 transitions. [2024-12-02 14:59:25,076 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.4369369369369369 [2024-12-02 14:59:25,076 INFO L175 Difference]: Start difference. First operand has 225 places, 1383 transitions, 30447 flow. Second operand 6 states and 97 transitions. [2024-12-02 14:59:25,076 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 228 places, 1448 transitions, 34219 flow [2024-12-02 14:59:28,159 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1448 transitions, 32496 flow, removed 146 selfloop flow, removed 11 redundant places. [2024-12-02 14:59:28,180 INFO L231 Difference]: Finished difference. Result has 218 places, 1385 transitions, 30593 flow [2024-12-02 14:59:28,181 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28704, PETRI_DIFFERENCE_MINUEND_PLACES=212, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1381, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=618, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=759, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=30593, PETRI_PLACES=218, PETRI_TRANSITIONS=1385} [2024-12-02 14:59:28,181 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 185 predicate places. [2024-12-02 14:59:28,181 INFO L471 AbstractCegarLoop]: Abstraction has has 218 places, 1385 transitions, 30593 flow [2024-12-02 14:59:28,181 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:28,181 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:28,181 INFO L206 CegarLoopForPetriNet]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 14:59:28,187 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 14:59:28,381 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:28,382 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:28,382 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:28,382 INFO L85 PathProgramCache]: Analyzing trace with hash -1477972128, now seen corresponding path program 1 times [2024-12-02 14:59:28,382 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:28,382 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [940792854] [2024-12-02 14:59:28,382 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:28,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:28,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:28,453 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:28,454 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:28,454 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [940792854] [2024-12-02 14:59:28,454 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [940792854] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:28,454 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 14:59:28,454 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 14:59:28,454 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684614509] [2024-12-02 14:59:28,454 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:28,454 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 14:59:28,454 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:28,455 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 14:59:28,455 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-12-02 14:59:28,456 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 11 out of 37 [2024-12-02 14:59:28,456 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 218 places, 1385 transitions, 30593 flow. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:28,456 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:28,456 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 11 of 37 [2024-12-02 14:59:28,456 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:32,684 INFO L124 PetriNetUnfolderBase]: 5524/11253 cut-off events. [2024-12-02 14:59:32,684 INFO L125 PetriNetUnfolderBase]: For 242194/242432 co-relation queries the response was YES. [2024-12-02 14:59:32,742 INFO L83 FinitePrefix]: Finished finitePrefix Result has 102756 conditions, 11253 events. 5524/11253 cut-off events. For 242194/242432 co-relation queries the response was YES. Maximal size of possible extension queue 288. Compared 88976 event pairs, 1209 based on Foata normal form. 14/11170 useless extension candidates. Maximal degree in co-relation 102677. Up to 9866 conditions per place. [2024-12-02 14:59:32,783 INFO L140 encePairwiseOnDemand]: 31/37 looper letters, 1168 selfloop transitions, 8 changer transitions 26/1353 dead transitions. [2024-12-02 14:59:32,783 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 222 places, 1353 transitions, 31973 flow [2024-12-02 14:59:32,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 14:59:32,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2024-12-02 14:59:32,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 95 transitions. [2024-12-02 14:59:32,784 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5135135135135135 [2024-12-02 14:59:32,784 INFO L175 Difference]: Start difference. First operand has 218 places, 1385 transitions, 30593 flow. Second operand 5 states and 95 transitions. [2024-12-02 14:59:32,784 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 222 places, 1353 transitions, 31973 flow [2024-12-02 14:59:34,994 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 217 places, 1353 transitions, 30868 flow, removed 201 selfloop flow, removed 5 redundant places. [2024-12-02 14:59:35,018 INFO L231 Difference]: Finished difference. Result has 219 places, 1326 transitions, 28005 flow [2024-12-02 14:59:35,019 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=28399, PETRI_DIFFERENCE_MINUEND_PLACES=213, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1345, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=8, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=1337, PETRI_DIFFERENCE_SUBTRAHEND_STATES=5, PETRI_FLOW=28005, PETRI_PLACES=219, PETRI_TRANSITIONS=1326} [2024-12-02 14:59:35,020 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 186 predicate places. [2024-12-02 14:59:35,020 INFO L471 AbstractCegarLoop]: Abstraction has has 219 places, 1326 transitions, 28005 flow [2024-12-02 14:59:35,020 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:35,020 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:35,020 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] [2024-12-02 14:59:35,020 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 14:59:35,020 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:35,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:35,021 INFO L85 PathProgramCache]: Analyzing trace with hash -1280400519, now seen corresponding path program 1 times [2024-12-02 14:59:35,021 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:35,021 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1042941213] [2024-12-02 14:59:35,021 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:35,021 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:35,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:35,232 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:35,232 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1042941213] [2024-12-02 14:59:35,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1042941213] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:35,232 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [395845463] [2024-12-02 14:59:35,232 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:35,232 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:35,233 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:59:35,234 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:59:35,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 14:59:35,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:35,330 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-12-02 14:59:35,331 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:59:35,369 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 13 treesize of output 9 [2024-12-02 14:59:35,410 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:59:35,410 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:59:35,410 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [395845463] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:35,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:59:35,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [10] total 14 [2024-12-02 14:59:35,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236711324] [2024-12-02 14:59:35,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:35,411 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:59:35,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:35,412 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:59:35,412 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2024-12-02 14:59:35,416 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-12-02 14:59:35,417 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 219 places, 1326 transitions, 28005 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:35,417 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:35,417 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-12-02 14:59:35,417 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:39,445 INFO L124 PetriNetUnfolderBase]: 5344/11048 cut-off events. [2024-12-02 14:59:39,445 INFO L125 PetriNetUnfolderBase]: For 228593/229015 co-relation queries the response was YES. [2024-12-02 14:59:39,509 INFO L83 FinitePrefix]: Finished finitePrefix Result has 96647 conditions, 11048 events. 5344/11048 cut-off events. For 228593/229015 co-relation queries the response was YES. Maximal size of possible extension queue 313. Compared 88442 event pairs, 534 based on Foata normal form. 156/11100 useless extension candidates. Maximal degree in co-relation 96567. Up to 3895 conditions per place. [2024-12-02 14:59:39,549 INFO L140 encePairwiseOnDemand]: 28/37 looper letters, 1071 selfloop transitions, 392 changer transitions 0/1629 dead transitions. [2024-12-02 14:59:39,549 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 216 places, 1629 transitions, 37694 flow [2024-12-02 14:59:39,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 14:59:39,550 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6 states. [2024-12-02 14:59:39,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6 states to 6 states and 122 transitions. [2024-12-02 14:59:39,550 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5495495495495496 [2024-12-02 14:59:39,550 INFO L175 Difference]: Start difference. First operand has 219 places, 1326 transitions, 28005 flow. Second operand 6 states and 122 transitions. [2024-12-02 14:59:39,550 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 216 places, 1629 transitions, 37694 flow [2024-12-02 14:59:41,170 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 203 places, 1629 transitions, 36828 flow, removed 84 selfloop flow, removed 13 redundant places. [2024-12-02 14:59:41,190 INFO L231 Difference]: Finished difference. Result has 205 places, 1322 transitions, 27926 flow [2024-12-02 14:59:41,191 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=26957, PETRI_DIFFERENCE_MINUEND_PLACES=198, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=1311, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=382, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=920, PETRI_DIFFERENCE_SUBTRAHEND_STATES=6, PETRI_FLOW=27926, PETRI_PLACES=205, PETRI_TRANSITIONS=1322} [2024-12-02 14:59:41,191 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 172 predicate places. [2024-12-02 14:59:41,191 INFO L471 AbstractCegarLoop]: Abstraction has has 205 places, 1322 transitions, 27926 flow [2024-12-02 14:59:41,191 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:41,191 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:41,192 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] [2024-12-02 14:59:41,197 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 14:59:41,392 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:41,392 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:41,392 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:41,392 INFO L85 PathProgramCache]: Analyzing trace with hash -441529031, now seen corresponding path program 2 times [2024-12-02 14:59:41,393 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:41,393 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1842090809] [2024-12-02 14:59:41,393 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:59:41,393 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:41,407 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:59:41,407 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:41,599 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:41,599 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1842090809] [2024-12-02 14:59:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1842090809] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [325572603] [2024-12-02 14:59:41,600 INFO L95 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-12-02 14:59:41,600 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:41,600 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:59:41,601 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:59:41,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 14:59:41,693 INFO L229 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-12-02 14:59:41,693 INFO L230 tOrderPrioritization]: Conjunction of SSA is unsat [2024-12-02 14:59:41,694 INFO L256 TraceCheckSpWp]: Trace formula consists of 182 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-12-02 14:59:41,695 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:59:41,767 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 11 treesize of output 7 [2024-12-02 14:59:41,789 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 14:59:41,789 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 14:59:41,789 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [325572603] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 14:59:41,789 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 14:59:41,790 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 11 [2024-12-02 14:59:41,790 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [566107965] [2024-12-02 14:59:41,790 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 14:59:41,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 14:59:41,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:41,790 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 14:59:41,790 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2024-12-02 14:59:41,799 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 12 out of 37 [2024-12-02 14:59:41,799 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 205 places, 1322 transitions, 27926 flow. Second operand has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:41,799 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:41,800 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 12 of 37 [2024-12-02 14:59:41,800 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:43,287 INFO L124 PetriNetUnfolderBase]: 1449/3495 cut-off events. [2024-12-02 14:59:43,288 INFO L125 PetriNetUnfolderBase]: For 87307/87465 co-relation queries the response was YES. [2024-12-02 14:59:43,302 INFO L83 FinitePrefix]: Finished finitePrefix Result has 32119 conditions, 3495 events. 1449/3495 cut-off events. For 87307/87465 co-relation queries the response was YES. Maximal size of possible extension queue 101. Compared 24669 event pairs, 96 based on Foata normal form. 144/3601 useless extension candidates. Maximal degree in co-relation 32044. Up to 1005 conditions per place. [2024-12-02 14:59:43,314 INFO L140 encePairwiseOnDemand]: 27/37 looper letters, 378 selfloop transitions, 387 changer transitions 0/864 dead transitions. [2024-12-02 14:59:43,314 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 209 places, 864 transitions, 21047 flow [2024-12-02 14:59:43,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 14:59:43,314 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7 states. [2024-12-02 14:59:43,314 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7 states to 7 states and 134 transitions. [2024-12-02 14:59:43,315 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.5173745173745173 [2024-12-02 14:59:43,315 INFO L175 Difference]: Start difference. First operand has 205 places, 1322 transitions, 27926 flow. Second operand 7 states and 134 transitions. [2024-12-02 14:59:43,315 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 209 places, 864 transitions, 21047 flow [2024-12-02 14:59:43,670 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 180 places, 864 transitions, 17472 flow, removed 178 selfloop flow, removed 29 redundant places. [2024-12-02 14:59:43,680 INFO L231 Difference]: Finished difference. Result has 182 places, 851 transitions, 16893 flow [2024-12-02 14:59:43,680 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=14391, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=791, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=327, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=462, PETRI_DIFFERENCE_SUBTRAHEND_STATES=7, PETRI_FLOW=16893, PETRI_PLACES=182, PETRI_TRANSITIONS=851} [2024-12-02 14:59:43,681 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 149 predicate places. [2024-12-02 14:59:43,681 INFO L471 AbstractCegarLoop]: Abstraction has has 182 places, 851 transitions, 16893 flow [2024-12-02 14:59:43,681 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 14.833333333333334) internal successors, (89), 6 states have internal predecessors, (89), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:43,681 INFO L198 CegarLoopForPetriNet]: Found error trace [2024-12-02 14:59:43,681 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] [2024-12-02 14:59:43,686 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-12-02 14:59:43,881 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:43,881 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting workerErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES, workerErr1ASSERT_VIOLATIONERROR_FUNCTION, workerErr0ASSERT_VIOLATIONERROR_FUNCTION (and 2 more)] === [2024-12-02 14:59:43,882 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 14:59:43,882 INFO L85 PathProgramCache]: Analyzing trace with hash 531075098, now seen corresponding path program 1 times [2024-12-02 14:59:43,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 14:59:43,882 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1597260193] [2024-12-02 14:59:43,882 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:43,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 14:59:43,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:44,044 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:44,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 14:59:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1597260193] [2024-12-02 14:59:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1597260193] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 14:59:44,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [933842665] [2024-12-02 14:59:44,044 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 14:59:44,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:44,044 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 14:59:44,046 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 14:59:44,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 14:59:44,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 14:59:44,130 INFO L256 TraceCheckSpWp]: Trace formula consists of 188 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-12-02 14:59:44,131 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 14:59:44,245 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 25 treesize of output 13 [2024-12-02 14:59:44,322 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:44,322 INFO L312 TraceCheckSpWp]: Computing backward predicates... [2024-12-02 14:59:44,408 INFO L349 Elim1Store]: treesize reduction 10, result has 9.1 percent of original size [2024-12-02 14:59:44,409 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 41 treesize of output 29 [2024-12-02 14:59:44,416 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 14:59:44,416 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [933842665] provided 0 perfect and 2 imperfect interpolant sequences [2024-12-02 14:59:44,416 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-12-02 14:59:44,416 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 9, 9] total 21 [2024-12-02 14:59:44,417 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447799718] [2024-12-02 14:59:44,417 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-12-02 14:59:44,417 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-12-02 14:59:44,417 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 14:59:44,417 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-12-02 14:59:44,417 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-12-02 14:59:44,424 INFO L469 CegarLoopForPetriNet]: Number of universal loopers: 7 out of 37 [2024-12-02 14:59:44,424 INFO L103 encePairwiseOnDemand]: Start differencePairwiseOnDemand. First operand has 182 places, 851 transitions, 16893 flow. Second operand has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:44,424 INFO L112 encePairwiseOnDemand]: Universal subtrahend loopers provided by user. [2024-12-02 14:59:44,424 INFO L113 encePairwiseOnDemand]: Number of universal subtrahend loopers: 7 of 37 [2024-12-02 14:59:44,424 INFO L73 FinitePrefix]: Start finitePrefix. Operand will be constructed on-demand [2024-12-02 14:59:45,815 INFO L124 PetriNetUnfolderBase]: 1549/3602 cut-off events. [2024-12-02 14:59:45,815 INFO L125 PetriNetUnfolderBase]: For 57973/58003 co-relation queries the response was YES. [2024-12-02 14:59:45,827 INFO L83 FinitePrefix]: Finished finitePrefix Result has 30188 conditions, 3602 events. 1549/3602 cut-off events. For 57973/58003 co-relation queries the response was YES. Maximal size of possible extension queue 97. Compared 24905 event pairs, 55 based on Foata normal form. 42/3643 useless extension candidates. Maximal degree in co-relation 30124. Up to 1325 conditions per place. [2024-12-02 14:59:45,831 INFO L140 encePairwiseOnDemand]: 26/37 looper letters, 0 selfloop transitions, 0 changer transitions 934/934 dead transitions. [2024-12-02 14:59:45,831 INFO L145 encePairwiseOnDemand]: Finished differencePairwiseOnDemand. Result has 189 places, 934 transitions, 20090 flow [2024-12-02 14:59:45,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-12-02 14:59:45,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10 states. [2024-12-02 14:59:45,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 129 transitions. [2024-12-02 14:59:45,832 INFO L514 CegarLoopForPetriNet]: DFA transition density 0.34864864864864864 [2024-12-02 14:59:45,832 INFO L175 Difference]: Start difference. First operand has 182 places, 851 transitions, 16893 flow. Second operand 10 states and 129 transitions. [2024-12-02 14:59:45,832 INFO L82 GeneralOperation]: Start removeRedundantFlow. Operand has 189 places, 934 transitions, 20090 flow [2024-12-02 14:59:46,088 INFO L88 GeneralOperation]: Finished removeRedundantFlow, result has has 183 places, 934 transitions, 19110 flow, removed 264 selfloop flow, removed 6 redundant places. [2024-12-02 14:59:46,095 INFO L231 Difference]: Finished difference. Result has 183 places, 0 transitions, 0 flow [2024-12-02 14:59:46,095 INFO L262 CegarLoopForPetriNet]: {PETRI_ALPHABET=37, PETRI_DIFFERENCE_MINUEND_FLOW=15990, PETRI_DIFFERENCE_MINUEND_PLACES=174, PETRI_DIFFERENCE_MINUEND_TRANSITIONS=849, PETRI_DIFFERENCE_SUBTRAHEND_LETTERS_WITH_MORE_CHANGERS_THAN_LOOPERS=0, PETRI_DIFFERENCE_SUBTRAHEND_LOOPER_ONLY_LETTERS=849, PETRI_DIFFERENCE_SUBTRAHEND_STATES=10, PETRI_FLOW=0, PETRI_PLACES=183, PETRI_TRANSITIONS=0} [2024-12-02 14:59:46,096 INFO L279 CegarLoopForPetriNet]: 33 programPoint places, 150 predicate places. [2024-12-02 14:59:46,096 INFO L471 AbstractCegarLoop]: Abstraction has has 183 places, 0 transitions, 0 flow [2024-12-02 14:59:46,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 21 states have (on average 9.523809523809524) internal successors, (200), 21 states have internal predecessors, (200), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-12-02 14:59:46,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0INUSE_VIOLATIONSUFFICIENT_THREAD_INSTANCES (4 of 5 remaining) [2024-12-02 14:59:46,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (3 of 5 remaining) [2024-12-02 14:59:46,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (2 of 5 remaining) [2024-12-02 14:59:46,099 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr1ASSERT_VIOLATIONERROR_FUNCTION (1 of 5 remaining) [2024-12-02 14:59:46,100 INFO L782 garLoopResultBuilder]: Registering result SAFE for location workerErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 5 remaining) [2024-12-02 14:59:46,106 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 14:59:46,300 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 14:59:46,300 INFO L422 BasicCegarLoop]: Path program histogram: [7, 7, 2, 1, 1, 1, 1, 1] [2024-12-02 14:59:46,304 INFO L241 ceAbstractionStarter]: Analysis of concurrent program completed with 1 thread instances [2024-12-02 14:59:46,304 INFO L170 ceAbstractionStarter]: Computing trace abstraction results [2024-12-02 14:59:46,309 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.12 02:59:46 BasicIcfg [2024-12-02 14:59:46,309 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-12-02 14:59:46,310 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-12-02 14:59:46,310 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-12-02 14:59:46,310 INFO L274 PluginConnector]: Witness Printer initialized [2024-12-02 14:59:46,311 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 02:58:54" (3/4) ... [2024-12-02 14:59:46,312 INFO L146 WitnessPrinter]: Generating witness for correct program [2024-12-02 14:59:46,315 INFO L361 RCFGBacktranslator]: Ignoring RootEdge to procedure worker [2024-12-02 14:59:46,317 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 46 nodes and edges [2024-12-02 14:59:46,317 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2024-12-02 14:59:46,317 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 7 nodes and edges [2024-12-02 14:59:46,318 INFO L919 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-12-02 14:59:46,381 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/witness.graphml [2024-12-02 14:59:46,382 INFO L149 WitnessManager]: Wrote witness to /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/witness.yml [2024-12-02 14:59:46,382 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-12-02 14:59:46,383 INFO L158 Benchmark]: Toolchain (without parser) took 53022.88ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 116.6MB in the beginning and 596.3MB in the end (delta: -479.7MB). Peak memory consumption was 719.6MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,383 INFO L158 Benchmark]: CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:59:46,383 INFO L158 Benchmark]: CACSL2BoogieTranslator took 327.19ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 96.2MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,383 INFO L158 Benchmark]: Boogie Procedure Inliner took 38.15ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 94.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,384 INFO L158 Benchmark]: Boogie Preprocessor took 41.37ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. [2024-12-02 14:59:46,384 INFO L158 Benchmark]: RCFGBuilder took 496.22ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 61.4MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,384 INFO L158 Benchmark]: TraceAbstraction took 52042.01ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 60.8MB in the beginning and 600.6MB in the end (delta: -539.8MB). Peak memory consumption was 652.5MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,384 INFO L158 Benchmark]: Witness Printer took 72.29ms. Allocated memory is still 1.3GB. Free memory was 600.6MB in the beginning and 596.3MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2024-12-02 14:59:46,386 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.37ms. Allocated memory is still 142.6MB. Free memory is still 83.3MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 327.19ms. Allocated memory is still 142.6MB. Free memory was 116.6MB in the beginning and 96.2MB in the end (delta: 20.3MB). Peak memory consumption was 16.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 38.15ms. Allocated memory is still 142.6MB. Free memory was 96.2MB in the beginning and 94.4MB in the end (delta: 1.8MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Preprocessor took 41.37ms. Allocated memory is still 142.6MB. Free memory was 94.4MB in the beginning and 92.4MB in the end (delta: 2.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 496.22ms. Allocated memory is still 142.6MB. Free memory was 92.2MB in the beginning and 61.4MB in the end (delta: 30.8MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * TraceAbstraction took 52042.01ms. Allocated memory was 142.6MB in the beginning and 1.3GB in the end (delta: 1.2GB). Free memory was 60.8MB in the beginning and 600.6MB in the end (delta: -539.8MB). Peak memory consumption was 652.5MB. Max. memory is 16.1GB. * Witness Printer took 72.29ms. Allocated memory is still 1.3GB. Free memory was 600.6MB in the beginning and 596.3MB in the end (delta: 4.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - PositiveResult [Line: 19]: a call to reach_error is unreachable For all program executions holds that a call to reach_error is unreachable at this location - StatisticsResult: Ultimate Automizer benchmark data with 1 thread instances CFG has 3 procedures, 54 locations, 5 error locations. Started 1 CEGAR loops. EmptinessCheckTime: 0.0s, RemoveRedundantFlowTime: 0.0s, RemoveRedundantFlowUnfoldingTime: 0.0s, BackfoldingTime: 0.0s, BackfoldingUnfoldingTime: 0.0s, FlowIncreaseByBackfolding: 0, BasicCegarLoop: OverallTime: 52.0s, OverallIterations: 21, TraceHistogramMax: 2, PathProgramHistogramMax: 7, EmptinessCheckTime: 0.0s, AutomataDifference: 43.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.1s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1489 SdHoareTripleChecker+Valid, 3.7s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1437 mSDsluCounter, 421 SdHoareTripleChecker+Invalid, 3.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 349 mSDsCounter, 101 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4921 IncrementalHoareTripleChecker+Invalid, 5022 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 101 mSolverCounterUnsat, 72 mSDtfsCounter, 4921 mSolverCounterSat, 0.1s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 437 GetRequests, 200 SyntacticMatches, 6 SemanticMatches, 231 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 685 ImplicationChecksByTransitivity, 2.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30593occurred in iteration=17, InterpolantAutomatonStates: 186, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 5.9s InterpolantComputationTime, 489 NumberOfCodeBlocks, 463 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 527 ConstructedInterpolants, 2 QuantifiedInterpolants, 3896 SizeOfPredicates, 63 NumberOfNonLiveVariables, 851 ConjunctsInSsa, 129 ConjunctsInUnsatCore, 29 InterpolantComputations, 20 PerfectInterpolantSequences, 31/56 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available, ConComCheckerStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 2 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-12-02 14:59:46,400 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9365dfa1-3d08-4558-bb25-8de7376bdd95/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE