./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version d790fecc Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/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_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/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_8663e36d-f4a2-4143-9051-32ff263c2399/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 b60f36c6abb85551baa468c8faf905605a37519376312e75fd6944689b1d0b8d --- Real Ultimate output --- This is Ultimate 0.3.0-dev-d790fec [2024-12-02 10:51:13,869 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-12-02 10:51:13,925 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-12-02 10:51:13,929 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-12-02 10:51:13,929 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-12-02 10:51:13,950 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-12-02 10:51:13,950 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-12-02 10:51:13,951 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-12-02 10:51:13,951 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-12-02 10:51:13,951 INFO L153 SettingsManager]: * Use memory slicer=true [2024-12-02 10:51:13,951 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-12-02 10:51:13,951 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-12-02 10:51:13,952 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Use SBE=true [2024-12-02 10:51:13,952 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * sizeof long=4 [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-12-02 10:51:13,952 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * sizeof long double=12 [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Behaviour of calls to undefined functions=OVERAPPROXIMATE_BEHAVIOUR [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Use constant arrays=true [2024-12-02 10:51:13,953 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:51:13,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:51:13,954 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:51:13,954 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Compute procedure contracts=false [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-12-02 10:51:13,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-12-02 10:51:13,955 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-12-02 10:51:13,955 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-12-02 10:51:13,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-12-02 10:51:13,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-12-02 10:51:13,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-12-02 10:51:13,955 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_8663e36d-f4a2-4143-9051-32ff263c2399/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 -> b60f36c6abb85551baa468c8faf905605a37519376312e75fd6944689b1d0b8d [2024-12-02 10:51:14,170 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-12-02 10:51:14,177 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-12-02 10:51:14,180 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-12-02 10:51:14,181 INFO L270 PluginConnector]: Initializing CDTParser... [2024-12-02 10:51:14,181 INFO L274 PluginConnector]: CDTParser initialized [2024-12-02 10:51:14,182 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/../../sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c [2024-12-02 10:51:16,840 INFO L533 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/data/b646a0f80/64f99b2edcfe4601ad24aa24d4de2751/FLAG266f95563 [2024-12-02 10:51:17,155 INFO L384 CDTParser]: Found 1 translation units. [2024-12-02 10:51:17,156 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c [2024-12-02 10:51:17,172 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/data/b646a0f80/64f99b2edcfe4601ad24aa24d4de2751/FLAG266f95563 [2024-12-02 10:51:17,186 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/data/b646a0f80/64f99b2edcfe4601ad24aa24d4de2751 [2024-12-02 10:51:17,189 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-12-02 10:51:17,190 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-12-02 10:51:17,191 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-12-02 10:51:17,191 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-12-02 10:51:17,196 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-12-02 10:51:17,197 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,197 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@473a9c2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17, skipping insertion in model container [2024-12-02 10:51:17,198 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,236 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-12-02 10:51:17,556 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_8663e36d-f4a2-4143-9051-32ff263c2399/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c[32398,32411] [2024-12-02 10:51:17,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:51:17,696 INFO L200 MainTranslator]: Completed pre-run [2024-12-02 10:51:17,706 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2024-12-02 10:51:17,707 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [452] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1120] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [1476] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1485] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [2984] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification3_spec.i","") [3102] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [3288] [2024-12-02 10:51:17,708 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3303] [2024-12-02 10:51:17,761 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_8663e36d-f4a2-4143-9051-32ff263c2399/sv-benchmarks/c/product-lines/elevator_spec3_product18.cil.c[32398,32411] [2024-12-02 10:51:17,811 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-12-02 10:51:17,838 INFO L204 MainTranslator]: Completed translation [2024-12-02 10:51:17,838 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17 WrapperNode [2024-12-02 10:51:17,838 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-12-02 10:51:17,839 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-12-02 10:51:17,839 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-12-02 10:51:17,839 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-12-02 10:51:17,846 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,867 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,906 INFO L138 Inliner]: procedures = 90, calls = 344, calls flagged for inlining = 25, calls inlined = 21, statements flattened = 817 [2024-12-02 10:51:17,906 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-12-02 10:51:17,907 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-12-02 10:51:17,907 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-12-02 10:51:17,907 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-12-02 10:51:17,917 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,917 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,923 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,948 INFO L175 MemorySlicer]: Split 81 memory accesses to 20 slices as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. 9 percent of accesses are in the largest equivalence class. The 81 initializations are split as follows [2, 4, 4, 4, 2, 4, 4, 5, 3, 3, 5, 7, 4, 4, 4, 4, 4, 6, 4, 4]. The 0 writes are split as follows [0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0]. [2024-12-02 10:51:17,948 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,949 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,965 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,968 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,980 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,986 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,990 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:17,998 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-12-02 10:51:17,999 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-12-02 10:51:17,999 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-12-02 10:51:17,999 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-12-02 10:51:18,000 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (1/1) ... [2024-12-02 10:51:18,007 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-12-02 10:51:18,032 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:18,046 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-12-02 10:51:18,049 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-12-02 10:51:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-12-02 10:51:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2024-12-02 10:51:18,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2024-12-02 10:51:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-12-02 10:51:18,074 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-12-02 10:51:18,074 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-12-02 10:51:18,075 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-12-02 10:51:18,075 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure initTopDown [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure initTopDown [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure initFloors [2024-12-02 10:51:18,076 INFO L138 BoogieDeclarations]: Found implementation of procedure initFloors [2024-12-02 10:51:18,076 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-12-02 10:51:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-12-02 10:51:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-12-02 10:51:18,077 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2024-12-02 10:51:18,077 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2024-12-02 10:51:18,078 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-12-02 10:51:18,078 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-12-02 10:51:18,078 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-12-02 10:51:18,079 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-12-02 10:51:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-12-02 10:51:18,079 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-12-02 10:51:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-12-02 10:51:18,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-12-02 10:51:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-12-02 10:51:18,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-12-02 10:51:18,079 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-12-02 10:51:18,079 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-12-02 10:51:18,233 INFO L234 CfgBuilder]: Building ICFG [2024-12-02 10:51:18,235 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2024-12-02 10:51:19,346 INFO L? ?]: Removed 439 outVars from TransFormulas that were not future-live. [2024-12-02 10:51:19,346 INFO L283 CfgBuilder]: Performing block encoding [2024-12-02 10:51:19,368 INFO L307 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-12-02 10:51:19,368 INFO L312 CfgBuilder]: Removed 2 assume(true) statements. [2024-12-02 10:51:19,369 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:51:19 BoogieIcfgContainer [2024-12-02 10:51:19,369 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-12-02 10:51:19,371 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-12-02 10:51:19,371 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-12-02 10:51:19,376 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-12-02 10:51:19,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.12 10:51:17" (1/3) ... [2024-12-02 10:51:19,376 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8ab0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:51:19, skipping insertion in model container [2024-12-02 10:51:19,376 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.12 10:51:17" (2/3) ... [2024-12-02 10:51:19,377 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1c8ab0b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.12 10:51:19, skipping insertion in model container [2024-12-02 10:51:19,377 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.12 10:51:19" (3/3) ... [2024-12-02 10:51:19,378 INFO L128 eAbstractionObserver]: Analyzing ICFG elevator_spec3_product18.cil.c [2024-12-02 10:51:19,393 INFO L216 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-12-02 10:51:19,395 INFO L151 ceAbstractionStarter]: Applying trace abstraction to ICFG elevator_spec3_product18.cil.c that has 26 procedures, 568 locations, 1 initial locations, 1 loop locations, and 1 error locations. [2024-12-02 10:51:19,465 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-12-02 10:51:19,475 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;@496bcd76, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-12-02 10:51:19,476 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-12-02 10:51:19,481 INFO L276 IsEmpty]: Start isEmpty. Operand has 568 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 459 states have internal predecessors, (740), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) [2024-12-02 10:51:19,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2024-12-02 10:51:19,492 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:19,492 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:19,493 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:19,497 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:19,498 INFO L85 PathProgramCache]: Analyzing trace with hash -1694182699, now seen corresponding path program 1 times [2024-12-02 10:51:19,505 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:19,505 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [916824190] [2024-12-02 10:51:19,505 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:19,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:19,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:20,113 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:20,114 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:20,114 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [916824190] [2024-12-02 10:51:20,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [916824190] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:20,115 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:20,115 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:51:20,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1979934719] [2024-12-02 10:51:20,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:20,120 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:51:20,120 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:20,139 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:51:20,140 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:20,143 INFO L87 Difference]: Start difference. First operand has 568 states, 439 states have (on average 1.6856492027334853) internal successors, (740), 459 states have internal predecessors, (740), 102 states have call successors, (102), 25 states have call predecessors, (102), 25 states have return successors, (102), 98 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:20,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:20,375 INFO L93 Difference]: Finished difference Result 1133 states and 1900 transitions. [2024-12-02 10:51:20,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:51:20,378 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 63 [2024-12-02 10:51:20,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:20,395 INFO L225 Difference]: With dead ends: 1133 [2024-12-02 10:51:20,395 INFO L226 Difference]: Without dead ends: 573 [2024-12-02 10:51:20,403 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:51:20,406 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 91 mSDsluCounter, 4550 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 5477 SdHoareTripleChecker+Invalid, 77 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:20,406 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [92 Valid, 5477 Invalid, 77 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:51:20,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 573 states. [2024-12-02 10:51:20,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 573 to 571. [2024-12-02 10:51:20,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 462 states have internal predecessors, (741), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-12-02 10:51:20,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 946 transitions. [2024-12-02 10:51:20,500 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 946 transitions. Word has length 63 [2024-12-02 10:51:20,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:20,500 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 946 transitions. [2024-12-02 10:51:20,501 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:20,501 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 946 transitions. [2024-12-02 10:51:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 10:51:20,505 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:20,505 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:20,505 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-12-02 10:51:20,505 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:20,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:20,506 INFO L85 PathProgramCache]: Analyzing trace with hash 439534225, now seen corresponding path program 1 times [2024-12-02 10:51:20,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:20,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1198180103] [2024-12-02 10:51:20,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:20,506 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:20,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:20,846 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:20,846 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:20,846 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1198180103] [2024-12-02 10:51:20,846 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1198180103] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:20,846 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:20,846 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:51:20,847 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096290778] [2024-12-02 10:51:20,847 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:20,848 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:51:20,848 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:20,849 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:51:20,849 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:20,849 INFO L87 Difference]: Start difference. First operand 571 states and 946 transitions. Second operand has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:21,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:21,003 INFO L93 Difference]: Finished difference Result 1137 states and 1895 transitions. [2024-12-02 10:51:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:51:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 64 [2024-12-02 10:51:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:21,011 INFO L225 Difference]: With dead ends: 1137 [2024-12-02 10:51:21,011 INFO L226 Difference]: Without dead ends: 582 [2024-12-02 10:51:21,015 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:51:21,016 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 90 mSDsluCounter, 4544 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 5472 SdHoareTripleChecker+Invalid, 82 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:21,016 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 5472 Invalid, 82 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:51:21,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 582 states. [2024-12-02 10:51:21,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 582 to 571. [2024-12-02 10:51:21,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 571 states, 442 states have (on average 1.6764705882352942) internal successors, (741), 462 states have internal predecessors, (741), 103 states have call successors, (103), 25 states have call predecessors, (103), 25 states have return successors, (102), 97 states have call predecessors, (102), 100 states have call successors, (102) [2024-12-02 10:51:21,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 571 states to 571 states and 946 transitions. [2024-12-02 10:51:21,059 INFO L78 Accepts]: Start accepts. Automaton has 571 states and 946 transitions. Word has length 64 [2024-12-02 10:51:21,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:21,060 INFO L471 AbstractCegarLoop]: Abstraction has 571 states and 946 transitions. [2024-12-02 10:51:21,060 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:21,060 INFO L276 IsEmpty]: Start isEmpty. Operand 571 states and 946 transitions. [2024-12-02 10:51:21,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2024-12-02 10:51:21,062 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:21,062 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:21,063 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-12-02 10:51:21,063 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:21,063 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:21,063 INFO L85 PathProgramCache]: Analyzing trace with hash -1736672470, now seen corresponding path program 1 times [2024-12-02 10:51:21,063 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:21,063 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [438949615] [2024-12-02 10:51:21,064 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:21,064 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:21,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:21,230 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:21,230 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:21,230 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [438949615] [2024-12-02 10:51:21,231 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [438949615] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:21,231 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:21,231 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:21,231 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1497730501] [2024-12-02 10:51:21,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:21,231 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:21,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:21,232 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:21,232 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:21,232 INFO L87 Difference]: Start difference. First operand 571 states and 946 transitions. Second operand has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:21,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:21,313 INFO L93 Difference]: Finished difference Result 1124 states and 1873 transitions. [2024-12-02 10:51:21,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:51:21,313 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 64 [2024-12-02 10:51:21,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:21,319 INFO L225 Difference]: With dead ends: 1124 [2024-12-02 10:51:21,319 INFO L226 Difference]: Without dead ends: 541 [2024-12-02 10:51:21,323 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:51:21,324 INFO L435 NwaCegarLoop]: 916 mSDtfsCounter, 14 mSDsluCounter, 1827 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2743 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:21,324 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2743 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:21,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 541 states. [2024-12-02 10:51:21,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 541 to 541. [2024-12-02 10:51:21,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 415 states have (on average 1.6602409638554216) internal successors, (689), 433 states have internal predecessors, (689), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:21,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 890 transitions. [2024-12-02 10:51:21,357 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 890 transitions. Word has length 64 [2024-12-02 10:51:21,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:21,358 INFO L471 AbstractCegarLoop]: Abstraction has 541 states and 890 transitions. [2024-12-02 10:51:21,358 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.5) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (9), 2 states have call predecessors, (9), 3 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:21,358 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 890 transitions. [2024-12-02 10:51:21,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2024-12-02 10:51:21,359 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:21,359 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:21,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-12-02 10:51:21,360 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:21,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:21,360 INFO L85 PathProgramCache]: Analyzing trace with hash 1146914937, now seen corresponding path program 1 times [2024-12-02 10:51:21,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:21,361 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1153516542] [2024-12-02 10:51:21,361 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:21,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:21,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:21,642 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:21,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:21,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1153516542] [2024-12-02 10:51:21,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1153516542] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:21,643 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:21,643 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:51:21,643 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405931651] [2024-12-02 10:51:21,643 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:21,643 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:51:21,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:21,644 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:51:21,644 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:21,644 INFO L87 Difference]: Start difference. First operand 541 states and 890 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:21,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:21,738 INFO L93 Difference]: Finished difference Result 1075 states and 1779 transitions. [2024-12-02 10:51:21,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:51:21,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 65 [2024-12-02 10:51:21,738 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:21,743 INFO L225 Difference]: With dead ends: 1075 [2024-12-02 10:51:21,743 INFO L226 Difference]: Without dead ends: 535 [2024-12-02 10:51:21,746 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:51:21,747 INFO L435 NwaCegarLoop]: 880 mSDtfsCounter, 63 mSDsluCounter, 4342 mSDsCounter, 0 mSdLazyCounter, 54 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 5222 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 54 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:21,747 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [64 Valid, 5222 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 54 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:21,749 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 535 states. [2024-12-02 10:51:21,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 535 to 535. [2024-12-02 10:51:21,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 535 states, 409 states have (on average 1.6528117359413204) internal successors, (676), 427 states have internal predecessors, (676), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:21,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 535 states to 535 states and 877 transitions. [2024-12-02 10:51:21,772 INFO L78 Accepts]: Start accepts. Automaton has 535 states and 877 transitions. Word has length 65 [2024-12-02 10:51:21,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:21,772 INFO L471 AbstractCegarLoop]: Abstraction has 535 states and 877 transitions. [2024-12-02 10:51:21,773 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:21,773 INFO L276 IsEmpty]: Start isEmpty. Operand 535 states and 877 transitions. [2024-12-02 10:51:21,774 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 10:51:21,774 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:21,774 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:21,774 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-12-02 10:51:21,774 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:21,774 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:21,775 INFO L85 PathProgramCache]: Analyzing trace with hash 587546037, now seen corresponding path program 1 times [2024-12-02 10:51:21,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:21,775 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1618483637] [2024-12-02 10:51:21,775 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:21,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:21,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:21,955 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:21,955 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:21,955 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1618483637] [2024-12-02 10:51:21,955 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1618483637] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:21,955 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:21,956 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:51:21,956 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [480353648] [2024-12-02 10:51:21,956 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:21,956 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:51:21,956 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:21,957 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:51:21,957 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:21,957 INFO L87 Difference]: Start difference. First operand 535 states and 877 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:22,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:22,046 INFO L93 Difference]: Finished difference Result 1063 states and 1753 transitions. [2024-12-02 10:51:22,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:51:22,046 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-12-02 10:51:22,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:22,051 INFO L225 Difference]: With dead ends: 1063 [2024-12-02 10:51:22,052 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:22,054 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:51:22,055 INFO L435 NwaCegarLoop]: 868 mSDtfsCounter, 49 mSDsluCounter, 4294 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 5162 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:22,055 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 5162 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:22,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:22,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:22,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6451612903225807) internal successors, (663), 421 states have internal predecessors, (663), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:22,080 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 864 transitions. [2024-12-02 10:51:22,080 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 864 transitions. Word has length 66 [2024-12-02 10:51:22,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:22,081 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 864 transitions. [2024-12-02 10:51:22,081 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:22,081 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 864 transitions. [2024-12-02 10:51:22,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2024-12-02 10:51:22,082 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:22,082 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:22,082 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-12-02 10:51:22,082 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,083 INFO L85 PathProgramCache]: Analyzing trace with hash -1074793098, now seen corresponding path program 1 times [2024-12-02 10:51:22,083 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,083 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [23938565] [2024-12-02 10:51:22,083 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,083 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:22,239 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:22,239 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:22,239 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [23938565] [2024-12-02 10:51:22,239 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [23938565] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:22,239 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:22,239 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:51:22,239 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739418180] [2024-12-02 10:51:22,239 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:22,240 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:51:22,240 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:22,240 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:51:22,240 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:22,240 INFO L87 Difference]: Start difference. First operand 529 states and 864 transitions. Second operand has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:22,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:22,317 INFO L93 Difference]: Finished difference Result 1051 states and 1727 transitions. [2024-12-02 10:51:22,317 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-12-02 10:51:22,318 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 66 [2024-12-02 10:51:22,318 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:22,323 INFO L225 Difference]: With dead ends: 1051 [2024-12-02 10:51:22,323 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:22,326 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-12-02 10:51:22,326 INFO L435 NwaCegarLoop]: 856 mSDtfsCounter, 24 mSDsluCounter, 4258 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 5114 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:22,327 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 5114 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:22,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:22,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:22,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6426799007444168) internal successors, (662), 421 states have internal predecessors, (662), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:22,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 863 transitions. [2024-12-02 10:51:22,352 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 863 transitions. Word has length 66 [2024-12-02 10:51:22,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:22,352 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 863 transitions. [2024-12-02 10:51:22,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.0) internal successors, (48), 6 states have internal predecessors, (48), 3 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:22,353 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 863 transitions. [2024-12-02 10:51:22,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2024-12-02 10:51:22,354 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:22,354 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:22,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-12-02 10:51:22,354 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,354 INFO L85 PathProgramCache]: Analyzing trace with hash -586355171, now seen corresponding path program 1 times [2024-12-02 10:51:22,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,354 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698772441] [2024-12-02 10:51:22,355 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:22,484 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:22,484 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:22,484 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698772441] [2024-12-02 10:51:22,484 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698772441] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:22,484 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:22,484 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:22,484 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1936499397] [2024-12-02 10:51:22,484 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:22,484 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:22,484 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:22,485 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:22,485 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,485 INFO L87 Difference]: Start difference. First operand 529 states and 863 transitions. Second operand has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:22,537 INFO L93 Difference]: Finished difference Result 1042 states and 1712 transitions. [2024-12-02 10:51:22,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:51:22,537 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 67 [2024-12-02 10:51:22,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:22,543 INFO L225 Difference]: With dead ends: 1042 [2024-12-02 10:51:22,543 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:22,545 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,546 INFO L435 NwaCegarLoop]: 848 mSDtfsCounter, 15 mSDsluCounter, 1681 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 2529 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:22,546 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 2529 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:22,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:22,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:22,563 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6401985111662531) internal successors, (661), 421 states have internal predecessors, (661), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:22,567 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 862 transitions. [2024-12-02 10:51:22,568 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 862 transitions. Word has length 67 [2024-12-02 10:51:22,568 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:22,569 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 862 transitions. [2024-12-02 10:51:22,569 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.25) internal successors, (49), 4 states have internal predecessors, (49), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,569 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 862 transitions. [2024-12-02 10:51:22,570 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-12-02 10:51:22,570 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:22,570 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:22,570 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-12-02 10:51:22,570 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,570 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,570 INFO L85 PathProgramCache]: Analyzing trace with hash -1415085163, now seen corresponding path program 1 times [2024-12-02 10:51:22,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,571 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120570187] [2024-12-02 10:51:22,571 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,571 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:22,678 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:22,678 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:22,678 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120570187] [2024-12-02 10:51:22,678 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120570187] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:22,678 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:22,678 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:22,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911034021] [2024-12-02 10:51:22,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:22,679 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:22,679 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:22,679 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:22,679 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,679 INFO L87 Difference]: Start difference. First operand 529 states and 862 transitions. Second operand has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:22,730 INFO L93 Difference]: Finished difference Result 1042 states and 1710 transitions. [2024-12-02 10:51:22,730 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:51:22,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 68 [2024-12-02 10:51:22,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:22,735 INFO L225 Difference]: With dead ends: 1042 [2024-12-02 10:51:22,735 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:22,738 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,738 INFO L435 NwaCegarLoop]: 849 mSDtfsCounter, 14 mSDsluCounter, 1682 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 2531 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:22,739 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 2531 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:22,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:22,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:22,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6377171215880892) internal successors, (660), 421 states have internal predecessors, (660), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:22,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 861 transitions. [2024-12-02 10:51:22,760 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 861 transitions. Word has length 68 [2024-12-02 10:51:22,760 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:22,760 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 861 transitions. [2024-12-02 10:51:22,761 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.5) internal successors, (50), 4 states have internal predecessors, (50), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,761 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 861 transitions. [2024-12-02 10:51:22,762 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2024-12-02 10:51:22,762 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:22,762 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:22,762 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-12-02 10:51:22,762 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,762 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,762 INFO L85 PathProgramCache]: Analyzing trace with hash -1298441246, now seen corresponding path program 1 times [2024-12-02 10:51:22,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1167507900] [2024-12-02 10:51:22,763 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:22,870 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:22,870 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:22,870 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1167507900] [2024-12-02 10:51:22,870 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1167507900] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:22,870 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:22,870 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:22,870 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443601320] [2024-12-02 10:51:22,870 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:22,871 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:22,871 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:22,871 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:22,871 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,871 INFO L87 Difference]: Start difference. First operand 529 states and 861 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:22,914 INFO L93 Difference]: Finished difference Result 1042 states and 1708 transitions. [2024-12-02 10:51:22,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:51:22,915 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 69 [2024-12-02 10:51:22,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:22,919 INFO L225 Difference]: With dead ends: 1042 [2024-12-02 10:51:22,919 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:22,922 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:22,923 INFO L435 NwaCegarLoop]: 850 mSDtfsCounter, 13 mSDsluCounter, 1683 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2533 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:22,923 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2533 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:22,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:22,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:22,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6352357320099256) internal successors, (659), 421 states have internal predecessors, (659), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:22,943 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 860 transitions. [2024-12-02 10:51:22,944 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 860 transitions. Word has length 69 [2024-12-02 10:51:22,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:22,944 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 860 transitions. [2024-12-02 10:51:22,945 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:22,945 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 860 transitions. [2024-12-02 10:51:22,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2024-12-02 10:51:22,946 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:22,946 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:22,946 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-12-02 10:51:22,946 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:22,946 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:22,946 INFO L85 PathProgramCache]: Analyzing trace with hash -1939977222, now seen corresponding path program 1 times [2024-12-02 10:51:22,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:22,946 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [796442030] [2024-12-02 10:51:22,946 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:22,946 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:22,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:23,044 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:23,044 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:23,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [796442030] [2024-12-02 10:51:23,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [796442030] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:23,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:23,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:23,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624244876] [2024-12-02 10:51:23,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:23,045 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:23,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:23,045 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:23,045 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:23,045 INFO L87 Difference]: Start difference. First operand 529 states and 860 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:23,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:23,090 INFO L93 Difference]: Finished difference Result 1042 states and 1706 transitions. [2024-12-02 10:51:23,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-12-02 10:51:23,091 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 70 [2024-12-02 10:51:23,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:23,095 INFO L225 Difference]: With dead ends: 1042 [2024-12-02 10:51:23,095 INFO L226 Difference]: Without dead ends: 529 [2024-12-02 10:51:23,098 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:23,099 INFO L435 NwaCegarLoop]: 851 mSDtfsCounter, 12 mSDsluCounter, 1684 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2535 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:23,099 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2535 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:23,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 529 states. [2024-12-02 10:51:23,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 529 to 529. [2024-12-02 10:51:23,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 403 states have (on average 1.6327543424317619) internal successors, (658), 421 states have internal predecessors, (658), 102 states have call successors, (102), 25 states have call predecessors, (102), 23 states have return successors, (99), 96 states have call predecessors, (99), 99 states have call successors, (99) [2024-12-02 10:51:23,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 859 transitions. [2024-12-02 10:51:23,120 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 859 transitions. Word has length 70 [2024-12-02 10:51:23,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:23,120 INFO L471 AbstractCegarLoop]: Abstraction has 529 states and 859 transitions. [2024-12-02 10:51:23,121 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2024-12-02 10:51:23,121 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 859 transitions. [2024-12-02 10:51:23,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-12-02 10:51:23,122 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:23,122 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:23,122 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-12-02 10:51:23,122 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:23,122 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:23,122 INFO L85 PathProgramCache]: Analyzing trace with hash -315286105, now seen corresponding path program 1 times [2024-12-02 10:51:23,122 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:23,122 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1263736698] [2024-12-02 10:51:23,122 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:23,123 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:23,309 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:51:23,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:23,309 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1263736698] [2024-12-02 10:51:23,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1263736698] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:23,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [300104326] [2024-12-02 10:51:23,310 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:23,310 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:23,310 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:23,312 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:23,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-12-02 10:51:23,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:23,641 INFO L256 TraceCheckSpWp]: Trace formula consists of 1487 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:51:23,647 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:23,692 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:23,692 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:51:23,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [300104326] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:23,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:51:23,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 10:51:23,692 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1606030954] [2024-12-02 10:51:23,692 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:23,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:51:23,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:23,693 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:51:23,693 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:23,693 INFO L87 Difference]: Start difference. First operand 529 states and 859 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:23,763 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:23,763 INFO L93 Difference]: Finished difference Result 1499 states and 2467 transitions. [2024-12-02 10:51:23,764 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:51:23,764 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 71 [2024-12-02 10:51:23,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:23,772 INFO L225 Difference]: With dead ends: 1499 [2024-12-02 10:51:23,772 INFO L226 Difference]: Without dead ends: 988 [2024-12-02 10:51:23,775 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:23,776 INFO L435 NwaCegarLoop]: 869 mSDtfsCounter, 823 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 823 SdHoareTripleChecker+Valid, 1626 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:23,776 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [823 Valid, 1626 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:23,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 988 states. [2024-12-02 10:51:23,815 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 988 to 973. [2024-12-02 10:51:23,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 973 states, 748 states have (on average 1.6470588235294117) internal successors, (1232), 783 states have internal predecessors, (1232), 180 states have call successors, (180), 45 states have call predecessors, (180), 44 states have return successors, (182), 172 states have call predecessors, (182), 177 states have call successors, (182) [2024-12-02 10:51:23,824 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 973 states to 973 states and 1594 transitions. [2024-12-02 10:51:23,825 INFO L78 Accepts]: Start accepts. Automaton has 973 states and 1594 transitions. Word has length 71 [2024-12-02 10:51:23,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:23,826 INFO L471 AbstractCegarLoop]: Abstraction has 973 states and 1594 transitions. [2024-12-02 10:51:23,826 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:23,826 INFO L276 IsEmpty]: Start isEmpty. Operand 973 states and 1594 transitions. [2024-12-02 10:51:23,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2024-12-02 10:51:23,827 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:23,827 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:23,838 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-12-02 10:51:24,028 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:24,028 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:24,028 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:24,029 INFO L85 PathProgramCache]: Analyzing trace with hash 520758651, now seen corresponding path program 1 times [2024-12-02 10:51:24,029 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:24,029 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944899273] [2024-12-02 10:51:24,029 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:24,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:24,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:24,201 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:51:24,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:24,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944899273] [2024-12-02 10:51:24,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944899273] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:24,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1616795123] [2024-12-02 10:51:24,202 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:24,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:24,202 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:24,203 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:24,206 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-12-02 10:51:24,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:24,525 INFO L256 TraceCheckSpWp]: Trace formula consists of 1488 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-12-02 10:51:24,530 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:24,575 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:24,576 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:51:24,576 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1616795123] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:24,576 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:51:24,576 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-12-02 10:51:24,576 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [167863169] [2024-12-02 10:51:24,576 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:24,576 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:51:24,576 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:24,577 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:51:24,577 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:24,577 INFO L87 Difference]: Start difference. First operand 973 states and 1594 transitions. Second operand has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:24,665 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:24,665 INFO L93 Difference]: Finished difference Result 2387 states and 3939 transitions. [2024-12-02 10:51:24,666 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:51:24,666 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) Word has length 72 [2024-12-02 10:51:24,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:24,674 INFO L225 Difference]: With dead ends: 2387 [2024-12-02 10:51:24,674 INFO L226 Difference]: Without dead ends: 1432 [2024-12-02 10:51:24,678 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 78 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:51:24,678 INFO L435 NwaCegarLoop]: 917 mSDtfsCounter, 826 mSDsluCounter, 753 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 826 SdHoareTripleChecker+Valid, 1670 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:24,679 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [826 Valid, 1670 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:24,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1432 states. [2024-12-02 10:51:24,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1432 to 1384. [2024-12-02 10:51:24,733 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1384 states, 1066 states have (on average 1.6604127579737336) internal successors, (1770), 1118 states have internal predecessors, (1770), 255 states have call successors, (255), 62 states have call predecessors, (255), 62 states have return successors, (262), 245 states have call predecessors, (262), 252 states have call successors, (262) [2024-12-02 10:51:24,740 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1384 states to 1384 states and 2287 transitions. [2024-12-02 10:51:24,742 INFO L78 Accepts]: Start accepts. Automaton has 1384 states and 2287 transitions. Word has length 72 [2024-12-02 10:51:24,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:24,742 INFO L471 AbstractCegarLoop]: Abstraction has 1384 states and 2287 transitions. [2024-12-02 10:51:24,742 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.666666666666668) internal successors, (56), 3 states have internal predecessors, (56), 3 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (7), 3 states have call predecessors, (7), 3 states have call successors, (7) [2024-12-02 10:51:24,742 INFO L276 IsEmpty]: Start isEmpty. Operand 1384 states and 2287 transitions. [2024-12-02 10:51:24,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2024-12-02 10:51:24,743 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:24,744 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:24,751 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-12-02 10:51:24,944 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:24,944 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:24,945 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:24,945 INFO L85 PathProgramCache]: Analyzing trace with hash -779176834, now seen corresponding path program 1 times [2024-12-02 10:51:24,945 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:24,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1612125175] [2024-12-02 10:51:24,945 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:24,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:24,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:25,093 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:25,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:25,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1612125175] [2024-12-02 10:51:25,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1612125175] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:25,094 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:25,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:51:25,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1787074032] [2024-12-02 10:51:25,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:25,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:51:25,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:25,095 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:51:25,095 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:51:25,095 INFO L87 Difference]: Start difference. First operand 1384 states and 2287 transitions. Second operand has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 10:51:25,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:25,646 INFO L93 Difference]: Finished difference Result 4088 states and 6886 transitions. [2024-12-02 10:51:25,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:51:25,646 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) Word has length 74 [2024-12-02 10:51:25,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:25,661 INFO L225 Difference]: With dead ends: 4088 [2024-12-02 10:51:25,661 INFO L226 Difference]: Without dead ends: 2722 [2024-12-02 10:51:25,667 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:51:25,668 INFO L435 NwaCegarLoop]: 996 mSDtfsCounter, 848 mSDsluCounter, 3567 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 859 SdHoareTripleChecker+Valid, 4563 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:25,668 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [859 Valid, 4563 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:51:25,671 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2722 states. [2024-12-02 10:51:25,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2722 to 2675. [2024-12-02 10:51:25,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2675 states, 2065 states have (on average 1.664406779661017) internal successors, (3437), 2165 states have internal predecessors, (3437), 489 states have call successors, (489), 118 states have call predecessors, (489), 120 states have return successors, (577), 475 states have call predecessors, (577), 485 states have call successors, (577) [2024-12-02 10:51:25,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2675 states to 2675 states and 4503 transitions. [2024-12-02 10:51:25,777 INFO L78 Accepts]: Start accepts. Automaton has 2675 states and 4503 transitions. Word has length 74 [2024-12-02 10:51:25,777 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:25,777 INFO L471 AbstractCegarLoop]: Abstraction has 2675 states and 4503 transitions. [2024-12-02 10:51:25,778 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.0) internal successors, (54), 5 states have internal predecessors, (54), 3 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 4 states have call predecessors, (8), 3 states have call successors, (8) [2024-12-02 10:51:25,778 INFO L276 IsEmpty]: Start isEmpty. Operand 2675 states and 4503 transitions. [2024-12-02 10:51:25,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 10:51:25,779 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:25,780 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:25,780 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-12-02 10:51:25,780 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:25,780 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:25,780 INFO L85 PathProgramCache]: Analyzing trace with hash -137942504, now seen corresponding path program 1 times [2024-12-02 10:51:25,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:25,780 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [351532893] [2024-12-02 10:51:25,780 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:25,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:25,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:25,929 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-12-02 10:51:25,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [351532893] [2024-12-02 10:51:25,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [351532893] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:25,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1841190593] [2024-12-02 10:51:25,930 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:25,930 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:25,930 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:25,931 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:25,933 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-12-02 10:51:26,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:26,238 INFO L256 TraceCheckSpWp]: Trace formula consists of 1506 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:51:26,243 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-12-02 10:51:26,352 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:51:26,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1841190593] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:26,352 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:51:26,352 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2024-12-02 10:51:26,352 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1861559959] [2024-12-02 10:51:26,352 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:26,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:51:26,353 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:26,353 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:51:26,353 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:51:26,353 INFO L87 Difference]: Start difference. First operand 2675 states and 4503 transitions. Second operand has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 10:51:26,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:26,734 INFO L93 Difference]: Finished difference Result 7216 states and 12348 transitions. [2024-12-02 10:51:26,735 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-12-02 10:51:26,735 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) Word has length 75 [2024-12-02 10:51:26,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:26,763 INFO L225 Difference]: With dead ends: 7216 [2024-12-02 10:51:26,763 INFO L226 Difference]: Without dead ends: 4559 [2024-12-02 10:51:26,774 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2024-12-02 10:51:26,775 INFO L435 NwaCegarLoop]: 838 mSDtfsCounter, 725 mSDsluCounter, 2409 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 726 SdHoareTripleChecker+Valid, 3247 SdHoareTripleChecker+Invalid, 313 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:26,775 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [726 Valid, 3247 Invalid, 313 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-12-02 10:51:26,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4559 states. [2024-12-02 10:51:26,905 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4559 to 4516. [2024-12-02 10:51:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4516 states, 3484 states have (on average 1.6165327210103329) internal successors, (5632), 3650 states have internal predecessors, (5632), 814 states have call successors, (814), 210 states have call predecessors, (814), 217 states have return successors, (1070), 795 states have call predecessors, (1070), 808 states have call successors, (1070) [2024-12-02 10:51:26,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4516 states to 4516 states and 7516 transitions. [2024-12-02 10:51:26,934 INFO L78 Accepts]: Start accepts. Automaton has 4516 states and 7516 transitions. Word has length 75 [2024-12-02 10:51:26,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:26,934 INFO L471 AbstractCegarLoop]: Abstraction has 4516 states and 7516 transitions. [2024-12-02 10:51:26,934 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 4 states have call successors, (10), 3 states have call predecessors, (10), 3 states have return successors, (8), 3 states have call predecessors, (8), 4 states have call successors, (8) [2024-12-02 10:51:26,935 INFO L276 IsEmpty]: Start isEmpty. Operand 4516 states and 7516 transitions. [2024-12-02 10:51:26,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2024-12-02 10:51:26,935 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:26,935 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:26,943 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-12-02 10:51:27,136 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-12-02 10:51:27,136 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:27,136 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:27,136 INFO L85 PathProgramCache]: Analyzing trace with hash -1877714317, now seen corresponding path program 1 times [2024-12-02 10:51:27,137 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:27,137 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220262659] [2024-12-02 10:51:27,137 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:27,137 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:27,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:27,243 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-12-02 10:51:27,243 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:27,243 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220262659] [2024-12-02 10:51:27,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220262659] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:27,243 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:27,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:27,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246120378] [2024-12-02 10:51:27,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:27,244 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:27,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:27,244 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:27,244 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:27,244 INFO L87 Difference]: Start difference. First operand 4516 states and 7516 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:51:27,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:27,464 INFO L93 Difference]: Finished difference Result 9038 states and 15197 transitions. [2024-12-02 10:51:27,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:51:27,465 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 75 [2024-12-02 10:51:27,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:27,501 INFO L225 Difference]: With dead ends: 9038 [2024-12-02 10:51:27,502 INFO L226 Difference]: Without dead ends: 4540 [2024-12-02 10:51:27,523 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:51:27,524 INFO L435 NwaCegarLoop]: 842 mSDtfsCounter, 12 mSDsluCounter, 1659 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2501 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:27,524 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2501 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:27,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4540 states. [2024-12-02 10:51:27,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4540 to 4524. [2024-12-02 10:51:27,719 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4524 states, 3490 states have (on average 1.6148997134670486) internal successors, (5636), 3656 states have internal predecessors, (5636), 814 states have call successors, (814), 214 states have call predecessors, (814), 219 states have return successors, (1057), 793 states have call predecessors, (1057), 808 states have call successors, (1057) [2024-12-02 10:51:27,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4524 states to 4524 states and 7507 transitions. [2024-12-02 10:51:27,756 INFO L78 Accepts]: Start accepts. Automaton has 4524 states and 7507 transitions. Word has length 75 [2024-12-02 10:51:27,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:27,756 INFO L471 AbstractCegarLoop]: Abstraction has 4524 states and 7507 transitions. [2024-12-02 10:51:27,756 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2024-12-02 10:51:27,756 INFO L276 IsEmpty]: Start isEmpty. Operand 4524 states and 7507 transitions. [2024-12-02 10:51:27,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2024-12-02 10:51:27,758 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:27,758 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:27,758 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-12-02 10:51:27,758 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:27,759 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:27,759 INFO L85 PathProgramCache]: Analyzing trace with hash 646283321, now seen corresponding path program 1 times [2024-12-02 10:51:27,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:27,759 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1021650159] [2024-12-02 10:51:27,759 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:27,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:27,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:27,944 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-12-02 10:51:27,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:27,944 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1021650159] [2024-12-02 10:51:27,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1021650159] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:27,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:27,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:51:27,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [185394112] [2024-12-02 10:51:27,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:27,945 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:51:27,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:27,946 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:51:27,946 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:51:27,946 INFO L87 Difference]: Start difference. First operand 4524 states and 7507 transitions. Second operand has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 10:51:28,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:28,696 INFO L93 Difference]: Finished difference Result 13523 states and 23249 transitions. [2024-12-02 10:51:28,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:51:28,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) Word has length 83 [2024-12-02 10:51:28,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:28,786 INFO L225 Difference]: With dead ends: 13523 [2024-12-02 10:51:28,786 INFO L226 Difference]: Without dead ends: 9017 [2024-12-02 10:51:28,815 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:51:28,816 INFO L435 NwaCegarLoop]: 928 mSDtfsCounter, 846 mSDsluCounter, 3372 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 854 SdHoareTripleChecker+Valid, 4300 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:28,816 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [854 Valid, 4300 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:51:28,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9017 states. [2024-12-02 10:51:29,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9017 to 8948. [2024-12-02 10:51:29,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8948 states, 6910 states have (on average 1.612590448625181) internal successors, (11143), 7236 states have internal predecessors, (11143), 1600 states have call successors, (1600), 422 states have call predecessors, (1600), 437 states have return successors, (2521), 1569 states have call predecessors, (2521), 1590 states have call successors, (2521) [2024-12-02 10:51:29,432 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8948 states to 8948 states and 15264 transitions. [2024-12-02 10:51:29,438 INFO L78 Accepts]: Start accepts. Automaton has 8948 states and 15264 transitions. Word has length 83 [2024-12-02 10:51:29,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:29,438 INFO L471 AbstractCegarLoop]: Abstraction has 8948 states and 15264 transitions. [2024-12-02 10:51:29,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.0) internal successors, (60), 5 states have internal predecessors, (60), 3 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (9), 4 states have call predecessors, (9), 3 states have call successors, (9) [2024-12-02 10:51:29,439 INFO L276 IsEmpty]: Start isEmpty. Operand 8948 states and 15264 transitions. [2024-12-02 10:51:29,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2024-12-02 10:51:29,441 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:29,441 INFO L218 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:29,441 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-12-02 10:51:29,441 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:29,442 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:29,442 INFO L85 PathProgramCache]: Analyzing trace with hash -1450823584, now seen corresponding path program 1 times [2024-12-02 10:51:29,442 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:29,442 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233826711] [2024-12-02 10:51:29,442 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:29,442 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:29,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:29,534 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-12-02 10:51:29,534 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:29,534 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233826711] [2024-12-02 10:51:29,534 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233826711] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:29,534 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:29,534 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:29,534 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [659112987] [2024-12-02 10:51:29,534 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:29,535 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:29,535 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:29,535 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:29,535 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:29,535 INFO L87 Difference]: Start difference. First operand 8948 states and 15264 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 10:51:29,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:29,957 INFO L93 Difference]: Finished difference Result 17950 states and 31081 transitions. [2024-12-02 10:51:29,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:51:29,957 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 84 [2024-12-02 10:51:29,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:30,019 INFO L225 Difference]: With dead ends: 17950 [2024-12-02 10:51:30,019 INFO L226 Difference]: Without dead ends: 9020 [2024-12-02 10:51:30,058 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:51:30,059 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 12 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:30,059 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 2495 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:51:30,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9020 states. [2024-12-02 10:51:30,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9020 to 8988. [2024-12-02 10:51:30,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8988 states, 6946 states have (on average 1.6099913619349266) internal successors, (11183), 7264 states have internal predecessors, (11183), 1600 states have call successors, (1600), 438 states have call predecessors, (1600), 441 states have return successors, (2501), 1565 states have call predecessors, (2501), 1590 states have call successors, (2501) [2024-12-02 10:51:30,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8988 states to 8988 states and 15284 transitions. [2024-12-02 10:51:30,436 INFO L78 Accepts]: Start accepts. Automaton has 8988 states and 15284 transitions. Word has length 84 [2024-12-02 10:51:30,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:30,437 INFO L471 AbstractCegarLoop]: Abstraction has 8988 states and 15284 transitions. [2024-12-02 10:51:30,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2024-12-02 10:51:30,437 INFO L276 IsEmpty]: Start isEmpty. Operand 8988 states and 15284 transitions. [2024-12-02 10:51:30,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2024-12-02 10:51:30,439 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:30,439 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:30,439 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-12-02 10:51:30,439 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:30,439 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:30,439 INFO L85 PathProgramCache]: Analyzing trace with hash 496008913, now seen corresponding path program 1 times [2024-12-02 10:51:30,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:30,440 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897303405] [2024-12-02 10:51:30,440 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:30,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:30,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:30,622 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-12-02 10:51:30,622 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:30,622 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897303405] [2024-12-02 10:51:30,622 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897303405] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:30,622 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:30,622 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:51:30,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592001845] [2024-12-02 10:51:30,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:30,622 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:51:30,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:30,623 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:51:30,623 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:51:30,623 INFO L87 Difference]: Start difference. First operand 8988 states and 15284 transitions. Second operand has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 10:51:31,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:31,571 INFO L93 Difference]: Finished difference Result 26987 states and 48345 transitions. [2024-12-02 10:51:31,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:51:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) Word has length 93 [2024-12-02 10:51:31,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:31,663 INFO L225 Difference]: With dead ends: 26987 [2024-12-02 10:51:31,663 INFO L226 Difference]: Without dead ends: 18017 [2024-12-02 10:51:31,700 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:51:31,701 INFO L435 NwaCegarLoop]: 927 mSDtfsCounter, 842 mSDsluCounter, 3378 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 848 SdHoareTripleChecker+Valid, 4305 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:31,701 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [848 Valid, 4305 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:51:31,713 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18017 states. [2024-12-02 10:51:32,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18017 to 17916. [2024-12-02 10:51:32,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17916 states, 13852 states have (on average 1.6070603522956974) internal successors, (22261), 14482 states have internal predecessors, (22261), 3178 states have call successors, (3178), 870 states have call predecessors, (3178), 885 states have return successors, (6322), 3123 states have call predecessors, (6322), 3160 states have call successors, (6322) [2024-12-02 10:51:32,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17916 states to 17916 states and 31761 transitions. [2024-12-02 10:51:32,502 INFO L78 Accepts]: Start accepts. Automaton has 17916 states and 31761 transitions. Word has length 93 [2024-12-02 10:51:32,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:32,503 INFO L471 AbstractCegarLoop]: Abstraction has 17916 states and 31761 transitions. [2024-12-02 10:51:32,503 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.833333333333334) internal successors, (65), 5 states have internal predecessors, (65), 3 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (10), 4 states have call predecessors, (10), 3 states have call successors, (10) [2024-12-02 10:51:32,503 INFO L276 IsEmpty]: Start isEmpty. Operand 17916 states and 31761 transitions. [2024-12-02 10:51:32,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2024-12-02 10:51:32,505 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:32,505 INFO L218 NwaCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:32,506 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-12-02 10:51:32,506 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:32,506 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:32,506 INFO L85 PathProgramCache]: Analyzing trace with hash 1667903248, now seen corresponding path program 1 times [2024-12-02 10:51:32,506 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:32,506 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [596513093] [2024-12-02 10:51:32,506 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:32,507 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:32,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:32,590 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-12-02 10:51:32,590 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:32,590 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [596513093] [2024-12-02 10:51:32,590 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [596513093] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:32,591 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:32,591 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:32,591 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2019404359] [2024-12-02 10:51:32,591 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:32,591 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:32,591 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:32,592 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:32,592 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:32,592 INFO L87 Difference]: Start difference. First operand 17916 states and 31761 transitions. Second operand has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 10:51:33,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:33,337 INFO L93 Difference]: Finished difference Result 35958 states and 65266 transitions. [2024-12-02 10:51:33,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:51:33,338 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 94 [2024-12-02 10:51:33,338 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:33,446 INFO L225 Difference]: With dead ends: 35958 [2024-12-02 10:51:33,446 INFO L226 Difference]: Without dead ends: 18060 [2024-12-02 10:51:33,528 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:51:33,529 INFO L435 NwaCegarLoop]: 840 mSDtfsCounter, 11 mSDsluCounter, 1658 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 2498 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:33,529 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 2498 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:51:33,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18060 states. [2024-12-02 10:51:34,260 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18060 to 17996. [2024-12-02 10:51:34,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17996 states, 13924 states have (on average 1.6044958345303073) internal successors, (22341), 14554 states have internal predecessors, (22341), 3178 states have call successors, (3178), 886 states have call predecessors, (3178), 893 states have return successors, (6294), 3115 states have call predecessors, (6294), 3160 states have call successors, (6294) [2024-12-02 10:51:34,428 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17996 states to 17996 states and 31813 transitions. [2024-12-02 10:51:34,439 INFO L78 Accepts]: Start accepts. Automaton has 17996 states and 31813 transitions. Word has length 94 [2024-12-02 10:51:34,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:34,440 INFO L471 AbstractCegarLoop]: Abstraction has 17996 states and 31813 transitions. [2024-12-02 10:51:34,440 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 17.0) internal successors, (68), 4 states have internal predecessors, (68), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-12-02 10:51:34,440 INFO L276 IsEmpty]: Start isEmpty. Operand 17996 states and 31813 transitions. [2024-12-02 10:51:34,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2024-12-02 10:51:34,442 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:34,442 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:34,443 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-12-02 10:51:34,443 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:34,443 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:34,443 INFO L85 PathProgramCache]: Analyzing trace with hash 1772331782, now seen corresponding path program 1 times [2024-12-02 10:51:34,443 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:34,443 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [845865450] [2024-12-02 10:51:34,443 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:34,443 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:34,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:34,601 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-12-02 10:51:34,601 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:34,601 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [845865450] [2024-12-02 10:51:34,601 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [845865450] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:34,601 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:34,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-12-02 10:51:34,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1268889133] [2024-12-02 10:51:34,602 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:34,602 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:51:34,602 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:34,602 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:51:34,603 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-12-02 10:51:34,603 INFO L87 Difference]: Start difference. First operand 17996 states and 31813 transitions. Second operand has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 10:51:36,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:36,225 INFO L93 Difference]: Finished difference Result 54131 states and 103424 transitions. [2024-12-02 10:51:36,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:51:36,225 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 104 [2024-12-02 10:51:36,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:36,569 INFO L225 Difference]: With dead ends: 54131 [2024-12-02 10:51:36,570 INFO L226 Difference]: Without dead ends: 36153 [2024-12-02 10:51:36,742 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:51:36,742 INFO L435 NwaCegarLoop]: 918 mSDtfsCounter, 836 mSDsluCounter, 3359 mSDsCounter, 0 mSdLazyCounter, 256 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 840 SdHoareTripleChecker+Valid, 4277 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 256 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:36,743 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [840 Valid, 4277 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 256 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-12-02 10:51:36,770 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36153 states. [2024-12-02 10:51:38,119 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36153 to 35988. [2024-12-02 10:51:38,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35988 states, 27850 states have (on average 1.6021184919210054) internal successors, (44619), 29104 states have internal predecessors, (44619), 6340 states have call successors, (6340), 1766 states have call predecessors, (6340), 1797 states have return successors, (16763), 6237 states have call predecessors, (16763), 6306 states have call successors, (16763) [2024-12-02 10:51:38,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35988 states to 35988 states and 67722 transitions. [2024-12-02 10:51:38,404 INFO L78 Accepts]: Start accepts. Automaton has 35988 states and 67722 transitions. Word has length 104 [2024-12-02 10:51:38,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:38,404 INFO L471 AbstractCegarLoop]: Abstraction has 35988 states and 67722 transitions. [2024-12-02 10:51:38,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 11.666666666666666) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2024-12-02 10:51:38,404 INFO L276 IsEmpty]: Start isEmpty. Operand 35988 states and 67722 transitions. [2024-12-02 10:51:38,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2024-12-02 10:51:38,406 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:38,406 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:38,406 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-12-02 10:51:38,407 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:38,407 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:38,407 INFO L85 PathProgramCache]: Analyzing trace with hash -1829690758, now seen corresponding path program 1 times [2024-12-02 10:51:38,407 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:38,407 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1113836644] [2024-12-02 10:51:38,407 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:38,407 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:38,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:38,607 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 11 proven. 4 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2024-12-02 10:51:38,608 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:38,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1113836644] [2024-12-02 10:51:38,608 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1113836644] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:51:38,608 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [790543431] [2024-12-02 10:51:38,608 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:38,608 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:38,608 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:51:38,610 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:51:38,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-12-02 10:51:38,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:38,937 INFO L256 TraceCheckSpWp]: Trace formula consists of 1837 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-12-02 10:51:38,941 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:51:39,116 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-12-02 10:51:39,116 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:51:39,116 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [790543431] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:39,116 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:51:39,116 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [8] total 14 [2024-12-02 10:51:39,116 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898714186] [2024-12-02 10:51:39,117 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:39,117 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-12-02 10:51:39,117 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:39,118 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-12-02 10:51:39,118 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=151, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:51:39,118 INFO L87 Difference]: Start difference. First operand 35988 states and 67722 transitions. Second operand has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 10:51:46,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:46,133 INFO L93 Difference]: Finished difference Result 128737 states and 263522 transitions. [2024-12-02 10:51:46,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-12-02 10:51:46,134 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) Word has length 129 [2024-12-02 10:51:46,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:46,894 INFO L225 Difference]: With dead ends: 128737 [2024-12-02 10:51:46,894 INFO L226 Difference]: Without dead ends: 92767 [2024-12-02 10:51:47,243 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 125 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2024-12-02 10:51:47,243 INFO L435 NwaCegarLoop]: 625 mSDtfsCounter, 2402 mSDsluCounter, 1928 mSDsCounter, 0 mSdLazyCounter, 6356 mSolverCounterSat, 488 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2569 SdHoareTripleChecker+Valid, 2553 SdHoareTripleChecker+Invalid, 6844 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 488 IncrementalHoareTripleChecker+Valid, 6356 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:47,244 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2569 Valid, 2553 Invalid, 6844 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [488 Valid, 6356 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2024-12-02 10:51:47,295 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92767 states. [2024-12-02 10:51:50,363 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92767 to 91494. [2024-12-02 10:51:50,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91494 states, 70872 states have (on average 1.5944660796929675) internal successors, (113003), 73910 states have internal predecessors, (113003), 15880 states have call successors, (15880), 4406 states have call predecessors, (15880), 4741 states have return successors, (52120), 15913 states have call predecessors, (52120), 15814 states have call successors, (52120) [2024-12-02 10:51:51,195 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91494 states to 91494 states and 181003 transitions. [2024-12-02 10:51:51,228 INFO L78 Accepts]: Start accepts. Automaton has 91494 states and 181003 transitions. Word has length 129 [2024-12-02 10:51:51,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:51:51,229 INFO L471 AbstractCegarLoop]: Abstraction has 91494 states and 181003 transitions. [2024-12-02 10:51:51,229 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.25) internal successors, (90), 7 states have internal predecessors, (90), 4 states have call successors, (15), 4 states have call predecessors, (15), 4 states have return successors, (13), 3 states have call predecessors, (13), 4 states have call successors, (13) [2024-12-02 10:51:51,229 INFO L276 IsEmpty]: Start isEmpty. Operand 91494 states and 181003 transitions. [2024-12-02 10:51:51,230 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2024-12-02 10:51:51,230 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:51:51,230 INFO L218 NwaCegarLoop]: trace histogram [4, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:51:51,243 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-12-02 10:51:51,431 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:51:51,431 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:51:51,431 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:51:51,431 INFO L85 PathProgramCache]: Analyzing trace with hash 1766505411, now seen corresponding path program 1 times [2024-12-02 10:51:51,431 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:51:51,431 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [712552957] [2024-12-02 10:51:51,431 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:51:51,431 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:51:51,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:51:51,512 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-12-02 10:51:51,512 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:51:51,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [712552957] [2024-12-02 10:51:51,513 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [712552957] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:51:51,513 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:51:51,513 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-12-02 10:51:51,513 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135640201] [2024-12-02 10:51:51,513 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:51:51,513 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-12-02 10:51:51,513 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:51:51,514 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-12-02 10:51:51,514 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-12-02 10:51:51,514 INFO L87 Difference]: Start difference. First operand 91494 states and 181003 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:51:56,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:51:56,722 INFO L93 Difference]: Finished difference Result 183866 states and 381329 transitions. [2024-12-02 10:51:56,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:51:56,723 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 105 [2024-12-02 10:51:56,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:51:57,289 INFO L225 Difference]: With dead ends: 183866 [2024-12-02 10:51:57,289 INFO L226 Difference]: Without dead ends: 92390 [2024-12-02 10:51:57,880 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:51:57,881 INFO L435 NwaCegarLoop]: 839 mSDtfsCounter, 10 mSDsluCounter, 1656 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 2495 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-12-02 10:51:57,882 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 2495 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-12-02 10:51:57,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92390 states. [2024-12-02 10:52:01,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92390 to 92070. [2024-12-02 10:52:01,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92070 states, 71400 states have (on average 1.5907422969187675) internal successors, (113579), 74438 states have internal predecessors, (113579), 15880 states have call successors, (15880), 4502 states have call predecessors, (15880), 4789 states have return successors, (52056), 15865 states have call predecessors, (52056), 15814 states have call successors, (52056) [2024-12-02 10:52:02,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92070 states to 92070 states and 181515 transitions. [2024-12-02 10:52:02,593 INFO L78 Accepts]: Start accepts. Automaton has 92070 states and 181515 transitions. Word has length 105 [2024-12-02 10:52:02,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:52:02,593 INFO L471 AbstractCegarLoop]: Abstraction has 92070 states and 181515 transitions. [2024-12-02 10:52:02,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2024-12-02 10:52:02,594 INFO L276 IsEmpty]: Start isEmpty. Operand 92070 states and 181515 transitions. [2024-12-02 10:52:02,594 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2024-12-02 10:52:02,594 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:52:02,594 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:52:02,594 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-12-02 10:52:02,595 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:52:02,595 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:52:02,595 INFO L85 PathProgramCache]: Analyzing trace with hash 41487342, now seen corresponding path program 1 times [2024-12-02 10:52:02,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:52:02,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1551424940] [2024-12-02 10:52:02,595 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:02,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:52:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:02,764 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2024-12-02 10:52:02,764 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:52:02,764 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1551424940] [2024-12-02 10:52:02,764 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1551424940] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:52:02,764 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:52:02,764 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-12-02 10:52:02,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693684262] [2024-12-02 10:52:02,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:52:02,765 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-12-02 10:52:02,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:52:02,765 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-12-02 10:52:02,765 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-12-02 10:52:02,765 INFO L87 Difference]: Start difference. First operand 92070 states and 181515 transitions. Second operand has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:52:07,738 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:52:07,739 INFO L93 Difference]: Finished difference Result 186678 states and 371418 transitions. [2024-12-02 10:52:07,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-12-02 10:52:07,739 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) Word has length 116 [2024-12-02 10:52:07,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:52:08,555 INFO L225 Difference]: With dead ends: 186678 [2024-12-02 10:52:08,555 INFO L226 Difference]: Without dead ends: 94578 [2024-12-02 10:52:09,018 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:52:09,018 INFO L435 NwaCegarLoop]: 901 mSDtfsCounter, 696 mSDsluCounter, 2571 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 696 SdHoareTripleChecker+Valid, 3472 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-12-02 10:52:09,018 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [696 Valid, 3472 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-12-02 10:52:09,068 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94578 states. [2024-12-02 10:52:12,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94578 to 94415. [2024-12-02 10:52:12,417 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94415 states, 73277 states have (on average 1.583552820120911) internal successors, (116038), 76380 states have internal predecessors, (116038), 16197 states have call successors, (16197), 4668 states have call predecessors, (16197), 4940 states have return successors, (52540), 16089 states have call predecessors, (52540), 16131 states have call successors, (52540) [2024-12-02 10:52:13,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94415 states to 94415 states and 184775 transitions. [2024-12-02 10:52:13,278 INFO L78 Accepts]: Start accepts. Automaton has 94415 states and 184775 transitions. Word has length 116 [2024-12-02 10:52:13,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:52:13,278 INFO L471 AbstractCegarLoop]: Abstraction has 94415 states and 184775 transitions. [2024-12-02 10:52:13,278 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.8) internal successors, (74), 5 states have internal predecessors, (74), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (12), 4 states have call predecessors, (12), 4 states have call successors, (12) [2024-12-02 10:52:13,278 INFO L276 IsEmpty]: Start isEmpty. Operand 94415 states and 184775 transitions. [2024-12-02 10:52:13,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2024-12-02 10:52:13,282 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:52:13,282 INFO L218 NwaCegarLoop]: trace histogram [9, 9, 6, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:52:13,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-12-02 10:52:13,282 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:52:13,282 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:52:13,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1363431426, now seen corresponding path program 1 times [2024-12-02 10:52:13,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:52:13,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [749848299] [2024-12-02 10:52:13,283 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:13,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:52:13,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:13,605 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 23 proven. 31 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2024-12-02 10:52:13,605 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:52:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [749848299] [2024-12-02 10:52:13,606 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [749848299] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:52:13,606 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [618063264] [2024-12-02 10:52:13,606 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:13,606 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:52:13,606 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:52:13,609 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:52:13,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-12-02 10:52:13,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:14,004 INFO L256 TraceCheckSpWp]: Trace formula consists of 2509 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-12-02 10:52:14,009 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:52:14,530 INFO L134 CoverageAnalysis]: Checked inductivity of 238 backedges. 146 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2024-12-02 10:52:14,530 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:52:14,531 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [618063264] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:52:14,531 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:52:14,531 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 9 [2024-12-02 10:52:14,531 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1595922311] [2024-12-02 10:52:14,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:52:14,531 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-12-02 10:52:14,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:52:14,532 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-12-02 10:52:14,532 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2024-12-02 10:52:14,532 INFO L87 Difference]: Start difference. First operand 94415 states and 184775 transitions. Second operand has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 10:52:27,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:52:27,618 INFO L93 Difference]: Finished difference Result 310928 states and 610943 transitions. [2024-12-02 10:52:27,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-12-02 10:52:27,619 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) Word has length 224 [2024-12-02 10:52:27,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:52:29,312 INFO L225 Difference]: With dead ends: 310928 [2024-12-02 10:52:29,312 INFO L226 Difference]: Without dead ends: 216594 [2024-12-02 10:52:30,090 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 231 GetRequests, 223 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2024-12-02 10:52:30,090 INFO L435 NwaCegarLoop]: 751 mSDtfsCounter, 2597 mSDsluCounter, 872 mSDsCounter, 0 mSdLazyCounter, 3030 mSolverCounterSat, 496 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2787 SdHoareTripleChecker+Valid, 1623 SdHoareTripleChecker+Invalid, 3526 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 496 IncrementalHoareTripleChecker+Valid, 3030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2024-12-02 10:52:30,091 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [2787 Valid, 1623 Invalid, 3526 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [496 Valid, 3030 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2024-12-02 10:52:30,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 216594 states. [2024-12-02 10:52:38,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 216594 to 196139. [2024-12-02 10:52:38,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 196139 states, 154049 states have (on average 1.5740056735194645) internal successors, (242474), 158508 states have internal predecessors, (242474), 32470 states have call successors, (32470), 8577 states have call predecessors, (32470), 9619 states have return successors, (105908), 31603 states have call predecessors, (105908), 32400 states have call successors, (105908) [2024-12-02 10:52:40,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196139 states to 196139 states and 380852 transitions. [2024-12-02 10:52:40,948 INFO L78 Accepts]: Start accepts. Automaton has 196139 states and 380852 transitions. Word has length 224 [2024-12-02 10:52:40,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:52:40,949 INFO L471 AbstractCegarLoop]: Abstraction has 196139 states and 380852 transitions. [2024-12-02 10:52:40,949 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 23.333333333333332) internal successors, (140), 5 states have internal predecessors, (140), 3 states have call successors, (26), 4 states have call predecessors, (26), 4 states have return successors, (24), 3 states have call predecessors, (24), 3 states have call successors, (24) [2024-12-02 10:52:40,949 INFO L276 IsEmpty]: Start isEmpty. Operand 196139 states and 380852 transitions. [2024-12-02 10:52:40,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 10:52:40,966 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:52:40,966 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:52:40,975 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-12-02 10:52:41,166 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23,6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:52:41,167 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:52:41,167 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:52:41,167 INFO L85 PathProgramCache]: Analyzing trace with hash -1008306911, now seen corresponding path program 1 times [2024-12-02 10:52:41,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:52:41,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1751773291] [2024-12-02 10:52:41,168 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:41,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:52:41,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:42,015 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 16 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2024-12-02 10:52:42,016 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:52:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1751773291] [2024-12-02 10:52:42,016 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1751773291] provided 0 perfect and 1 imperfect interpolant sequences [2024-12-02 10:52:42,016 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452904053] [2024-12-02 10:52:42,016 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:52:42,016 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-12-02 10:52:42,016 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 [2024-12-02 10:52:42,018 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-12-02 10:52:42,019 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-12-02 10:52:42,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:52:42,406 INFO L256 TraceCheckSpWp]: Trace formula consists of 2451 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-12-02 10:52:42,411 INFO L279 TraceCheckSpWp]: Computing forward predicates... [2024-12-02 10:52:42,433 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2024-12-02 10:52:42,434 INFO L308 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-12-02 10:52:42,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452904053] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:52:42,434 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-12-02 10:52:42,434 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [13] total 14 [2024-12-02 10:52:42,434 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1549663219] [2024-12-02 10:52:42,434 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:52:42,435 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-12-02 10:52:42,435 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:52:42,435 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-12-02 10:52:42,436 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:52:42,436 INFO L87 Difference]: Start difference. First operand 196139 states and 380852 transitions. Second operand has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 10:52:55,936 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-12-02 10:52:55,936 INFO L93 Difference]: Finished difference Result 453953 states and 903974 transitions. [2024-12-02 10:52:55,937 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-12-02 10:52:55,937 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) Word has length 195 [2024-12-02 10:52:55,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-12-02 10:52:58,140 INFO L225 Difference]: With dead ends: 453953 [2024-12-02 10:52:58,140 INFO L226 Difference]: Without dead ends: 283589 [2024-12-02 10:52:59,583 INFO L434 NwaCegarLoop]: 0 DeclaredPredicates, 210 GetRequests, 198 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2024-12-02 10:52:59,584 INFO L435 NwaCegarLoop]: 1613 mSDtfsCounter, 843 mSDsluCounter, 839 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 843 SdHoareTripleChecker+Valid, 2452 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-12-02 10:52:59,584 INFO L436 NwaCegarLoop]: SdHoareTripleChecker [843 Valid, 2452 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-12-02 10:52:59,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 283589 states. [2024-12-02 10:53:10,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 283589 to 282067. [2024-12-02 10:53:11,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282067 states, 222523 states have (on average 1.5788345474400398) internal successors, (351327), 228462 states have internal predecessors, (351327), 45883 states have call successors, (45883), 12145 states have call predecessors, (45883), 13660 states have return successors, (158016), 44969 states have call predecessors, (158016), 45796 states have call successors, (158016) [2024-12-02 10:53:14,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282067 states to 282067 states and 555226 transitions. [2024-12-02 10:53:14,745 INFO L78 Accepts]: Start accepts. Automaton has 282067 states and 555226 transitions. Word has length 195 [2024-12-02 10:53:14,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-12-02 10:53:14,745 INFO L471 AbstractCegarLoop]: Abstraction has 282067 states and 555226 transitions. [2024-12-02 10:53:14,745 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 37.666666666666664) internal successors, (113), 3 states have internal predecessors, (113), 2 states have call successors, (21), 2 states have call predecessors, (21), 2 states have return successors, (20), 2 states have call predecessors, (20), 2 states have call successors, (20) [2024-12-02 10:53:14,745 INFO L276 IsEmpty]: Start isEmpty. Operand 282067 states and 555226 transitions. [2024-12-02 10:53:14,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2024-12-02 10:53:14,756 INFO L210 NwaCegarLoop]: Found error trace [2024-12-02 10:53:14,756 INFO L218 NwaCegarLoop]: trace histogram [5, 5, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-12-02 10:53:14,765 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-12-02 10:53:14,957 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_8663e36d-f4a2-4143-9051-32ff263c2399/bin/uautomizer-verify-84ZbGMXZE1/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable24 [2024-12-02 10:53:14,957 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-12-02 10:53:14,957 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-12-02 10:53:14,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1759519739, now seen corresponding path program 1 times [2024-12-02 10:53:14,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-12-02 10:53:14,957 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1118698655] [2024-12-02 10:53:14,957 INFO L97 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-12-02 10:53:14,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-12-02 10:53:14,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-12-02 10:53:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 91 backedges. 11 proven. 0 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2024-12-02 10:53:15,121 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-12-02 10:53:15,121 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1118698655] [2024-12-02 10:53:15,121 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1118698655] provided 1 perfect and 0 imperfect interpolant sequences [2024-12-02 10:53:15,121 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-12-02 10:53:15,121 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-12-02 10:53:15,121 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1881499719] [2024-12-02 10:53:15,121 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-12-02 10:53:15,121 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-12-02 10:53:15,122 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-12-02 10:53:15,122 INFO L144 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-12-02 10:53:15,122 INFO L146 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-12-02 10:53:15,122 INFO L87 Difference]: Start difference. First operand 282067 states and 555226 transitions. Second operand has 7 states, 7 states have (on average 16.285714285714285) internal successors, (114), 7 states have internal predecessors, (114), 5 states have call successors, (22), 3 states have call predecessors, (22), 2 states have return successors, (20), 5 states have call predecessors, (20), 5 states have call successors, (20)