./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme --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 f6cc861ca86011eb32ffd09a18c7045c0cb28e684d3b73d1659bc499a4213e84 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:08,428 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:08,555 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:08,566 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:08,567 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:08,609 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:08,610 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:08,610 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:08,612 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:08,618 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:08,618 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:08,619 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:08,620 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:08,621 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:08,622 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:08,622 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:08,623 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:08,623 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:08,624 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:08,624 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:08,625 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:08,625 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:08,626 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:08,626 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:08,627 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:08,627 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:08,627 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:08,628 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:08,629 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:08,629 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:08,630 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:08,631 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:08,631 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:08,631 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:08,632 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:08,632 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:08,632 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:08,632 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:08,633 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:08,633 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:08,633 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:08,633 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:08,634 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f6cc861ca86011eb32ffd09a18c7045c0cb28e684d3b73d1659bc499a4213e84 [2023-11-26 11:55:08,945 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:08,968 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:08,971 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:08,973 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:08,973 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:08,975 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2023-11-26 11:55:12,393 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:12,849 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:12,850 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c [2023-11-26 11:55:12,896 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/data/f8548995f/0002891473a14065b6f2694a03ed6e96/FLAG020e52706 [2023-11-26 11:55:12,921 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/data/f8548995f/0002891473a14065b6f2694a03ed6e96 [2023-11-26 11:55:12,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:12,931 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:12,935 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:12,935 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:12,941 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:12,942 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:12" (1/1) ... [2023-11-26 11:55:12,944 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@416e04f8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:12, skipping insertion in model container [2023-11-26 11:55:12,944 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:12" (1/1) ... [2023-11-26 11:55:13,073 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:13,810 WARN L240 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_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c[69987,70000] [2023-11-26 11:55:13,824 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:13,844 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:13,853 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-26 11:55:13,855 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [414] [2023-11-26 11:55:13,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification14_spec.i","") [517] [2023-11-26 11:55:13,856 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [558] [2023-11-26 11:55:13,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [911] [2023-11-26 11:55:13,857 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [946] [2023-11-26 11:55:13,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [960] [2023-11-26 11:55:13,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1627] [2023-11-26 11:55:13,858 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3197] [2023-11-26 11:55:13,859 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3315] [2023-11-26 11:55:14,066 WARN L240 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_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/sv-benchmarks/c/product-lines/elevator_spec14_product20.cil.c[69987,70000] [2023-11-26 11:55:14,067 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:14,130 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:14,131 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14 WrapperNode [2023-11-26 11:55:14,131 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:14,132 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:14,132 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:14,133 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:14,138 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,172 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,235 INFO L138 Inliner]: procedures = 93, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 1059 [2023-11-26 11:55:14,235 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:14,236 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:14,236 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:14,237 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:14,248 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,248 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,255 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,284 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]. [2023-11-26 11:55:14,284 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,284 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,309 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,325 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,331 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,338 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,350 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:14,351 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:14,351 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:14,352 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:14,352 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (1/1) ... [2023-11-26 11:55:14,358 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:14,375 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:14,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:14,436 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0ca767d3-5a76-4e1d-94aa-b5dc3147cada/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-26 11:55:14,460 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-26 11:55:14,460 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-26 11:55:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-26 11:55:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-26 11:55:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2023-11-26 11:55:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-26 11:55:14,461 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-26 11:55:14,461 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2023-11-26 11:55:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2023-11-26 11:55:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-26 11:55:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-26 11:55:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2023-11-26 11:55:14,462 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2023-11-26 11:55:14,462 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-26 11:55:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-26 11:55:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 11:55:14,463 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 11:55:14,463 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 11:55:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 11:55:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-26 11:55:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-26 11:55:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-26 11:55:14,464 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-26 11:55:14,464 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-26 11:55:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-26 11:55:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-26 11:55:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-26 11:55:14,465 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2023-11-26 11:55:14,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2023-11-26 11:55:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-26 11:55:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-26 11:55:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-26 11:55:14,466 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-26 11:55:14,466 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-26 11:55:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-26 11:55:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-26 11:55:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-26 11:55:14,467 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-26 11:55:14,467 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:55:14,468 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:55:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:55:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:55:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:55:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:55:14,469 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:55:14,470 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:55:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 11:55:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-26 11:55:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-26 11:55:14,471 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-26 11:55:14,471 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-26 11:55:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-26 11:55:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-26 11:55:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:14,472 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-26 11:55:14,472 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-26 11:55:14,473 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2023-11-26 11:55:14,473 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2023-11-26 11:55:14,683 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:14,686 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:15,731 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:15,815 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:15,815 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:55:15,816 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:15 BoogieIcfgContainer [2023-11-26 11:55:15,816 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:15,819 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:15,819 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:15,823 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:15,823 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:12" (1/3) ... [2023-11-26 11:55:15,824 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdede1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:15, skipping insertion in model container [2023-11-26 11:55:15,824 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:14" (2/3) ... [2023-11-26 11:55:15,825 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7fdede1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:15, skipping insertion in model container [2023-11-26 11:55:15,825 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:15" (3/3) ... [2023-11-26 11:55:15,826 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec14_product20.cil.c [2023-11-26 11:55:15,847 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:15,848 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:55:15,925 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:15,932 INFO L357 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, mHoare=true, 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;@4cb3d9b, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:15,933 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:55:15,939 INFO L276 IsEmpty]: Start isEmpty. Operand has 523 states, 399 states have (on average 1.7067669172932332) internal successors, (681), 417 states have internal predecessors, (681), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) [2023-11-26 11:55:15,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-26 11:55:15,954 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:15,954 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:15,955 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:15,960 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:15,961 INFO L85 PathProgramCache]: Analyzing trace with hash 543481051, now seen corresponding path program 1 times [2023-11-26 11:55:15,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:15,971 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1340715241] [2023-11-26 11:55:15,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:15,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:16,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:16,954 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:16,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,050 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:17,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:55:17,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,138 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:55:17,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,146 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:55:17,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,155 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:17,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,161 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2023-11-26 11:55:17,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:17,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:17,174 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:17,175 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:17,175 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1340715241] [2023-11-26 11:55:17,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1340715241] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:17,177 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:17,177 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:17,179 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927756087] [2023-11-26 11:55:17,180 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:17,187 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:17,187 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:17,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:17,237 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:17,241 INFO L87 Difference]: Start difference. First operand has 523 states, 399 states have (on average 1.7067669172932332) internal successors, (681), 417 states have internal predecessors, (681), 97 states have call successors, (97), 25 states have call predecessors, (97), 25 states have return successors, (97), 94 states have call predecessors, (97), 97 states have call successors, (97) Second operand has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:22,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:22,781 INFO L93 Difference]: Finished difference Result 1162 states and 1967 transitions. [2023-11-26 11:55:22,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-11-26 11:55:22,793 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 52 [2023-11-26 11:55:22,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:22,834 INFO L225 Difference]: With dead ends: 1162 [2023-11-26 11:55:22,834 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 11:55:22,850 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:22,855 INFO L413 NwaCegarLoop]: 473 mSDtfsCounter, 635 mSDsluCounter, 997 mSDsCounter, 0 mSdLazyCounter, 1626 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 712 SdHoareTripleChecker+Valid, 1470 SdHoareTripleChecker+Invalid, 1741 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 1626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:22,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [712 Valid, 1470 Invalid, 1741 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [115 Valid, 1626 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2023-11-26 11:55:22,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 11:55:23,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 522. [2023-11-26 11:55:23,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6892230576441103) internal successors, (674), 416 states have internal predecessors, (674), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:23,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 867 transitions. [2023-11-26 11:55:23,104 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 867 transitions. Word has length 52 [2023-11-26 11:55:23,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:23,105 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 867 transitions. [2023-11-26 11:55:23,106 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 6.8) internal successors, (34), 4 states have internal predecessors, (34), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:23,106 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 867 transitions. [2023-11-26 11:55:23,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2023-11-26 11:55:23,111 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:23,112 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:23,112 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:23,112 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:23,113 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:23,114 INFO L85 PathProgramCache]: Analyzing trace with hash 870369132, now seen corresponding path program 1 times [2023-11-26 11:55:23,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:23,114 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749018510] [2023-11-26 11:55:23,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:23,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:23,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,571 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:23,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,624 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:23,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,657 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:55:23,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,669 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:55:23,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:55:23,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,682 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:23,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,686 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:55:23,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,690 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:55:23,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:23,696 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:23,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:23,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749018510] [2023-11-26 11:55:23,697 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749018510] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:23,697 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:23,698 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:23,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [474921267] [2023-11-26 11:55:23,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:23,702 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:23,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:23,709 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:23,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:23,710 INFO L87 Difference]: Start difference. First operand 522 states and 867 transitions. Second operand has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:28,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:28,282 INFO L93 Difference]: Finished difference Result 1147 states and 1918 transitions. [2023-11-26 11:55:28,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:28,283 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 53 [2023-11-26 11:55:28,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:28,295 INFO L225 Difference]: With dead ends: 1147 [2023-11-26 11:55:28,295 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 11:55:28,301 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:28,303 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 627 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1617 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 704 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1617 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:28,304 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [704 Valid, 1447 Invalid, 1730 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [113 Valid, 1617 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-26 11:55:28,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 11:55:28,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 522. [2023-11-26 11:55:28,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.68671679197995) internal successors, (673), 416 states have internal predecessors, (673), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:28,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 866 transitions. [2023-11-26 11:55:28,441 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 866 transitions. Word has length 53 [2023-11-26 11:55:28,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:28,441 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 866 transitions. [2023-11-26 11:55:28,442 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.0) internal successors, (35), 4 states have internal predecessors, (35), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:28,442 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 866 transitions. [2023-11-26 11:55:28,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2023-11-26 11:55:28,445 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:28,446 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:28,446 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:28,446 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:28,447 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:28,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1975543159, now seen corresponding path program 1 times [2023-11-26 11:55:28,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:28,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1045006755] [2023-11-26 11:55:28,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:28,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:28,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:28,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:28,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:28,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,917 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:55:28,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,921 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2023-11-26 11:55:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,926 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:28,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,930 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2023-11-26 11:55:28,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,933 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:55:28,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:28,937 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:28,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:28,938 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1045006755] [2023-11-26 11:55:28,938 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1045006755] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:28,938 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:28,939 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:28,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159063223] [2023-11-26 11:55:28,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:28,940 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:28,940 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:28,941 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:28,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:28,942 INFO L87 Difference]: Start difference. First operand 522 states and 866 transitions. Second operand has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:33,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:33,474 INFO L93 Difference]: Finished difference Result 1147 states and 1917 transitions. [2023-11-26 11:55:33,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:33,475 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 54 [2023-11-26 11:55:33,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:33,485 INFO L225 Difference]: With dead ends: 1147 [2023-11-26 11:55:33,485 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 11:55:33,493 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:33,497 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 624 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1615 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 701 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1728 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1615 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:33,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [701 Valid, 1447 Invalid, 1728 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1615 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2023-11-26 11:55:33,508 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 11:55:33,618 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 522. [2023-11-26 11:55:33,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6842105263157894) internal successors, (672), 416 states have internal predecessors, (672), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:33,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 865 transitions. [2023-11-26 11:55:33,626 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 865 transitions. Word has length 54 [2023-11-26 11:55:33,627 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:33,627 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 865 transitions. [2023-11-26 11:55:33,627 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.2) internal successors, (36), 4 states have internal predecessors, (36), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:33,627 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 865 transitions. [2023-11-26 11:55:33,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2023-11-26 11:55:33,640 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:33,640 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:33,640 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-26 11:55:33,641 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:33,641 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:33,641 INFO L85 PathProgramCache]: Analyzing trace with hash 1437777736, now seen corresponding path program 1 times [2023-11-26 11:55:33,641 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:33,642 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1171907115] [2023-11-26 11:55:33,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:33,642 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:33,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,969 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:33,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:33,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:34,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:55:34,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:55:34,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,013 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:34,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:34,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,020 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:55:34,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:34,023 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:34,024 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:34,024 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1171907115] [2023-11-26 11:55:34,024 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1171907115] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:34,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:34,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:34,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155779204] [2023-11-26 11:55:34,025 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:34,026 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:34,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:34,027 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:34,027 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:34,028 INFO L87 Difference]: Start difference. First operand 522 states and 865 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:38,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:38,393 INFO L93 Difference]: Finished difference Result 1147 states and 1916 transitions. [2023-11-26 11:55:38,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:38,393 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 55 [2023-11-26 11:55:38,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:38,400 INFO L225 Difference]: With dead ends: 1147 [2023-11-26 11:55:38,400 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 11:55:38,404 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:38,405 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 621 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1613 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 698 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1726 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1613 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:38,406 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [698 Valid, 1447 Invalid, 1726 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1613 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-26 11:55:38,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 11:55:38,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 522. [2023-11-26 11:55:38,492 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.681704260651629) internal successors, (671), 416 states have internal predecessors, (671), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:38,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 864 transitions. [2023-11-26 11:55:38,498 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 864 transitions. Word has length 55 [2023-11-26 11:55:38,498 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:38,498 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 864 transitions. [2023-11-26 11:55:38,499 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:38,499 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 864 transitions. [2023-11-26 11:55:38,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-26 11:55:38,500 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:38,501 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:38,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-26 11:55:38,501 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:38,501 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:38,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1508496915, now seen corresponding path program 1 times [2023-11-26 11:55:38,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:38,502 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952852454] [2023-11-26 11:55:38,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:38,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:38,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,789 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:38,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,831 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:38,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:55:38,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-11-26 11:55:38,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,867 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-26 11:55:38,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,871 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:38,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,874 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2023-11-26 11:55:38,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,878 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2023-11-26 11:55:38,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,882 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:38,882 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:38,883 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952852454] [2023-11-26 11:55:38,884 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952852454] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:38,884 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:38,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-26 11:55:38,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248090840] [2023-11-26 11:55:38,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:38,886 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-26 11:55:38,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:38,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-26 11:55:38,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-26 11:55:38,888 INFO L87 Difference]: Start difference. First operand 522 states and 864 transitions. Second operand has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:42,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:42,583 INFO L93 Difference]: Finished difference Result 1147 states and 1915 transitions. [2023-11-26 11:55:42,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:42,584 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 56 [2023-11-26 11:55:42,584 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:42,591 INFO L225 Difference]: With dead ends: 1147 [2023-11-26 11:55:42,591 INFO L226 Difference]: Without dead ends: 637 [2023-11-26 11:55:42,595 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-11-26 11:55:42,596 INFO L413 NwaCegarLoop]: 467 mSDtfsCounter, 618 mSDsluCounter, 980 mSDsCounter, 0 mSdLazyCounter, 1611 mSolverCounterSat, 113 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 1447 SdHoareTripleChecker+Invalid, 1724 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 113 IncrementalHoareTripleChecker+Valid, 1611 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:42,596 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 1447 Invalid, 1724 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [113 Valid, 1611 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2023-11-26 11:55:42,598 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 637 states. [2023-11-26 11:55:42,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 637 to 522. [2023-11-26 11:55:42,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 522 states, 399 states have (on average 1.6791979949874687) internal successors, (670), 416 states have internal predecessors, (670), 97 states have call successors, (97), 26 states have call predecessors, (97), 25 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:42,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 522 states to 522 states and 863 transitions. [2023-11-26 11:55:42,723 INFO L78 Accepts]: Start accepts. Automaton has 522 states and 863 transitions. Word has length 56 [2023-11-26 11:55:42,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:42,724 INFO L495 AbstractCegarLoop]: Abstraction has 522 states and 863 transitions. [2023-11-26 11:55:42,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.6) internal successors, (38), 4 states have internal predecessors, (38), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:42,724 INFO L276 IsEmpty]: Start isEmpty. Operand 522 states and 863 transitions. [2023-11-26 11:55:42,725 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2023-11-26 11:55:42,726 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:42,726 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:42,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-26 11:55:42,727 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:42,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:42,727 INFO L85 PathProgramCache]: Analyzing trace with hash -1032597724, now seen corresponding path program 1 times [2023-11-26 11:55:42,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:42,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [439821474] [2023-11-26 11:55:42,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:42,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,077 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:43,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,103 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:43,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,108 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:55:43,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,139 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2023-11-26 11:55:43,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,141 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 35 [2023-11-26 11:55:43,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,145 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:43,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,148 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:43,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,150 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2023-11-26 11:55:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:43,153 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:43,153 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:43,154 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [439821474] [2023-11-26 11:55:43,154 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [439821474] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:43,154 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:43,154 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:43,154 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676365964] [2023-11-26 11:55:43,155 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,155 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:43,155 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:43,156 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:43,156 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:43,156 INFO L87 Difference]: Start difference. First operand 522 states and 863 transitions. Second operand has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:47,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:47,509 INFO L93 Difference]: Finished difference Result 1170 states and 1957 transitions. [2023-11-26 11:55:47,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-11-26 11:55:47,514 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 57 [2023-11-26 11:55:47,515 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:47,521 INFO L225 Difference]: With dead ends: 1170 [2023-11-26 11:55:47,521 INFO L226 Difference]: Without dead ends: 664 [2023-11-26 11:55:47,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:47,527 INFO L413 NwaCegarLoop]: 469 mSDtfsCounter, 727 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2345 mSolverCounterSat, 115 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 813 SdHoareTripleChecker+Valid, 1800 SdHoareTripleChecker+Invalid, 2460 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 115 IncrementalHoareTripleChecker+Valid, 2345 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.6s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:47,527 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [813 Valid, 1800 Invalid, 2460 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [115 Valid, 2345 Invalid, 0 Unknown, 0 Unchecked, 3.6s Time] [2023-11-26 11:55:47,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-26 11:55:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 541. [2023-11-26 11:55:47,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6738609112709832) internal successors, (698), 434 states have internal predecessors, (698), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:47,631 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 891 transitions. [2023-11-26 11:55:47,631 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 891 transitions. Word has length 57 [2023-11-26 11:55:47,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:47,631 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 891 transitions. [2023-11-26 11:55:47,632 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.5) internal successors, (39), 5 states have internal predecessors, (39), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:47,632 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 891 transitions. [2023-11-26 11:55:47,633 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2023-11-26 11:55:47,633 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:47,633 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:47,633 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-26 11:55:47,633 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:47,634 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:47,634 INFO L85 PathProgramCache]: Analyzing trace with hash -1055931660, now seen corresponding path program 1 times [2023-11-26 11:55:47,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:47,634 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [763904719] [2023-11-26 11:55:47,634 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:47,634 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:47,656 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:47,983 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:47,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,010 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,015 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:55:48,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,045 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-26 11:55:48,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,048 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2023-11-26 11:55:48,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,051 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,053 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:55:48,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,056 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 52 [2023-11-26 11:55:48,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:48,058 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:48,058 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [763904719] [2023-11-26 11:55:48,058 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [763904719] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:48,059 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:48,059 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:48,059 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973474646] [2023-11-26 11:55:48,059 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:48,059 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:48,059 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:48,060 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:48,060 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:48,060 INFO L87 Difference]: Start difference. First operand 541 states and 891 transitions. Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:51,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:51,780 INFO L93 Difference]: Finished difference Result 1153 states and 1907 transitions. [2023-11-26 11:55:51,781 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:51,781 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 58 [2023-11-26 11:55:51,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:51,787 INFO L225 Difference]: With dead ends: 1153 [2023-11-26 11:55:51,787 INFO L226 Difference]: Without dead ends: 664 [2023-11-26 11:55:51,790 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:51,791 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 703 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 2330 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 789 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 2439 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:51,791 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [789 Valid, 1786 Invalid, 2439 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2330 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2023-11-26 11:55:51,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-26 11:55:51,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 541. [2023-11-26 11:55:51,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6618705035971224) internal successors, (693), 434 states have internal predecessors, (693), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:51,880 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 886 transitions. [2023-11-26 11:55:51,881 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 886 transitions. Word has length 58 [2023-11-26 11:55:51,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:51,881 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 886 transitions. [2023-11-26 11:55:51,881 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 5 states have internal predecessors, (40), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:51,882 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 886 transitions. [2023-11-26 11:55:51,883 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2023-11-26 11:55:51,883 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:51,883 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:51,883 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-26 11:55:51,884 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:51,884 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:51,884 INFO L85 PathProgramCache]: Analyzing trace with hash -2097734295, now seen corresponding path program 1 times [2023-11-26 11:55:51,884 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:51,884 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462215677] [2023-11-26 11:55:51,885 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:51,885 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:51,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,256 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,261 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:55:52,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,293 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:55:52,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,295 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-26 11:55:52,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,299 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,303 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2023-11-26 11:55:52,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,305 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2023-11-26 11:55:52,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:52,309 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:52,310 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:52,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462215677] [2023-11-26 11:55:52,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [462215677] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:52,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:52,311 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:52,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6875104] [2023-11-26 11:55:52,311 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:52,312 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:52,312 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:52,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:52,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:52,313 INFO L87 Difference]: Start difference. First operand 541 states and 886 transitions. Second operand has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:56,138 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:56,139 INFO L93 Difference]: Finished difference Result 1153 states and 1902 transitions. [2023-11-26 11:55:56,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-11-26 11:55:56,140 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) Word has length 59 [2023-11-26 11:55:56,140 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:56,145 INFO L225 Difference]: With dead ends: 1153 [2023-11-26 11:55:56,146 INFO L226 Difference]: Without dead ends: 664 [2023-11-26 11:55:56,149 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-11-26 11:55:56,149 INFO L413 NwaCegarLoop]: 459 mSDtfsCounter, 697 mSDsluCounter, 1327 mSDsCounter, 0 mSdLazyCounter, 2310 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 783 SdHoareTripleChecker+Valid, 1786 SdHoareTripleChecker+Invalid, 2419 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 2310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:56,150 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [783 Valid, 1786 Invalid, 2419 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 2310 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2023-11-26 11:55:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 664 states. [2023-11-26 11:55:56,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 664 to 541. [2023-11-26 11:55:56,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 541 states, 417 states have (on average 1.6498800959232613) internal successors, (688), 434 states have internal predecessors, (688), 97 states have call successors, (97), 27 states have call predecessors, (97), 26 states have return successors, (96), 93 states have call predecessors, (96), 96 states have call successors, (96) [2023-11-26 11:55:56,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 541 states to 541 states and 881 transitions. [2023-11-26 11:55:56,239 INFO L78 Accepts]: Start accepts. Automaton has 541 states and 881 transitions. Word has length 59 [2023-11-26 11:55:56,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:56,239 INFO L495 AbstractCegarLoop]: Abstraction has 541 states and 881 transitions. [2023-11-26 11:55:56,239 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 6.833333333333333) internal successors, (41), 5 states have internal predecessors, (41), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8) [2023-11-26 11:55:56,240 INFO L276 IsEmpty]: Start isEmpty. Operand 541 states and 881 transitions. [2023-11-26 11:55:56,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-26 11:55:56,241 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:56,241 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:56,241 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-26 11:55:56,241 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION === [timeShiftErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:56,242 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:56,242 INFO L85 PathProgramCache]: Analyzing trace with hash -352328231, now seen corresponding path program 1 times [2023-11-26 11:55:56,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:56,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1797990965] [2023-11-26 11:55:56,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:56,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,553 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:56,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,576 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:56,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,580 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-11-26 11:55:56,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,611 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2023-11-26 11:55:56,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,613 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2023-11-26 11:55:56,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,617 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:56,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,620 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 49 [2023-11-26 11:55:56,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,622 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 54 [2023-11-26 11:55:56,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:56,625 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-26 11:55:56,625 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:56,625 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1797990965] [2023-11-26 11:55:56,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1797990965] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:56,626 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:56,626 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-26 11:55:56,626 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [336140974] [2023-11-26 11:55:56,626 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:56,627 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-26 11:55:56,627 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:56,628 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-26 11:55:56,628 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-26 11:55:56,628 INFO L87 Difference]: Start difference. First operand 541 states and 881 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 5 states have internal predecessors, (42), 2 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 2 states have call predecessors, (8), 2 states have call successors, (8)