./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0e0057cc Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/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_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/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_e62873ff-f709-4513-bb20-2845f017e1ed/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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- This is Ultimate 0.2.4-dev-0e0057c [2023-11-26 11:55:01,476 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-26 11:55:01,597 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-26 11:55:01,602 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-26 11:55:01,602 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-26 11:55:01,636 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-26 11:55:01,637 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-26 11:55:01,638 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-26 11:55:01,638 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-26 11:55:01,639 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-26 11:55:01,640 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-26 11:55:01,640 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-26 11:55:01,641 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-26 11:55:01,642 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-26 11:55:01,642 INFO L153 SettingsManager]: * Use SBE=true [2023-11-26 11:55:01,643 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-26 11:55:01,644 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-26 11:55:01,644 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-26 11:55:01,645 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-26 11:55:01,645 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-26 11:55:01,646 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-26 11:55:01,650 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-26 11:55:01,651 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-26 11:55:01,651 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-26 11:55:01,652 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-26 11:55:01,652 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-26 11:55:01,653 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-26 11:55:01,653 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-26 11:55:01,654 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-26 11:55:01,654 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-26 11:55:01,655 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-26 11:55:01,655 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:01,656 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-26 11:55:01,656 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-26 11:55:01,656 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-26 11:55:01,657 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-26 11:55:01,657 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-26 11:55:01,658 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-26 11:55:01,658 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-26 11:55:01,658 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-26 11:55:01,658 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-26 11:55:01,659 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-26 11:55:01,660 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_e62873ff-f709-4513-bb20-2845f017e1ed/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2023-11-26 11:55:01,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-26 11:55:02,023 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-26 11:55:02,026 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-26 11:55:02,027 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-26 11:55:02,031 INFO L274 PluginConnector]: CDTParser initialized [2023-11-26 11:55:02,033 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-11-26 11:55:05,197 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-26 11:55:05,653 INFO L384 CDTParser]: Found 1 translation units. [2023-11-26 11:55:05,654 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2023-11-26 11:55:05,695 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/data/f4c297fae/a08501d29f604e608abd4c0cf0db6b60/FLAG59e846799 [2023-11-26 11:55:05,711 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/data/f4c297fae/a08501d29f604e608abd4c0cf0db6b60 [2023-11-26 11:55:05,713 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-26 11:55:05,715 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-26 11:55:05,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:05,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-26 11:55:05,728 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-26 11:55:05,729 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:05" (1/1) ... [2023-11-26 11:55:05,733 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@bc3934d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:05, skipping insertion in model container [2023-11-26 11:55:05,734 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 11:55:05" (1/1) ... [2023-11-26 11:55:05,850 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-26 11:55:06,238 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_e62873ff-f709-4513-bb20-2845f017e1ed/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2023-11-26 11:55:06,507 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:06,533 INFO L202 MainTranslator]: Completed pre-run [2023-11-26 11:55:06,544 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-26 11:55:06,546 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [86] [2023-11-26 11:55:06,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [452] [2023-11-26 11:55:06,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [553] [2023-11-26 11:55:06,547 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [562] [2023-11-26 11:55:06,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [916] [2023-11-26 11:55:06,548 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1099] [2023-11-26 11:55:06,549 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [1770] [2023-11-26 11:55:06,550 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1783] [2023-11-26 11:55:06,553 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [1903] [2023-11-26 11:55:06,586 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_e62873ff-f709-4513-bb20-2845f017e1ed/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2023-11-26 11:55:06,731 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-26 11:55:06,767 INFO L206 MainTranslator]: Completed translation [2023-11-26 11:55:06,768 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06 WrapperNode [2023-11-26 11:55:06,768 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-26 11:55:06,770 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:06,770 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-26 11:55:06,770 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-26 11:55:06,779 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,813 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,875 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 834 [2023-11-26 11:55:06,876 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-26 11:55:06,877 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-26 11:55:06,877 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-26 11:55:06,877 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-26 11:55:06,890 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,891 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,899 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,932 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 11:55:06,933 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,933 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:06,959 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:07,006 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:07,017 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:07,039 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:07,103 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-26 11:55:07,104 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-26 11:55:07,104 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-26 11:55:07,105 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-26 11:55:07,106 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (1/1) ... [2023-11-26 11:55:07,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2023-11-26 11:55:07,146 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:07,182 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2023-11-26 11:55:07,201 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2023-11-26 11:55:07,233 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2023-11-26 11:55:07,233 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2023-11-26 11:55:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-26 11:55:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-26 11:55:07,234 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-26 11:55:07,234 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-26 11:55:07,235 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-26 11:55:07,235 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-26 11:55:07,236 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-26 11:55:07,236 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-26 11:55:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-26 11:55:07,237 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-26 11:55:07,237 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-26 11:55:07,238 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-26 11:55:07,238 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-26 11:55:07,239 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-26 11:55:07,239 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-26 11:55:07,240 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-26 11:55:07,240 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-26 11:55:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-26 11:55:07,243 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-26 11:55:07,243 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-26 11:55:07,244 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-26 11:55:07,244 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-26 11:55:07,245 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-26 11:55:07,245 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-26 11:55:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-26 11:55:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-26 11:55:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-26 11:55:07,246 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-26 11:55:07,246 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-26 11:55:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-26 11:55:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-26 11:55:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-26 11:55:07,247 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-26 11:55:07,247 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-26 11:55:07,248 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-26 11:55:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-26 11:55:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-26 11:55:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-26 11:55:07,248 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-26 11:55:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-26 11:55:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-26 11:55:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-26 11:55:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-26 11:55:07,249 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-26 11:55:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-26 11:55:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-26 11:55:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-26 11:55:07,250 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-26 11:55:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-26 11:55:07,251 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-26 11:55:07,252 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-26 11:55:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-26 11:55:07,253 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-26 11:55:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-26 11:55:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-26 11:55:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-26 11:55:07,254 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-26 11:55:07,254 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-26 11:55:07,255 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-26 11:55:07,256 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-26 11:55:07,256 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-26 11:55:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-26 11:55:07,257 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-26 11:55:07,257 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-26 11:55:07,257 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-26 11:55:07,502 INFO L241 CfgBuilder]: Building ICFG [2023-11-26 11:55:07,505 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-26 11:55:08,776 INFO L282 CfgBuilder]: Performing block encoding [2023-11-26 11:55:08,919 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-26 11:55:08,919 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-26 11:55:08,920 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:08 BoogieIcfgContainer [2023-11-26 11:55:08,920 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-26 11:55:08,924 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-26 11:55:08,924 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-26 11:55:08,928 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-26 11:55:08,928 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 11:55:05" (1/3) ... [2023-11-26 11:55:08,929 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73274fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:08, skipping insertion in model container [2023-11-26 11:55:08,929 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 11:55:06" (2/3) ... [2023-11-26 11:55:08,931 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@73274fda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 11:55:08, skipping insertion in model container [2023-11-26 11:55:08,931 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 11:55:08" (3/3) ... [2023-11-26 11:55:08,932 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2023-11-26 11:55:08,955 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-26 11:55:08,955 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-26 11:55:09,040 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-26 11:55:09,047 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;@a894546, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-26 11:55:09,048 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-26 11:55:09,056 INFO L276 IsEmpty]: Start isEmpty. Operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2023-11-26 11:55:09,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2023-11-26 11:55:09,087 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:09,088 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:09,088 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:09,094 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:09,094 INFO L85 PathProgramCache]: Analyzing trace with hash -1783266936, now seen corresponding path program 1 times [2023-11-26 11:55:09,104 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:09,105 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889961924] [2023-11-26 11:55:09,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:09,106 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:09,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,097 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:10,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,166 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:10,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,225 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:55:10,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,269 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:55:10,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:10,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:10,357 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-26 11:55:10,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2023-11-26 11:55:11,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,187 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:11,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:11,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2023-11-26 11:55:11,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,352 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2023-11-26 11:55:11,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:11,363 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2023-11-26 11:55:11,364 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:11,364 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889961924] [2023-11-26 11:55:11,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889961924] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:11,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:11,366 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-11-26 11:55:11,368 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944394372] [2023-11-26 11:55:11,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:11,375 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2023-11-26 11:55:11,375 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:11,431 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2023-11-26 11:55:11,432 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2023-11-26 11:55:11,438 INFO L87 Difference]: Start difference. First operand has 527 states, 412 states have (on average 1.7427184466019416) internal successors, (718), 433 states have internal predecessors, (718), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:23,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:23,894 INFO L93 Difference]: Finished difference Result 1497 states and 2633 transitions. [2023-11-26 11:55:23,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-26 11:55:23,902 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 87 [2023-11-26 11:55:23,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:23,951 INFO L225 Difference]: With dead ends: 1497 [2023-11-26 11:55:23,951 INFO L226 Difference]: Without dead ends: 970 [2023-11-26 11:55:23,970 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=69, Invalid=171, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:55:23,977 INFO L413 NwaCegarLoop]: 429 mSDtfsCounter, 2215 mSDsluCounter, 1943 mSDsCounter, 0 mSdLazyCounter, 4558 mSolverCounterSat, 851 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2288 SdHoareTripleChecker+Valid, 2372 SdHoareTripleChecker+Invalid, 5409 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 851 IncrementalHoareTripleChecker+Valid, 4558 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 9.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:23,981 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2288 Valid, 2372 Invalid, 5409 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [851 Valid, 4558 Invalid, 0 Unknown, 0 Unchecked, 9.2s Time] [2023-11-26 11:55:24,009 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 970 states. [2023-11-26 11:55:24,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 970 to 525. [2023-11-26 11:55:24,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 525 states, 412 states have (on average 1.7281553398058251) internal successors, (712), 431 states have internal predecessors, (712), 91 states have call successors, (91), 22 states have call predecessors, (91), 21 states have return successors, (86), 84 states have call predecessors, (86), 86 states have call successors, (86) [2023-11-26 11:55:24,400 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 525 states to 525 states and 889 transitions. [2023-11-26 11:55:24,403 INFO L78 Accepts]: Start accepts. Automaton has 525 states and 889 transitions. Word has length 87 [2023-11-26 11:55:24,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:24,405 INFO L495 AbstractCegarLoop]: Abstraction has 525 states and 889 transitions. [2023-11-26 11:55:24,405 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 6 states have internal predecessors, (53), 2 states have call successors, (12), 5 states have call predecessors, (12), 3 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:24,406 INFO L276 IsEmpty]: Start isEmpty. Operand 525 states and 889 transitions. [2023-11-26 11:55:24,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2023-11-26 11:55:24,420 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:24,421 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:24,421 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-26 11:55:24,422 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:24,422 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:24,423 INFO L85 PathProgramCache]: Analyzing trace with hash -20505094, now seen corresponding path program 1 times [2023-11-26 11:55:24,423 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:24,424 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704635372] [2023-11-26 11:55:24,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:24,425 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:24,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,968 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:24,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:24,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:55:24,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,007 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2023-11-26 11:55:25,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,052 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:25,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-26 11:55:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,512 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 44 [2023-11-26 11:55:25,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,623 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:25,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,703 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:25,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,707 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:55:25,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,751 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-26 11:55:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:25,757 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-11-26 11:55:25,757 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:25,758 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704635372] [2023-11-26 11:55:25,758 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704635372] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:25,758 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-26 11:55:25,759 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-26 11:55:25,759 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1003226203] [2023-11-26 11:55:25,759 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:25,761 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-26 11:55:25,762 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:25,763 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-26 11:55:25,763 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2023-11-26 11:55:25,764 INFO L87 Difference]: Start difference. First operand 525 states and 889 transitions. Second operand has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:37,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:37,609 INFO L93 Difference]: Finished difference Result 1333 states and 2299 transitions. [2023-11-26 11:55:37,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-26 11:55:37,610 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 93 [2023-11-26 11:55:37,611 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:37,622 INFO L225 Difference]: With dead ends: 1333 [2023-11-26 11:55:37,622 INFO L226 Difference]: Without dead ends: 811 [2023-11-26 11:55:37,627 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 3.9s TimeCoverageRelationStatistics Valid=81, Invalid=261, Unknown=0, NotChecked=0, Total=342 [2023-11-26 11:55:37,630 INFO L413 NwaCegarLoop]: 455 mSDtfsCounter, 1417 mSDsluCounter, 2540 mSDsCounter, 0 mSdLazyCounter, 5648 mSolverCounterSat, 363 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1488 SdHoareTripleChecker+Valid, 2995 SdHoareTripleChecker+Invalid, 6011 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 363 IncrementalHoareTripleChecker+Valid, 5648 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:37,631 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1488 Valid, 2995 Invalid, 6011 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [363 Valid, 5648 Invalid, 0 Unknown, 0 Unchecked, 8.1s Time] [2023-11-26 11:55:37,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 811 states. [2023-11-26 11:55:37,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 811 to 529. [2023-11-26 11:55:37,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 415 states have (on average 1.7204819277108434) internal successors, (714), 434 states have internal predecessors, (714), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (88), 85 states have call predecessors, (88), 86 states have call successors, (88) [2023-11-26 11:55:37,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 893 transitions. [2023-11-26 11:55:37,858 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 893 transitions. Word has length 93 [2023-11-26 11:55:37,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:37,859 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 893 transitions. [2023-11-26 11:55:37,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.8) internal successors, (58), 6 states have internal predecessors, (58), 2 states have call successors, (12), 5 states have call predecessors, (12), 4 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:37,859 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 893 transitions. [2023-11-26 11:55:37,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2023-11-26 11:55:37,865 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:37,866 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:37,866 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-26 11:55:37,866 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:37,867 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:37,867 INFO L85 PathProgramCache]: Analyzing trace with hash -255668322, now seen corresponding path program 1 times [2023-11-26 11:55:37,868 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:37,868 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [683306672] [2023-11-26 11:55:37,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:37,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:37,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:38,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,321 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:38,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,359 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:38,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,371 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:55:38,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:38,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,409 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:38,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,830 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:38,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:38,876 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:38,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,008 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:39,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,060 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:55:39,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,125 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2023-11-26 11:55:39,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:55:39,156 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:39,156 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [683306672] [2023-11-26 11:55:39,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [683306672] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:39,157 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [323776848] [2023-11-26 11:55:39,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:39,157 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:39,158 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:39,168 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:39,189 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-11-26 11:55:39,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:39,665 INFO L262 TraceCheckSpWp]: Trace formula consists of 1786 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:39,678 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:39,708 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:55:39,708 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:39,709 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [323776848] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:39,709 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:39,709 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-26 11:55:39,710 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [160770732] [2023-11-26 11:55:39,710 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:39,711 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:39,711 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:39,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:39,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:39,713 INFO L87 Difference]: Start difference. First operand 529 states and 893 transitions. Second operand has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:40,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:40,320 INFO L93 Difference]: Finished difference Result 1389 states and 2366 transitions. [2023-11-26 11:55:40,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:40,321 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) Word has length 99 [2023-11-26 11:55:40,324 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:40,336 INFO L225 Difference]: With dead ends: 1389 [2023-11-26 11:55:40,336 INFO L226 Difference]: Without dead ends: 938 [2023-11-26 11:55:40,342 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 121 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:40,347 INFO L413 NwaCegarLoop]: 944 mSDtfsCounter, 814 mSDsluCounter, 662 mSDsCounter, 0 mSdLazyCounter, 132 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 814 SdHoareTripleChecker+Valid, 1606 SdHoareTripleChecker+Invalid, 158 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 132 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:40,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [814 Valid, 1606 Invalid, 158 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 132 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:40,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 938 states. [2023-11-26 11:55:40,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 938 to 923. [2023-11-26 11:55:40,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 923 states, 721 states have (on average 1.6920943134535367) internal successors, (1220), 754 states have internal predecessors, (1220), 162 states have call successors, (162), 38 states have call predecessors, (162), 39 states have return successors, (174), 156 states have call predecessors, (174), 157 states have call successors, (174) [2023-11-26 11:55:40,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 923 states to 923 states and 1556 transitions. [2023-11-26 11:55:40,684 INFO L78 Accepts]: Start accepts. Automaton has 923 states and 1556 transitions. Word has length 99 [2023-11-26 11:55:40,685 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:40,685 INFO L495 AbstractCegarLoop]: Abstraction has 923 states and 1556 transitions. [2023-11-26 11:55:40,686 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.0) internal successors, (63), 3 states have internal predecessors, (63), 2 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 2 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-26 11:55:40,686 INFO L276 IsEmpty]: Start isEmpty. Operand 923 states and 1556 transitions. [2023-11-26 11:55:40,691 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2023-11-26 11:55:40,692 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:40,692 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:40,705 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-11-26 11:55:40,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2023-11-26 11:55:40,903 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:40,903 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:40,903 INFO L85 PathProgramCache]: Analyzing trace with hash 1735646369, now seen corresponding path program 1 times [2023-11-26 11:55:40,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:40,904 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143805907] [2023-11-26 11:55:40,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:40,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:40,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:41,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:41,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,406 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:41,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,427 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:55:41,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:41,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:41,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:41,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,035 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:42,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,167 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:42,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,336 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,375 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:55:42,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,403 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:42,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,436 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2023-11-26 11:55:42,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:55:42,443 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:42,443 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143805907] [2023-11-26 11:55:42,446 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143805907] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:42,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484988069] [2023-11-26 11:55:42,447 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:42,447 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:42,447 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:42,449 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:42,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-11-26 11:55:42,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:42,949 INFO L262 TraceCheckSpWp]: Trace formula consists of 1804 conjuncts, 2 conjunts are in the unsatisfiable core [2023-11-26 11:55:42,968 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:43,000 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2023-11-26 11:55:43,001 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:43,001 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484988069] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:43,001 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:43,002 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [11] total 11 [2023-11-26 11:55:43,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605054688] [2023-11-26 11:55:43,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:43,003 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-11-26 11:55:43,003 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:43,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-11-26 11:55:43,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:43,005 INFO L87 Difference]: Start difference. First operand 923 states and 1556 transitions. Second operand has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 11:55:43,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:43,942 INFO L93 Difference]: Finished difference Result 2533 states and 4311 transitions. [2023-11-26 11:55:43,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-11-26 11:55:43,943 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) Word has length 103 [2023-11-26 11:55:43,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:43,967 INFO L225 Difference]: With dead ends: 2533 [2023-11-26 11:55:43,967 INFO L226 Difference]: Without dead ends: 1688 [2023-11-26 11:55:43,976 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 137 GetRequests, 127 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2023-11-26 11:55:43,979 INFO L413 NwaCegarLoop]: 814 mSDtfsCounter, 874 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 874 SdHoareTripleChecker+Valid, 1442 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:43,982 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [874 Valid, 1442 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-26 11:55:43,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1688 states. [2023-11-26 11:55:44,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1688 to 1673. [2023-11-26 11:55:44,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1673 states, 1300 states have (on average 1.6815384615384616) internal successors, (2186), 1360 states have internal predecessors, (2186), 301 states have call successors, (301), 70 states have call predecessors, (301), 71 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-26 11:55:44,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1673 states to 1673 states and 2838 transitions. [2023-11-26 11:55:44,544 INFO L78 Accepts]: Start accepts. Automaton has 1673 states and 2838 transitions. Word has length 103 [2023-11-26 11:55:44,545 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:44,545 INFO L495 AbstractCegarLoop]: Abstraction has 1673 states and 2838 transitions. [2023-11-26 11:55:44,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 21.666666666666668) internal successors, (65), 3 states have internal predecessors, (65), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 2 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 11:55:44,546 INFO L276 IsEmpty]: Start isEmpty. Operand 1673 states and 2838 transitions. [2023-11-26 11:55:44,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-11-26 11:55:44,551 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:44,552 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:44,571 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:44,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:44,762 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:44,763 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:44,763 INFO L85 PathProgramCache]: Analyzing trace with hash 2113142343, now seen corresponding path program 1 times [2023-11-26 11:55:44,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:44,763 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [284948197] [2023-11-26 11:55:44,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:44,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:44,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:45,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,200 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:45,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,223 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:45,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,234 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2023-11-26 11:55:45,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,249 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:45,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,254 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:45,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,745 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2023-11-26 11:55:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,875 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:45,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,967 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:45,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:45,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:55:46,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,111 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:46,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,136 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:55:46,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,141 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:55:46,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [284948197] [2023-11-26 11:55:46,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [284948197] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:46,142 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1678797166] [2023-11-26 11:55:46,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:46,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:46,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:46,144 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:46,172 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-11-26 11:55:46,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:46,592 INFO L262 TraceCheckSpWp]: Trace formula consists of 1808 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:46,597 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:46,677 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:55:46,677 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:46,677 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1678797166] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:46,677 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:46,677 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-26 11:55:46,678 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [763911121] [2023-11-26 11:55:46,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:46,679 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:46,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:46,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:46,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:55:46,681 INFO L87 Difference]: Start difference. First operand 1673 states and 2838 transitions. Second operand has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 11:55:47,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-26 11:55:47,379 INFO L93 Difference]: Finished difference Result 3350 states and 5683 transitions. [2023-11-26 11:55:47,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-26 11:55:47,380 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) Word has length 106 [2023-11-26 11:55:47,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-26 11:55:47,396 INFO L225 Difference]: With dead ends: 3350 [2023-11-26 11:55:47,396 INFO L226 Difference]: Without dead ends: 1682 [2023-11-26 11:55:47,406 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 143 GetRequests, 128 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2023-11-26 11:55:47,407 INFO L413 NwaCegarLoop]: 861 mSDtfsCounter, 20 mSDsluCounter, 1715 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 2576 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-26 11:55:47,408 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 2576 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-26 11:55:47,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1682 states. [2023-11-26 11:55:47,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1682 to 1682. [2023-11-26 11:55:47,823 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1682 states, 1308 states have (on average 1.680428134556575) internal successors, (2198), 1368 states have internal predecessors, (2198), 301 states have call successors, (301), 71 states have call predecessors, (301), 72 states have return successors, (351), 293 states have call predecessors, (351), 296 states have call successors, (351) [2023-11-26 11:55:47,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1682 states to 1682 states and 2850 transitions. [2023-11-26 11:55:47,836 INFO L78 Accepts]: Start accepts. Automaton has 1682 states and 2850 transitions. Word has length 106 [2023-11-26 11:55:47,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-26 11:55:47,837 INFO L495 AbstractCegarLoop]: Abstraction has 1682 states and 2850 transitions. [2023-11-26 11:55:47,837 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 18.25) internal successors, (73), 4 states have internal predecessors, (73), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12) [2023-11-26 11:55:47,837 INFO L276 IsEmpty]: Start isEmpty. Operand 1682 states and 2850 transitions. [2023-11-26 11:55:47,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2023-11-26 11:55:47,841 INFO L187 NwaCegarLoop]: Found error trace [2023-11-26 11:55:47,842 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-26 11:55:47,850 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-11-26 11:55:48,050 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:48,050 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-26 11:55:48,050 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-26 11:55:48,050 INFO L85 PathProgramCache]: Analyzing trace with hash -1939288130, now seen corresponding path program 1 times [2023-11-26 11:55:48,051 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-26 11:55:48,051 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1691646] [2023-11-26 11:55:48,051 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:48,051 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-26 11:55:48,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,376 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:48,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,397 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,422 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2023-11-26 11:55:48,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,431 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2023-11-26 11:55:48,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2023-11-26 11:55:48,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,825 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2023-11-26 11:55:48,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,909 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:48,980 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-26 11:55:48,982 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:49,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-26 11:55:49,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:49,090 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-26 11:55:49,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:49,110 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2023-11-26 11:55:49,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:49,115 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-11-26 11:55:49,115 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-26 11:55:49,115 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1691646] [2023-11-26 11:55:49,115 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1691646] provided 0 perfect and 1 imperfect interpolant sequences [2023-11-26 11:55:49,116 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2057834276] [2023-11-26 11:55:49,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-26 11:55:49,116 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-11-26 11:55:49,116 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 [2023-11-26 11:55:49,117 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-11-26 11:55:49,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e62873ff-f709-4513-bb20-2845f017e1ed/bin/uautomizer-verify-VRDe98Ueme/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-11-26 11:55:49,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-26 11:55:49,557 INFO L262 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 3 conjunts are in the unsatisfiable core [2023-11-26 11:55:49,563 INFO L285 TraceCheckSpWp]: Computing forward predicates... [2023-11-26 11:55:49,637 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-11-26 11:55:49,637 INFO L323 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-11-26 11:55:49,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2057834276] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-26 11:55:49,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-11-26 11:55:49,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [14] total 16 [2023-11-26 11:55:49,638 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [567427469] [2023-11-26 11:55:49,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-26 11:55:49,640 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-26 11:55:49,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-26 11:55:49,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-26 11:55:49,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=205, Unknown=0, NotChecked=0, Total=240 [2023-11-26 11:55:49,641 INFO L87 Difference]: Start difference. First operand 1682 states and 2850 transitions. Second operand has 4 states, 4 states have (on average 18.5) internal successors, (74), 4 states have internal predecessors, (74), 2 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (12), 1 states have call predecessors, (12), 2 states have call successors, (12)