./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 527bcce2 Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/config/AutomizerReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx --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 d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 --- Real Ultimate output --- This is Ultimate 0.2.3-dev-527bcce [2023-11-21 21:03:06,408 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-21 21:03:06,519 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/config/svcomp-Reach-32bit-Automizer_Default.epf [2023-11-21 21:03:06,526 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-21 21:03:06,527 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-21 21:03:06,566 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-21 21:03:06,566 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-21 21:03:06,567 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-21 21:03:06,568 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2023-11-21 21:03:06,573 INFO L153 SettingsManager]: * Use memory slicer=true [2023-11-21 21:03:06,573 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-21 21:03:06,574 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-21 21:03:06,574 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-11-21 21:03:06,576 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2023-11-21 21:03:06,576 INFO L153 SettingsManager]: * Use SBE=true [2023-11-21 21:03:06,577 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-21 21:03:06,577 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-21 21:03:06,578 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-21 21:03:06,578 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-21 21:03:06,579 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-21 21:03:06,580 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-21 21:03:06,580 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-21 21:03:06,580 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-21 21:03:06,581 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-21 21:03:06,581 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-21 21:03:06,582 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-21 21:03:06,582 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-21 21:03:06,583 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-11-21 21:03:06,583 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-21 21:03:06,584 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-21 21:03:06,585 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:06,585 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-21 21:03:06,585 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-21 21:03:06,585 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-21 21:03:06,586 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2023-11-21 21:03:06,586 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-21 21:03:06,586 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-21 21:03:06,586 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-11-21 21:03:06,587 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-21 21:03:06,587 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-11-21 21:03:06,587 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-21 21:03:06,587 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_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d5d3c0f581b3d52ccfb3e43d6fb6458a66cd40c307750c0d7336040b60b78e76 [2023-11-21 21:03:06,912 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-21 21:03:06,943 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-21 21:03:06,945 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-21 21:03:06,946 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-21 21:03:06,947 INFO L274 PluginConnector]: CDTParser initialized [2023-11-21 21:03:06,948 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/../../sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2023-11-21 21:03:09,942 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-21 21:03:10,406 INFO L384 CDTParser]: Found 1 translation units. [2023-11-21 21:03:10,407 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c [2023-11-21 21:03:10,442 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/data/29b9d31b5/20e7c1f19a8d463f98c61607f098a4b8/FLAGfa5748567 [2023-11-21 21:03:10,464 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/data/29b9d31b5/20e7c1f19a8d463f98c61607f098a4b8 [2023-11-21 21:03:10,470 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-21 21:03:10,473 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-21 21:03:10,477 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:10,477 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-21 21:03:10,483 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-21 21:03:10,484 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:10" (1/1) ... [2023-11-21 21:03:10,486 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@681c957f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:10, skipping insertion in model container [2023-11-21 21:03:10,486 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.11 09:03:10" (1/1) ... [2023-11-21 21:03:10,565 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-21 21:03:11,091 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_d37e2418-2445-4d00-8e03-065c8de3aa1c/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2023-11-21 21:03:11,224 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:11,243 INFO L202 MainTranslator]: Completed pre-run [2023-11-21 21:03:11,256 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [48] [2023-11-21 21:03:11,257 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [414] [2023-11-21 21:03:11,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification9_spec.i","") [428] [2023-11-21 21:03:11,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [594] [2023-11-21 21:03:11,258 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [2119] [2023-11-21 21:03:11,259 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2128] [2023-11-21 21:03:11,260 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [2790] [2023-11-21 21:03:11,261 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3145] [2023-11-21 21:03:11,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [3236] [2023-11-21 21:03:11,262 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [3271] [2023-11-21 21:03:11,386 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_d37e2418-2445-4d00-8e03-065c8de3aa1c/sv-benchmarks/c/product-lines/elevator_spec9_product26.cil.c[46529,46542] [2023-11-21 21:03:11,414 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-21 21:03:11,449 INFO L206 MainTranslator]: Completed translation [2023-11-21 21:03:11,449 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11 WrapperNode [2023-11-21 21:03:11,450 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-21 21:03:11,451 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:11,451 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-21 21:03:11,451 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-21 21:03:11,460 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,493 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,563 INFO L138 Inliner]: procedures = 93, calls = 337, calls flagged for inlining = 27, calls inlined = 23, statements flattened = 813 [2023-11-21 21:03:11,564 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-21 21:03:11,565 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-21 21:03:11,565 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-21 21:03:11,565 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-21 21:03:11,583 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,583 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,590 INFO L184 PluginConnector]: Executing the observer HeapSplitter from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,641 INFO L187 HeapSplitter]: 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] [2023-11-21 21:03:11,654 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,654 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,710 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,726 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,755 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,761 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,773 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-21 21:03:11,774 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-21 21:03:11,774 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-21 21:03:11,774 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-21 21:03:11,775 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (1/1) ... [2023-11-21 21:03:11,781 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-21 21:03:11,797 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/z3 [2023-11-21 21:03:11,810 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-21 21:03:11,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_d37e2418-2445-4d00-8e03-065c8de3aa1c/bin/uautomizer-verify-bycVGegfSx/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-21 21:03:11,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-21 21:03:11,866 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-21 21:03:11,866 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-21 21:03:11,867 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-21 21:03:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-21 21:03:11,867 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-21 21:03:11,867 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-21 21:03:11,867 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-21 21:03:11,868 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-21 21:03:11,869 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-21 21:03:11,869 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-21 21:03:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-21 21:03:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-21 21:03:11,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-21 21:03:11,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-21 21:03:11,871 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-21 21:03:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-21 21:03:11,872 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-21 21:03:11,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-21 21:03:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-21 21:03:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-21 21:03:11,875 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-21 21:03:11,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-21 21:03:11,876 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-21 21:03:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-21 21:03:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-21 21:03:11,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-21 21:03:11,877 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-21 21:03:11,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-21 21:03:11,878 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__empty [2023-11-21 21:03:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__empty [2023-11-21 21:03:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-21 21:03:11,879 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-21 21:03:11,879 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-21 21:03:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-21 21:03:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-21 21:03:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-21 21:03:11,880 INFO L130 BoogieDeclarations]: Found specification of procedure isEmpty [2023-11-21 21:03:11,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isEmpty [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#4 [2023-11-21 21:03:11,881 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#5 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#6 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#7 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#8 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#9 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#10 [2023-11-21 21:03:11,882 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#11 [2023-11-21 21:03:11,883 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#12 [2023-11-21 21:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#13 [2023-11-21 21:03:11,884 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#14 [2023-11-21 21:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#15 [2023-11-21 21:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#16 [2023-11-21 21:03:11,885 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#17 [2023-11-21 21:03:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#18 [2023-11-21 21:03:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#19 [2023-11-21 21:03:11,886 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-21 21:03:11,886 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-21 21:03:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-21 21:03:11,887 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-21 21:03:11,887 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-21 21:03:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-21 21:03:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-21 21:03:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-21 21:03:11,888 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-21 21:03:11,888 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-21 21:03:12,135 INFO L240 CfgBuilder]: Building ICFG [2023-11-21 21:03:12,138 INFO L266 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-21 21:03:13,520 INFO L281 CfgBuilder]: Performing block encoding [2023-11-21 21:03:14,837 INFO L303 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-21 21:03:14,837 INFO L308 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-21 21:03:14,840 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:14 BoogieIcfgContainer [2023-11-21 21:03:14,840 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-21 21:03:14,844 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-21 21:03:14,844 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-21 21:03:14,848 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-21 21:03:14,848 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.11 09:03:10" (1/3) ... [2023-11-21 21:03:14,849 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0fe921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:14, skipping insertion in model container [2023-11-21 21:03:14,849 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.11 09:03:11" (2/3) ... [2023-11-21 21:03:14,851 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1b0fe921 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.11 09:03:14, skipping insertion in model container [2023-11-21 21:03:14,851 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.11 09:03:14" (3/3) ... [2023-11-21 21:03:14,853 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec9_product26.cil.c [2023-11-21 21:03:14,875 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-21 21:03:14,875 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-21 21:03:14,957 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-21 21:03:14,965 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;@135c46eb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-21 21:03:14,965 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-21 21:03:14,972 INFO L276 IsEmpty]: Start isEmpty. Operand has 351 states, 237 states have (on average 1.6118143459915613) internal successors, (382), 260 states have internal predecessors, (382), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) [2023-11-21 21:03:14,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-11-21 21:03:14,991 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:14,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:14,993 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:14,998 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:14,999 INFO L85 PathProgramCache]: Analyzing trace with hash -915793724, now seen corresponding path program 1 times [2023-11-21 21:03:15,009 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:15,010 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [167690200] [2023-11-21 21:03:15,010 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:15,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:15,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:15,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:15,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:15,746 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:15,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:15,810 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:15,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:16,381 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:16,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:16,443 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:16,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:16,476 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:16,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:16,483 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:03:16,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:16,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:16,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:16,495 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [167690200] [2023-11-21 21:03:16,496 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [167690200] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:16,496 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:16,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-21 21:03:16,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197158620] [2023-11-21 21:03:16,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:16,506 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-21 21:03:16,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:16,559 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-21 21:03:16,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:16,566 INFO L87 Difference]: Start difference. First operand has 351 states, 237 states have (on average 1.6118143459915613) internal successors, (382), 260 states have internal predecessors, (382), 89 states have call successors, (89), 23 states have call predecessors, (89), 23 states have return successors, (89), 82 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:03:19,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:19,875 INFO L93 Difference]: Finished difference Result 440 states and 708 transitions. [2023-11-21 21:03:19,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-21 21:03:19,878 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) Word has length 39 [2023-11-21 21:03:19,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:19,898 INFO L225 Difference]: With dead ends: 440 [2023-11-21 21:03:19,898 INFO L226 Difference]: Without dead ends: 418 [2023-11-21 21:03:19,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-11-21 21:03:19,906 INFO L413 NwaCegarLoop]: 234 mSDtfsCounter, 587 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 518 mSolverCounterSat, 215 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 638 SdHoareTripleChecker+Valid, 357 SdHoareTripleChecker+Invalid, 733 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 215 IncrementalHoareTripleChecker+Valid, 518 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:19,907 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [638 Valid, 357 Invalid, 733 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [215 Valid, 518 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2023-11-21 21:03:19,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 418 states. [2023-11-21 21:03:20,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 418 to 347. [2023-11-21 21:03:20,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 347 states, 235 states have (on average 1.6) internal successors, (376), 256 states have internal predecessors, (376), 89 states have call successors, (89), 23 states have call predecessors, (89), 22 states have return successors, (84), 81 states have call predecessors, (84), 84 states have call successors, (84) [2023-11-21 21:03:20,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 347 states to 347 states and 549 transitions. [2023-11-21 21:03:20,082 INFO L78 Accepts]: Start accepts. Automaton has 347 states and 549 transitions. Word has length 39 [2023-11-21 21:03:20,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:20,083 INFO L495 AbstractCegarLoop]: Abstraction has 347 states and 549 transitions. [2023-11-21 21:03:20,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 6.0) internal successors, (24), 2 states have internal predecessors, (24), 2 states have call successors, (8), 4 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 1 states have call successors, (7) [2023-11-21 21:03:20,084 INFO L276 IsEmpty]: Start isEmpty. Operand 347 states and 549 transitions. [2023-11-21 21:03:20,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2023-11-21 21:03:20,089 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:20,089 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:20,090 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-21 21:03:20,090 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:20,091 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:20,091 INFO L85 PathProgramCache]: Analyzing trace with hash 1832338948, now seen corresponding path program 1 times [2023-11-21 21:03:20,091 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:20,091 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [639968070] [2023-11-21 21:03:20,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:20,092 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:20,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:20,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:20,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:20,796 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:20,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:20,813 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:20,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:21,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:21,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:21,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:21,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:21,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:21,586 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2023-11-21 21:03:21,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:21,594 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:21,594 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:21,595 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [639968070] [2023-11-21 21:03:21,595 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [639968070] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:21,595 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:21,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:21,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920622252] [2023-11-21 21:03:21,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:21,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:21,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:21,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:21,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:21,604 INFO L87 Difference]: Start difference. First operand 347 states and 549 transitions. Second operand has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:03:28,956 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:28,956 INFO L93 Difference]: Finished difference Result 1214 states and 1969 transitions. [2023-11-21 21:03:28,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-21 21:03:28,958 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) Word has length 40 [2023-11-21 21:03:28,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:28,974 INFO L225 Difference]: With dead ends: 1214 [2023-11-21 21:03:28,974 INFO L226 Difference]: Without dead ends: 883 [2023-11-21 21:03:28,985 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2023-11-21 21:03:28,987 INFO L413 NwaCegarLoop]: 240 mSDtfsCounter, 1532 mSDsluCounter, 679 mSDsCounter, 0 mSdLazyCounter, 1584 mSolverCounterSat, 527 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1577 SdHoareTripleChecker+Valid, 919 SdHoareTripleChecker+Invalid, 2111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 527 IncrementalHoareTripleChecker+Valid, 1584 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.3s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:28,988 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1577 Valid, 919 Invalid, 2111 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [527 Valid, 1584 Invalid, 0 Unknown, 0 Unchecked, 5.3s Time] [2023-11-21 21:03:28,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 883 states. [2023-11-21 21:03:29,333 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 883 to 695. [2023-11-21 21:03:29,335 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 695 states, 491 states have (on average 1.6191446028513239) internal successors, (795), 521 states have internal predecessors, (795), 163 states have call successors, (163), 39 states have call predecessors, (163), 40 states have return successors, (165), 147 states have call predecessors, (165), 158 states have call successors, (165) [2023-11-21 21:03:29,345 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 1123 transitions. [2023-11-21 21:03:29,346 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 1123 transitions. Word has length 40 [2023-11-21 21:03:29,346 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:29,346 INFO L495 AbstractCegarLoop]: Abstraction has 695 states and 1123 transitions. [2023-11-21 21:03:29,346 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 3.125) internal successors, (25), 6 states have internal predecessors, (25), 5 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2023-11-21 21:03:29,347 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 1123 transitions. [2023-11-21 21:03:29,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2023-11-21 21:03:29,355 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:29,355 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:29,355 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-21 21:03:29,355 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:29,356 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:29,356 INFO L85 PathProgramCache]: Analyzing trace with hash 906541393, now seen corresponding path program 1 times [2023-11-21 21:03:29,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:29,357 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1788774189] [2023-11-21 21:03:29,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:29,357 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:29,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:29,945 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:29,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:29,979 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:29,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:29,984 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:29,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:30,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,474 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:30,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,551 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:30,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,896 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:30,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,953 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,957 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:30,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,988 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2023-11-21 21:03:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,992 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2023-11-21 21:03:30,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:30,997 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:30,997 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:30,998 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1788774189] [2023-11-21 21:03:30,998 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1788774189] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:30,998 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:30,998 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-11-21 21:03:30,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1541158935] [2023-11-21 21:03:30,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:30,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-11-21 21:03:31,000 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:31,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-11-21 21:03:31,001 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2023-11-21 21:03:31,001 INFO L87 Difference]: Start difference. First operand 695 states and 1123 transitions. Second operand has 10 states, 10 states have (on average 3.8) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:38,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:38,598 INFO L93 Difference]: Finished difference Result 1784 states and 2924 transitions. [2023-11-21 21:03:38,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-11-21 21:03:38,599 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) Word has length 61 [2023-11-21 21:03:38,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:38,609 INFO L225 Difference]: With dead ends: 1784 [2023-11-21 21:03:38,609 INFO L226 Difference]: Without dead ends: 1106 [2023-11-21 21:03:38,614 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 3.0s TimeCoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2023-11-21 21:03:38,615 INFO L413 NwaCegarLoop]: 226 mSDtfsCounter, 1245 mSDsluCounter, 1069 mSDsCounter, 0 mSdLazyCounter, 2512 mSolverCounterSat, 659 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1275 SdHoareTripleChecker+Valid, 1295 SdHoareTripleChecker+Invalid, 3171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 659 IncrementalHoareTripleChecker+Valid, 2512 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.0s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:38,616 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1275 Valid, 1295 Invalid, 3171 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [659 Valid, 2512 Invalid, 0 Unknown, 0 Unchecked, 5.0s Time] [2023-11-21 21:03:38,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1106 states. [2023-11-21 21:03:38,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1106 to 867. [2023-11-21 21:03:38,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 617 states have (on average 1.5964343598055106) internal successors, (985), 649 states have internal predecessors, (985), 191 states have call successors, (191), 53 states have call predecessors, (191), 58 states have return successors, (218), 175 states have call predecessors, (218), 186 states have call successors, (218) [2023-11-21 21:03:38,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1394 transitions. [2023-11-21 21:03:38,933 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1394 transitions. Word has length 61 [2023-11-21 21:03:38,933 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:38,933 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1394 transitions. [2023-11-21 21:03:38,934 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.8) internal successors, (38), 5 states have internal predecessors, (38), 3 states have call successors, (12), 6 states have call predecessors, (12), 3 states have return successors, (11), 4 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:38,934 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1394 transitions. [2023-11-21 21:03:38,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-11-21 21:03:38,939 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:38,939 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:38,965 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-21 21:03:38,965 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:38,966 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:38,966 INFO L85 PathProgramCache]: Analyzing trace with hash -257064630, now seen corresponding path program 1 times [2023-11-21 21:03:38,966 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:38,966 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547621448] [2023-11-21 21:03:38,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:38,967 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:39,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:39,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,441 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:39,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,446 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:39,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,788 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:39,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,817 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:39,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:39,851 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:39,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2023-11-21 21:03:40,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,198 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:40,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,202 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:40,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,224 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 18 [2023-11-21 21:03:40,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,228 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2023-11-21 21:03:40,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:40,233 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:40,233 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:40,234 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547621448] [2023-11-21 21:03:40,234 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547621448] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:40,234 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:40,234 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:40,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889556540] [2023-11-21 21:03:40,235 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:40,235 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:40,235 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:40,236 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:40,236 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:40,236 INFO L87 Difference]: Start difference. First operand 867 states and 1394 transitions. Second operand has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:48,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-21 21:03:48,740 INFO L93 Difference]: Finished difference Result 2575 states and 4189 transitions. [2023-11-21 21:03:48,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-11-21 21:03:48,740 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) Word has length 66 [2023-11-21 21:03:48,743 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-21 21:03:48,760 INFO L225 Difference]: With dead ends: 2575 [2023-11-21 21:03:48,761 INFO L226 Difference]: Without dead ends: 1726 [2023-11-21 21:03:48,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=123, Invalid=257, Unknown=0, NotChecked=0, Total=380 [2023-11-21 21:03:48,779 INFO L413 NwaCegarLoop]: 281 mSDtfsCounter, 2835 mSDsluCounter, 550 mSDsCounter, 0 mSdLazyCounter, 1464 mSolverCounterSat, 1462 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2888 SdHoareTripleChecker+Valid, 831 SdHoareTripleChecker+Invalid, 2926 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1462 IncrementalHoareTripleChecker+Valid, 1464 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.1s IncrementalHoareTripleChecker+Time [2023-11-21 21:03:48,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2888 Valid, 831 Invalid, 2926 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1462 Valid, 1464 Invalid, 0 Unknown, 0 Unchecked, 5.1s Time] [2023-11-21 21:03:48,787 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1726 states. [2023-11-21 21:03:49,384 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1726 to 1607. [2023-11-21 21:03:49,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1607 states, 1150 states have (on average 1.551304347826087) internal successors, (1784), 1209 states have internal predecessors, (1784), 348 states have call successors, (348), 99 states have call predecessors, (348), 108 states have return successors, (401), 320 states have call predecessors, (401), 343 states have call successors, (401) [2023-11-21 21:03:49,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1607 states to 1607 states and 2533 transitions. [2023-11-21 21:03:49,405 INFO L78 Accepts]: Start accepts. Automaton has 1607 states and 2533 transitions. Word has length 66 [2023-11-21 21:03:49,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-21 21:03:49,405 INFO L495 AbstractCegarLoop]: Abstraction has 1607 states and 2533 transitions. [2023-11-21 21:03:49,406 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.375) internal successors, (43), 4 states have internal predecessors, (43), 3 states have call successors, (12), 6 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 3 states have call successors, (11) [2023-11-21 21:03:49,406 INFO L276 IsEmpty]: Start isEmpty. Operand 1607 states and 2533 transitions. [2023-11-21 21:03:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-21 21:03:49,409 INFO L187 NwaCegarLoop]: Found error trace [2023-11-21 21:03:49,409 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-21 21:03:49,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-21 21:03:49,410 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-21 21:03:49,410 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-21 21:03:49,410 INFO L85 PathProgramCache]: Analyzing trace with hash -1374143160, now seen corresponding path program 1 times [2023-11-21 21:03:49,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-11-21 21:03:49,411 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [161513786] [2023-11-21 21:03:49,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-21 21:03:49,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-21 21:03:49,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:49,887 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:49,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:49,919 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:49,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:49,923 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2023-11-21 21:03:49,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,328 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2023-11-21 21:03:50,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:50,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,444 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:50,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,829 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:50,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,864 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2023-11-21 21:03:50,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,870 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2023-11-21 21:03:50,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,890 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-11-21 21:03:50,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,903 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2023-11-21 21:03:50,906 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,908 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2023-11-21 21:03:50,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-21 21:03:50,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-21 21:03:50,915 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-11-21 21:03:50,915 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [161513786] [2023-11-21 21:03:50,916 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [161513786] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-21 21:03:50,916 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-21 21:03:50,916 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-21 21:03:50,916 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728364522] [2023-11-21 21:03:50,916 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-21 21:03:50,918 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-21 21:03:50,918 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-11-21 21:03:50,919 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-21 21:03:50,919 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2023-11-21 21:03:50,920 INFO L87 Difference]: Start difference. First operand 1607 states and 2533 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (13), 6 states have call predecessors, (13), 2 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12)