./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 30e01a73 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_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire --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 Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec --- Real Ultimate output --- This is Ultimate 0.2.3-dev-30e01a7 [2023-11-23 21:13:26,807 INFO L188 SettingsManager]: Resetting all preferences to default values... [2023-11-23 21:13:26,882 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/config/svcomp-Reach-32bit-Taipan_Default.epf [2023-11-23 21:13:26,887 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2023-11-23 21:13:26,888 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2023-11-23 21:13:26,916 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2023-11-23 21:13:26,917 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-11-23 21:13:26,918 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-11-23 21:13:26,919 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-11-23 21:13:26,924 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-11-23 21:13:26,925 INFO L153 SettingsManager]: * User list type=DISABLED [2023-11-23 21:13:26,925 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2023-11-23 21:13:26,926 INFO L153 SettingsManager]: * Explicit value domain=true [2023-11-23 21:13:26,927 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2023-11-23 21:13:26,928 INFO L153 SettingsManager]: * Octagon Domain=false [2023-11-23 21:13:26,928 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2023-11-23 21:13:26,929 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2023-11-23 21:13:26,929 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2023-11-23 21:13:26,930 INFO L153 SettingsManager]: * Interval Domain=false [2023-11-23 21:13:26,930 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2023-11-23 21:13:26,931 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2023-11-23 21:13:26,931 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2023-11-23 21:13:26,932 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-11-23 21:13:26,933 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2023-11-23 21:13:26,933 INFO L153 SettingsManager]: * sizeof long=4 [2023-11-23 21:13:26,934 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2023-11-23 21:13:26,934 INFO L153 SettingsManager]: * sizeof POINTER=4 [2023-11-23 21:13:26,935 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2023-11-23 21:13:26,935 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2023-11-23 21:13:26,936 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-11-23 21:13:26,937 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2023-11-23 21:13:26,937 INFO L153 SettingsManager]: * sizeof long double=12 [2023-11-23 21:13:26,937 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2023-11-23 21:13:26,938 INFO L153 SettingsManager]: * Use constant arrays=true [2023-11-23 21:13:26,938 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-11-23 21:13:26,938 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2023-11-23 21:13:26,939 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2023-11-23 21:13:26,939 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:26,939 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-11-23 21:13:26,940 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-11-23 21:13:26,940 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2023-11-23 21:13:26,941 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2023-11-23 21:13:26,941 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-11-23 21:13:26,941 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2023-11-23 21:13:26,942 INFO L153 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2023-11-23 21:13:26,942 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2023-11-23 21:13:26,942 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-11-23 21:13:26,943 INFO L153 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68493680033c9035e39b01d00eb3730662e9195bee3c7e3d4b2805e2b52b60ec [2023-11-23 21:13:27,252 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-11-23 21:13:27,308 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-11-23 21:13:27,311 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-11-23 21:13:27,313 INFO L270 PluginConnector]: Initializing CDTParser... [2023-11-23 21:13:27,314 INFO L274 PluginConnector]: CDTParser initialized [2023-11-23 21:13:27,315 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/../../sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2023-11-23 21:13:30,758 INFO L533 CDTParser]: Created temporary CDT project at NULL [2023-11-23 21:13:31,313 INFO L384 CDTParser]: Found 1 translation units. [2023-11-23 21:13:31,315 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c [2023-11-23 21:13:31,345 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/data/5971d7f37/fed3ccbe34de4a5b8d42536b7d3f00bd/FLAG9a9bf98ce [2023-11-23 21:13:31,368 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/data/5971d7f37/fed3ccbe34de4a5b8d42536b7d3f00bd [2023-11-23 21:13:31,375 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-11-23 21:13:31,378 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2023-11-23 21:13:31,383 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:31,383 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-11-23 21:13:31,389 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2023-11-23 21:13:31,390 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:31" (1/1) ... [2023-11-23 21:13:31,391 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3a7121c3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:31, skipping insertion in model container [2023-11-23 21:13:31,391 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.11 09:13:31" (1/1) ... [2023-11-23 21:13:31,495 INFO L177 MainTranslator]: Built tables and reachable declarations [2023-11-23 21:13:32,107 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_70d9305b-99b7-4172-b835-65ad8d8eba34/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2023-11-23 21:13:32,134 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:32,150 INFO L202 MainTranslator]: Completed pre-run [2023-11-23 21:13:32,161 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [48] [2023-11-23 21:13:32,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [86] [2023-11-23 21:13:32,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification2_spec.i","") [100] [2023-11-23 21:13:32,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [286] [2023-11-23 21:13:32,163 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [1765] [2023-11-23 21:13:32,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [1884] [2023-11-23 21:13:32,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [2546] [2023-11-23 21:13:32,164 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2638] [2023-11-23 21:13:32,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [3004] [2023-11-23 21:13:32,165 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [3013] [2023-11-23 21:13:32,338 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_70d9305b-99b7-4172-b835-65ad8d8eba34/sv-benchmarks/c/product-lines/elevator_spec2_product25.cil.c[66231,66244] [2023-11-23 21:13:32,356 INFO L209 PostProcessor]: Analyzing one entry point: main [2023-11-23 21:13:32,428 INFO L206 MainTranslator]: Completed translation [2023-11-23 21:13:32,429 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32 WrapperNode [2023-11-23 21:13:32,429 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-11-23 21:13:32,431 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:32,431 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-11-23 21:13:32,431 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2023-11-23 21:13:32,441 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,479 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,545 INFO L138 Inliner]: procedures = 91, calls = 334, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 845 [2023-11-23 21:13:32,545 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-11-23 21:13:32,546 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-11-23 21:13:32,547 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2023-11-23 21:13:32,547 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2023-11-23 21:13:32,560 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,560 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,568 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,568 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,599 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,630 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,638 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,645 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,656 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-11-23 21:13:32,658 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-11-23 21:13:32,658 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2023-11-23 21:13:32,658 INFO L274 PluginConnector]: RCFGBuilder initialized [2023-11-23 21:13:32,659 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (1/1) ... [2023-11-23 21:13:32,667 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-11-23 21:13:32,686 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/z3 [2023-11-23 21:13:32,703 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-11-23 21:13:32,757 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70d9305b-99b7-4172-b835-65ad8d8eba34/bin/utaipan-verify-mE87zJ7Ire/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-11-23 21:13:32,784 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-11-23 21:13:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2023-11-23 21:13:32,785 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2023-11-23 21:13:32,785 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2023-11-23 21:13:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2023-11-23 21:13:32,786 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2023-11-23 21:13:32,786 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2023-11-23 21:13:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2023-11-23 21:13:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2023-11-23 21:13:32,787 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2023-11-23 21:13:32,787 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2023-11-23 21:13:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2023-11-23 21:13:32,788 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2023-11-23 21:13:32,788 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2023-11-23 21:13:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2023-11-23 21:13:32,789 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2023-11-23 21:13:32,789 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2023-11-23 21:13:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2023-11-23 21:13:32,790 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2023-11-23 21:13:32,790 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2023-11-23 21:13:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2023-11-23 21:13:32,791 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2023-11-23 21:13:32,791 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2023-11-23 21:13:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2023-11-23 21:13:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2023-11-23 21:13:32,792 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2023-11-23 21:13:32,792 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2023-11-23 21:13:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2023-11-23 21:13:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2023-11-23 21:13:32,793 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2023-11-23 21:13:32,793 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2023-11-23 21:13:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2023-11-23 21:13:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2023-11-23 21:13:32,794 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2023-11-23 21:13:32,794 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2023-11-23 21:13:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-11-23 21:13:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2023-11-23 21:13:32,795 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2023-11-23 21:13:32,795 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2023-11-23 21:13:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2023-11-23 21:13:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2023-11-23 21:13:32,796 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2023-11-23 21:13:32,796 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-11-23 21:13:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-11-23 21:13:32,797 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2023-11-23 21:13:32,797 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2023-11-23 21:13:33,034 INFO L241 CfgBuilder]: Building ICFG [2023-11-23 21:13:33,038 INFO L267 CfgBuilder]: Building CFG for each procedure with an implementation [2023-11-23 21:13:34,485 INFO L282 CfgBuilder]: Performing block encoding [2023-11-23 21:13:35,775 INFO L304 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-11-23 21:13:35,775 INFO L309 CfgBuilder]: Removed 1 assume(true) statements. [2023-11-23 21:13:35,778 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:35 BoogieIcfgContainer [2023-11-23 21:13:35,778 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-11-23 21:13:35,781 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-11-23 21:13:35,781 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2023-11-23 21:13:35,785 INFO L274 PluginConnector]: TraceAbstraction initialized [2023-11-23 21:13:35,785 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.11 09:13:31" (1/3) ... [2023-11-23 21:13:35,787 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36414623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:35, skipping insertion in model container [2023-11-23 21:13:35,787 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.11 09:13:32" (2/3) ... [2023-11-23 21:13:35,788 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36414623 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.11 09:13:35, skipping insertion in model container [2023-11-23 21:13:35,788 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.11 09:13:35" (3/3) ... [2023-11-23 21:13:35,790 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product25.cil.c [2023-11-23 21:13:35,811 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-11-23 21:13:35,812 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2023-11-23 21:13:35,884 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-11-23 21:13:35,891 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=FINITE_AUTOMATA, 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;@7f28f1bb, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2023-11-23 21:13:35,891 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2023-11-23 21:13:35,898 INFO L276 IsEmpty]: Start isEmpty. Operand has 347 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) [2023-11-23 21:13:35,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2023-11-23 21:13:35,920 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:35,920 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] [2023-11-23 21:13:35,921 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:35,926 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:35,927 INFO L85 PathProgramCache]: Analyzing trace with hash -1212474579, now seen corresponding path program 1 times [2023-11-23 21:13:35,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:35,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098486460] [2023-11-23 21:13:35,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:35,939 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:36,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:36,519 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:13:36,520 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:36,521 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098486460] [2023-11-23 21:13:36,521 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098486460] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:36,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:36,522 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-11-23 21:13:36,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [45531009] [2023-11-23 21:13:36,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:36,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-11-23 21:13:36,532 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:36,583 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-11-23 21:13:36,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:13:36,590 INFO L87 Difference]: Start difference. First operand has 347 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 88 states have call successors, (88), 21 states have call predecessors, (88), 21 states have return successors, (88), 82 states have call predecessors, (88), 88 states have call successors, (88) Second operand has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:13:36,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:36,826 INFO L93 Difference]: Finished difference Result 365 states and 586 transitions. [2023-11-23 21:13:36,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-11-23 21:13:36,829 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) Word has length 51 [2023-11-23 21:13:36,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:36,855 INFO L225 Difference]: With dead ends: 365 [2023-11-23 21:13:36,856 INFO L226 Difference]: Without dead ends: 343 [2023-11-23 21:13:36,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-11-23 21:13:36,864 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 517 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:36,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 517 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-11-23 21:13:36,894 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2023-11-23 21:13:36,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 343. [2023-11-23 21:13:36,974 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 343 states, 234 states have (on average 1.6111111111111112) internal successors, (377), 253 states have internal predecessors, (377), 88 states have call successors, (88), 21 states have call predecessors, (88), 20 states have return successors, (83), 81 states have call predecessors, (83), 83 states have call successors, (83) [2023-11-23 21:13:36,987 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 548 transitions. [2023-11-23 21:13:36,989 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 548 transitions. Word has length 51 [2023-11-23 21:13:36,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:36,992 INFO L495 AbstractCegarLoop]: Abstraction has 343 states and 548 transitions. [2023-11-23 21:13:36,993 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 17.0) internal successors, (34), 2 states have internal predecessors, (34), 2 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (8), 2 states have call predecessors, (8), 1 states have call successors, (8) [2023-11-23 21:13:36,993 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 548 transitions. [2023-11-23 21:13:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2023-11-23 21:13:37,005 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:37,005 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] [2023-11-23 21:13:37,005 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-11-23 21:13:37,006 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:37,006 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:37,007 INFO L85 PathProgramCache]: Analyzing trace with hash -949510519, now seen corresponding path program 1 times [2023-11-23 21:13:37,007 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:37,007 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [890026210] [2023-11-23 21:13:37,008 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:37,008 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:37,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:37,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:13:37,639 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:37,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [890026210] [2023-11-23 21:13:37,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [890026210] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:37,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:37,641 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:13:37,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [412253514] [2023-11-23 21:13:37,641 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:37,643 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:13:37,644 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:37,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:13:37,646 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:13:37,646 INFO L87 Difference]: Start difference. First operand 343 states and 548 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:13:40,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:40,877 INFO L93 Difference]: Finished difference Result 1160 states and 1889 transitions. [2023-11-23 21:13:40,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-11-23 21:13:40,878 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) Word has length 52 [2023-11-23 21:13:40,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:40,886 INFO L225 Difference]: With dead ends: 1160 [2023-11-23 21:13:40,886 INFO L226 Difference]: Without dead ends: 833 [2023-11-23 21:13:40,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2023-11-23 21:13:40,893 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 1625 mSDsluCounter, 1257 mSDsCounter, 0 mSdLazyCounter, 2233 mSolverCounterSat, 477 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1688 SdHoareTripleChecker+Valid, 1629 SdHoareTripleChecker+Invalid, 2710 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 477 IncrementalHoareTripleChecker+Valid, 2233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:40,893 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1688 Valid, 1629 Invalid, 2710 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [477 Valid, 2233 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 21:13:40,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 833 states. [2023-11-23 21:13:40,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 833 to 784. [2023-11-23 21:13:40,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 784 states, 555 states have (on average 1.6396396396396395) internal successors, (910), 590 states have internal predecessors, (910), 185 states have call successors, (185), 41 states have call predecessors, (185), 43 states have return successors, (186), 177 states have call predecessors, (186), 180 states have call successors, (186) [2023-11-23 21:13:40,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 784 states to 784 states and 1281 transitions. [2023-11-23 21:13:40,980 INFO L78 Accepts]: Start accepts. Automaton has 784 states and 1281 transitions. Word has length 52 [2023-11-23 21:13:40,981 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:40,981 INFO L495 AbstractCegarLoop]: Abstraction has 784 states and 1281 transitions. [2023-11-23 21:13:40,981 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 5 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (8), 5 states have call predecessors, (8), 4 states have call successors, (8) [2023-11-23 21:13:40,982 INFO L276 IsEmpty]: Start isEmpty. Operand 784 states and 1281 transitions. [2023-11-23 21:13:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2023-11-23 21:13:40,985 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:40,986 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] [2023-11-23 21:13:40,986 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-11-23 21:13:40,986 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:40,987 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:40,987 INFO L85 PathProgramCache]: Analyzing trace with hash 1054847902, now seen corresponding path program 1 times [2023-11-23 21:13:40,987 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:40,987 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [93445080] [2023-11-23 21:13:40,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:40,988 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:41,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:41,336 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:13:41,336 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:41,336 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [93445080] [2023-11-23 21:13:41,337 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [93445080] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:41,337 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:41,337 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-11-23 21:13:41,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161839721] [2023-11-23 21:13:41,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:41,338 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-11-23 21:13:41,338 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:41,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-11-23 21:13:41,340 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:41,340 INFO L87 Difference]: Start difference. First operand 784 states and 1281 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:13:41,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:41,590 INFO L93 Difference]: Finished difference Result 1320 states and 2163 transitions. [2023-11-23 21:13:41,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:13:41,591 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) Word has length 56 [2023-11-23 21:13:41,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:41,599 INFO L225 Difference]: With dead ends: 1320 [2023-11-23 21:13:41,599 INFO L226 Difference]: Without dead ends: 854 [2023-11-23 21:13:41,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:41,604 INFO L413 NwaCegarLoop]: 557 mSDtfsCounter, 41 mSDsluCounter, 1602 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2159 SdHoareTripleChecker+Invalid, 170 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:41,604 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2159 Invalid, 170 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:41,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 854 states. [2023-11-23 21:13:41,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 854 to 796. [2023-11-23 21:13:41,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 796 states, 564 states have (on average 1.6294326241134751) internal successors, (919), 599 states have internal predecessors, (919), 185 states have call successors, (185), 41 states have call predecessors, (185), 46 states have return successors, (192), 180 states have call predecessors, (192), 180 states have call successors, (192) [2023-11-23 21:13:41,672 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 796 states to 796 states and 1296 transitions. [2023-11-23 21:13:41,672 INFO L78 Accepts]: Start accepts. Automaton has 796 states and 1296 transitions. Word has length 56 [2023-11-23 21:13:41,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:41,673 INFO L495 AbstractCegarLoop]: Abstraction has 796 states and 1296 transitions. [2023-11-23 21:13:41,673 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 4 states have internal predecessors, (37), 2 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 2 states have call successors, (9) [2023-11-23 21:13:41,673 INFO L276 IsEmpty]: Start isEmpty. Operand 796 states and 1296 transitions. [2023-11-23 21:13:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2023-11-23 21:13:41,676 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:41,677 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] [2023-11-23 21:13:41,677 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-11-23 21:13:41,677 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:41,678 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:41,678 INFO L85 PathProgramCache]: Analyzing trace with hash 2065427974, now seen corresponding path program 1 times [2023-11-23 21:13:41,678 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:41,678 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1553398419] [2023-11-23 21:13:41,679 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:41,679 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:41,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:42,064 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:13:42,065 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:42,065 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1553398419] [2023-11-23 21:13:42,065 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1553398419] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:42,066 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:42,066 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2023-11-23 21:13:42,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292797975] [2023-11-23 21:13:42,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:42,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-11-23 21:13:42,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:42,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-11-23 21:13:42,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:13:42,068 INFO L87 Difference]: Start difference. First operand 796 states and 1296 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:13:45,198 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:45,199 INFO L93 Difference]: Finished difference Result 1815 states and 2949 transitions. [2023-11-23 21:13:45,199 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:13:45,200 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) Word has length 60 [2023-11-23 21:13:45,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:45,213 INFO L225 Difference]: With dead ends: 1815 [2023-11-23 21:13:45,213 INFO L226 Difference]: Without dead ends: 1241 [2023-11-23 21:13:45,218 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:13:45,230 INFO L413 NwaCegarLoop]: 474 mSDtfsCounter, 1817 mSDsluCounter, 849 mSDsCounter, 0 mSdLazyCounter, 2160 mSolverCounterSat, 735 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1964 SdHoareTripleChecker+Valid, 1323 SdHoareTripleChecker+Invalid, 2895 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 735 IncrementalHoareTripleChecker+Valid, 2160 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:45,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1964 Valid, 1323 Invalid, 2895 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [735 Valid, 2160 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2023-11-23 21:13:45,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1241 states. [2023-11-23 21:13:45,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1241 to 1147. [2023-11-23 21:13:45,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 800 states have (on average 1.58375) internal successors, (1267), 852 states have internal predecessors, (1267), 273 states have call successors, (273), 65 states have call predecessors, (273), 73 states have return successors, (289), 266 states have call predecessors, (289), 268 states have call successors, (289) [2023-11-23 21:13:45,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1829 transitions. [2023-11-23 21:13:45,358 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1829 transitions. Word has length 60 [2023-11-23 21:13:45,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:45,360 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1829 transitions. [2023-11-23 21:13:45,360 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 6 states have call successors, (10), 4 states have call predecessors, (10), 3 states have return successors, (9), 6 states have call predecessors, (9), 5 states have call successors, (9) [2023-11-23 21:13:45,360 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1829 transitions. [2023-11-23 21:13:45,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2023-11-23 21:13:45,365 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:45,366 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] [2023-11-23 21:13:45,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-11-23 21:13:45,366 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:45,367 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:45,367 INFO L85 PathProgramCache]: Analyzing trace with hash -148046946, now seen corresponding path program 1 times [2023-11-23 21:13:45,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:45,368 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [800274072] [2023-11-23 21:13:45,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:45,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:45,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:45,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-11-23 21:13:45,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:45,699 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [800274072] [2023-11-23 21:13:45,700 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [800274072] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:45,700 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:45,700 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:45,700 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1955089972] [2023-11-23 21:13:45,701 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:45,704 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:45,705 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:45,706 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:45,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:45,706 INFO L87 Difference]: Start difference. First operand 1147 states and 1829 transitions. Second operand has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 21:13:45,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:45,971 INFO L93 Difference]: Finished difference Result 2216 states and 3590 transitions. [2023-11-23 21:13:45,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-11-23 21:13:45,972 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 63 [2023-11-23 21:13:45,978 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:45,988 INFO L225 Difference]: With dead ends: 2216 [2023-11-23 21:13:45,988 INFO L226 Difference]: Without dead ends: 1147 [2023-11-23 21:13:45,996 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:46,001 INFO L413 NwaCegarLoop]: 540 mSDtfsCounter, 210 mSDsluCounter, 852 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 220 SdHoareTripleChecker+Valid, 1392 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:46,002 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [220 Valid, 1392 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:46,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1147 states. [2023-11-23 21:13:46,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1147 to 1147. [2023-11-23 21:13:46,084 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1147 states, 800 states have (on average 1.54375) internal successors, (1235), 852 states have internal predecessors, (1235), 273 states have call successors, (273), 65 states have call predecessors, (273), 73 states have return successors, (289), 266 states have call predecessors, (289), 268 states have call successors, (289) [2023-11-23 21:13:46,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1147 states to 1147 states and 1797 transitions. [2023-11-23 21:13:46,098 INFO L78 Accepts]: Start accepts. Automaton has 1147 states and 1797 transitions. Word has length 63 [2023-11-23 21:13:46,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:46,098 INFO L495 AbstractCegarLoop]: Abstraction has 1147 states and 1797 transitions. [2023-11-23 21:13:46,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 11.0) internal successors, (44), 4 states have internal predecessors, (44), 3 states have call successors, (10), 2 states have call predecessors, (10), 3 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2023-11-23 21:13:46,099 INFO L276 IsEmpty]: Start isEmpty. Operand 1147 states and 1797 transitions. [2023-11-23 21:13:46,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-11-23 21:13:46,101 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:46,101 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:46,101 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-11-23 21:13:46,101 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:46,102 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:46,102 INFO L85 PathProgramCache]: Analyzing trace with hash 1524417437, now seen corresponding path program 1 times [2023-11-23 21:13:46,102 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:46,102 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709089201] [2023-11-23 21:13:46,103 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:46,103 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:46,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:46,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-11-23 21:13:46,469 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:46,469 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709089201] [2023-11-23 21:13:46,469 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709089201] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:46,469 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:46,469 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:13:46,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1867727814] [2023-11-23 21:13:46,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:46,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:13:46,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:46,471 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:13:46,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:13:46,472 INFO L87 Difference]: Start difference. First operand 1147 states and 1797 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:13:48,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:48,509 INFO L93 Difference]: Finished difference Result 2203 states and 3468 transitions. [2023-11-23 21:13:48,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-11-23 21:13:48,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) Word has length 65 [2023-11-23 21:13:48,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:48,520 INFO L225 Difference]: With dead ends: 2203 [2023-11-23 21:13:48,520 INFO L226 Difference]: Without dead ends: 1335 [2023-11-23 21:13:48,525 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2023-11-23 21:13:48,525 INFO L413 NwaCegarLoop]: 352 mSDtfsCounter, 916 mSDsluCounter, 1157 mSDsCounter, 0 mSdLazyCounter, 2022 mSolverCounterSat, 366 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 986 SdHoareTripleChecker+Valid, 1509 SdHoareTripleChecker+Invalid, 2388 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 366 IncrementalHoareTripleChecker+Valid, 2022 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:48,526 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [986 Valid, 1509 Invalid, 2388 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [366 Valid, 2022 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2023-11-23 21:13:48,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1335 states. [2023-11-23 21:13:48,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1335 to 1174. [2023-11-23 21:13:48,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1174 states, 818 states have (on average 1.5366748166259168) internal successors, (1257), 874 states have internal predecessors, (1257), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-23 21:13:48,622 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1831 transitions. [2023-11-23 21:13:48,623 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1831 transitions. Word has length 65 [2023-11-23 21:13:48,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:48,623 INFO L495 AbstractCegarLoop]: Abstraction has 1174 states and 1831 transitions. [2023-11-23 21:13:48,624 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 4 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (10), 5 states have call predecessors, (10), 3 states have call successors, (10) [2023-11-23 21:13:48,624 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1831 transitions. [2023-11-23 21:13:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2023-11-23 21:13:48,626 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:48,627 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:48,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-11-23 21:13:48,627 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:48,627 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:48,628 INFO L85 PathProgramCache]: Analyzing trace with hash -1594864941, now seen corresponding path program 1 times [2023-11-23 21:13:48,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:48,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305940566] [2023-11-23 21:13:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:48,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:48,940 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:13:48,940 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:48,940 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305940566] [2023-11-23 21:13:48,941 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305940566] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:48,941 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:48,942 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-11-23 21:13:48,942 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2094080791] [2023-11-23 21:13:48,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:48,943 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-11-23 21:13:48,943 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:48,944 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-11-23 21:13:48,944 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2023-11-23 21:13:48,945 INFO L87 Difference]: Start difference. First operand 1174 states and 1831 transitions. Second operand has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:13:49,670 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:49,670 INFO L93 Difference]: Finished difference Result 1246 states and 1944 transitions. [2023-11-23 21:13:49,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:13:49,671 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) Word has length 69 [2023-11-23 21:13:49,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:49,693 INFO L225 Difference]: With dead ends: 1246 [2023-11-23 21:13:49,694 INFO L226 Difference]: Without dead ends: 1231 [2023-11-23 21:13:49,695 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-11-23 21:13:49,696 INFO L413 NwaCegarLoop]: 496 mSDtfsCounter, 632 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 633 SdHoareTripleChecker+Valid, 1657 SdHoareTripleChecker+Invalid, 516 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:49,697 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [633 Valid, 1657 Invalid, 516 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2023-11-23 21:13:49,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1231 states. [2023-11-23 21:13:49,795 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1231 to 1178. [2023-11-23 21:13:49,798 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 822 states have (on average 1.5340632603406326) internal successors, (1261), 878 states have internal predecessors, (1261), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-23 21:13:49,809 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1835 transitions. [2023-11-23 21:13:49,810 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1835 transitions. Word has length 69 [2023-11-23 21:13:49,811 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:49,811 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1835 transitions. [2023-11-23 21:13:49,812 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.333333333333333) internal successors, (44), 6 states have internal predecessors, (44), 3 states have call successors, (12), 2 states have call predecessors, (12), 2 states have return successors, (11), 3 states have call predecessors, (11), 2 states have call successors, (11) [2023-11-23 21:13:49,812 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1835 transitions. [2023-11-23 21:13:49,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2023-11-23 21:13:49,814 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:49,814 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:49,814 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-11-23 21:13:49,815 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:49,815 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:49,815 INFO L85 PathProgramCache]: Analyzing trace with hash -648753849, now seen corresponding path program 1 times [2023-11-23 21:13:49,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:49,816 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540454996] [2023-11-23 21:13:49,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:49,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:49,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:50,137 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2023-11-23 21:13:50,138 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:50,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540454996] [2023-11-23 21:13:50,142 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540454996] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:50,143 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:50,143 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-11-23 21:13:50,143 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [555019172] [2023-11-23 21:13:50,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:50,144 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-11-23 21:13:50,145 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:50,145 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-11-23 21:13:50,146 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-11-23 21:13:50,148 INFO L87 Difference]: Start difference. First operand 1178 states and 1835 transitions. Second operand has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:13:50,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:50,500 INFO L93 Difference]: Finished difference Result 1197 states and 1859 transitions. [2023-11-23 21:13:50,501 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-11-23 21:13:50,501 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2023-11-23 21:13:50,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:50,510 INFO L225 Difference]: With dead ends: 1197 [2023-11-23 21:13:50,511 INFO L226 Difference]: Without dead ends: 1182 [2023-11-23 21:13:50,512 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-11-23 21:13:50,513 INFO L413 NwaCegarLoop]: 493 mSDtfsCounter, 257 mSDsluCounter, 2191 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 264 SdHoareTripleChecker+Valid, 2684 SdHoareTripleChecker+Invalid, 286 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:50,514 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [264 Valid, 2684 Invalid, 286 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-11-23 21:13:50,516 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1182 states. [2023-11-23 21:13:50,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1182 to 1178. [2023-11-23 21:13:50,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1178 states, 822 states have (on average 1.5304136253041363) internal successors, (1258), 878 states have internal predecessors, (1258), 274 states have call successors, (274), 70 states have call predecessors, (274), 81 states have return successors, (300), 266 states have call predecessors, (300), 269 states have call successors, (300) [2023-11-23 21:13:50,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1178 states to 1178 states and 1832 transitions. [2023-11-23 21:13:50,608 INFO L78 Accepts]: Start accepts. Automaton has 1178 states and 1832 transitions. Word has length 74 [2023-11-23 21:13:50,609 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:50,609 INFO L495 AbstractCegarLoop]: Abstraction has 1178 states and 1832 transitions. [2023-11-23 21:13:50,609 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 4 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 5 states have call predecessors, (12), 3 states have call successors, (12) [2023-11-23 21:13:50,609 INFO L276 IsEmpty]: Start isEmpty. Operand 1178 states and 1832 transitions. [2023-11-23 21:13:50,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2023-11-23 21:13:50,616 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:50,616 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 21:13:50,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-11-23 21:13:50,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:50,617 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:50,617 INFO L85 PathProgramCache]: Analyzing trace with hash 990291659, now seen corresponding path program 1 times [2023-11-23 21:13:50,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:50,617 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1082913399] [2023-11-23 21:13:50,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:50,617 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:50,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:50,848 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:13:50,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:50,848 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1082913399] [2023-11-23 21:13:50,848 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1082913399] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:50,848 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:50,849 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:50,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982933924] [2023-11-23 21:13:50,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:50,850 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:50,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:50,851 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:50,851 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:50,851 INFO L87 Difference]: Start difference. First operand 1178 states and 1832 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:52,392 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:52,392 INFO L93 Difference]: Finished difference Result 3783 states and 5989 transitions. [2023-11-23 21:13:52,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:13:52,393 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 81 [2023-11-23 21:13:52,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:52,416 INFO L225 Difference]: With dead ends: 3783 [2023-11-23 21:13:52,416 INFO L226 Difference]: Without dead ends: 2621 [2023-11-23 21:13:52,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:52,425 INFO L413 NwaCegarLoop]: 283 mSDtfsCounter, 1074 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1140 SdHoareTripleChecker+Valid, 645 SdHoareTripleChecker+Invalid, 1117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 329 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:52,426 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1140 Valid, 645 Invalid, 1117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [329 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:13:52,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2621 states. [2023-11-23 21:13:52,682 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2621 to 2374. [2023-11-23 21:13:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2374 states, 1688 states have (on average 1.5408767772511849) internal successors, (2601), 1799 states have internal predecessors, (2601), 526 states have call successors, (526), 129 states have call predecessors, (526), 159 states have return successors, (603), 498 states have call predecessors, (603), 521 states have call successors, (603) [2023-11-23 21:13:52,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2374 states to 2374 states and 3730 transitions. [2023-11-23 21:13:52,713 INFO L78 Accepts]: Start accepts. Automaton has 2374 states and 3730 transitions. Word has length 81 [2023-11-23 21:13:52,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:52,714 INFO L495 AbstractCegarLoop]: Abstraction has 2374 states and 3730 transitions. [2023-11-23 21:13:52,714 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:52,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2374 states and 3730 transitions. [2023-11-23 21:13:52,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2023-11-23 21:13:52,721 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:52,721 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:13:52,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-11-23 21:13:52,722 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:52,727 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:52,727 INFO L85 PathProgramCache]: Analyzing trace with hash 1803435771, now seen corresponding path program 1 times [2023-11-23 21:13:52,727 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:52,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [75485252] [2023-11-23 21:13:52,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:52,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:52,961 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:13:52,961 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:52,961 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [75485252] [2023-11-23 21:13:52,961 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [75485252] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:52,962 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:52,962 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:52,962 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1175411185] [2023-11-23 21:13:52,962 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:52,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:52,963 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:52,963 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:52,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:52,964 INFO L87 Difference]: Start difference. First operand 2374 states and 3730 transitions. Second operand has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:13:54,770 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:54,770 INFO L93 Difference]: Finished difference Result 7279 states and 11631 transitions. [2023-11-23 21:13:54,770 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:13:54,771 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 85 [2023-11-23 21:13:54,771 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:54,821 INFO L225 Difference]: With dead ends: 7279 [2023-11-23 21:13:54,821 INFO L226 Difference]: Without dead ends: 4924 [2023-11-23 21:13:54,840 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:54,841 INFO L413 NwaCegarLoop]: 296 mSDtfsCounter, 1055 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1118 SdHoareTripleChecker+Valid, 658 SdHoareTripleChecker+Invalid, 1114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:54,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1118 Valid, 658 Invalid, 1114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:13:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4924 states. [2023-11-23 21:13:55,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4924 to 4608. [2023-11-23 21:13:55,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4608 states, 3307 states have (on average 1.5439975808890234) internal successors, (5106), 3540 states have internal predecessors, (5106), 979 states have call successors, (979), 247 states have call predecessors, (979), 321 states have return successors, (1205), 911 states have call predecessors, (1205), 974 states have call successors, (1205) [2023-11-23 21:13:55,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4608 states to 4608 states and 7290 transitions. [2023-11-23 21:13:55,383 INFO L78 Accepts]: Start accepts. Automaton has 4608 states and 7290 transitions. Word has length 85 [2023-11-23 21:13:55,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:55,384 INFO L495 AbstractCegarLoop]: Abstraction has 4608 states and 7290 transitions. [2023-11-23 21:13:55,384 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:13:55,384 INFO L276 IsEmpty]: Start isEmpty. Operand 4608 states and 7290 transitions. [2023-11-23 21:13:55,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2023-11-23 21:13:55,387 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:55,387 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 21:13:55,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-11-23 21:13:55,388 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:55,389 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:55,389 INFO L85 PathProgramCache]: Analyzing trace with hash -1825899251, now seen corresponding path program 1 times [2023-11-23 21:13:55,389 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:55,389 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [660208628] [2023-11-23 21:13:55,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:55,390 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:55,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:55,637 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:13:55,638 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:55,638 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [660208628] [2023-11-23 21:13:55,638 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [660208628] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:55,638 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:55,638 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:55,639 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397212481] [2023-11-23 21:13:55,639 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:55,639 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:55,639 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:55,640 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:55,640 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:55,640 INFO L87 Difference]: Start difference. First operand 4608 states and 7290 transitions. Second operand has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:57,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:13:57,751 INFO L93 Difference]: Finished difference Result 14041 states and 22771 transitions. [2023-11-23 21:13:57,752 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:13:57,752 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 83 [2023-11-23 21:13:57,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:13:57,857 INFO L225 Difference]: With dead ends: 14041 [2023-11-23 21:13:57,857 INFO L226 Difference]: Without dead ends: 9458 [2023-11-23 21:13:57,891 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:13:57,891 INFO L413 NwaCegarLoop]: 309 mSDtfsCounter, 1048 mSDsluCounter, 362 mSDsCounter, 0 mSdLazyCounter, 787 mSolverCounterSat, 326 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1112 SdHoareTripleChecker+Valid, 671 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 326 IncrementalHoareTripleChecker+Valid, 787 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:13:57,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1112 Valid, 671 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [326 Valid, 787 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:13:57,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9458 states. [2023-11-23 21:13:58,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9458 to 8990. [2023-11-23 21:13:58,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8990 states, 6474 states have (on average 1.5410874266295953) internal successors, (9977), 6963 states have internal predecessors, (9977), 1858 states have call successors, (1858), 483 states have call predecessors, (1858), 657 states have return successors, (2544), 1710 states have call predecessors, (2544), 1853 states have call successors, (2544) [2023-11-23 21:13:58,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8990 states to 8990 states and 14379 transitions. [2023-11-23 21:13:58,884 INFO L78 Accepts]: Start accepts. Automaton has 8990 states and 14379 transitions. Word has length 83 [2023-11-23 21:13:58,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:13:58,885 INFO L495 AbstractCegarLoop]: Abstraction has 8990 states and 14379 transitions. [2023-11-23 21:13:58,886 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.25) internal successors, (53), 4 states have internal predecessors, (53), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:13:58,887 INFO L276 IsEmpty]: Start isEmpty. Operand 8990 states and 14379 transitions. [2023-11-23 21:13:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2023-11-23 21:13:58,891 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:13:58,891 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2023-11-23 21:13:58,891 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-11-23 21:13:58,891 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:13:58,892 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:13:58,892 INFO L85 PathProgramCache]: Analyzing trace with hash -768714363, now seen corresponding path program 1 times [2023-11-23 21:13:58,892 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:13:58,892 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1851112301] [2023-11-23 21:13:58,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:13:58,893 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:13:58,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:13:59,152 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:13:59,152 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:13:59,152 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1851112301] [2023-11-23 21:13:59,152 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1851112301] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:13:59,152 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:13:59,153 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:13:59,153 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225224320] [2023-11-23 21:13:59,153 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:13:59,153 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:13:59,154 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:13:59,154 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:13:59,154 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:13:59,155 INFO L87 Difference]: Start difference. First operand 8990 states and 14379 transitions. Second operand has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:02,211 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:02,211 INFO L93 Difference]: Finished difference Result 27335 states and 45579 transitions. [2023-11-23 21:14:02,212 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:14:02,212 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) Word has length 84 [2023-11-23 21:14:02,213 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:02,375 INFO L225 Difference]: With dead ends: 27335 [2023-11-23 21:14:02,375 INFO L226 Difference]: Without dead ends: 18382 [2023-11-23 21:14:02,430 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:14:02,431 INFO L413 NwaCegarLoop]: 322 mSDtfsCounter, 1035 mSDsluCounter, 359 mSDsCounter, 0 mSdLazyCounter, 789 mSolverCounterSat, 324 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1098 SdHoareTripleChecker+Valid, 681 SdHoareTripleChecker+Invalid, 1113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 324 IncrementalHoareTripleChecker+Valid, 789 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:02,431 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1098 Valid, 681 Invalid, 1113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [324 Valid, 789 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2023-11-23 21:14:02,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18382 states. [2023-11-23 21:14:04,427 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18382 to 17596. [2023-11-23 21:14:04,452 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17596 states, 12677 states have (on average 1.5350635008282716) internal successors, (19460), 13702 states have internal predecessors, (19460), 3565 states have call successors, (3565), 955 states have call predecessors, (3565), 1353 states have return successors, (5735), 3257 states have call predecessors, (5735), 3560 states have call successors, (5735) [2023-11-23 21:14:04,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17596 states to 17596 states and 28760 transitions. [2023-11-23 21:14:04,562 INFO L78 Accepts]: Start accepts. Automaton has 17596 states and 28760 transitions. Word has length 84 [2023-11-23 21:14:04,562 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-11-23 21:14:04,563 INFO L495 AbstractCegarLoop]: Abstraction has 17596 states and 28760 transitions. [2023-11-23 21:14:04,563 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 13.5) internal successors, (54), 4 states have internal predecessors, (54), 4 states have call successors, (14), 3 states have call predecessors, (14), 2 states have return successors, (13), 3 states have call predecessors, (13), 3 states have call successors, (13) [2023-11-23 21:14:04,563 INFO L276 IsEmpty]: Start isEmpty. Operand 17596 states and 28760 transitions. [2023-11-23 21:14:04,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2023-11-23 21:14:04,566 INFO L187 NwaCegarLoop]: Found error trace [2023-11-23 21:14:04,567 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-11-23 21:14:04,567 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-11-23 21:14:04,567 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2023-11-23 21:14:04,567 INFO L160 PredicateUnifier]: Initialized classic predicate unifier [2023-11-23 21:14:04,568 INFO L85 PathProgramCache]: Analyzing trace with hash -4144553, now seen corresponding path program 1 times [2023-11-23 21:14:04,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2023-11-23 21:14:04,568 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917756427] [2023-11-23 21:14:04,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-11-23 21:14:04,569 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-11-23 21:14:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-11-23 21:14:04,771 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2023-11-23 21:14:04,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2023-11-23 21:14:04,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1917756427] [2023-11-23 21:14:04,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1917756427] provided 1 perfect and 0 imperfect interpolant sequences [2023-11-23 21:14:04,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-11-23 21:14:04,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-11-23 21:14:04,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916729626] [2023-11-23 21:14:04,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-11-23 21:14:04,773 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-11-23 21:14:04,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2023-11-23 21:14:04,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-11-23 21:14:04,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-11-23 21:14:04,775 INFO L87 Difference]: Start difference. First operand 17596 states and 28760 transitions. Second operand has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) [2023-11-23 21:14:09,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-11-23 21:14:09,036 INFO L93 Difference]: Finished difference Result 53615 states and 94143 transitions. [2023-11-23 21:14:09,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-11-23 21:14:09,037 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 13.75) internal successors, (55), 4 states have internal predecessors, (55), 4 states have call successors, (15), 3 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 3 states have call successors, (14) Word has length 88 [2023-11-23 21:14:09,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-11-23 21:14:09,298 INFO L225 Difference]: With dead ends: 53615 [2023-11-23 21:14:09,298 INFO L226 Difference]: Without dead ends: 36070 [2023-11-23 21:14:09,366 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-11-23 21:14:09,368 INFO L413 NwaCegarLoop]: 333 mSDtfsCounter, 1021 mSDsluCounter, 363 mSDsCounter, 0 mSdLazyCounter, 788 mSolverCounterSat, 318 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1081 SdHoareTripleChecker+Valid, 696 SdHoareTripleChecker+Invalid, 1106 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 318 IncrementalHoareTripleChecker+Valid, 788 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2023-11-23 21:14:09,368 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1081 Valid, 696 Invalid, 1106 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [318 Valid, 788 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2023-11-23 21:14:09,411 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36070 states.