./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 4fc63b2a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2 --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 d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-4fc63b2 [2024-11-02 12:30:50,883 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-02 12:30:50,946 INFO L114 SettingsManager]: Loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/config/svcomp-Reach-32bit-Taipan_Default.epf [2024-11-02 12:30:50,951 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-02 12:30:50,951 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-02 12:30:50,986 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-02 12:30:50,987 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-02 12:30:50,987 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-02 12:30:50,990 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-02 12:30:50,991 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-02 12:30:50,991 INFO L153 SettingsManager]: * User list type=DISABLED [2024-11-02 12:30:50,992 INFO L151 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2024-11-02 12:30:50,992 INFO L153 SettingsManager]: * Explicit value domain=true [2024-11-02 12:30:50,992 INFO L153 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2024-11-02 12:30:50,993 INFO L153 SettingsManager]: * Octagon Domain=false [2024-11-02 12:30:50,993 INFO L153 SettingsManager]: * Abstract domain=CompoundDomain [2024-11-02 12:30:50,993 INFO L153 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2024-11-02 12:30:50,996 INFO L153 SettingsManager]: * Use the RCFG-of-the-future interface=true [2024-11-02 12:30:50,996 INFO L153 SettingsManager]: * Interval Domain=false [2024-11-02 12:30:50,997 INFO L151 SettingsManager]: Preferences of Sifa differ from their defaults: [2024-11-02 12:30:50,999 INFO L153 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2024-11-02 12:30:51,000 INFO L153 SettingsManager]: * Simplification Technique=POLY_PAC [2024-11-02 12:30:51,001 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-02 12:30:51,001 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-02 12:30:51,001 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-02 12:30:51,001 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-02 12:30:51,001 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-02 12:30:51,002 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-02 12:30:51,002 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-02 12:30:51,002 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-02 12:30:51,002 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-02 12:30:51,003 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-02 12:30:51,003 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-02 12:30:51,003 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-02 12:30:51,003 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-02 12:30:51,003 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-02 12:30:51,006 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-02 12:30:51,006 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-02 12:30:51,006 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:51,007 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-02 12:30:51,007 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-02 12:30:51,008 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-02 12:30:51,008 INFO L153 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2024-11-02 12:30:51,008 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-02 12:30:51,008 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-02 12:30:51,008 INFO L153 SettingsManager]: * Trace refinement exception blacklist=NONE [2024-11-02 12:30:51,009 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-02 12:30:51,009 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_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> d29c49d66a80c5cce6b00f5730e0d825d56678e7df63108e14ba577a66cb87d7 [2024-11-02 12:30:51,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-02 12:30:51,362 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-02 12:30:51,366 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-02 12:30:51,368 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-02 12:30:51,369 INFO L274 PluginConnector]: CDTParser initialized [2024-11-02 12:30:51,370 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/../../sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c Unable to find full path for "g++" [2024-11-02 12:30:53,833 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-02 12:30:54,199 INFO L384 CDTParser]: Found 1 translation units. [2024-11-02 12:30:54,201 INFO L180 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c [2024-11-02 12:30:54,228 INFO L427 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/data/6473c5198/c45b4eea60784cc3a514a5bd8081ee9d/FLAG5dd9825e2 [2024-11-02 12:30:54,247 INFO L435 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/data/6473c5198/c45b4eea60784cc3a514a5bd8081ee9d [2024-11-02 12:30:54,249 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-02 12:30:54,251 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-02 12:30:54,255 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:54,256 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-02 12:30:54,262 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-02 12:30:54,263 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:54" (1/1) ... [2024-11-02 12:30:54,265 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@61ef9ec9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:54, skipping insertion in model container [2024-11-02 12:30:54,267 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.11 12:30:54" (1/1) ... [2024-11-02 12:30:54,354 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-02 12:30:54,587 WARN L251 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_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2024-11-02 12:30:55,004 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:55,022 INFO L200 MainTranslator]: Completed pre-run [2024-11-02 12:30:55,034 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Person.i","") [48] [2024-11-02 12:30:55,036 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"scenario.i","") [169] [2024-11-02 12:30:55,037 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"wsllib_check.i","") [185] [2024-11-02 12:30:55,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Elevator.i","") [194] [2024-11-02 12:30:55,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Test.i","") [1871] [2024-11-02 12:30:55,038 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"featureselect.i","") [2228] [2024-11-02 12:30:55,039 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Specification1_spec.i","") [2263] [2024-11-02 12:30:55,039 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"libacc.i","") [2444] [2024-11-02 12:30:55,039 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"Floor.i","") [2810] [2024-11-02 12:30:55,039 WARN L75 lationResultReporter]: Unsoundness Warning: Ignoring preprocessor pragma C: #pragma merger(0,"UnitTests.i","") [3475] [2024-11-02 12:30:55,053 WARN L251 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_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/sv-benchmarks/c/product-lines/elevator_spec1_product32.cil.c[4316,4329] [2024-11-02 12:30:55,195 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-02 12:30:55,248 INFO L204 MainTranslator]: Completed translation [2024-11-02 12:30:55,248 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55 WrapperNode [2024-11-02 12:30:55,248 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-02 12:30:55,249 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:55,250 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-02 12:30:55,250 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-02 12:30:55,256 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,288 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,359 INFO L138 Inliner]: procedures = 99, calls = 356, calls flagged for inlining = 29, calls inlined = 25, statements flattened = 969 [2024-11-02 12:30:55,363 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-02 12:30:55,364 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-02 12:30:55,365 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-02 12:30:55,365 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-02 12:30:55,376 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,376 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,383 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,383 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,407 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,426 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,431 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,436 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,445 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-02 12:30:55,446 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-02 12:30:55,447 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-02 12:30:55,447 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-02 12:30:55,448 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (1/1) ... [2024-11-02 12:30:55,454 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2024-11-02 12:30:55,468 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/z3 [2024-11-02 12:30:55,486 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2024-11-02 12:30:55,502 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e57e26ef-8bc4-4a2a-8bfb-95e0fd627081/bin/utaipan-verify-DbMuA5NWw2/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2024-11-02 12:30:55,557 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2024-11-02 12:30:55,557 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2024-11-02 12:30:55,559 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2024-11-02 12:30:55,559 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2024-11-02 12:30:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2024-11-02 12:30:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2024-11-02 12:30:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2024-11-02 12:30:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2024-11-02 12:30:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2024-11-02 12:30:55,560 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2024-11-02 12:30:55,560 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2024-11-02 12:30:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2024-11-02 12:30:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2024-11-02 12:30:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2024-11-02 12:30:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2024-11-02 12:30:55,561 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2024-11-02 12:30:55,561 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2024-11-02 12:30:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2024-11-02 12:30:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2024-11-02 12:30:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2024-11-02 12:30:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2024-11-02 12:30:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2024-11-02 12:30:55,562 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2024-11-02 12:30:55,562 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2024-11-02 12:30:55,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-02 12:30:55,566 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-02 12:30:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2024-11-02 12:30:55,567 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2024-11-02 12:30:55,567 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2024-11-02 12:30:55,568 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2024-11-02 12:30:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2024-11-02 12:30:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2024-11-02 12:30:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2024-11-02 12:30:55,569 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2024-11-02 12:30:55,569 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2024-11-02 12:30:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2024-11-02 12:30:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2024-11-02 12:30:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2024-11-02 12:30:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2024-11-02 12:30:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2024-11-02 12:30:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2024-11-02 12:30:55,570 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2024-11-02 12:30:55,570 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2024-11-02 12:30:55,571 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2024-11-02 12:30:55,571 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2024-11-02 12:30:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2024-11-02 12:30:55,572 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2024-11-02 12:30:55,572 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2024-11-02 12:30:55,573 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2024-11-02 12:30:55,573 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2024-11-02 12:30:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2024-11-02 12:30:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2024-11-02 12:30:55,574 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2024-11-02 12:30:55,574 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2024-11-02 12:30:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-02 12:30:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-02 12:30:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2024-11-02 12:30:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2024-11-02 12:30:55,575 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2024-11-02 12:30:55,575 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2024-11-02 12:30:55,802 INFO L238 CfgBuilder]: Building ICFG [2024-11-02 12:30:55,805 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-02 12:30:57,504 INFO L? ?]: Removed 485 outVars from TransFormulas that were not future-live. [2024-11-02 12:30:57,504 INFO L287 CfgBuilder]: Performing block encoding [2024-11-02 12:30:58,677 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-02 12:30:58,677 INFO L316 CfgBuilder]: Removed 1 assume(true) statements. [2024-11-02 12:30:58,678 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:58 BoogieIcfgContainer [2024-11-02 12:30:58,678 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-02 12:30:58,682 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-02 12:30:58,682 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-02 12:30:58,685 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-02 12:30:58,686 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.11 12:30:54" (1/3) ... [2024-11-02 12:30:58,687 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b22357e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:58, skipping insertion in model container [2024-11-02 12:30:58,687 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.11 12:30:55" (2/3) ... [2024-11-02 12:30:58,689 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3b22357e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.11 12:30:58, skipping insertion in model container [2024-11-02 12:30:58,689 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.11 12:30:58" (3/3) ... [2024-11-02 12:30:58,692 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product32.cil.c [2024-11-02 12:30:58,715 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-02 12:30:58,715 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-02 12:30:58,818 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-02 12:30:58,824 INFO L333 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mAutomataTypeConcurrency=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;@2be974e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-02 12:30:58,825 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-02 12:30:58,835 INFO L276 IsEmpty]: Start isEmpty. Operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) [2024-11-02 12:30:58,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-02 12:30:58,851 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:30:58,852 INFO L215 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] [2024-11-02 12:30:58,854 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:30:58,861 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:30:58,862 INFO L85 PathProgramCache]: Analyzing trace with hash 1359182888, now seen corresponding path program 1 times [2024-11-02 12:30:58,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:30:58,901 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1047282948] [2024-11-02 12:30:58,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:30:58,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:30:59,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:00,193 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-02 12:31:00,193 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:00,197 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1047282948] [2024-11-02 12:31:00,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1047282948] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:00,198 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:00,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:31:00,200 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760657733] [2024-11-02 12:31:00,208 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:00,214 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:00,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:00,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:00,248 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:00,252 INFO L87 Difference]: Start difference. First operand has 413 states, 275 states have (on average 1.5672727272727274) internal successors, (431), 298 states have internal predecessors, (431), 108 states have call successors, (108), 28 states have call predecessors, (108), 28 states have return successors, (108), 101 states have call predecessors, (108), 108 states have call successors, (108) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-02 12:31:03,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:03,516 INFO L93 Difference]: Finished difference Result 1329 states and 2129 transitions. [2024-11-02 12:31:03,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-02 12:31:03,530 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2024-11-02 12:31:03,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:03,568 INFO L225 Difference]: With dead ends: 1329 [2024-11-02 12:31:03,568 INFO L226 Difference]: Without dead ends: 933 [2024-11-02 12:31:03,579 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:03,583 INFO L432 NwaCegarLoop]: 301 mSDtfsCounter, 1299 mSDsluCounter, 735 mSDsCounter, 0 mSdLazyCounter, 1527 mSolverCounterSat, 482 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1373 SdHoareTripleChecker+Valid, 1036 SdHoareTripleChecker+Invalid, 2009 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 482 IncrementalHoareTripleChecker+Valid, 1527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:03,588 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1373 Valid, 1036 Invalid, 2009 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [482 Valid, 1527 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2024-11-02 12:31:03,616 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 933 states. [2024-11-02 12:31:03,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 933 to 846. [2024-11-02 12:31:03,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 846 states, 589 states have (on average 1.5823429541595926) internal successors, (932), 619 states have internal predecessors, (932), 207 states have call successors, (207), 48 states have call predecessors, (207), 49 states have return successors, (209), 191 states have call predecessors, (209), 202 states have call successors, (209) [2024-11-02 12:31:03,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 846 states to 846 states and 1348 transitions. [2024-11-02 12:31:03,799 INFO L78 Accepts]: Start accepts. Automaton has 846 states and 1348 transitions. Word has length 54 [2024-11-02 12:31:03,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:03,800 INFO L471 AbstractCegarLoop]: Abstraction has 846 states and 1348 transitions. [2024-11-02 12:31:03,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2024-11-02 12:31:03,801 INFO L276 IsEmpty]: Start isEmpty. Operand 846 states and 1348 transitions. [2024-11-02 12:31:03,816 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2024-11-02 12:31:03,816 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:03,816 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:03,817 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-02 12:31:03,817 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:03,820 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:03,820 INFO L85 PathProgramCache]: Analyzing trace with hash -107259226, now seen corresponding path program 1 times [2024-11-02 12:31:03,820 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:03,820 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244156275] [2024-11-02 12:31:03,821 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:03,821 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:03,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:04,665 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:31:04,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:04,666 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244156275] [2024-11-02 12:31:04,667 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244156275] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:04,667 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:04,667 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-02 12:31:04,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1589659528] [2024-11-02 12:31:04,668 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:04,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-02 12:31:04,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:04,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-02 12:31:04,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:04,672 INFO L87 Difference]: Start difference. First operand 846 states and 1348 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-02 12:31:08,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:08,943 INFO L93 Difference]: Finished difference Result 2916 states and 4689 transitions. [2024-11-02 12:31:08,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-02 12:31:08,944 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 98 [2024-11-02 12:31:08,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:08,968 INFO L225 Difference]: With dead ends: 2916 [2024-11-02 12:31:08,969 INFO L226 Difference]: Without dead ends: 2093 [2024-11-02 12:31:08,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=65, Invalid=241, Unknown=0, NotChecked=0, Total=306 [2024-11-02 12:31:08,979 INFO L432 NwaCegarLoop]: 557 mSDtfsCounter, 1405 mSDsluCounter, 1748 mSDsCounter, 0 mSdLazyCounter, 4434 mSolverCounterSat, 669 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1493 SdHoareTripleChecker+Valid, 2305 SdHoareTripleChecker+Invalid, 5103 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 669 IncrementalHoareTripleChecker+Valid, 4434 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:08,982 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1493 Valid, 2305 Invalid, 5103 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [669 Valid, 4434 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2024-11-02 12:31:08,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2093 states. [2024-11-02 12:31:09,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2093 to 1906. [2024-11-02 12:31:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1906 states, 1290 states have (on average 1.5534883720930233) internal successors, (2004), 1362 states have internal predecessors, (2004), 512 states have call successors, (512), 91 states have call predecessors, (512), 103 states have return successors, (531), 485 states have call predecessors, (531), 507 states have call successors, (531) [2024-11-02 12:31:09,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1906 states to 1906 states and 3047 transitions. [2024-11-02 12:31:09,193 INFO L78 Accepts]: Start accepts. Automaton has 1906 states and 3047 transitions. Word has length 98 [2024-11-02 12:31:09,194 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:09,194 INFO L471 AbstractCegarLoop]: Abstraction has 1906 states and 3047 transitions. [2024-11-02 12:31:09,194 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-02 12:31:09,195 INFO L276 IsEmpty]: Start isEmpty. Operand 1906 states and 3047 transitions. [2024-11-02 12:31:09,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2024-11-02 12:31:09,199 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:09,199 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:09,201 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-02 12:31:09,202 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:09,206 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:09,206 INFO L85 PathProgramCache]: Analyzing trace with hash -1020386867, now seen corresponding path program 1 times [2024-11-02 12:31:09,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:09,206 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1111465846] [2024-11-02 12:31:09,207 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:09,207 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:09,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:09,884 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:31:09,884 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:09,884 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1111465846] [2024-11-02 12:31:09,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1111465846] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:09,885 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:09,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-02 12:31:09,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684724247] [2024-11-02 12:31:09,885 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:09,886 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-02 12:31:09,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:09,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-02 12:31:09,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-02 12:31:09,889 INFO L87 Difference]: Start difference. First operand 1906 states and 3047 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-02 12:31:12,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:12,760 INFO L93 Difference]: Finished difference Result 4803 states and 7696 transitions. [2024-11-02 12:31:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-02 12:31:12,761 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 99 [2024-11-02 12:31:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:12,785 INFO L225 Difference]: With dead ends: 4803 [2024-11-02 12:31:12,785 INFO L226 Difference]: Without dead ends: 2922 [2024-11-02 12:31:12,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-02 12:31:12,797 INFO L432 NwaCegarLoop]: 386 mSDtfsCounter, 1228 mSDsluCounter, 1269 mSDsCounter, 0 mSdLazyCounter, 2401 mSolverCounterSat, 468 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1311 SdHoareTripleChecker+Valid, 1655 SdHoareTripleChecker+Invalid, 2869 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 468 IncrementalHoareTripleChecker+Valid, 2401 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:12,798 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1311 Valid, 1655 Invalid, 2869 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [468 Valid, 2401 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2024-11-02 12:31:12,805 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2922 states. [2024-11-02 12:31:13,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2922 to 2804. [2024-11-02 12:31:13,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2804 states, 1924 states have (on average 1.5618503118503118) internal successors, (3005), 2023 states have internal predecessors, (3005), 714 states have call successors, (714), 145 states have call predecessors, (714), 165 states have return successors, (761), 679 states have call predecessors, (761), 709 states have call successors, (761) [2024-11-02 12:31:13,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2804 states to 2804 states and 4480 transitions. [2024-11-02 12:31:13,074 INFO L78 Accepts]: Start accepts. Automaton has 2804 states and 4480 transitions. Word has length 99 [2024-11-02 12:31:13,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:13,076 INFO L471 AbstractCegarLoop]: Abstraction has 2804 states and 4480 transitions. [2024-11-02 12:31:13,076 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2024-11-02 12:31:13,076 INFO L276 IsEmpty]: Start isEmpty. Operand 2804 states and 4480 transitions. [2024-11-02 12:31:13,079 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2024-11-02 12:31:13,079 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:13,080 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:13,080 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-02 12:31:13,080 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:13,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:13,081 INFO L85 PathProgramCache]: Analyzing trace with hash 604984836, now seen corresponding path program 1 times [2024-11-02 12:31:13,081 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:13,081 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [688083670] [2024-11-02 12:31:13,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:13,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:13,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:13,504 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:31:13,505 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:13,505 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [688083670] [2024-11-02 12:31:13,505 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [688083670] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:13,505 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:13,505 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-02 12:31:13,506 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1928825331] [2024-11-02 12:31:13,506 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:13,506 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-02 12:31:13,507 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:13,507 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-02 12:31:13,508 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-02 12:31:13,508 INFO L87 Difference]: Start difference. First operand 2804 states and 4480 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-02 12:31:14,293 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-02 12:31:14,293 INFO L93 Difference]: Finished difference Result 2905 states and 4646 transitions. [2024-11-02 12:31:14,294 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-02 12:31:14,294 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2024-11-02 12:31:14,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-02 12:31:14,317 INFO L225 Difference]: With dead ends: 2905 [2024-11-02 12:31:14,317 INFO L226 Difference]: Without dead ends: 2890 [2024-11-02 12:31:14,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-02 12:31:14,325 INFO L432 NwaCegarLoop]: 591 mSDtfsCounter, 699 mSDsluCounter, 1007 mSDsCounter, 0 mSdLazyCounter, 346 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 700 SdHoareTripleChecker+Valid, 1598 SdHoareTripleChecker+Invalid, 361 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 346 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-02 12:31:14,327 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [700 Valid, 1598 Invalid, 361 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 346 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-02 12:31:14,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2890 states. [2024-11-02 12:31:14,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2890 to 2810. [2024-11-02 12:31:14,583 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2810 states, 1930 states have (on average 1.560103626943005) internal successors, (3011), 2029 states have internal predecessors, (3011), 714 states have call successors, (714), 145 states have call predecessors, (714), 165 states have return successors, (761), 679 states have call predecessors, (761), 709 states have call successors, (761) [2024-11-02 12:31:14,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2810 states to 2810 states and 4486 transitions. [2024-11-02 12:31:14,600 INFO L78 Accepts]: Start accepts. Automaton has 2810 states and 4486 transitions. Word has length 103 [2024-11-02 12:31:14,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-02 12:31:14,602 INFO L471 AbstractCegarLoop]: Abstraction has 2810 states and 4486 transitions. [2024-11-02 12:31:14,602 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2024-11-02 12:31:14,602 INFO L276 IsEmpty]: Start isEmpty. Operand 2810 states and 4486 transitions. [2024-11-02 12:31:14,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2024-11-02 12:31:14,606 INFO L207 NwaCegarLoop]: Found error trace [2024-11-02 12:31:14,606 INFO L215 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-02 12:31:14,607 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-02 12:31:14,607 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-02 12:31:14,607 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-02 12:31:14,607 INFO L85 PathProgramCache]: Analyzing trace with hash -197132796, now seen corresponding path program 1 times [2024-11-02 12:31:14,607 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2024-11-02 12:31:14,608 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037775201] [2024-11-02 12:31:14,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-02 12:31:14,608 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-02 12:31:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-02 12:31:15,301 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-02 12:31:15,302 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2024-11-02 12:31:15,302 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037775201] [2024-11-02 12:31:15,302 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037775201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-02 12:31:15,302 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-02 12:31:15,302 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-11-02 12:31:15,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [882495352] [2024-11-02 12:31:15,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-02 12:31:15,303 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-02 12:31:15,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2024-11-02 12:31:15,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-02 12:31:15,306 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2024-11-02 12:31:15,306 INFO L87 Difference]: Start difference. First operand 2810 states and 4486 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20)