./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b 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_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS --witnessprinter.witness.filename witness.graphml --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 a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-8393723 [2022-11-19 07:28:45,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:28:45,953 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:28:45,975 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:28:45,976 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:28:45,977 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:28:45,979 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:28:45,981 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:28:45,982 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:28:45,983 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:28:45,984 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:28:45,986 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:28:45,986 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:28:45,987 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:28:45,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:28:45,990 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:28:45,991 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:28:45,992 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:28:45,994 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:28:45,996 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:28:45,998 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:28:46,000 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:28:46,001 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:28:46,003 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:28:46,007 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:28:46,007 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:28:46,008 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:28:46,009 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:28:46,009 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:28:46,011 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:28:46,011 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:28:46,012 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:28:46,013 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:28:46,014 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:28:46,015 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:28:46,016 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:28:46,017 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:28:46,017 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:28:46,017 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:28:46,018 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:28:46,019 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:28:46,020 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:28:46,045 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:28:46,045 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:28:46,046 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:28:46,046 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:28:46,047 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:28:46,047 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:28:46,048 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:28:46,048 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:28:46,048 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:28:46,048 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:28:46,049 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:28:46,049 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:28:46,049 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:28:46,049 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:28:46,050 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:28:46,050 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:28:46,050 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:28:46,050 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:28:46,051 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:28:46,051 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:28:46,052 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:28:46,052 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:28:46,052 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:28:46,052 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:28:46,052 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:28:46,053 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:28:46,053 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:28:46,053 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:28:46,053 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:28:46,054 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:28:46,054 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:28:46,054 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:28:46,054 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:46,054 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:28:46,055 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:28:46,055 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:28:46,055 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:28:46,055 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:28:46,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:28:46,056 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:28:46,056 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:28:46,056 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> a24bdc0807d94f83606acfe112db107808ae7409e0ad1ecc1d01e9704d0b4ece [2022-11-19 07:28:46,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:28:46,354 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:28:46,357 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:28:46,359 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:28:46,359 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:28:46,361 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-11-19 07:28:46,448 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/data/cce69097b/333146d6afda44c6b8df79e03aa9e4f3/FLAGa56b20667 [2022-11-19 07:28:47,168 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:28:47,169 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c [2022-11-19 07:28:47,205 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/data/cce69097b/333146d6afda44c6b8df79e03aa9e4f3/FLAGa56b20667 [2022-11-19 07:28:47,332 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/data/cce69097b/333146d6afda44c6b8df79e03aa9e4f3 [2022-11-19 07:28:47,337 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:28:47,339 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:28:47,343 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:47,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:28:47,348 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:28:47,349 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:47" (1/1) ... [2022-11-19 07:28:47,351 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@d437aa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:47, skipping insertion in model container [2022-11-19 07:28:47,352 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:28:47" (1/1) ... [2022-11-19 07:28:47,360 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:28:47,441 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:28:47,684 WARN L234 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_e63a61ee-792a-405f-9cd1-6cf823e71b1c/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2022-11-19 07:28:48,079 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:48,091 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:28:48,108 WARN L234 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_e63a61ee-792a-405f-9cd1-6cf823e71b1c/sv-benchmarks/c/product-lines/elevator_spec1_product01.cil.c[1545,1558] [2022-11-19 07:28:48,224 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:28:48,246 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:28:48,246 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48 WrapperNode [2022-11-19 07:28:48,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:28:48,247 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:48,248 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:28:48,248 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:28:48,256 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,289 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,365 INFO L138 Inliner]: procedures = 88, calls = 329, calls flagged for inlining = 23, calls inlined = 20, statements flattened = 743 [2022-11-19 07:28:48,366 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:28:48,367 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:28:48,368 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:28:48,368 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:28:48,377 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,378 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,394 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,395 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,426 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,467 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,470 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,475 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,481 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:28:48,482 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:28:48,482 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:28:48,482 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:28:48,499 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (1/1) ... [2022-11-19 07:28:48,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:28:48,523 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:28:48,537 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:28:48,551 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:28:48,587 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:28:48,587 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:28:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:28:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-19 07:28:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-19 07:28:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:28:48,588 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:28:48,588 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:28:48,589 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:28:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:28:48,589 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:28:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:28:48,589 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:28:48,589 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:28:48,590 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:28:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-19 07:28:48,590 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-19 07:28:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:28:48,590 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:28:48,590 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:28:48,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:28:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:28:48,591 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:28:48,591 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:28:48,591 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:28:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:28:48,592 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:28:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:28:48,592 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:28:48,592 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:28:48,594 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:28:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:28:48,595 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:28:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:28:48,595 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:28:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:28:48,595 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:28:48,595 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:28:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:28:48,596 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:28:48,596 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:28:48,596 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:28:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:28:48,597 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:28:48,597 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:28:48,598 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:28:48,807 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:28:48,809 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:28:50,065 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:28:50,923 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:28:50,923 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:28:50,929 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:50 BoogieIcfgContainer [2022-11-19 07:28:50,929 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:28:50,934 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:28:50,934 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:28:50,938 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:28:50,939 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:28:47" (1/3) ... [2022-11-19 07:28:50,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aabcb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:50, skipping insertion in model container [2022-11-19 07:28:50,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:28:48" (2/3) ... [2022-11-19 07:28:50,940 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@aabcb24 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:28:50, skipping insertion in model container [2022-11-19 07:28:50,940 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:28:50" (3/3) ... [2022-11-19 07:28:50,942 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product01.cil.c [2022-11-19 07:28:50,964 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:28:50,964 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:28:51,067 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:28:51,076 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=LoopsAndPotentialCycles, 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;@51f1a911, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:28:51,076 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:28:51,083 INFO L276 IsEmpty]: Start isEmpty. Operand has 348 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-19 07:28:51,117 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-19 07:28:51,118 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:51,119 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] [2022-11-19 07:28:51,119 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:51,125 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:51,125 INFO L85 PathProgramCache]: Analyzing trace with hash -895696957, now seen corresponding path program 1 times [2022-11-19 07:28:51,138 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:51,138 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664260997] [2022-11-19 07:28:51,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:51,139 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:51,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:52,217 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:28:52,218 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:52,218 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664260997] [2022-11-19 07:28:52,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664260997] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:52,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:52,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:28:52,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [419694709] [2022-11-19 07:28:52,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:52,230 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:28:52,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:52,271 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:28:52,273 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:28:52,279 INFO L87 Difference]: Start difference. First operand has 348 states, 236 states have (on average 1.6228813559322033) internal successors, (383), 257 states have internal predecessors, (383), 89 states have call successors, (89), 21 states have call predecessors, (89), 21 states have return successors, (89), 83 states have call predecessors, (89), 89 states have call successors, (89) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 07:28:55,778 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:55,779 INFO L93 Difference]: Finished difference Result 1159 states and 1908 transitions. [2022-11-19 07:28:55,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-19 07:28:55,785 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2022-11-19 07:28:55,786 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:55,822 INFO L225 Difference]: With dead ends: 1159 [2022-11-19 07:28:55,826 INFO L226 Difference]: Without dead ends: 828 [2022-11-19 07:28:55,841 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 [2022-11-19 07:28:55,846 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1625 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2484 mSolverCounterSat, 504 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1686 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 2988 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 504 IncrementalHoareTripleChecker+Valid, 2484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:55,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1686 Valid, 1676 Invalid, 2988 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [504 Valid, 2484 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:28:55,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 828 states. [2022-11-19 07:28:56,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 828 to 779. [2022-11-19 07:28:56,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 779 states, 552 states have (on average 1.6431159420289856) internal successors, (907), 587 states have internal predecessors, (907), 184 states have call successors, (184), 40 states have call predecessors, (184), 42 states have return successors, (185), 176 states have call predecessors, (185), 179 states have call successors, (185) [2022-11-19 07:28:56,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 779 states to 779 states and 1276 transitions. [2022-11-19 07:28:56,046 INFO L78 Accepts]: Start accepts. Automaton has 779 states and 1276 transitions. Word has length 62 [2022-11-19 07:28:56,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:56,052 INFO L495 AbstractCegarLoop]: Abstraction has 779 states and 1276 transitions. [2022-11-19 07:28:56,053 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-19 07:28:56,054 INFO L276 IsEmpty]: Start isEmpty. Operand 779 states and 1276 transitions. [2022-11-19 07:28:56,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-19 07:28:56,062 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:56,063 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] [2022-11-19 07:28:56,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:28:56,065 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:56,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:56,070 INFO L85 PathProgramCache]: Analyzing trace with hash -832320358, now seen corresponding path program 1 times [2022-11-19 07:28:56,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:56,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [750772145] [2022-11-19 07:28:56,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:56,072 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:56,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:56,437 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:28:56,438 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:56,438 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [750772145] [2022-11-19 07:28:56,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [750772145] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:56,439 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:56,439 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:28:56,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1247291970] [2022-11-19 07:28:56,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:56,442 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:28:56,442 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:56,443 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:28:56,443 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:28:56,444 INFO L87 Difference]: Start difference. First operand 779 states and 1276 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:28:56,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:28:56,711 INFO L93 Difference]: Finished difference Result 1309 states and 2151 transitions. [2022-11-19 07:28:56,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:28:56,712 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-19 07:28:56,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:28:56,723 INFO L225 Difference]: With dead ends: 1309 [2022-11-19 07:28:56,723 INFO L226 Difference]: Without dead ends: 849 [2022-11-19 07:28:56,731 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 [2022-11-19 07:28:56,733 INFO L413 NwaCegarLoop]: 562 mSDtfsCounter, 41 mSDsluCounter, 1615 mSDsCounter, 0 mSdLazyCounter, 158 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2177 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 158 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:28:56,733 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2177 Invalid, 160 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 158 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:28:56,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 849 states. [2022-11-19 07:28:56,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 849 to 791. [2022-11-19 07:28:56,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 561 states have (on average 1.6327985739750446) internal successors, (916), 596 states have internal predecessors, (916), 184 states have call successors, (184), 40 states have call predecessors, (184), 45 states have return successors, (191), 179 states have call predecessors, (191), 179 states have call successors, (191) [2022-11-19 07:28:56,838 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1291 transitions. [2022-11-19 07:28:56,838 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1291 transitions. Word has length 67 [2022-11-19 07:28:56,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:28:56,839 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1291 transitions. [2022-11-19 07:28:56,839 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-19 07:28:56,839 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1291 transitions. [2022-11-19 07:28:56,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-19 07:28:56,842 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:28:56,842 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] [2022-11-19 07:28:56,842 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:28:56,842 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:28:56,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:28:56,843 INFO L85 PathProgramCache]: Analyzing trace with hash 2143206914, now seen corresponding path program 1 times [2022-11-19 07:28:56,843 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:28:56,843 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1749151055] [2022-11-19 07:28:56,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:28:56,844 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:28:56,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:28:57,438 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:28:57,439 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:28:57,439 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1749151055] [2022-11-19 07:28:57,439 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1749151055] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:28:57,440 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:28:57,440 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:28:57,440 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1752182778] [2022-11-19 07:28:57,440 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:28:57,441 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:28:57,441 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:28:57,441 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:28:57,442 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:28:57,442 INFO L87 Difference]: Start difference. First operand 791 states and 1291 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-19 07:29:00,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:00,571 INFO L93 Difference]: Finished difference Result 1798 states and 2930 transitions. [2022-11-19 07:29:00,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:29:00,573 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2022-11-19 07:29:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:00,587 INFO L225 Difference]: With dead ends: 1798 [2022-11-19 07:29:00,587 INFO L226 Difference]: Without dead ends: 1230 [2022-11-19 07:29:00,590 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 [2022-11-19 07:29:00,591 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2195 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2150 mSolverCounterSat, 907 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2338 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 3057 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 907 IncrementalHoareTripleChecker+Valid, 2150 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:00,592 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2338 Valid, 1336 Invalid, 3057 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [907 Valid, 2150 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-11-19 07:29:00,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1230 states. [2022-11-19 07:29:00,678 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1230 to 1136. [2022-11-19 07:29:00,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 794 states have (on average 1.5881612090680102) internal successors, (1261), 846 states have internal predecessors, (1261), 270 states have call successors, (270), 63 states have call predecessors, (270), 71 states have return successors, (286), 263 states have call predecessors, (286), 265 states have call successors, (286) [2022-11-19 07:29:00,691 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1817 transitions. [2022-11-19 07:29:00,692 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1817 transitions. Word has length 71 [2022-11-19 07:29:00,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:00,692 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1817 transitions. [2022-11-19 07:29:00,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-19 07:29:00,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1817 transitions. [2022-11-19 07:29:00,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-19 07:29:00,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:00,696 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] [2022-11-19 07:29:00,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:29:00,696 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:00,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:00,697 INFO L85 PathProgramCache]: Analyzing trace with hash 351547510, now seen corresponding path program 1 times [2022-11-19 07:29:00,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:00,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [527239256] [2022-11-19 07:29:00,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:00,697 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:00,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:01,068 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:29:01,068 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:01,068 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [527239256] [2022-11-19 07:29:01,069 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [527239256] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:01,069 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:01,069 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:29:01,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [683015609] [2022-11-19 07:29:01,070 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:01,070 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:29:01,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:01,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:29:01,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:29:01,072 INFO L87 Difference]: Start difference. First operand 1136 states and 1817 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:29:01,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:01,435 INFO L93 Difference]: Finished difference Result 2193 states and 3564 transitions. [2022-11-19 07:29:01,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:01,436 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-11-19 07:29:01,437 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:01,446 INFO L225 Difference]: With dead ends: 2193 [2022-11-19 07:29:01,446 INFO L226 Difference]: Without dead ends: 1136 [2022-11-19 07:29:01,454 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:01,464 INFO L413 NwaCegarLoop]: 545 mSDtfsCounter, 221 mSDsluCounter, 1394 mSDsCounter, 0 mSdLazyCounter, 202 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1939 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 202 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:01,465 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1939 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 202 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:29:01,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1136 states. [2022-11-19 07:29:01,574 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1136 to 1136. [2022-11-19 07:29:01,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1136 states, 794 states have (on average 1.5478589420654911) internal successors, (1229), 846 states have internal predecessors, (1229), 270 states have call successors, (270), 63 states have call predecessors, (270), 71 states have return successors, (286), 263 states have call predecessors, (286), 265 states have call successors, (286) [2022-11-19 07:29:01,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1136 states to 1136 states and 1785 transitions. [2022-11-19 07:29:01,587 INFO L78 Accepts]: Start accepts. Automaton has 1136 states and 1785 transitions. Word has length 74 [2022-11-19 07:29:01,588 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:01,588 INFO L495 AbstractCegarLoop]: Abstraction has 1136 states and 1785 transitions. [2022-11-19 07:29:01,588 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-19 07:29:01,588 INFO L276 IsEmpty]: Start isEmpty. Operand 1136 states and 1785 transitions. [2022-11-19 07:29:01,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 07:29:01,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:01,594 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:29:01,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:29:01,595 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:01,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:01,595 INFO L85 PathProgramCache]: Analyzing trace with hash -1570471703, now seen corresponding path program 1 times [2022-11-19 07:29:01,596 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:01,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [11197103] [2022-11-19 07:29:01,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:01,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:01,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:02,099 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:29:02,099 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:02,100 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [11197103] [2022-11-19 07:29:02,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [11197103] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:02,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:02,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:29:02,100 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113730471] [2022-11-19 07:29:02,100 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:02,101 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:29:02,101 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:02,102 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:29:02,102 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:29:02,102 INFO L87 Difference]: Start difference. First operand 1136 states and 1785 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:29:04,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:04,578 INFO L93 Difference]: Finished difference Result 2180 states and 3442 transitions. [2022-11-19 07:29:04,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:29:04,579 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2022-11-19 07:29:04,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:04,589 INFO L225 Difference]: With dead ends: 2180 [2022-11-19 07:29:04,589 INFO L226 Difference]: Without dead ends: 1324 [2022-11-19 07:29:04,593 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 [2022-11-19 07:29:04,594 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 912 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2265 mSolverCounterSat, 367 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 980 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2632 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 367 IncrementalHoareTripleChecker+Valid, 2265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:04,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [980 Valid, 1514 Invalid, 2632 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [367 Valid, 2265 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-19 07:29:04,597 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1324 states. [2022-11-19 07:29:04,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1324 to 1163. [2022-11-19 07:29:04,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 812 states have (on average 1.54064039408867) internal successors, (1251), 868 states have internal predecessors, (1251), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2022-11-19 07:29:04,692 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 1819 transitions. [2022-11-19 07:29:04,692 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 1819 transitions. Word has length 76 [2022-11-19 07:29:04,693 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:04,693 INFO L495 AbstractCegarLoop]: Abstraction has 1163 states and 1819 transitions. [2022-11-19 07:29:04,693 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-19 07:29:04,693 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 1819 transitions. [2022-11-19 07:29:04,695 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:29:04,695 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:04,696 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-19 07:29:04,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:29:04,696 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:04,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:04,697 INFO L85 PathProgramCache]: Analyzing trace with hash -72769100, now seen corresponding path program 1 times [2022-11-19 07:29:04,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:04,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1482394466] [2022-11-19 07:29:04,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:04,698 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:05,118 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:29:05,121 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:05,121 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1482394466] [2022-11-19 07:29:05,121 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1482394466] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:05,121 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:05,122 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:29:05,122 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [804419158] [2022-11-19 07:29:05,122 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:05,122 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:29:05,123 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:05,123 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:29:05,123 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:05,124 INFO L87 Difference]: Start difference. First operand 1163 states and 1819 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:29:05,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:05,851 INFO L93 Difference]: Finished difference Result 1235 states and 1932 transitions. [2022-11-19 07:29:05,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:29:05,851 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-19 07:29:05,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:05,865 INFO L225 Difference]: With dead ends: 1235 [2022-11-19 07:29:05,865 INFO L226 Difference]: Without dead ends: 1220 [2022-11-19 07:29:05,867 INFO L412 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 [2022-11-19 07:29:05,868 INFO L413 NwaCegarLoop]: 508 mSDtfsCounter, 604 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 493 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 605 SdHoareTripleChecker+Valid, 1680 SdHoareTripleChecker+Invalid, 508 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 493 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:05,869 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [605 Valid, 1680 Invalid, 508 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 493 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:29:05,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1220 states. [2022-11-19 07:29:05,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1220 to 1167. [2022-11-19 07:29:05,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 816 states have (on average 1.5379901960784315) internal successors, (1255), 872 states have internal predecessors, (1255), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2022-11-19 07:29:05,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1823 transitions. [2022-11-19 07:29:05,978 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1823 transitions. Word has length 83 [2022-11-19 07:29:05,978 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:05,978 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1823 transitions. [2022-11-19 07:29:05,978 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:29:05,979 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1823 transitions. [2022-11-19 07:29:05,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2022-11-19 07:29:05,985 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:05,985 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] [2022-11-19 07:29:05,985 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:29:05,986 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:05,986 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:05,986 INFO L85 PathProgramCache]: Analyzing trace with hash 2034699635, now seen corresponding path program 1 times [2022-11-19 07:29:05,986 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:05,986 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1262310414] [2022-11-19 07:29:05,987 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:05,987 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:06,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:06,459 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:29:06,460 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:06,460 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1262310414] [2022-11-19 07:29:06,460 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1262310414] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:29:06,460 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:29:06,461 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:29:06,461 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339209910] [2022-11-19 07:29:06,461 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:29:06,462 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:29:06,462 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:29:06,463 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:29:06,463 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:29:06,464 INFO L87 Difference]: Start difference. First operand 1167 states and 1823 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-19 07:29:06,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:29:06,710 INFO L93 Difference]: Finished difference Result 1186 states and 1847 transitions. [2022-11-19 07:29:06,710 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:29:06,711 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 85 [2022-11-19 07:29:06,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:29:06,720 INFO L225 Difference]: With dead ends: 1186 [2022-11-19 07:29:06,720 INFO L226 Difference]: Without dead ends: 1171 [2022-11-19 07:29:06,722 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:29:06,723 INFO L413 NwaCegarLoop]: 511 mSDtfsCounter, 41 mSDsluCounter, 1993 mSDsCounter, 0 mSdLazyCounter, 159 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2504 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 159 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:29:06,723 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2504 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:29:06,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2022-11-19 07:29:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1167. [2022-11-19 07:29:06,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1167 states, 816 states have (on average 1.5343137254901962) internal successors, (1252), 872 states have internal predecessors, (1252), 271 states have call successors, (271), 68 states have call predecessors, (271), 79 states have return successors, (297), 263 states have call predecessors, (297), 266 states have call successors, (297) [2022-11-19 07:29:06,862 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1167 states to 1167 states and 1820 transitions. [2022-11-19 07:29:06,868 INFO L78 Accepts]: Start accepts. Automaton has 1167 states and 1820 transitions. Word has length 85 [2022-11-19 07:29:06,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:29:06,870 INFO L495 AbstractCegarLoop]: Abstraction has 1167 states and 1820 transitions. [2022-11-19 07:29:06,870 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-19 07:29:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 1167 states and 1820 transitions. [2022-11-19 07:29:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:29:06,875 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:29:06,875 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:29:06,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:29:06,876 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:29:06,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:29:06,877 INFO L85 PathProgramCache]: Analyzing trace with hash -615279116, now seen corresponding path program 1 times [2022-11-19 07:29:06,877 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:29:06,877 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [218608275] [2022-11-19 07:29:06,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:06,878 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:29:06,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:08,234 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:29:08,234 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:29:08,234 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [218608275] [2022-11-19 07:29:08,234 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [218608275] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:29:08,235 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1850649538] [2022-11-19 07:29:08,235 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:29:08,235 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:29:08,235 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:29:08,243 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:29:08,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:29:08,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:29:08,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1797 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:29:08,773 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:29:11,767 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:29:11,767 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:29:15,595 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:29:15,595 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1850649538] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:29:15,596 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2121651667] [2022-11-19 07:29:15,621 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-19 07:29:15,621 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:29:15,625 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:29:15,632 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:29:15,632 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:29:22,857 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 578 for LOIs [2022-11-19 07:30:24,207 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2022-11-19 07:30:26,537 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 82 for LOIs [2022-11-19 07:30:27,105 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 42 for LOIs [2022-11-19 07:30:27,124 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 587 for LOIs [2022-11-19 07:30:31,005 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 438 for LOIs [2022-11-19 07:30:31,262 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 78 for LOIs [2022-11-19 07:30:31,374 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 90 for LOIs [2022-11-19 07:30:31,393 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 550 for LOIs [2022-11-19 07:30:34,235 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 821 for LOIs [2022-11-19 07:31:30,016 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 648 for LOIs [2022-11-19 07:31:30,801 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:31:49,672 WARN L233 SmtUtils]: Spent 10.50s on a formula simplification. DAG size of input: 648 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:00,620 WARN L233 SmtUtils]: Spent 10.53s on a formula simplification. DAG size of input: 688 DAG size of output: 529 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:09,728 WARN L233 SmtUtils]: Spent 8.73s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:18,773 WARN L233 SmtUtils]: Spent 8.67s on a formula simplification. DAG size of input: 669 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:32:40,827 WARN L233 SmtUtils]: Spent 21.47s on a formula simplification. DAG size of input: 821 DAG size of output: 675 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:13,641 WARN L233 SmtUtils]: Spent 30.91s on a formula simplification. DAG size of input: 973 DAG size of output: 680 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:33:28,561 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 558 DAG size of output: 553 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:24,054 WARN L233 SmtUtils]: Spent 12.08s on a formula simplification. DAG size of input: 506 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:37,038 WARN L233 SmtUtils]: Spent 12.18s on a formula simplification. DAG size of input: 508 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:34:49,746 WARN L233 SmtUtils]: Spent 11.89s on a formula simplification. DAG size of input: 511 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:00,412 WARN L233 SmtUtils]: Spent 9.16s on a formula simplification. DAG size of input: 438 DAG size of output: 427 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:10,626 WARN L233 SmtUtils]: Spent 9.46s on a formula simplification. DAG size of input: 442 DAG size of output: 431 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:23,155 WARN L233 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 520 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:34,448 WARN L233 SmtUtils]: Spent 10.42s on a formula simplification. DAG size of input: 520 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:47,021 WARN L233 SmtUtils]: Spent 11.71s on a formula simplification. DAG size of input: 523 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:35:57,987 WARN L233 SmtUtils]: Spent 10.10s on a formula simplification. DAG size of input: 526 DAG size of output: 472 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:09,592 WARN L233 SmtUtils]: Spent 10.76s on a formula simplification. DAG size of input: 532 DAG size of output: 478 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:20,921 WARN L233 SmtUtils]: Spent 10.39s on a formula simplification. DAG size of input: 548 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:20,927 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2121651667] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:36:20,927 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:36:20,927 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [11, 12, 12] total 84 [2022-11-19 07:36:20,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433027823] [2022-11-19 07:36:20,928 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:36:20,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-19 07:36:20,929 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:36:20,929 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-19 07:36:20,931 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=6404, Unknown=0, NotChecked=0, Total=6972 [2022-11-19 07:36:20,931 INFO L87 Difference]: Start difference. First operand 1167 states and 1820 transitions. Second operand has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-19 07:36:30,472 WARN L233 SmtUtils]: Spent 8.71s on a formula simplification. DAG size of input: 636 DAG size of output: 590 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:40,291 WARN L233 SmtUtils]: Spent 9.38s on a formula simplification. DAG size of input: 648 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:48,338 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 736 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:36:56,788 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 599 DAG size of output: 553 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:04,640 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 611 DAG size of output: 560 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:10,560 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 699 DAG size of output: 566 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:17,234 WARN L233 SmtUtils]: Spent 5.42s on a formula simplification. DAG size of input: 593 DAG size of output: 581 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:23,341 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 605 DAG size of output: 593 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:37:30,564 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 641 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:17,456 WARN L233 SmtUtils]: Spent 9.10s on a formula simplification. DAG size of input: 433 DAG size of output: 430 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:38:27,033 WARN L233 SmtUtils]: Spent 9.26s on a formula simplification. DAG size of input: 446 DAG size of output: 443 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:39:42,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:42,991 INFO L93 Difference]: Finished difference Result 2968 states and 4661 transitions. [2022-11-19 07:39:42,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-19 07:39:42,992 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 92 [2022-11-19 07:39:42,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:43,003 INFO L225 Difference]: With dead ends: 2968 [2022-11-19 07:39:43,003 INFO L226 Difference]: Without dead ends: 1824 [2022-11-19 07:39:43,009 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 376.4s TimeCoverageRelationStatistics Valid=710, Invalid=8410, Unknown=0, NotChecked=0, Total=9120 [2022-11-19 07:39:43,010 INFO L413 NwaCegarLoop]: 753 mSDtfsCounter, 950 mSDsluCounter, 11761 mSDsCounter, 0 mSdLazyCounter, 25522 mSolverCounterSat, 125 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 107.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 983 SdHoareTripleChecker+Valid, 12514 SdHoareTripleChecker+Invalid, 25647 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 125 IncrementalHoareTripleChecker+Valid, 25522 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 115.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:43,010 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [983 Valid, 12514 Invalid, 25647 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [125 Valid, 25522 Invalid, 0 Unknown, 0 Unchecked, 115.2s Time] [2022-11-19 07:39:43,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1824 states. [2022-11-19 07:39:43,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1824 to 1688. [2022-11-19 07:39:43,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1688 states, 1203 states have (on average 1.5261845386533666) internal successors, (1836), 1275 states have internal predecessors, (1836), 373 states have call successors, (373), 95 states have call predecessors, (373), 111 states have return successors, (408), 366 states have call predecessors, (408), 368 states have call successors, (408) [2022-11-19 07:39:43,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1688 states to 1688 states and 2617 transitions. [2022-11-19 07:39:43,592 INFO L78 Accepts]: Start accepts. Automaton has 1688 states and 2617 transitions. Word has length 92 [2022-11-19 07:39:43,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:43,592 INFO L495 AbstractCegarLoop]: Abstraction has 1688 states and 2617 transitions. [2022-11-19 07:39:43,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-19 07:39:43,593 INFO L276 IsEmpty]: Start isEmpty. Operand 1688 states and 2617 transitions. [2022-11-19 07:39:43,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:39:43,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:43,596 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:39:43,607 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:39:43,804 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:39:43,804 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:43,805 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:43,805 INFO L85 PathProgramCache]: Analyzing trace with hash 1529592686, now seen corresponding path program 1 times [2022-11-19 07:39:43,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:43,805 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492655054] [2022-11-19 07:39:43,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:43,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:43,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:44,320 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:39:44,321 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:44,321 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492655054] [2022-11-19 07:39:44,321 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492655054] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:44,321 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:44,321 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:39:44,322 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [440035188] [2022-11-19 07:39:44,322 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:44,322 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:39:44,323 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:44,323 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:39:44,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:39:44,324 INFO L87 Difference]: Start difference. First operand 1688 states and 2617 transitions. Second operand has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 07:39:47,548 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:47,548 INFO L93 Difference]: Finished difference Result 3356 states and 5334 transitions. [2022-11-19 07:39:47,549 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-19 07:39:47,549 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) Word has length 94 [2022-11-19 07:39:47,549 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:47,563 INFO L225 Difference]: With dead ends: 3356 [2022-11-19 07:39:47,563 INFO L226 Difference]: Without dead ends: 2472 [2022-11-19 07:39:47,568 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=54, Invalid=186, Unknown=0, NotChecked=0, Total=240 [2022-11-19 07:39:47,569 INFO L413 NwaCegarLoop]: 401 mSDtfsCounter, 914 mSDsluCounter, 1367 mSDsCounter, 0 mSdLazyCounter, 2978 mSolverCounterSat, 345 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 996 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 3323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 345 IncrementalHoareTripleChecker+Valid, 2978 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:47,569 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [996 Valid, 1768 Invalid, 3323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [345 Valid, 2978 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-11-19 07:39:47,572 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2472 states. [2022-11-19 07:39:48,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2472 to 2149. [2022-11-19 07:39:48,375 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2149 states, 1476 states have (on average 1.5237127371273713) internal successors, (2249), 1588 states have internal predecessors, (2249), 544 states have call successors, (544), 108 states have call predecessors, (544), 128 states have return successors, (591), 536 states have call predecessors, (591), 539 states have call successors, (591) [2022-11-19 07:39:48,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2149 states to 2149 states and 3384 transitions. [2022-11-19 07:39:48,385 INFO L78 Accepts]: Start accepts. Automaton has 2149 states and 3384 transitions. Word has length 94 [2022-11-19 07:39:48,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:48,386 INFO L495 AbstractCegarLoop]: Abstraction has 2149 states and 3384 transitions. [2022-11-19 07:39:48,386 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 6.75) internal successors, (54), 8 states have internal predecessors, (54), 6 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 7 states have call predecessors, (17), 5 states have call successors, (17) [2022-11-19 07:39:48,386 INFO L276 IsEmpty]: Start isEmpty. Operand 2149 states and 3384 transitions. [2022-11-19 07:39:48,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:39:48,389 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:48,389 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:39:48,389 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:39:48,389 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:48,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:48,390 INFO L85 PathProgramCache]: Analyzing trace with hash -934847287, now seen corresponding path program 1 times [2022-11-19 07:39:48,390 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:48,390 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1836083917] [2022-11-19 07:39:48,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:48,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:48,516 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:39:48,517 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:48,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1836083917] [2022-11-19 07:39:48,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1836083917] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:39:48,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:39:48,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:39:48,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1974678218] [2022-11-19 07:39:48,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:39:48,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:39:48,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:39:48,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:39:48,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:39:48,519 INFO L87 Difference]: Start difference. First operand 2149 states and 3384 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:39:50,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:39:50,108 INFO L93 Difference]: Finished difference Result 5878 states and 9355 transitions. [2022-11-19 07:39:50,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:39:50,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-11-19 07:39:50,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:39:50,128 INFO L225 Difference]: With dead ends: 5878 [2022-11-19 07:39:50,129 INFO L226 Difference]: Without dead ends: 4008 [2022-11-19 07:39:50,138 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:39:50,138 INFO L413 NwaCegarLoop]: 974 mSDtfsCounter, 492 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 88 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 492 SdHoareTripleChecker+Valid, 1461 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 88 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:39:50,139 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [492 Valid, 1461 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 88 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-19 07:39:50,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4008 states. [2022-11-19 07:39:51,652 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4008 to 4005. [2022-11-19 07:39:51,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4005 states, 2766 states have (on average 1.5314533622559654) internal successors, (4236), 2969 states have internal predecessors, (4236), 999 states have call successors, (999), 201 states have call predecessors, (999), 239 states have return successors, (1111), 990 states have call predecessors, (1111), 994 states have call successors, (1111) [2022-11-19 07:39:51,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4005 states to 4005 states and 6346 transitions. [2022-11-19 07:39:51,679 INFO L78 Accepts]: Start accepts. Automaton has 4005 states and 6346 transitions. Word has length 93 [2022-11-19 07:39:51,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:39:51,679 INFO L495 AbstractCegarLoop]: Abstraction has 4005 states and 6346 transitions. [2022-11-19 07:39:51,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-19 07:39:51,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4005 states and 6346 transitions. [2022-11-19 07:39:51,682 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:39:51,683 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:39:51,683 INFO L195 NwaCegarLoop]: trace histogram [3, 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] [2022-11-19 07:39:51,683 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:39:51,683 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:39:51,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:39:51,684 INFO L85 PathProgramCache]: Analyzing trace with hash 1191814703, now seen corresponding path program 1 times [2022-11-19 07:39:51,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:39:51,684 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [738230265] [2022-11-19 07:39:51,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:51,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:39:51,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:52,625 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:39:52,625 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:39:52,625 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [738230265] [2022-11-19 07:39:52,626 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [738230265] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:39:52,626 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [795810282] [2022-11-19 07:39:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:39:52,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:39:52,626 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:39:52,627 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:39:52,655 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_e63a61ee-792a-405f-9cd1-6cf823e71b1c/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:39:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:39:53,026 INFO L263 TraceCheckSpWp]: Trace formula consists of 1800 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-19 07:39:53,038 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:39:54,769 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:39:54,769 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:39:57,447 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:39:57,447 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [795810282] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:39:57,448 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [344769254] [2022-11-19 07:39:57,451 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-19 07:39:57,451 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:39:57,452 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:39:57,452 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:39:57,452 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:40:02,296 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 578 for LOIs [2022-11-19 07:40:53,082 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 578 for LOIs [2022-11-19 07:40:54,997 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 82 for LOIs [2022-11-19 07:40:55,432 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 25 for LOIs [2022-11-19 07:40:55,440 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 587 for LOIs [2022-11-19 07:40:58,905 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 432 for LOIs [2022-11-19 07:40:59,124 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 78 for LOIs [2022-11-19 07:40:59,224 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 90 for LOIs [2022-11-19 07:40:59,240 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 550 for LOIs [2022-11-19 07:41:01,618 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 821 for LOIs