./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/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_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/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_faf4ccfc-4b09-4255-87f8-596a321c87b5/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 e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- 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 07:12:15,443 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:12:15,446 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:12:15,493 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:12:15,495 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:12:15,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:12:15,503 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:12:15,507 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:12:15,513 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:12:15,514 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:12:15,517 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:12:15,522 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:12:15,523 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:12:15,528 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:12:15,531 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:12:15,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:12:15,536 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:12:15,545 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:12:15,547 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:12:15,549 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:12:15,551 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:12:15,552 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:12:15,554 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:12:15,555 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:12:15,559 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:12:15,560 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:12:15,560 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:12:15,561 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:12:15,562 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:12:15,563 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:12:15,563 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:12:15,565 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:12:15,565 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:12:15,566 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:12:15,568 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:12:15,568 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:12:15,569 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:12:15,570 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:12:15,570 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:12:15,571 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:12:15,572 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:12:15,573 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:12:15,598 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:12:15,599 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:12:15,599 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:12:15,600 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:12:15,601 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:12:15,601 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:12:15,601 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:12:15,602 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:12:15,602 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:12:15,602 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:12:15,603 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:12:15,603 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:12:15,603 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:12:15,604 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:12:15,604 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:12:15,604 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:12:15,605 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:12:15,605 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:12:15,606 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:12:15,606 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:12:15,607 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:12:15,607 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:12:15,607 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:12:15,608 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:12:15,608 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:12:15,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:12:15,609 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:12:15,609 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:12:15,609 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:12:15,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:12:15,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:12:15,610 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:12:15,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:12:15,611 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:12:15,611 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:12:15,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:12:15,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:12:15,612 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:12:15,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:12:15,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:12:15,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:12:15,613 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_faf4ccfc-4b09-4255-87f8-596a321c87b5/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2022-11-19 07:12:15,926 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:12:15,972 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:12:15,975 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:12:15,977 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:12:15,978 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:12:15,979 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-11-19 07:12:16,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/data/737607a5d/673b27208cc44cf6a21a305c3fc7f852/FLAG27396d72f [2022-11-19 07:12:16,929 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:12:16,930 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-11-19 07:12:16,956 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/data/737607a5d/673b27208cc44cf6a21a305c3fc7f852/FLAG27396d72f [2022-11-19 07:12:17,046 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/data/737607a5d/673b27208cc44cf6a21a305c3fc7f852 [2022-11-19 07:12:17,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:12:17,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:12:17,060 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:12:17,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:12:17,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:12:17,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:12:17" (1/1) ... [2022-11-19 07:12:17,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1843d770 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:17, skipping insertion in model container [2022-11-19 07:12:17,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:12:17" (1/1) ... [2022-11-19 07:12:17,079 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:12:17,156 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:12:17,452 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_faf4ccfc-4b09-4255-87f8-596a321c87b5/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2022-11-19 07:12:17,827 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:12:17,839 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:12:17,854 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_faf4ccfc-4b09-4255-87f8-596a321c87b5/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2022-11-19 07:12:17,996 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:12:18,036 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:12:18,037 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18 WrapperNode [2022-11-19 07:12:18,037 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:12:18,038 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:12:18,038 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:12:18,039 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:12:18,049 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,090 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,192 INFO L138 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 938 [2022-11-19 07:12:18,203 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:12:18,204 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:12:18,204 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:12:18,204 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:12:18,216 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,216 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,234 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,234 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,303 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,308 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,314 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,338 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:12:18,339 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:12:18,339 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:12:18,339 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:12:18,341 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (1/1) ... [2022-11-19 07:12:18,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:12:18,373 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:18,395 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:12:18,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:12:18,458 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-19 07:12:18,458 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-19 07:12:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-19 07:12:18,459 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-19 07:12:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:12:18,459 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:12:18,459 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:12:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:12:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-19 07:12:18,460 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-19 07:12:18,460 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:12:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:12:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:12:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:12:18,461 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:12:18,461 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:12:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-19 07:12:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-19 07:12:18,462 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-19 07:12:18,462 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-19 07:12:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:12:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:12:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:12:18,463 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:12:18,463 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:12:18,464 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:12:18,464 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:12:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-19 07:12:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-19 07:12:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-19 07:12:18,465 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-19 07:12:18,465 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-19 07:12:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-19 07:12:18,466 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-19 07:12:18,466 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-19 07:12:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:12:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:12:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:12:18,467 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:12:18,467 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:12:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:12:18,468 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:12:18,468 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:12:18,469 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:12:18,469 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:12:18,470 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:12:18,471 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:12:18,471 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:12:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:12:18,472 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:12:18,472 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:12:18,473 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:12:18,473 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:12:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:12:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:12:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:12:18,474 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:12:18,474 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:12:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:12:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:12:18,475 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-19 07:12:18,475 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-19 07:12:18,792 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:12:18,796 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:12:20,440 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:12:21,477 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:12:21,477 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-19 07:12:21,482 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:21 BoogieIcfgContainer [2022-11-19 07:12:21,482 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:12:21,485 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:12:21,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:12:21,490 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:12:21,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:12:17" (1/3) ... [2022-11-19 07:12:21,491 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb4209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:21, skipping insertion in model container [2022-11-19 07:12:21,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:12:18" (2/3) ... [2022-11-19 07:12:21,492 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eeb4209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:12:21, skipping insertion in model container [2022-11-19 07:12:21,492 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:12:21" (3/3) ... [2022-11-19 07:12:21,494 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2022-11-19 07:12:21,518 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:12:21,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:12:21,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:12:21,599 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;@352400d4, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:12:21,600 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:12:21,607 INFO L276 IsEmpty]: Start isEmpty. Operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-19 07:12:21,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-19 07:12:21,628 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:21,629 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:21,630 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:21,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:21,636 INFO L85 PathProgramCache]: Analyzing trace with hash -2089968167, now seen corresponding path program 1 times [2022-11-19 07:12:21,648 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:21,649 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1283712168] [2022-11-19 07:12:21,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:21,650 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:21,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:22,816 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 07:12:22,817 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:22,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1283712168] [2022-11-19 07:12:22,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1283712168] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:22,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:22,819 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-19 07:12:22,821 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1972438633] [2022-11-19 07:12:22,821 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:22,828 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-19 07:12:22,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:22,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-19 07:12:22,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-19 07:12:22,879 INFO L87 Difference]: Start difference. First operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:12:23,655 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:23,656 INFO L93 Difference]: Finished difference Result 1295 states and 2073 transitions. [2022-11-19 07:12:23,658 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-19 07:12:23,659 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2022-11-19 07:12:23,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:23,697 INFO L225 Difference]: With dead ends: 1295 [2022-11-19 07:12:23,699 INFO L226 Difference]: Without dead ends: 857 [2022-11-19 07:12:23,745 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 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 07:12:23,756 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 661 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:23,762 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1372 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:12:23,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-19 07:12:23,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 819. [2022-11-19 07:12:23,962 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 577 states have (on average 1.5701906412478337) internal successors, (906), 604 states have internal predecessors, (906), 192 states have call successors, (192), 52 states have call predecessors, (192), 49 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2022-11-19 07:12:23,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1293 transitions. [2022-11-19 07:12:23,978 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1293 transitions. Word has length 58 [2022-11-19 07:12:23,979 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:23,979 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1293 transitions. [2022-11-19 07:12:23,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-19 07:12:23,980 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1293 transitions. [2022-11-19 07:12:23,993 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:12:23,994 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:23,994 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:23,995 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:12:23,995 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:23,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:23,997 INFO L85 PathProgramCache]: Analyzing trace with hash -633536550, now seen corresponding path program 1 times [2022-11-19 07:12:23,997 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:23,997 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1335366264] [2022-11-19 07:12:23,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:23,998 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:24,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:24,642 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:12:24,643 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:24,643 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1335366264] [2022-11-19 07:12:24,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1335366264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:24,644 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:24,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-19 07:12:24,645 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [623111882] [2022-11-19 07:12:24,645 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:24,647 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:24,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:24,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:24,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:24,649 INFO L87 Difference]: Start difference. First operand 819 states and 1293 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:12:25,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:25,121 INFO L93 Difference]: Finished difference Result 2032 states and 3200 transitions. [2022-11-19 07:12:25,122 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:25,123 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 101 [2022-11-19 07:12:25,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:25,143 INFO L225 Difference]: With dead ends: 2032 [2022-11-19 07:12:25,143 INFO L226 Difference]: Without dead ends: 1228 [2022-11-19 07:12:25,155 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:25,157 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 520 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:25,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 2052 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:12:25,163 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-11-19 07:12:25,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1212. [2022-11-19 07:12:25,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 855 states have (on average 1.535672514619883) internal successors, (1313), 883 states have internal predecessors, (1313), 277 states have call successors, (277), 80 states have call predecessors, (277), 79 states have return successors, (305), 262 states have call predecessors, (305), 271 states have call successors, (305) [2022-11-19 07:12:25,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1895 transitions. [2022-11-19 07:12:25,307 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1895 transitions. Word has length 101 [2022-11-19 07:12:25,307 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:25,309 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1895 transitions. [2022-11-19 07:12:25,309 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-19 07:12:25,309 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1895 transitions. [2022-11-19 07:12:25,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:12:25,321 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:25,321 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:25,322 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:12:25,322 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:25,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:25,323 INFO L85 PathProgramCache]: Analyzing trace with hash -2057589460, now seen corresponding path program 1 times [2022-11-19 07:12:25,324 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:25,324 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2127847067] [2022-11-19 07:12:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:25,327 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:25,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:25,940 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-19 07:12:25,941 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:25,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2127847067] [2022-11-19 07:12:25,941 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2127847067] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:25,942 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:12:25,942 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:12:25,943 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [964767252] [2022-11-19 07:12:25,943 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:25,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:12:25,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:25,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:12:25,947 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:12:25,947 INFO L87 Difference]: Start difference. First operand 1212 states and 1895 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:12:30,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:30,319 INFO L93 Difference]: Finished difference Result 3553 states and 5608 transitions. [2022-11-19 07:12:30,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:12:30,320 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 102 [2022-11-19 07:12:30,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:30,351 INFO L225 Difference]: With dead ends: 3553 [2022-11-19 07:12:30,351 INFO L226 Difference]: Without dead ends: 2358 [2022-11-19 07:12:30,368 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 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 07:12:30,375 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1334 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1436 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:30,376 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1436 Valid, 1585 Invalid, 3955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-19 07:12:30,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-11-19 07:12:30,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2076. [2022-11-19 07:12:30,595 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1469 states have (on average 1.5466303607896528) internal successors, (2272), 1520 states have internal predecessors, (2272), 467 states have call successors, (467), 138 states have call predecessors, (467), 139 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-19 07:12:30,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3262 transitions. [2022-11-19 07:12:30,622 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3262 transitions. Word has length 102 [2022-11-19 07:12:30,623 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:30,623 INFO L495 AbstractCegarLoop]: Abstraction has 2076 states and 3262 transitions. [2022-11-19 07:12:30,623 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:12:30,623 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3262 transitions. [2022-11-19 07:12:30,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-19 07:12:30,635 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:30,636 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:30,636 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:12:30,636 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:30,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:30,638 INFO L85 PathProgramCache]: Analyzing trace with hash -668768586, now seen corresponding path program 1 times [2022-11-19 07:12:30,638 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:30,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [28816395] [2022-11-19 07:12:30,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:30,639 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:30,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:30,913 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:12:30,913 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:30,913 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [28816395] [2022-11-19 07:12:30,914 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [28816395] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:30,914 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260308300] [2022-11-19 07:12:30,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:30,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:30,916 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:30,927 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:30,970 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:12:31,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:31,452 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:31,468 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:31,570 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:12:31,582 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:31,583 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260308300] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:31,583 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:31,584 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-19 07:12:31,584 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1033505932] [2022-11-19 07:12:31,584 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:31,585 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:31,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:31,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:31,586 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:31,586 INFO L87 Difference]: Start difference. First operand 2076 states and 3262 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:32,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:32,033 INFO L93 Difference]: Finished difference Result 4173 states and 6654 transitions. [2022-11-19 07:12:32,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:32,034 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2022-11-19 07:12:32,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:32,053 INFO L225 Difference]: With dead ends: 4173 [2022-11-19 07:12:32,054 INFO L226 Difference]: Without dead ends: 2112 [2022-11-19 07:12:32,074 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:12:32,081 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 85 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:32,083 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1821 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:32,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-11-19 07:12:32,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2112. [2022-11-19 07:12:32,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1499 states have (on average 1.5396931287525017) internal successors, (2308), 1550 states have internal predecessors, (2308), 467 states have call successors, (467), 144 states have call predecessors, (467), 145 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-19 07:12:32,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3298 transitions. [2022-11-19 07:12:32,283 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3298 transitions. Word has length 106 [2022-11-19 07:12:32,285 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:32,285 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 3298 transitions. [2022-11-19 07:12:32,285 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:32,286 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3298 transitions. [2022-11-19 07:12:32,290 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:12:32,290 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:32,290 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:32,309 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:32,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:32,500 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:32,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:32,501 INFO L85 PathProgramCache]: Analyzing trace with hash 1652998317, now seen corresponding path program 1 times [2022-11-19 07:12:32,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:32,501 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2071119296] [2022-11-19 07:12:32,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:32,501 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:32,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:32,878 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:12:32,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2071119296] [2022-11-19 07:12:32,878 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2071119296] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:32,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [980828730] [2022-11-19 07:12:32,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:32,879 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:32,879 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:32,880 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:32,887 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:12:33,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:33,338 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:33,345 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:33,381 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:12:33,381 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:33,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [980828730] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:33,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:33,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-19 07:12:33,382 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967808911] [2022-11-19 07:12:33,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:33,383 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:33,383 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:33,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:33,384 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:12:33,384 INFO L87 Difference]: Start difference. First operand 2112 states and 3298 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:33,728 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:33,729 INFO L93 Difference]: Finished difference Result 4227 states and 6672 transitions. [2022-11-19 07:12:33,729 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:33,730 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2022-11-19 07:12:33,730 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:33,748 INFO L225 Difference]: With dead ends: 4227 [2022-11-19 07:12:33,748 INFO L226 Difference]: Without dead ends: 2106 [2022-11-19 07:12:33,766 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:33,769 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 91 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:33,770 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1817 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:33,773 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-11-19 07:12:33,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2022-11-19 07:12:33,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1493 states have (on average 1.5298057602143336) internal successors, (2284), 1544 states have internal predecessors, (2284), 467 states have call successors, (467), 144 states have call predecessors, (467), 145 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-19 07:12:33,977 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3274 transitions. [2022-11-19 07:12:33,978 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3274 transitions. Word has length 108 [2022-11-19 07:12:33,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:33,980 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 3274 transitions. [2022-11-19 07:12:33,980 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:33,981 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3274 transitions. [2022-11-19 07:12:33,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-19 07:12:33,986 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:33,986 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:33,995 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:34,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:34,195 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:34,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:34,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1521342151, now seen corresponding path program 1 times [2022-11-19 07:12:34,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:34,196 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [583744473] [2022-11-19 07:12:34,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:34,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:34,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:34,570 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:12:34,571 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:34,571 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [583744473] [2022-11-19 07:12:34,571 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [583744473] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:34,572 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1508603744] [2022-11-19 07:12:34,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:34,572 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:34,572 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:34,574 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:34,603 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-19 07:12:35,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:35,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:35,051 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:35,204 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:12:35,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:35,205 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1508603744] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:35,205 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:35,205 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:12:35,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [184010450] [2022-11-19 07:12:35,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:35,206 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:35,207 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:35,207 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:35,208 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:35,208 INFO L87 Difference]: Start difference. First operand 2106 states and 3274 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:36,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:36,867 INFO L93 Difference]: Finished difference Result 5379 states and 8626 transitions. [2022-11-19 07:12:36,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:12:36,869 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 109 [2022-11-19 07:12:36,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:36,906 INFO L225 Difference]: With dead ends: 5379 [2022-11-19 07:12:36,907 INFO L226 Difference]: Without dead ends: 3288 [2022-11-19 07:12:36,931 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:36,933 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 654 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 657 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:36,933 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [657 Valid, 2400 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-11-19 07:12:36,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2022-11-19 07:12:37,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3240. [2022-11-19 07:12:37,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2302 states have (on average 1.4813205907906168) internal successors, (3410), 2376 states have internal predecessors, (3410), 707 states have call successors, (707), 229 states have call predecessors, (707), 230 states have return successors, (913), 674 states have call predecessors, (913), 695 states have call successors, (913) [2022-11-19 07:12:37,273 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5030 transitions. [2022-11-19 07:12:37,275 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5030 transitions. Word has length 109 [2022-11-19 07:12:37,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:37,275 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5030 transitions. [2022-11-19 07:12:37,276 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:37,276 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5030 transitions. [2022-11-19 07:12:37,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-19 07:12:37,282 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:37,283 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:37,297 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:37,491 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-19 07:12:37,492 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:37,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:37,492 INFO L85 PathProgramCache]: Analyzing trace with hash 2038205392, now seen corresponding path program 1 times [2022-11-19 07:12:37,492 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:37,493 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1072678833] [2022-11-19 07:12:37,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:37,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:37,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:37,793 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:37,793 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1072678833] [2022-11-19 07:12:37,793 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1072678833] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:37,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1836193263] [2022-11-19 07:12:37,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:37,794 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:37,794 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:37,795 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:37,826 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-19 07:12:38,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:38,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:12:38,270 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:38,321 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:12:38,322 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:38,322 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1836193263] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:38,322 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:38,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:12:38,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1927935290] [2022-11-19 07:12:38,323 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:38,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:38,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:38,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:38,325 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:38,326 INFO L87 Difference]: Start difference. First operand 3240 states and 5030 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:38,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:38,803 INFO L93 Difference]: Finished difference Result 6591 states and 10553 transitions. [2022-11-19 07:12:38,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:12:38,804 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-19 07:12:38,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:38,833 INFO L225 Difference]: With dead ends: 6591 [2022-11-19 07:12:38,834 INFO L226 Difference]: Without dead ends: 3366 [2022-11-19 07:12:38,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:38,858 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 2 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:38,858 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2581 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:38,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2022-11-19 07:12:39,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3304. [2022-11-19 07:12:39,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 2356 states have (on average 1.470288624787776) internal successors, (3464), 2418 states have internal predecessors, (3464), 707 states have call successors, (707), 229 states have call predecessors, (707), 240 states have return successors, (952), 696 states have call predecessors, (952), 695 states have call successors, (952) [2022-11-19 07:12:39,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 5123 transitions. [2022-11-19 07:12:39,154 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 5123 transitions. Word has length 110 [2022-11-19 07:12:39,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:39,156 INFO L495 AbstractCegarLoop]: Abstraction has 3304 states and 5123 transitions. [2022-11-19 07:12:39,160 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:39,161 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 5123 transitions. [2022-11-19 07:12:39,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-19 07:12:39,165 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:39,165 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:39,174 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:39,374 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:39,374 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:39,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:39,375 INFO L85 PathProgramCache]: Analyzing trace with hash 1335703100, now seen corresponding path program 1 times [2022-11-19 07:12:39,375 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:39,375 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [897602054] [2022-11-19 07:12:39,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:39,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:39,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:39,801 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:12:39,801 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [897602054] [2022-11-19 07:12:39,801 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [897602054] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:39,801 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [581350809] [2022-11-19 07:12:39,801 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:39,802 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:39,802 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:39,803 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:39,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-19 07:12:40,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:40,273 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-19 07:12:40,279 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:40,489 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-19 07:12:40,490 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:40,490 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [581350809] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:40,490 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:40,490 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-19 07:12:40,490 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881638135] [2022-11-19 07:12:40,491 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:40,491 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:12:40,491 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:40,492 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:12:40,492 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:12:40,492 INFO L87 Difference]: Start difference. First operand 3304 states and 5123 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:41,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:41,960 INFO L93 Difference]: Finished difference Result 7434 states and 11689 transitions. [2022-11-19 07:12:41,961 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:12:41,961 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 110 [2022-11-19 07:12:41,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:41,999 INFO L225 Difference]: With dead ends: 7434 [2022-11-19 07:12:42,000 INFO L226 Difference]: Without dead ends: 4145 [2022-11-19 07:12:42,024 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-19 07:12:42,025 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 785 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 786 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:42,026 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [786 Valid, 3860 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-19 07:12:42,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-11-19 07:12:42,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4057. [2022-11-19 07:12:42,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 2925 states have (on average 1.4560683760683761) internal successors, (4259), 2999 states have internal predecessors, (4259), 800 states have call successors, (800), 309 states have call predecessors, (800), 331 states have return successors, (1318), 788 states have call predecessors, (1318), 780 states have call successors, (1318) [2022-11-19 07:12:42,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6377 transitions. [2022-11-19 07:12:42,469 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6377 transitions. Word has length 110 [2022-11-19 07:12:42,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:42,470 INFO L495 AbstractCegarLoop]: Abstraction has 4057 states and 6377 transitions. [2022-11-19 07:12:42,471 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:42,471 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6377 transitions. [2022-11-19 07:12:42,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-19 07:12:42,477 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:42,477 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:42,492 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:42,686 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-19 07:12:42,687 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:42,687 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:42,687 INFO L85 PathProgramCache]: Analyzing trace with hash 1549143828, now seen corresponding path program 1 times [2022-11-19 07:12:42,687 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:42,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [742299168] [2022-11-19 07:12:42,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:42,688 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:42,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:43,107 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:43,107 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:43,107 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [742299168] [2022-11-19 07:12:43,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [742299168] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:43,108 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1673304406] [2022-11-19 07:12:43,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:43,108 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:43,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:43,110 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:43,134 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-19 07:12:43,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:43,579 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:43,583 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:43,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-19 07:12:43,641 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:43,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1673304406] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:43,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:43,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-19 07:12:43,642 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611964575] [2022-11-19 07:12:43,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:43,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:43,643 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:43,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:43,648 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:12:43,649 INFO L87 Difference]: Start difference. First operand 4057 states and 6377 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:44,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:44,330 INFO L93 Difference]: Finished difference Result 8324 states and 13441 transitions. [2022-11-19 07:12:44,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:44,331 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-11-19 07:12:44,332 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:44,379 INFO L225 Difference]: With dead ends: 8324 [2022-11-19 07:12:44,380 INFO L226 Difference]: Without dead ends: 4291 [2022-11-19 07:12:44,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:12:44,422 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 19 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:44,422 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1777 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:12:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2022-11-19 07:12:44,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4237. [2022-11-19 07:12:44,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 3105 states have (on average 1.4663446054750402) internal successors, (4553), 3179 states have internal predecessors, (4553), 800 states have call successors, (800), 309 states have call predecessors, (800), 331 states have return successors, (1318), 788 states have call predecessors, (1318), 780 states have call successors, (1318) [2022-11-19 07:12:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 6671 transitions. [2022-11-19 07:12:44,903 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 6671 transitions. Word has length 112 [2022-11-19 07:12:44,904 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:44,904 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 6671 transitions. [2022-11-19 07:12:44,904 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:44,905 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 6671 transitions. [2022-11-19 07:12:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:12:44,909 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:44,909 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:44,918 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-11-19 07:12:45,118 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:45,118 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:45,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:45,119 INFO L85 PathProgramCache]: Analyzing trace with hash 2100745002, now seen corresponding path program 1 times [2022-11-19 07:12:45,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:45,119 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227260316] [2022-11-19 07:12:45,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:45,119 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:45,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:45,408 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:45,408 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227260316] [2022-11-19 07:12:45,409 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227260316] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:45,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1485079135] [2022-11-19 07:12:45,409 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:45,409 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:45,410 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:45,411 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:45,440 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-19 07:12:45,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:45,875 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:45,881 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:45,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:12:45,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:45,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1485079135] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:45,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:45,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:12:45,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1826924094] [2022-11-19 07:12:45,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:45,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:45,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:45,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:45,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:45,956 INFO L87 Difference]: Start difference. First operand 4237 states and 6671 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:47,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:47,827 INFO L93 Difference]: Finished difference Result 10658 states and 17887 transitions. [2022-11-19 07:12:47,827 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:12:47,828 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 114 [2022-11-19 07:12:47,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:47,903 INFO L225 Difference]: With dead ends: 10658 [2022-11-19 07:12:47,903 INFO L226 Difference]: Without dead ends: 7268 [2022-11-19 07:12:47,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:47,949 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 662 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 664 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:47,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [664 Valid, 2465 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:12:47,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2022-11-19 07:12:48,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 7119. [2022-11-19 07:12:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7119 states, 5232 states have (on average 1.4608180428134556) internal successors, (7643), 5351 states have internal predecessors, (7643), 1328 states have call successors, (1328), 524 states have call predecessors, (1328), 558 states have return successors, (2716), 1309 states have call predecessors, (2716), 1294 states have call successors, (2716) [2022-11-19 07:12:48,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 11687 transitions. [2022-11-19 07:12:48,807 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 11687 transitions. Word has length 114 [2022-11-19 07:12:48,810 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:48,810 INFO L495 AbstractCegarLoop]: Abstraction has 7119 states and 11687 transitions. [2022-11-19 07:12:48,811 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:48,811 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 11687 transitions. [2022-11-19 07:12:48,818 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-19 07:12:48,818 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:48,819 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:12:48,837 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:49,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-19 07:12:49,028 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:49,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:49,028 INFO L85 PathProgramCache]: Analyzing trace with hash -164560108, now seen corresponding path program 1 times [2022-11-19 07:12:49,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1820780195] [2022-11-19 07:12:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:49,029 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:49,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:49,286 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:49,287 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1820780195] [2022-11-19 07:12:49,287 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1820780195] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:49,287 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1017238280] [2022-11-19 07:12:49,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:49,288 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:49,288 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:49,289 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:49,299 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-19 07:12:49,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:49,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-19 07:12:49,745 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-19 07:12:49,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:49,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1017238280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:49,770 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:49,770 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-19 07:12:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236444351] [2022-11-19 07:12:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:49,771 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-19 07:12:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-19 07:12:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:49,773 INFO L87 Difference]: Start difference. First operand 7119 states and 11687 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:50,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:50,504 INFO L93 Difference]: Finished difference Result 14426 states and 24645 transitions. [2022-11-19 07:12:50,504 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-19 07:12:50,505 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2022-11-19 07:12:50,505 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:50,564 INFO L225 Difference]: With dead ends: 14426 [2022-11-19 07:12:50,565 INFO L226 Difference]: Without dead ends: 7331 [2022-11-19 07:12:50,729 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-19 07:12:50,730 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 4 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:50,730 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1903 Invalid, 151 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:12:50,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2022-11-19 07:12:51,305 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 7151. [2022-11-19 07:12:51,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 5264 states have (on average 1.4466185410334347) internal successors, (7615), 5383 states have internal predecessors, (7615), 1328 states have call successors, (1328), 524 states have call predecessors, (1328), 558 states have return successors, (2716), 1309 states have call predecessors, (2716), 1294 states have call successors, (2716) [2022-11-19 07:12:51,398 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 11659 transitions. [2022-11-19 07:12:51,400 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 11659 transitions. Word has length 114 [2022-11-19 07:12:51,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:51,401 INFO L495 AbstractCegarLoop]: Abstraction has 7151 states and 11659 transitions. [2022-11-19 07:12:51,401 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-19 07:12:51,402 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 11659 transitions. [2022-11-19 07:12:51,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-19 07:12:51,407 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:51,407 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:51,429 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:51,625 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:51,625 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:51,626 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:51,626 INFO L85 PathProgramCache]: Analyzing trace with hash -251814407, now seen corresponding path program 1 times [2022-11-19 07:12:51,626 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:51,626 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [610236993] [2022-11-19 07:12:51,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:51,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:51,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:51,994 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:51,994 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:51,994 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [610236993] [2022-11-19 07:12:51,995 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [610236993] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:51,995 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [695844679] [2022-11-19 07:12:51,995 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:51,995 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:51,996 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:51,997 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:52,033 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-19 07:12:52,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:52,465 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:52,470 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:52,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:12:52,540 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:52,541 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [695844679] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:52,541 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:52,541 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:12:52,541 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941397392] [2022-11-19 07:12:52,542 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:52,542 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:52,542 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:52,543 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:52,543 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:52,543 INFO L87 Difference]: Start difference. First operand 7151 states and 11659 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:54,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:54,629 INFO L93 Difference]: Finished difference Result 16422 states and 28187 transitions. [2022-11-19 07:12:54,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:12:54,630 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 115 [2022-11-19 07:12:54,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:54,727 INFO L225 Difference]: With dead ends: 16422 [2022-11-19 07:12:54,727 INFO L226 Difference]: Without dead ends: 10158 [2022-11-19 07:12:54,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:54,823 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 695 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 697 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:54,824 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [697 Valid, 2219 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2022-11-19 07:12:54,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2022-11-19 07:12:55,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10026. [2022-11-19 07:12:55,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7384 states have (on average 1.4442036836403034) internal successors, (10664), 7548 states have internal predecessors, (10664), 1856 states have call successors, (1856), 739 states have call predecessors, (1856), 785 states have return successors, (4476), 1830 states have call predecessors, (4476), 1808 states have call successors, (4476) [2022-11-19 07:12:56,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16996 transitions. [2022-11-19 07:12:56,018 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16996 transitions. Word has length 115 [2022-11-19 07:12:56,019 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:12:56,019 INFO L495 AbstractCegarLoop]: Abstraction has 10026 states and 16996 transitions. [2022-11-19 07:12:56,020 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:56,020 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16996 transitions. [2022-11-19 07:12:56,025 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-19 07:12:56,026 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:12:56,026 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:12:56,041 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-19 07:12:56,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-19 07:12:56,236 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:12:56,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:12:56,236 INFO L85 PathProgramCache]: Analyzing trace with hash 927561536, now seen corresponding path program 1 times [2022-11-19 07:12:56,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:12:56,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956895349] [2022-11-19 07:12:56,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:56,237 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:12:56,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:56,529 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:12:56,529 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:12:56,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956895349] [2022-11-19 07:12:56,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956895349] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:12:56,530 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158446429] [2022-11-19 07:12:56,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:12:56,530 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:12:56,531 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:12:56,532 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:12:56,559 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-19 07:12:56,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:12:56,993 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-19 07:12:56,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:12:57,081 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:12:57,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:12:57,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158446429] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:12:57,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:12:57,082 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-19 07:12:57,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832492632] [2022-11-19 07:12:57,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:12:57,083 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:12:57,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:12:57,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:12:57,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:12:57,085 INFO L87 Difference]: Start difference. First operand 10026 states and 16996 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:12:59,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:12:59,159 INFO L93 Difference]: Finished difference Result 21594 states and 37880 transitions. [2022-11-19 07:12:59,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:12:59,160 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2022-11-19 07:12:59,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:12:59,267 INFO L225 Difference]: With dead ends: 21594 [2022-11-19 07:12:59,267 INFO L226 Difference]: Without dead ends: 12491 [2022-11-19 07:12:59,395 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:12:59,396 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 716 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 718 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-19 07:12:59,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [718 Valid, 2164 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-19 07:12:59,415 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-11-19 07:13:00,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12060. [2022-11-19 07:13:00,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12060 states, 8802 states have (on average 1.442853896841627) internal successors, (12700), 9014 states have internal predecessors, (12700), 2302 states have call successors, (2302), 915 states have call predecessors, (2302), 955 states have return successors, (5911), 2248 states have call predecessors, (5911), 2244 states have call successors, (5911) [2022-11-19 07:13:00,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12060 states to 12060 states and 20913 transitions. [2022-11-19 07:13:00,603 INFO L78 Accepts]: Start accepts. Automaton has 12060 states and 20913 transitions. Word has length 116 [2022-11-19 07:13:00,604 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:13:00,604 INFO L495 AbstractCegarLoop]: Abstraction has 12060 states and 20913 transitions. [2022-11-19 07:13:00,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-19 07:13:00,604 INFO L276 IsEmpty]: Start isEmpty. Operand 12060 states and 20913 transitions. [2022-11-19 07:13:00,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-19 07:13:00,622 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:13:00,622 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:13:00,640 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-19 07:13:00,830 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-19 07:13:00,831 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:13:00,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:13:00,831 INFO L85 PathProgramCache]: Analyzing trace with hash -2008148255, now seen corresponding path program 1 times [2022-11-19 07:13:00,831 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:13:00,831 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002746912] [2022-11-19 07:13:00,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:00,832 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:13:00,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:01,078 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 07:13:01,079 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:13:01,079 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002746912] [2022-11-19 07:13:01,080 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002746912] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:13:01,080 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [85286108] [2022-11-19 07:13:01,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:13:01,081 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:13:01,081 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:13:01,083 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:13:01,110 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-19 07:13:01,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:13:01,772 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:13:01,778 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:13:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:13:01,909 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:13:02,293 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:13:02,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [85286108] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:13:02,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1375544386] [2022-11-19 07:13:02,324 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2022-11-19 07:13:02,324 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:13:02,329 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:13:02,337 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:13:02,337 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:13:10,393 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-19 07:13:17,066 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 580 for LOIs [2022-11-19 07:13:31,182 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 455 for LOIs [2022-11-19 07:13:34,695 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 510 for LOIs [2022-11-19 07:13:38,147 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 512 for LOIs [2022-11-19 07:13:38,654 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 509 for LOIs [2022-11-19 07:13:39,131 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 44 for LOIs [2022-11-19 07:13:39,159 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 460 for LOIs [2022-11-19 07:13:40,548 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 456 for LOIs [2022-11-19 07:13:40,662 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-19 07:13:40,763 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2022-11-19 07:13:44,416 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 800 for LOIs [2022-11-19 07:14:23,008 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 649 for LOIs [2022-11-19 07:14:23,710 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:14:29,396 WARN L233 SmtUtils]: Spent 5.55s on a formula simplification. DAG size of input: 522 DAG size of output: 517 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:43,788 WARN L233 SmtUtils]: Spent 13.94s on a formula simplification. DAG size of input: 649 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:58,260 WARN L233 SmtUtils]: Spent 14.17s on a formula simplification. DAG size of input: 689 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:04,140 WARN L233 SmtUtils]: Spent 5.66s on a formula simplification. DAG size of input: 523 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:09,918 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 523 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:28,958 WARN L233 SmtUtils]: Spent 18.67s on a formula simplification. DAG size of input: 800 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:51,722 WARN L233 SmtUtils]: Spent 21.77s on a formula simplification. DAG size of input: 897 DAG size of output: 776 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:04,790 WARN L233 SmtUtils]: Spent 5.41s on a formula simplification. DAG size of input: 554 DAG size of output: 551 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:10,462 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 554 DAG size of output: 551 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:33,193 WARN L233 SmtUtils]: Spent 7.22s on a formula simplification. DAG size of input: 624 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:40,971 WARN L233 SmtUtils]: Spent 7.31s on a formula simplification. DAG size of input: 631 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:48,543 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 580 DAG size of output: 579 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:01,683 WARN L233 SmtUtils]: Spent 12.57s on a formula simplification. DAG size of input: 510 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:14,878 WARN L233 SmtUtils]: Spent 12.60s on a formula simplification. DAG size of input: 512 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:28,175 WARN L233 SmtUtils]: Spent 12.68s on a formula simplification. DAG size of input: 552 DAG size of output: 460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:36,817 WARN L233 SmtUtils]: Spent 7.36s on a formula simplification. DAG size of input: 620 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:44,776 WARN L233 SmtUtils]: Spent 7.38s on a formula simplification. DAG size of input: 620 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:52,645 WARN L233 SmtUtils]: Spent 7.27s on a formula simplification. DAG size of input: 622 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:01,046 WARN L233 SmtUtils]: Spent 7.14s on a formula simplification. DAG size of input: 513 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:09,105 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 626 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:17,240 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 624 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:25,481 WARN L233 SmtUtils]: Spent 7.54s on a formula simplification. DAG size of input: 630 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:33,928 WARN L233 SmtUtils]: Spent 7.72s on a formula simplification. DAG size of input: 635 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:18:42,272 WARN L233 SmtUtils]: Spent 7.66s on a formula simplification. DAG size of input: 631 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:28,496 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:19:37,251 WARN L233 SmtUtils]: Spent 7.93s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:21,457 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1375544386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:20:21,458 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:20:21,458 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [5, 6, 7] total 74 [2022-11-19 07:20:21,459 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1452658330] [2022-11-19 07:20:21,459 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:20:21,459 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-19 07:20:21,459 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:20:21,460 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-19 07:20:21,462 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4939, Unknown=0, NotChecked=0, Total=5402 [2022-11-19 07:20:21,463 INFO L87 Difference]: Start difference. First operand 12060 states and 20913 transitions. Second operand has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-19 07:20:31,467 WARN L233 SmtUtils]: Spent 8.12s on a formula simplification. DAG size of input: 591 DAG size of output: 551 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:40,176 WARN L233 SmtUtils]: Spent 8.22s on a formula simplification. DAG size of input: 603 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:20:50,963 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 592 DAG size of output: 553 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:04,604 WARN L233 SmtUtils]: Spent 13.04s on a formula simplification. DAG size of input: 776 DAG size of output: 566 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:12,574 WARN L233 SmtUtils]: Spent 6.80s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:24,269 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 604 DAG size of output: 581 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:34,843 WARN L233 SmtUtils]: Spent 10.00s on a formula simplification. DAG size of input: 610 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:42,478 WARN L233 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 609 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:21:50,872 WARN L233 SmtUtils]: Spent 6.69s on a formula simplification. DAG size of input: 638 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:22:07,814 WARN L233 SmtUtils]: Spent 11.92s on a formula simplification. DAG size of input: 467 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:22:33,582 WARN L233 SmtUtils]: Spent 7.78s on a formula simplification. DAG size of input: 631 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:23:28,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:28,521 INFO L93 Difference]: Finished difference Result 24486 states and 42387 transitions. [2022-11-19 07:23:28,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-19 07:23:28,522 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 117 [2022-11-19 07:23:28,522 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:28,633 INFO L225 Difference]: With dead ends: 24486 [2022-11-19 07:23:28,634 INFO L226 Difference]: Without dead ends: 12449 [2022-11-19 07:23:28,793 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 273 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 461.3s TimeCoverageRelationStatistics Valid=558, Invalid=6582, Unknown=0, NotChecked=0, Total=7140 [2022-11-19 07:23:28,793 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 660 mSDsluCounter, 7320 mSDsCounter, 0 mSdLazyCounter, 13319 mSolverCounterSat, 199 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 76.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 693 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 13518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 199 IncrementalHoareTripleChecker+Valid, 13319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:28,794 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [693 Valid, 7872 Invalid, 13518 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [199 Valid, 13319 Invalid, 0 Unknown, 0 Unchecked, 81.7s Time] [2022-11-19 07:23:28,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-11-19 07:23:30,422 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12372. [2022-11-19 07:23:30,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 9041 states have (on average 1.4398849684769384) internal successors, (13018), 9257 states have internal predecessors, (13018), 2345 states have call successors, (2345), 936 states have call predecessors, (2345), 985 states have return successors, (5969), 2296 states have call predecessors, (5969), 2287 states have call successors, (5969) [2022-11-19 07:23:30,608 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 21332 transitions. [2022-11-19 07:23:30,613 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 21332 transitions. Word has length 117 [2022-11-19 07:23:30,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:30,614 INFO L495 AbstractCegarLoop]: Abstraction has 12372 states and 21332 transitions. [2022-11-19 07:23:30,615 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-19 07:23:30,615 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 21332 transitions. [2022-11-19 07:23:30,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:23:30,623 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:30,624 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:30,639 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:30,833 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:30,834 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:30,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:30,835 INFO L85 PathProgramCache]: Analyzing trace with hash 489427958, now seen corresponding path program 1 times [2022-11-19 07:23:30,836 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:30,836 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399298218] [2022-11-19 07:23:30,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:30,836 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:30,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:31,380 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-19 07:23:31,380 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:31,381 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399298218] [2022-11-19 07:23:31,381 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399298218] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:31,381 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:23:31,381 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-19 07:23:31,381 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513632465] [2022-11-19 07:23:31,382 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:31,382 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-19 07:23:31,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:31,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-19 07:23:31,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:23:31,383 INFO L87 Difference]: Start difference. First operand 12372 states and 21332 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 07:23:38,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:38,988 INFO L93 Difference]: Finished difference Result 28470 states and 53678 transitions. [2022-11-19 07:23:38,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-19 07:23:38,989 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 122 [2022-11-19 07:23:38,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:39,131 INFO L225 Difference]: With dead ends: 28470 [2022-11-19 07:23:39,131 INFO L226 Difference]: Without dead ends: 16792 [2022-11-19 07:23:39,253 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-19 07:23:39,255 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1622 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 6344 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 6344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:39,256 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3070 Invalid, 6976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [632 Valid, 6344 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 07:23:39,273 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16792 states. [2022-11-19 07:23:41,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16792 to 13521. [2022-11-19 07:23:41,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 9896 states have (on average 1.4386620856911883) internal successors, (14237), 10119 states have internal predecessors, (14237), 2512 states have call successors, (2512), 1010 states have call predecessors, (2512), 1112 states have return successors, (6541), 2508 states have call predecessors, (6541), 2454 states have call successors, (6541) [2022-11-19 07:23:41,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 23290 transitions. [2022-11-19 07:23:41,174 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 23290 transitions. Word has length 122 [2022-11-19 07:23:41,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:41,175 INFO L495 AbstractCegarLoop]: Abstraction has 13521 states and 23290 transitions. [2022-11-19 07:23:41,175 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-19 07:23:41,175 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 23290 transitions. [2022-11-19 07:23:41,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-19 07:23:41,184 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:41,184 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:41,185 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-19 07:23:41,185 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:41,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:41,186 INFO L85 PathProgramCache]: Analyzing trace with hash -363255232, now seen corresponding path program 1 times [2022-11-19 07:23:41,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:41,186 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1422552363] [2022-11-19 07:23:41,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:41,187 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:41,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:41,450 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-19 07:23:41,451 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1422552363] [2022-11-19 07:23:41,451 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1422552363] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:23:41,451 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1903482116] [2022-11-19 07:23:41,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:41,452 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:41,452 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:41,453 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:41,490 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-19 07:23:41,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:41,893 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-19 07:23:41,899 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:41,963 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-19 07:23:41,963 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-19 07:23:41,963 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1903482116] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:23:41,964 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-19 07:23:41,964 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-19 07:23:41,964 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [557738475] [2022-11-19 07:23:41,964 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:23:41,965 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:23:41,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:23:41,965 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:23:41,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-19 07:23:41,966 INFO L87 Difference]: Start difference. First operand 13521 states and 23290 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:23:44,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:23:44,464 INFO L93 Difference]: Finished difference Result 27626 states and 49668 transitions. [2022-11-19 07:23:44,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:23:44,465 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-11-19 07:23:44,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:23:44,587 INFO L225 Difference]: With dead ends: 27626 [2022-11-19 07:23:44,587 INFO L226 Difference]: Without dead ends: 14958 [2022-11-19 07:23:44,787 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:23:44,788 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 119 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:23:44,789 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 4191 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-19 07:23:44,806 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14958 states. [2022-11-19 07:23:46,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14958 to 13674. [2022-11-19 07:23:46,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13674 states, 10017 states have (on average 1.433363282419886) internal successors, (14358), 10253 states have internal predecessors, (14358), 2512 states have call successors, (2512), 1010 states have call predecessors, (2512), 1144 states have return successors, (6604), 2527 states have call predecessors, (6604), 2454 states have call successors, (6604) [2022-11-19 07:23:46,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13674 states to 13674 states and 23474 transitions. [2022-11-19 07:23:46,536 INFO L78 Accepts]: Start accepts. Automaton has 13674 states and 23474 transitions. Word has length 124 [2022-11-19 07:23:46,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:23:46,537 INFO L495 AbstractCegarLoop]: Abstraction has 13674 states and 23474 transitions. [2022-11-19 07:23:46,538 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-19 07:23:46,538 INFO L276 IsEmpty]: Start isEmpty. Operand 13674 states and 23474 transitions. [2022-11-19 07:23:46,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-19 07:23:46,547 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:23:46,547 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:23:46,564 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-19 07:23:46,756 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-19 07:23:46,757 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:23:46,757 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:23:46,757 INFO L85 PathProgramCache]: Analyzing trace with hash 1452408900, now seen corresponding path program 1 times [2022-11-19 07:23:46,757 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:23:46,757 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1958501762] [2022-11-19 07:23:46,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:46,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:23:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:47,139 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-19 07:23:47,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:23:47,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1958501762] [2022-11-19 07:23:47,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1958501762] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:23:47,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2055874088] [2022-11-19 07:23:47,141 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:23:47,141 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:23:47,141 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:23:47,142 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:23:47,174 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_faf4ccfc-4b09-4255-87f8-596a321c87b5/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-19 07:23:47,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:23:47,595 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-19 07:23:47,601 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:23:47,733 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-19 07:23:47,734 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:23:48,037 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-19 07:23:48,038 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2055874088] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:23:48,038 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [62423889] [2022-11-19 07:23:48,042 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2022-11-19 07:23:48,043 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:23:48,044 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:23:48,044 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:23:48,044 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:23:54,533 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-19 07:24:09,572 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-11-19 07:24:22,348 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 453 for LOIs [2022-11-19 07:24:25,753 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 509 for LOIs [2022-11-19 07:24:28,774 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 511 for LOIs [2022-11-19 07:24:29,187 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 49 for LOIs [2022-11-19 07:24:29,190 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 509 for LOIs [2022-11-19 07:24:29,608 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 32 for LOIs [2022-11-19 07:24:29,944 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 460 for LOIs [2022-11-19 07:24:31,269 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2022-11-19 07:24:31,373 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 56 for LOIs [2022-11-19 07:24:31,384 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2022-11-19 07:24:34,962 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 800 for LOIs [2022-11-19 07:24:54,911 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 649 for LOIs [2022-11-19 07:24:55,492 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:25:12,147 WARN L233 SmtUtils]: Spent 11.52s on a formula simplification. DAG size of input: 649 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:24,195 WARN L233 SmtUtils]: Spent 11.79s on a formula simplification. DAG size of input: 689 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:25:29,725 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 523 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)