./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.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_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/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_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/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_9c445865-b14b-497f-b442-408f5304d309/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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- 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 07:07:12,610 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:07:12,613 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:07:12,662 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:07:12,663 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:07:12,668 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:07:12,670 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:07:12,674 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:07:12,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:07:12,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:07:12,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:07:12,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:07:12,690 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:07:12,693 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:07:12,695 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:07:12,696 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:07:12,698 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:07:12,700 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:07:12,702 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:07:12,708 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:07:12,711 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:07:12,712 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:07:12,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:07:12,717 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:07:12,728 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:07:12,729 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:07:12,730 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:07:12,732 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:07:12,733 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:07:12,734 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:07:12,735 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:07:12,736 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:07:12,738 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:07:12,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:07:12,743 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:07:12,743 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:07:12,744 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:07:12,744 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:07:12,745 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:07:12,746 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:07:12,747 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:07:12,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:07:12,795 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:07:12,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:07:12,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:07:12,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:07:12,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:07:12,799 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:07:12,799 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:07:12,799 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:07:12,800 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:07:12,800 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:07:12,801 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:07:12,802 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:07:12,802 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:07:12,802 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:07:12,802 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:07:12,803 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:07:12,803 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:07:12,803 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:07:12,804 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:07:12,805 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:07:12,805 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:07:12,805 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:07:12,806 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:07:12,807 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:07:12,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:07:12,809 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:07:12,809 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:07:12,809 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:07:12,810 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:07:12,810 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:07:12,810 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:07:12,811 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:07:12,811 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:12,812 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:07:12,812 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:07:12,812 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:07:12,813 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:07:12,813 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:07:12,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:07:12,813 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:07:12,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:07:12,814 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_9c445865-b14b-497f-b442-408f5304d309/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2022-11-19 07:07:13,220 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:07:13,260 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:07:13,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:07:13,273 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:07:13,274 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:07:13,277 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-11-19 07:07:13,384 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/data/a993d737b/33d757e5b7ff4e8f94b5868d8d968b4d/FLAGe6958fe39 [2022-11-19 07:07:14,139 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:07:14,140 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-11-19 07:07:14,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/data/a993d737b/33d757e5b7ff4e8f94b5868d8d968b4d/FLAGe6958fe39 [2022-11-19 07:07:14,306 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/data/a993d737b/33d757e5b7ff4e8f94b5868d8d968b4d [2022-11-19 07:07:14,310 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:07:14,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:07:14,313 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:14,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:07:14,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:07:14,319 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:14" (1/1) ... [2022-11-19 07:07:14,320 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5ddf400a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:14, skipping insertion in model container [2022-11-19 07:07:14,320 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:07:14" (1/1) ... [2022-11-19 07:07:14,329 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:07:14,395 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:07:15,026 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_9c445865-b14b-497f-b442-408f5304d309/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2022-11-19 07:07:15,037 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:15,048 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:07:15,154 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_9c445865-b14b-497f-b442-408f5304d309/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2022-11-19 07:07:15,161 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:07:15,185 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:07:15,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15 WrapperNode [2022-11-19 07:07:15,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:07:15,187 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:15,188 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:07:15,188 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:07:15,196 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,237 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,314 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 850 [2022-11-19 07:07:15,315 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:07:15,316 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:07:15,316 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:07:15,316 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:07:15,336 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,336 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,343 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,363 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,385 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,389 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,399 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,407 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:07:15,408 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:07:15,408 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:07:15,408 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:07:15,427 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (1/1) ... [2022-11-19 07:07:15,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:07:15,448 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:15,477 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:07:15,510 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:07:15,530 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:07:15,531 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:07:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:07:15,531 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-19 07:07:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-19 07:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-19 07:07:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-19 07:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:07:15,532 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:07:15,532 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:07:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:07:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:07:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:07:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:07:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:07:15,533 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:07:15,533 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:07:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-19 07:07:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-19 07:07:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:07:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:07:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:07:15,534 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:07:15,534 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:07:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:07:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:07:15,535 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:07:15,535 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-19 07:07:15,536 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-19 07:07:15,536 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:07:15,537 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:07:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:07:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:07:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:07:15,538 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:07:15,538 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:07:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:07:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:07:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:07:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:07:15,539 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-19 07:07:15,539 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-19 07:07:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:07:15,540 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:07:15,540 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:07:15,541 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:07:15,542 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:07:15,542 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:07:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:07:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:07:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:07:15,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:07:15,543 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:07:15,544 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:07:15,723 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:07:15,726 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:07:17,126 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:07:18,119 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:07:18,119 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:07:18,126 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:18 BoogieIcfgContainer [2022-11-19 07:07:18,126 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:07:18,129 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:07:18,129 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:07:18,133 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:07:18,133 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:07:14" (1/3) ... [2022-11-19 07:07:18,134 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2af46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:18, skipping insertion in model container [2022-11-19 07:07:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:07:15" (2/3) ... [2022-11-19 07:07:18,135 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b2af46 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:07:18, skipping insertion in model container [2022-11-19 07:07:18,135 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:07:18" (3/3) ... [2022-11-19 07:07:18,137 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2022-11-19 07:07:18,160 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:07:18,160 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:07:18,285 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:07:18,295 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;@fe62149, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:07:18,296 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:07:18,307 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-19 07:07:18,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-19 07:07:18,340 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:18,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:18,342 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:18,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:18,358 INFO L85 PathProgramCache]: Analyzing trace with hash 1790014537, now seen corresponding path program 1 times [2022-11-19 07:07:18,369 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:18,369 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [424753398] [2022-11-19 07:07:18,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:18,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:18,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:19,538 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:07:19,538 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:19,539 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [424753398] [2022-11-19 07:07:19,540 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [424753398] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:19,540 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:19,540 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-19 07:07:19,542 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [853448082] [2022-11-19 07:07:19,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:19,557 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-19 07:07:19,558 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:19,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-19 07:07:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-19 07:07:19,605 INFO L87 Difference]: Start difference. First operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:07:20,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:20,320 INFO L93 Difference]: Finished difference Result 851 states and 1377 transitions. [2022-11-19 07:07:20,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:20,328 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 76 [2022-11-19 07:07:20,329 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:20,348 INFO L225 Difference]: With dead ends: 851 [2022-11-19 07:07:20,349 INFO L226 Difference]: Without dead ends: 490 [2022-11-19 07:07:20,363 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:20,372 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 282 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:20,373 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-19 07:07:20,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-19 07:07:20,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 380. [2022-11-19 07:07:20,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 257 states have (on average 1.5719844357976653) internal successors, (404), 276 states have internal predecessors, (404), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-19 07:07:20,490 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 595 transitions. [2022-11-19 07:07:20,494 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 595 transitions. Word has length 76 [2022-11-19 07:07:20,495 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:20,496 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 595 transitions. [2022-11-19 07:07:20,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-19 07:07:20,498 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 595 transitions. [2022-11-19 07:07:20,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-19 07:07:20,505 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:20,505 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:20,505 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:07:20,506 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:20,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:20,507 INFO L85 PathProgramCache]: Analyzing trace with hash -798954435, now seen corresponding path program 1 times [2022-11-19 07:07:20,507 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:20,507 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [370382397] [2022-11-19 07:07:20,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:20,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:20,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:21,253 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:21,254 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:21,254 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [370382397] [2022-11-19 07:07:21,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [370382397] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:21,255 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:21,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:07:21,255 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2077015147] [2022-11-19 07:07:21,255 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:21,257 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:07:21,258 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:21,258 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:07:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:21,259 INFO L87 Difference]: Start difference. First operand 380 states and 595 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-19 07:07:25,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:25,374 INFO L93 Difference]: Finished difference Result 1287 states and 2054 transitions. [2022-11-19 07:07:25,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 07:07:25,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 79 [2022-11-19 07:07:25,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:25,384 INFO L225 Difference]: With dead ends: 1287 [2022-11-19 07:07:25,385 INFO L226 Difference]: Without dead ends: 930 [2022-11-19 07:07:25,393 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:07:25,395 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1740 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 4574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:25,396 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 2530 Invalid, 4574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [593 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-19 07:07:25,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-19 07:07:25,515 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 874. [2022-11-19 07:07:25,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 614 states have (on average 1.5944625407166124) internal successors, (979), 645 states have internal predecessors, (979), 206 states have call successors, (206), 49 states have call predecessors, (206), 53 states have return successors, (213), 204 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-19 07:07:25,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1398 transitions. [2022-11-19 07:07:25,526 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1398 transitions. Word has length 79 [2022-11-19 07:07:25,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:25,528 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1398 transitions. [2022-11-19 07:07:25,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-19 07:07:25,528 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1398 transitions. [2022-11-19 07:07:25,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-19 07:07:25,537 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:25,537 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:25,538 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:07:25,539 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:25,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:25,550 INFO L85 PathProgramCache]: Analyzing trace with hash -2051632693, now seen corresponding path program 1 times [2022-11-19 07:07:25,550 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:25,550 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [951403347] [2022-11-19 07:07:25,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:25,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:25,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:26,086 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:26,086 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:26,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [951403347] [2022-11-19 07:07:26,087 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [951403347] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:26,087 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:26,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:07:26,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638533351] [2022-11-19 07:07:26,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:26,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:26,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:26,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:26,091 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:26,092 INFO L87 Difference]: Start difference. First operand 874 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:26,368 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:26,369 INFO L93 Difference]: Finished difference Result 1477 states and 2374 transitions. [2022-11-19 07:07:26,369 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:26,369 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-19 07:07:26,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:26,381 INFO L225 Difference]: With dead ends: 1477 [2022-11-19 07:07:26,381 INFO L226 Difference]: Without dead ends: 963 [2022-11-19 07:07:26,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:07:26,392 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 42 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:26,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3533 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:26,396 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-19 07:07:26,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 895. [2022-11-19 07:07:26,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 629 states have (on average 1.5802861685214626) internal successors, (994), 660 states have internal predecessors, (994), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 210 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-19 07:07:26,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1428 transitions. [2022-11-19 07:07:26,472 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1428 transitions. Word has length 83 [2022-11-19 07:07:26,474 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:26,474 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1428 transitions. [2022-11-19 07:07:26,475 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:26,475 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1428 transitions. [2022-11-19 07:07:26,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:07:26,480 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:26,480 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:26,480 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:07:26,481 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:26,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:26,482 INFO L85 PathProgramCache]: Analyzing trace with hash 492286256, now seen corresponding path program 1 times [2022-11-19 07:07:26,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:26,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499948536] [2022-11-19 07:07:26,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:26,482 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:26,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:26,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:26,925 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:26,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499948536] [2022-11-19 07:07:26,925 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499948536] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:26,925 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:26,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:07:26,926 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953997580] [2022-11-19 07:07:26,926 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:26,928 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:26,928 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:26,928 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:26,928 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:26,929 INFO L87 Difference]: Start difference. First operand 895 states and 1428 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:27,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:27,220 INFO L93 Difference]: Finished difference Result 1506 states and 2412 transitions. [2022-11-19 07:07:27,222 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:27,227 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2022-11-19 07:07:27,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:27,234 INFO L225 Difference]: With dead ends: 1506 [2022-11-19 07:07:27,234 INFO L226 Difference]: Without dead ends: 978 [2022-11-19 07:07:27,237 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:07:27,238 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 41 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:27,239 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3552 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:27,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-19 07:07:27,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 898. [2022-11-19 07:07:27,289 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 632 states have (on average 1.5775316455696202) internal successors, (997), 660 states have internal predecessors, (997), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 213 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-19 07:07:27,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1431 transitions. [2022-11-19 07:07:27,296 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1431 transitions. Word has length 84 [2022-11-19 07:07:27,297 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:27,297 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1431 transitions. [2022-11-19 07:07:27,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:27,297 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1431 transitions. [2022-11-19 07:07:27,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-19 07:07:27,300 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:27,300 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:27,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:07:27,301 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:27,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:27,301 INFO L85 PathProgramCache]: Analyzing trace with hash -1679655152, now seen corresponding path program 1 times [2022-11-19 07:07:27,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:27,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [287037852] [2022-11-19 07:07:27,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:27,302 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:27,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:27,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:27,679 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:27,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [287037852] [2022-11-19 07:07:27,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [287037852] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:27,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:27,680 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:07:27,680 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1576133714] [2022-11-19 07:07:27,680 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:27,681 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:27,681 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:27,682 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:27,682 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:27,682 INFO L87 Difference]: Start difference. First operand 898 states and 1431 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:27,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:27,994 INFO L93 Difference]: Finished difference Result 1511 states and 2417 transitions. [2022-11-19 07:07:27,994 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:27,994 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2022-11-19 07:07:27,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:28,001 INFO L225 Difference]: With dead ends: 1511 [2022-11-19 07:07:28,001 INFO L226 Difference]: Without dead ends: 981 [2022-11-19 07:07:28,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 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 07:07:28,005 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 41 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:28,006 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3557 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:07:28,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-19 07:07:28,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 901. [2022-11-19 07:07:28,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 635 states have (on average 1.5748031496062993) internal successors, (1000), 660 states have internal predecessors, (1000), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 216 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-19 07:07:28,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1434 transitions. [2022-11-19 07:07:28,065 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1434 transitions. Word has length 84 [2022-11-19 07:07:28,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:28,066 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1434 transitions. [2022-11-19 07:07:28,066 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-19 07:07:28,066 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1434 transitions. [2022-11-19 07:07:28,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:07:28,069 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:28,069 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:28,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:07:28,069 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:28,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:28,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1136269027, now seen corresponding path program 1 times [2022-11-19 07:07:28,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:28,070 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [801026088] [2022-11-19 07:07:28,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:28,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:28,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:28,522 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:28,522 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:28,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [801026088] [2022-11-19 07:07:28,523 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [801026088] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:28,523 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:28,523 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:07:28,523 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [95623493] [2022-11-19 07:07:28,523 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:28,524 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:07:28,524 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:28,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:07:28,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:28,525 INFO L87 Difference]: Start difference. First operand 901 states and 1434 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:07:31,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:31,854 INFO L93 Difference]: Finished difference Result 2053 states and 3286 transitions. [2022-11-19 07:07:31,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:07:31,855 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2022-11-19 07:07:31,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:31,871 INFO L225 Difference]: With dead ends: 2053 [2022-11-19 07:07:31,871 INFO L226 Difference]: Without dead ends: 1400 [2022-11-19 07:07:31,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:31,878 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 2664 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 2682 mSolverCounterSat, 1157 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2829 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3839 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1157 IncrementalHoareTripleChecker+Valid, 2682 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:31,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2829 Valid, 1329 Invalid, 3839 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1157 Valid, 2682 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:07:31,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-19 07:07:31,976 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1302. [2022-11-19 07:07:31,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 904 states have (on average 1.5342920353982301) internal successors, (1387), 944 states have internal predecessors, (1387), 306 states have call successors, (306), 77 states have call predecessors, (306), 91 states have return successors, (346), 317 states have call predecessors, (346), 301 states have call successors, (346) [2022-11-19 07:07:31,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2039 transitions. [2022-11-19 07:07:31,989 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2039 transitions. Word has length 87 [2022-11-19 07:07:31,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:31,990 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 2039 transitions. [2022-11-19 07:07:31,990 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:07:31,990 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2039 transitions. [2022-11-19 07:07:32,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-19 07:07:32,015 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:32,015 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:32,015 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:07:32,015 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:32,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:32,016 INFO L85 PathProgramCache]: Analyzing trace with hash 1430013021, now seen corresponding path program 1 times [2022-11-19 07:07:32,016 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:32,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1863592069] [2022-11-19 07:07:32,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:32,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:32,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:32,306 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:32,307 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:32,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1863592069] [2022-11-19 07:07:32,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1863592069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:32,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:32,307 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:07:32,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1841370810] [2022-11-19 07:07:32,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:32,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:32,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:32,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:32,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:07:32,309 INFO L87 Difference]: Start difference. First operand 1302 states and 2039 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:07:32,768 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:32,768 INFO L93 Difference]: Finished difference Result 2584 states and 4121 transitions. [2022-11-19 07:07:32,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:07:32,769 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2022-11-19 07:07:32,770 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:32,781 INFO L225 Difference]: With dead ends: 2584 [2022-11-19 07:07:32,781 INFO L226 Difference]: Without dead ends: 1506 [2022-11-19 07:07:32,789 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:32,792 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 245 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:32,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2660 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:32,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-19 07:07:32,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-19 07:07:32,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1092 states have (on average 1.5393772893772895) internal successors, (1681), 1138 states have internal predecessors, (1681), 311 states have call successors, (311), 82 states have call predecessors, (311), 102 states have return successors, (351), 322 states have call predecessors, (351), 306 states have call successors, (351) [2022-11-19 07:07:32,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2343 transitions. [2022-11-19 07:07:32,911 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2343 transitions. Word has length 90 [2022-11-19 07:07:32,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:32,912 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2343 transitions. [2022-11-19 07:07:32,912 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:07:32,913 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2343 transitions. [2022-11-19 07:07:32,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-19 07:07:32,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:32,948 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:32,948 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:07:32,948 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:32,949 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:32,949 INFO L85 PathProgramCache]: Analyzing trace with hash 612290836, now seen corresponding path program 1 times [2022-11-19 07:07:32,949 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:32,949 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [561435814] [2022-11-19 07:07:32,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:32,950 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:33,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:33,294 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:33,294 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [561435814] [2022-11-19 07:07:33,294 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [561435814] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:33,295 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:33,295 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:07:33,295 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564943525] [2022-11-19 07:07:33,295 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:33,296 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:33,296 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:33,296 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:33,296 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:07:33,297 INFO L87 Difference]: Start difference. First operand 1506 states and 2343 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:07:37,103 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:37,104 INFO L93 Difference]: Finished difference Result 6203 states and 9924 transitions. [2022-11-19 07:07:37,104 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:07:37,105 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2022-11-19 07:07:37,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:37,157 INFO L225 Difference]: With dead ends: 6203 [2022-11-19 07:07:37,157 INFO L226 Difference]: Without dead ends: 4721 [2022-11-19 07:07:37,175 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:37,176 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2111 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 895 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:37,176 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 1475 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-19 07:07:37,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2022-11-19 07:07:37,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4347. [2022-11-19 07:07:37,564 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3197 states have (on average 1.539255552080075) internal successors, (4921), 3329 states have internal predecessors, (4921), 859 states have call successors, (859), 226 states have call predecessors, (859), 290 states have return successors, (1081), 882 states have call predecessors, (1081), 854 states have call successors, (1081) [2022-11-19 07:07:37,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 6861 transitions. [2022-11-19 07:07:37,593 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 6861 transitions. Word has length 91 [2022-11-19 07:07:37,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:37,593 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 6861 transitions. [2022-11-19 07:07:37,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-19 07:07:37,594 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 6861 transitions. [2022-11-19 07:07:37,597 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-19 07:07:37,597 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:37,597 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:37,597 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:07:37,598 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:37,598 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:37,598 INFO L85 PathProgramCache]: Analyzing trace with hash -133654052, now seen corresponding path program 1 times [2022-11-19 07:07:37,598 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:37,599 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1659331594] [2022-11-19 07:07:37,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:37,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:37,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:38,064 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:07:38,064 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:38,065 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1659331594] [2022-11-19 07:07:38,065 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1659331594] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:38,065 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:38,065 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:07:38,066 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [482421563] [2022-11-19 07:07:38,066 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:38,067 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:07:38,067 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:38,068 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:07:38,068 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:07:38,068 INFO L87 Difference]: Start difference. First operand 4347 states and 6861 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-19 07:07:40,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:40,938 INFO L93 Difference]: Finished difference Result 8235 states and 13096 transitions. [2022-11-19 07:07:40,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:07:40,939 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 92 [2022-11-19 07:07:40,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:40,980 INFO L225 Difference]: With dead ends: 8235 [2022-11-19 07:07:40,980 INFO L226 Difference]: Without dead ends: 4853 [2022-11-19 07:07:41,001 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:07:41,004 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 990 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:41,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1624 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:07:41,012 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2022-11-19 07:07:41,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4457. [2022-11-19 07:07:41,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 3273 states have (on average 1.5346776657500765) internal successors, (5023), 3417 states have internal predecessors, (5023), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-19 07:07:41,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 7012 transitions. [2022-11-19 07:07:41,436 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 7012 transitions. Word has length 92 [2022-11-19 07:07:41,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:41,438 INFO L495 AbstractCegarLoop]: Abstraction has 4457 states and 7012 transitions. [2022-11-19 07:07:41,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-19 07:07:41,438 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 7012 transitions. [2022-11-19 07:07:41,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-19 07:07:41,449 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:41,449 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:41,450 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:07:41,450 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:41,450 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:41,451 INFO L85 PathProgramCache]: Analyzing trace with hash 1977267992, now seen corresponding path program 1 times [2022-11-19 07:07:41,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:41,451 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1787865167] [2022-11-19 07:07:41,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:41,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:41,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:41,850 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:07:41,850 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:41,851 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1787865167] [2022-11-19 07:07:41,851 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1787865167] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:41,851 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:41,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:07:41,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1378780888] [2022-11-19 07:07:41,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:41,853 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:07:41,853 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:41,853 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:07:41,854 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:07:41,854 INFO L87 Difference]: Start difference. First operand 4457 states and 7012 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:07:42,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:42,887 INFO L93 Difference]: Finished difference Result 4551 states and 7164 transitions. [2022-11-19 07:07:42,887 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:07:42,888 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2022-11-19 07:07:42,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:42,921 INFO L225 Difference]: With dead ends: 4551 [2022-11-19 07:07:42,921 INFO L226 Difference]: Without dead ends: 4536 [2022-11-19 07:07:42,927 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:42,928 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 685 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:42,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1832 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-19 07:07:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-11-19 07:07:43,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4463. [2022-11-19 07:07:43,342 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3279 states have (on average 1.5336992985666362) internal successors, (5029), 3423 states have internal predecessors, (5029), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-19 07:07:43,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 7018 transitions. [2022-11-19 07:07:43,374 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 7018 transitions. Word has length 96 [2022-11-19 07:07:43,375 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:43,375 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 7018 transitions. [2022-11-19 07:07:43,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:07:43,376 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 7018 transitions. [2022-11-19 07:07:43,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-19 07:07:43,379 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:43,379 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:43,380 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:07:43,380 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:43,381 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:43,381 INFO L85 PathProgramCache]: Analyzing trace with hash 1976842914, now seen corresponding path program 1 times [2022-11-19 07:07:43,381 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:43,381 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1059076575] [2022-11-19 07:07:43,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:43,382 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:43,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:43,797 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:07:43,797 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:43,797 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1059076575] [2022-11-19 07:07:43,798 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1059076575] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:43,798 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:43,798 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:07:43,798 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [750067800] [2022-11-19 07:07:43,798 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:43,799 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:07:43,799 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:43,800 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:07:43,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:07:43,800 INFO L87 Difference]: Start difference. First operand 4463 states and 7018 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 07:07:44,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:44,572 INFO L93 Difference]: Finished difference Result 4916 states and 7709 transitions. [2022-11-19 07:07:44,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-19 07:07:44,572 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 102 [2022-11-19 07:07:44,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:44,614 INFO L225 Difference]: With dead ends: 4916 [2022-11-19 07:07:44,614 INFO L226 Difference]: Without dead ends: 4469 [2022-11-19 07:07:44,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:07:44,621 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 319 mSDsluCounter, 3682 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:44,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 4252 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-19 07:07:44,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2022-11-19 07:07:45,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4463. [2022-11-19 07:07:45,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3279 states have (on average 1.5019823116803903) internal successors, (4925), 3423 states have internal predecessors, (4925), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-19 07:07:45,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6914 transitions. [2022-11-19 07:07:45,103 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6914 transitions. Word has length 102 [2022-11-19 07:07:45,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:45,105 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 6914 transitions. [2022-11-19 07:07:45,105 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 07:07:45,105 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6914 transitions. [2022-11-19 07:07:45,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-19 07:07:45,109 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:45,109 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 07:07:45,110 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:07:45,110 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:45,111 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:45,111 INFO L85 PathProgramCache]: Analyzing trace with hash 826552684, now seen corresponding path program 1 times [2022-11-19 07:07:45,111 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:45,111 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821773766] [2022-11-19 07:07:45,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:45,112 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:45,905 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:07:45,905 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:45,905 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821773766] [2022-11-19 07:07:45,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821773766] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:07:45,906 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:07:45,906 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:07:45,906 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305288621] [2022-11-19 07:07:45,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:07:45,907 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:07:45,907 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:07:45,907 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:07:45,908 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:07:45,908 INFO L87 Difference]: Start difference. First operand 4463 states and 6914 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-19 07:07:50,845 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:07:50,845 INFO L93 Difference]: Finished difference Result 16307 states and 25654 transitions. [2022-11-19 07:07:50,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:07:50,846 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 108 [2022-11-19 07:07:50,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:07:50,926 INFO L225 Difference]: With dead ends: 16307 [2022-11-19 07:07:50,926 INFO L226 Difference]: Without dead ends: 11867 [2022-11-19 07:07:50,948 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:07:50,950 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2600 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 3069 mSolverCounterSat, 1035 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2664 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 4104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1035 IncrementalHoareTripleChecker+Valid, 3069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-19 07:07:50,950 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2664 Valid, 1650 Invalid, 4104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1035 Valid, 3069 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-19 07:07:50,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2022-11-19 07:07:52,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 10582. [2022-11-19 07:07:52,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10582 states, 7735 states have (on average 1.5148028442146089) internal successors, (11717), 8102 states have internal predecessors, (11717), 2158 states have call successors, (2158), 522 states have call predecessors, (2158), 688 states have return successors, (2706), 2092 states have call predecessors, (2706), 2153 states have call successors, (2706) [2022-11-19 07:07:52,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10582 states to 10582 states and 16581 transitions. [2022-11-19 07:07:52,141 INFO L78 Accepts]: Start accepts. Automaton has 10582 states and 16581 transitions. Word has length 108 [2022-11-19 07:07:52,141 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:07:52,141 INFO L495 AbstractCegarLoop]: Abstraction has 10582 states and 16581 transitions. [2022-11-19 07:07:52,142 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-19 07:07:52,142 INFO L276 IsEmpty]: Start isEmpty. Operand 10582 states and 16581 transitions. [2022-11-19 07:07:52,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-19 07:07:52,146 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:07:52,146 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:07:52,146 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:07:52,147 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:07:52,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:07:52,147 INFO L85 PathProgramCache]: Analyzing trace with hash -1131127679, now seen corresponding path program 1 times [2022-11-19 07:07:52,148 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:07:52,148 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1191311733] [2022-11-19 07:07:52,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:52,148 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:07:52,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:54,760 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:07:54,761 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:07:54,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1191311733] [2022-11-19 07:07:54,761 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1191311733] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:07:54,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [953447414] [2022-11-19 07:07:54,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:07:54,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:07:54,762 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:07:54,767 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:07:54,775 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:07:55,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:07:55,278 INFO L263 TraceCheckSpWp]: Trace formula consists of 1879 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:07:55,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:07:58,401 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:07:58,401 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:08:01,573 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:08:01,573 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [953447414] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:08:01,573 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [994279366] [2022-11-19 07:08:01,601 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-11-19 07:08:01,601 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:08:01,606 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:08:01,613 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:08:01,614 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:08:11,136 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-19 07:09:37,941 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-19 07:09:47,558 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 102 for LOIs [2022-11-19 07:09:47,621 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 66 for LOIs [2022-11-19 07:09:47,641 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 75 for LOIs [2022-11-19 07:09:47,656 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 108 for LOIs [2022-11-19 07:09:47,675 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-19 07:09:52,270 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 471 for LOIs [2022-11-19 07:09:52,674 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 104 for LOIs [2022-11-19 07:09:53,096 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 99 for LOIs [2022-11-19 07:09:53,112 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-19 07:09:56,433 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-11-19 07:10:10,294 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-11-19 07:10:10,992 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:10:16,896 WARN L233 SmtUtils]: Spent 5.56s 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 07:10:31,298 WARN L233 SmtUtils]: Spent 9.28s on a formula simplification. DAG size of input: 656 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:41,634 WARN L233 SmtUtils]: Spent 9.64s on a formula simplification. DAG size of input: 696 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:10:52,037 WARN L233 SmtUtils]: Spent 9.86s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:02,442 WARN L233 SmtUtils]: Spent 9.84s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:28,630 WARN L233 SmtUtils]: Spent 25.28s on a formula simplification. DAG size of input: 829 DAG size of output: 681 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:11:53,614 WARN L233 SmtUtils]: Spent 23.65s on a formula simplification. DAG size of input: 902 DAG size of output: 807 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:10,597 WARN L233 SmtUtils]: Spent 6.15s on a formula simplification. DAG size of input: 543 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:18,147 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 545 DAG size of output: 507 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:25,740 WARN L233 SmtUtils]: Spent 6.74s on a formula simplification. DAG size of input: 548 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:44,518 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 557 DAG size of output: 487 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:51,459 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 557 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:13:59,011 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 560 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:05,858 WARN L233 SmtUtils]: Spent 5.91s on a formula simplification. DAG size of input: 563 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:12,966 WARN L233 SmtUtils]: Spent 6.13s on a formula simplification. DAG size of input: 569 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:20,207 WARN L233 SmtUtils]: Spent 6.22s on a formula simplification. DAG size of input: 585 DAG size of output: 508 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:20,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [994279366] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:14:20,211 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:14:20,211 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [62] imperfect sequences [20, 12, 12] total 98 [2022-11-19 07:14:20,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025257603] [2022-11-19 07:14:20,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:14:20,212 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 63 states [2022-11-19 07:14:20,212 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:14:20,213 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 63 interpolants. [2022-11-19 07:14:20,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=669, Invalid=8837, Unknown=0, NotChecked=0, Total=9506 [2022-11-19 07:14:20,216 INFO L87 Difference]: Start difference. First operand 10582 states and 16581 transitions. Second operand has 63 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 41 states have internal predecessors, (67), 17 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19) [2022-11-19 07:14:27,657 WARN L233 SmtUtils]: Spent 6.56s on a formula simplification. DAG size of input: 727 DAG size of output: 649 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:34,852 WARN L233 SmtUtils]: Spent 6.70s on a formula simplification. DAG size of input: 739 DAG size of output: 656 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:14:41,873 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 744 DAG size of output: 660 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:05,101 WARN L233 SmtUtils]: Spent 5.35s on a formula simplification. DAG size of input: 606 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:10,962 WARN L233 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 612 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:17,700 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 644 DAG size of output: 614 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:24,577 WARN L233 SmtUtils]: Spent 6.28s on a formula simplification. DAG size of input: 640 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:30,941 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 623 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:37,403 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 629 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:45,187 WARN L233 SmtUtils]: Spent 7.15s on a formula simplification. DAG size of input: 681 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:15:53,283 WARN L233 SmtUtils]: Spent 7.48s on a formula simplification. DAG size of input: 684 DAG size of output: 619 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:02,450 WARN L233 SmtUtils]: Spent 8.49s on a formula simplification. DAG size of input: 688 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:16:11,457 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 690 DAG size of output: 625 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:17:07,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:17:07,046 INFO L93 Difference]: Finished difference Result 21258 states and 33329 transitions. [2022-11-19 07:17:07,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 35 states. [2022-11-19 07:17:07,048 INFO L78 Accepts]: Start accepts. Automaton has has 63 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 41 states have internal predecessors, (67), 17 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19) Word has length 111 [2022-11-19 07:17:07,048 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:17:07,119 INFO L225 Difference]: With dead ends: 21258 [2022-11-19 07:17:07,120 INFO L226 Difference]: Without dead ends: 10696 [2022-11-19 07:17:07,167 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 374 GetRequests, 257 SyntacticMatches, 5 SemanticMatches, 112 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4374 ImplicationChecksByTransitivity, 356.6s TimeCoverageRelationStatistics Valid=942, Invalid=11940, Unknown=0, NotChecked=0, Total=12882 [2022-11-19 07:17:07,167 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 193 mSDsluCounter, 8056 mSDsCounter, 0 mSdLazyCounter, 12140 mSolverCounterSat, 51 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 55.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 8558 SdHoareTripleChecker+Invalid, 12191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 51 IncrementalHoareTripleChecker+Valid, 12140 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 59.3s IncrementalHoareTripleChecker+Time [2022-11-19 07:17:07,168 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 8558 Invalid, 12191 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [51 Valid, 12140 Invalid, 0 Unknown, 0 Unchecked, 59.3s Time] [2022-11-19 07:17:07,182 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10696 states. [2022-11-19 07:17:08,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10696 to 10614. [2022-11-19 07:17:08,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10614 states, 7758 states have (on average 1.5134055168857954) internal successors, (11741), 8126 states have internal predecessors, (11741), 2162 states have call successors, (2162), 527 states have call predecessors, (2162), 693 states have return successors, (2711), 2095 states have call predecessors, (2711), 2157 states have call successors, (2711) [2022-11-19 07:17:08,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10614 states to 10614 states and 16614 transitions. [2022-11-19 07:17:08,274 INFO L78 Accepts]: Start accepts. Automaton has 10614 states and 16614 transitions. Word has length 111 [2022-11-19 07:17:08,275 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:17:08,275 INFO L495 AbstractCegarLoop]: Abstraction has 10614 states and 16614 transitions. [2022-11-19 07:17:08,275 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 63 states, 49 states have (on average 1.3673469387755102) internal successors, (67), 41 states have internal predecessors, (67), 17 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (19), 16 states have call predecessors, (19), 17 states have call successors, (19) [2022-11-19 07:17:08,275 INFO L276 IsEmpty]: Start isEmpty. Operand 10614 states and 16614 transitions. [2022-11-19 07:17:08,279 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-19 07:17:08,279 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:17:08,280 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:17:08,296 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-19 07:17:08,488 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:08,488 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:17:08,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:17:08,489 INFO L85 PathProgramCache]: Analyzing trace with hash 98529616, now seen corresponding path program 1 times [2022-11-19 07:17:08,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:17:08,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [694755366] [2022-11-19 07:17:08,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:08,489 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:17:08,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:10,727 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:17:10,727 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:17:10,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [694755366] [2022-11-19 07:17:10,728 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [694755366] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:17:10,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [803847172] [2022-11-19 07:17:10,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:17:10,728 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:17:10,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:17:10,730 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:17:10,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9c445865-b14b-497f-b442-408f5304d309/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-19 07:17:11,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:17:11,218 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:17:11,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:17:13,525 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:17:13,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:17:16,300 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:17:16,300 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [803847172] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:17:16,300 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1493750269] [2022-11-19 07:17:16,304 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2022-11-19 07:17:16,304 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:17:16,305 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:17:16,305 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:17:16,305 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:17:22,667 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-19 07:18:38,851 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-19 07:18:47,445 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 102 for LOIs [2022-11-19 07:18:48,077 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 116 for LOIs [2022-11-19 07:18:48,691 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-11-19 07:18:48,702 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 75 for LOIs [2022-11-19 07:18:48,721 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 93 for LOIs [2022-11-19 07:18:48,736 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-19 07:18:52,870 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 453 for LOIs [2022-11-19 07:18:53,172 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 101 for LOIs [2022-11-19 07:18:53,520 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 75 for LOIs [2022-11-19 07:18:53,526 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-19 07:18:56,822 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs