./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur --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 b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd --- 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-38b53e6 [2022-11-25 23:41:38,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:41:38,815 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:41:38,835 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:41:38,836 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:41:38,837 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:41:38,838 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:41:38,840 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:41:38,842 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:41:38,843 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:41:38,844 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:41:38,845 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:41:38,845 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:41:38,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:41:38,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:41:38,849 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:41:38,850 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:41:38,851 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:41:38,853 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:41:38,855 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:41:38,857 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:41:38,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:41:38,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:41:38,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:41:38,864 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:41:38,864 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:41:38,865 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:41:38,866 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:41:38,867 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:41:38,868 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:41:38,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:41:38,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:41:38,870 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:41:38,871 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:41:38,872 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:41:38,872 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:41:38,873 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:41:38,873 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:41:38,874 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:41:38,875 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:41:38,875 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:41:38,876 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:41:38,898 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:41:38,898 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:41:38,899 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:41:38,899 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:41:38,900 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:41:38,900 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:41:38,900 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:41:38,901 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:41:38,901 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:41:38,901 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:41:38,902 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:41:38,902 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:41:38,902 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:41:38,903 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:41:38,903 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:41:38,903 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:41:38,904 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:41:38,904 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:41:38,905 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:41:38,905 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:41:38,906 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:41:38,906 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:41:38,906 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:41:38,907 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:41:38,907 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:41:38,907 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:41:38,908 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:41:38,908 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:41:38,908 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:41:38,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:41:38,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:41:38,909 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:41:38,910 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:38,910 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:41:38,910 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:41:38,911 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:41:38,911 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:41:38,911 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:41:38,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:41:38,912 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:41:38,912 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:41:38,912 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_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b02d53de4cc8dbaebc187e8fa236234211af4eca5416c7869304d04f0d61a0bd [2022-11-25 23:41:39,190 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:41:39,228 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:41:39,231 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:41:39,232 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:41:39,233 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:41:39,235 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-25 23:41:42,487 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:41:42,830 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:41:42,830 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c [2022-11-25 23:41:42,860 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/data/f9b9b55e1/809d8e63ab0346978bfbdd4978b3ed60/FLAG9ea8dcc40 [2022-11-25 23:41:42,874 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/data/f9b9b55e1/809d8e63ab0346978bfbdd4978b3ed60 [2022-11-25 23:41:42,877 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:41:42,879 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:41:42,880 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:42,880 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:41:42,884 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:41:42,885 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:42" (1/1) ... [2022-11-25 23:41:42,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@474d13f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:42, skipping insertion in model container [2022-11-25 23:41:42,886 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:41:42" (1/1) ... [2022-11-25 23:41:42,894 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:41:42,954 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:41:43,372 WARN L237 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_3053dba0-f05f-42f5-a926-6753aef75fb4/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-25 23:41:43,513 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:43,533 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:41:43,631 WARN L237 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_3053dba0-f05f-42f5-a926-6753aef75fb4/sv-benchmarks/c/product-lines/elevator_spec2_product21.cil.c[40071,40084] [2022-11-25 23:41:43,667 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:41:43,691 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:41:43,692 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43 WrapperNode [2022-11-25 23:41:43,692 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:41:43,693 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:43,693 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:41:43,693 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:41:43,701 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,724 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,772 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 861 [2022-11-25 23:41:43,778 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:41:43,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:41:43,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:41:43,779 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:41:43,788 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,788 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,795 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,795 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,812 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,829 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,834 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,841 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:41:43,842 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:41:43,842 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:41:43,842 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:41:43,843 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (1/1) ... [2022-11-25 23:41:43,849 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:41:43,861 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:41:43,875 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:41:43,898 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:41:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:41:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 23:41:43,945 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 23:41:43,945 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 23:41:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 23:41:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 23:41:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 23:41:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 23:41:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 23:41:43,946 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 23:41:43,946 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 23:41:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 23:41:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 23:41:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 23:41:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 23:41:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 23:41:43,947 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 23:41:43,947 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 23:41:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 23:41:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 23:41:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 23:41:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 23:41:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 23:41:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 23:41:43,948 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 23:41:43,948 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 23:41:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 23:41:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 23:41:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 23:41:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 23:41:43,949 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 23:41:43,949 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 23:41:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 23:41:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 23:41:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 23:41:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 23:41:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 23:41:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:41:43,950 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 23:41:43,950 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 23:41:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 23:41:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 23:41:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 23:41:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 23:41:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 23:41:43,951 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 23:41:43,951 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-25 23:41:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-25 23:41:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:41:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:41:43,952 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 23:41:43,952 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 23:41:44,112 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:41:44,122 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:41:45,553 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:41:46,465 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:41:46,466 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:41:46,471 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:46 BoogieIcfgContainer [2022-11-25 23:41:46,471 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:41:46,475 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:41:46,475 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:41:46,479 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:41:46,479 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:41:42" (1/3) ... [2022-11-25 23:41:46,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c633152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:46, skipping insertion in model container [2022-11-25 23:41:46,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:41:43" (2/3) ... [2022-11-25 23:41:46,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c633152 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:41:46, skipping insertion in model container [2022-11-25 23:41:46,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:41:46" (3/3) ... [2022-11-25 23:41:46,494 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec2_product21.cil.c [2022-11-25 23:41:46,517 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:41:46,518 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:41:46,606 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:41:46,615 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;@3bfce5ee, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:41:46,616 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:41:46,625 INFO L276 IsEmpty]: Start isEmpty. Operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) [2022-11-25 23:41:46,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-11-25 23:41:46,667 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:46,668 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:46,670 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:41:46,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:46,679 INFO L85 PathProgramCache]: Analyzing trace with hash -1083051689, now seen corresponding path program 1 times [2022-11-25 23:41:46,691 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:46,691 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [254210961] [2022-11-25 23:41:46,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:46,692 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:47,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:47,736 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:41:47,737 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:47,737 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [254210961] [2022-11-25 23:41:47,738 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [254210961] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:47,738 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:41:47,739 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:41:47,741 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1298645825] [2022-11-25 23:41:47,742 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:47,747 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:41:47,748 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:47,799 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:41:47,800 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:41:47,806 INFO L87 Difference]: Start difference. First operand has 374 states, 253 states have (on average 1.5968379446640317) internal successors, (404), 274 states have internal predecessors, (404), 95 states have call successors, (95), 24 states have call predecessors, (95), 24 states have return successors, (95), 89 states have call predecessors, (95), 95 states have call successors, (95) Second operand has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:41:48,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:48,359 INFO L93 Difference]: Finished difference Result 844 states and 1368 transitions. [2022-11-25 23:41:48,361 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:41:48,362 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 65 [2022-11-25 23:41:48,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:48,395 INFO L225 Difference]: With dead ends: 844 [2022-11-25 23:41:48,397 INFO L226 Difference]: Without dead ends: 483 [2022-11-25 23:41:48,408 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:41:48,411 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 282 mSDsluCounter, 1672 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2322 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:48,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2322 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 23:41:48,435 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 483 states. [2022-11-25 23:41:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 483 to 373. [2022-11-25 23:41:48,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 373 states, 254 states have (on average 1.578740157480315) internal successors, (401), 273 states have internal predecessors, (401), 95 states have call successors, (95), 24 states have call predecessors, (95), 23 states have return successors, (90), 88 states have call predecessors, (90), 90 states have call successors, (90) [2022-11-25 23:41:48,501 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 373 states to 373 states and 586 transitions. [2022-11-25 23:41:48,503 INFO L78 Accepts]: Start accepts. Automaton has 373 states and 586 transitions. Word has length 65 [2022-11-25 23:41:48,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:48,504 INFO L495 AbstractCegarLoop]: Abstraction has 373 states and 586 transitions. [2022-11-25 23:41:48,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.8) internal successors, (44), 5 states have internal predecessors, (44), 2 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2022-11-25 23:41:48,504 INFO L276 IsEmpty]: Start isEmpty. Operand 373 states and 586 transitions. [2022-11-25 23:41:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2022-11-25 23:41:48,512 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:48,512 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:48,512 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:41:48,513 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:41:48,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:48,514 INFO L85 PathProgramCache]: Analyzing trace with hash 178267563, now seen corresponding path program 1 times [2022-11-25 23:41:48,514 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:48,514 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [222413612] [2022-11-25 23:41:48,514 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:48,515 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:48,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:49,084 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:41:49,085 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:49,086 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [222413612] [2022-11-25 23:41:49,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [222413612] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:49,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:41:49,087 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:41:49,087 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [235302195] [2022-11-25 23:41:49,087 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:49,090 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:41:49,091 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:49,091 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:41:49,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:41:49,092 INFO L87 Difference]: Start difference. First operand 373 states and 586 transitions. Second operand has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-25 23:41:53,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:53,065 INFO L93 Difference]: Finished difference Result 1280 states and 2045 transitions. [2022-11-25 23:41:53,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 23:41:53,066 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) Word has length 68 [2022-11-25 23:41:53,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:53,079 INFO L225 Difference]: With dead ends: 1280 [2022-11-25 23:41:53,079 INFO L226 Difference]: Without dead ends: 923 [2022-11-25 23:41:53,086 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 [2022-11-25 23:41:53,089 INFO L413 NwaCegarLoop]: 397 mSDtfsCounter, 1733 mSDsluCounter, 2128 mSDsCounter, 0 mSdLazyCounter, 3925 mSolverCounterSat, 586 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1798 SdHoareTripleChecker+Valid, 2525 SdHoareTripleChecker+Invalid, 4511 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 586 IncrementalHoareTripleChecker+Valid, 3925 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:53,090 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1798 Valid, 2525 Invalid, 4511 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [586 Valid, 3925 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-25 23:41:53,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 923 states. [2022-11-25 23:41:53,177 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 923 to 867. [2022-11-25 23:41:53,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 867 states, 611 states have (on average 1.5973813420621932) internal successors, (976), 642 states have internal predecessors, (976), 203 states have call successors, (203), 48 states have call predecessors, (203), 52 states have return successors, (210), 201 states have call predecessors, (210), 198 states have call successors, (210) [2022-11-25 23:41:53,186 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 867 states to 867 states and 1389 transitions. [2022-11-25 23:41:53,187 INFO L78 Accepts]: Start accepts. Automaton has 867 states and 1389 transitions. Word has length 68 [2022-11-25 23:41:53,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:53,187 INFO L495 AbstractCegarLoop]: Abstraction has 867 states and 1389 transitions. [2022-11-25 23:41:53,188 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.888888888888889) internal successors, (44), 9 states have internal predecessors, (44), 6 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (11), 6 states have call predecessors, (11), 5 states have call successors, (11) [2022-11-25 23:41:53,188 INFO L276 IsEmpty]: Start isEmpty. Operand 867 states and 1389 transitions. [2022-11-25 23:41:53,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:41:53,192 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:53,192 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:53,192 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:41:53,193 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:41:53,193 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:53,193 INFO L85 PathProgramCache]: Analyzing trace with hash 314891806, now seen corresponding path program 1 times [2022-11-25 23:41:53,194 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:53,194 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1894675059] [2022-11-25 23:41:53,194 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:53,194 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:53,239 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:41:54,657 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:41:54,658 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:41:54,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1894675059] [2022-11-25 23:41:54,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1894675059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:41:54,659 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:41:54,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:41:54,660 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230986790] [2022-11-25 23:41:54,660 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:41:54,661 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:41:54,661 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:41:54,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:41:54,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:41:54,663 INFO L87 Difference]: Start difference. First operand 867 states and 1389 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:41:59,491 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:41:59,492 INFO L93 Difference]: Finished difference Result 3556 states and 5794 transitions. [2022-11-25 23:41:59,492 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-25 23:41:59,493 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 73 [2022-11-25 23:41:59,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:41:59,514 INFO L225 Difference]: With dead ends: 3556 [2022-11-25 23:41:59,514 INFO L226 Difference]: Without dead ends: 2706 [2022-11-25 23:41:59,519 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:41:59,520 INFO L413 NwaCegarLoop]: 523 mSDtfsCounter, 2161 mSDsluCounter, 1151 mSDsCounter, 0 mSdLazyCounter, 3185 mSolverCounterSat, 928 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2233 SdHoareTripleChecker+Valid, 1674 SdHoareTripleChecker+Invalid, 4113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 928 IncrementalHoareTripleChecker+Valid, 3185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:41:59,521 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2233 Valid, 1674 Invalid, 4113 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [928 Valid, 3185 Invalid, 0 Unknown, 0 Unchecked, 4.2s Time] [2022-11-25 23:41:59,525 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2706 states. [2022-11-25 23:41:59,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2706 to 2502. [2022-11-25 23:41:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2502 states, 1794 states have (on average 1.596432552954292) internal successors, (2864), 1885 states have internal predecessors, (2864), 563 states have call successors, (563), 128 states have call predecessors, (563), 144 states have return successors, (614), 549 states have call predecessors, (614), 558 states have call successors, (614) [2022-11-25 23:41:59,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2502 states to 2502 states and 4041 transitions. [2022-11-25 23:41:59,859 INFO L78 Accepts]: Start accepts. Automaton has 2502 states and 4041 transitions. Word has length 73 [2022-11-25 23:41:59,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:41:59,859 INFO L495 AbstractCegarLoop]: Abstraction has 2502 states and 4041 transitions. [2022-11-25 23:41:59,860 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 6 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:41:59,860 INFO L276 IsEmpty]: Start isEmpty. Operand 2502 states and 4041 transitions. [2022-11-25 23:41:59,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2022-11-25 23:41:59,862 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:41:59,863 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:41:59,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:41:59,863 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:41:59,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:41:59,864 INFO L85 PathProgramCache]: Analyzing trace with hash -1649083650, now seen corresponding path program 1 times [2022-11-25 23:41:59,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:41:59,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67068457] [2022-11-25 23:41:59,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:41:59,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:41:59,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:00,169 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:42:00,169 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:00,169 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67068457] [2022-11-25 23:42:00,170 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67068457] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:00,170 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:00,170 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:42:00,171 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1743106185] [2022-11-25 23:42:00,171 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:00,172 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:42:00,173 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:00,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:42:00,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:42:00,175 INFO L87 Difference]: Start difference. First operand 2502 states and 4041 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:42:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:00,657 INFO L93 Difference]: Finished difference Result 4303 states and 6959 transitions. [2022-11-25 23:42:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:42:00,658 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 72 [2022-11-25 23:42:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:00,680 INFO L225 Difference]: With dead ends: 4303 [2022-11-25 23:42:00,683 INFO L226 Difference]: Without dead ends: 2769 [2022-11-25 23:42:00,692 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 [2022-11-25 23:42:00,701 INFO L413 NwaCegarLoop]: 598 mSDtfsCounter, 41 mSDsluCounter, 2905 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3503 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 [2022-11-25 23:42:00,702 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3503 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:42:00,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2769 states. [2022-11-25 23:42:01,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2769 to 2575. [2022-11-25 23:42:01,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2575 states, 1845 states have (on average 1.5799457994579946) internal successors, (2915), 1938 states have internal predecessors, (2915), 563 states have call successors, (563), 128 states have call predecessors, (563), 166 states have return successors, (661), 569 states have call predecessors, (661), 558 states have call successors, (661) [2022-11-25 23:42:01,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2575 states to 2575 states and 4139 transitions. [2022-11-25 23:42:01,075 INFO L78 Accepts]: Start accepts. Automaton has 2575 states and 4139 transitions. Word has length 72 [2022-11-25 23:42:01,083 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:01,083 INFO L495 AbstractCegarLoop]: Abstraction has 2575 states and 4139 transitions. [2022-11-25 23:42:01,084 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 5 states have internal predecessors, (46), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:42:01,084 INFO L276 IsEmpty]: Start isEmpty. Operand 2575 states and 4139 transitions. [2022-11-25 23:42:01,086 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-25 23:42:01,087 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:01,087 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:01,087 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:42:01,088 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:01,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:01,088 INFO L85 PathProgramCache]: Analyzing trace with hash -1857049602, now seen corresponding path program 1 times [2022-11-25 23:42:01,089 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:01,089 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1405459386] [2022-11-25 23:42:01,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:01,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:01,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:01,431 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:42:01,432 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:01,432 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1405459386] [2022-11-25 23:42:01,432 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1405459386] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:01,432 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:01,433 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:42:01,433 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320387839] [2022-11-25 23:42:01,433 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:01,433 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:42:01,434 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:01,434 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:42:01,434 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:42:01,435 INFO L87 Difference]: Start difference. First operand 2575 states and 4139 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:42:01,946 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:01,946 INFO L93 Difference]: Finished difference Result 4401 states and 7082 transitions. [2022-11-25 23:42:01,947 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:42:01,947 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) Word has length 73 [2022-11-25 23:42:01,947 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:01,967 INFO L225 Difference]: With dead ends: 4401 [2022-11-25 23:42:01,967 INFO L226 Difference]: Without dead ends: 2820 [2022-11-25 23:42:01,975 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 [2022-11-25 23:42:01,978 INFO L413 NwaCegarLoop]: 593 mSDtfsCounter, 42 mSDsluCounter, 2886 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3479 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 [2022-11-25 23:42:01,978 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3479 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:42:01,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2820 states. [2022-11-25 23:42:02,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2820 to 2586. [2022-11-25 23:42:02,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2586 states, 1856 states have (on average 1.5765086206896552) internal successors, (2926), 1938 states have internal predecessors, (2926), 563 states have call successors, (563), 128 states have call predecessors, (563), 166 states have return successors, (661), 580 states have call predecessors, (661), 558 states have call successors, (661) [2022-11-25 23:42:02,330 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2586 states to 2586 states and 4150 transitions. [2022-11-25 23:42:02,330 INFO L78 Accepts]: Start accepts. Automaton has 2586 states and 4150 transitions. Word has length 73 [2022-11-25 23:42:02,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:02,331 INFO L495 AbstractCegarLoop]: Abstraction has 2586 states and 4150 transitions. [2022-11-25 23:42:02,331 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (13), 2 states have call predecessors, (13), 4 states have return successors, (12), 4 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:42:02,331 INFO L276 IsEmpty]: Start isEmpty. Operand 2586 states and 4150 transitions. [2022-11-25 23:42:02,334 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-25 23:42:02,334 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:02,334 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:02,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:42:02,335 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:02,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:02,336 INFO L85 PathProgramCache]: Analyzing trace with hash 1744562315, now seen corresponding path program 1 times [2022-11-25 23:42:02,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:02,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1884042236] [2022-11-25 23:42:02,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:02,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:02,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:02,710 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:42:02,711 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:02,711 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1884042236] [2022-11-25 23:42:02,711 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1884042236] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:02,713 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:02,713 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:42:02,713 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454602449] [2022-11-25 23:42:02,713 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:02,714 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:42:02,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:02,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:42:02,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:42:02,716 INFO L87 Difference]: Start difference. First operand 2586 states and 4150 transitions. Second operand has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-25 23:42:05,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:05,706 INFO L93 Difference]: Finished difference Result 5886 states and 9503 transitions. [2022-11-25 23:42:05,707 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:42:05,707 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) Word has length 80 [2022-11-25 23:42:05,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:05,739 INFO L225 Difference]: With dead ends: 5886 [2022-11-25 23:42:05,739 INFO L226 Difference]: Without dead ends: 3938 [2022-11-25 23:42:05,757 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 [2022-11-25 23:42:05,759 INFO L413 NwaCegarLoop]: 527 mSDtfsCounter, 2917 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 2210 mSolverCounterSat, 1308 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3082 SdHoareTripleChecker+Valid, 1194 SdHoareTripleChecker+Invalid, 3518 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1308 IncrementalHoareTripleChecker+Valid, 2210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:05,759 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3082 Valid, 1194 Invalid, 3518 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1308 Valid, 2210 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 23:42:05,765 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3938 states. [2022-11-25 23:42:06,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3938 to 3762. [2022-11-25 23:42:06,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3762 states, 2652 states have (on average 1.5346907993966818) internal successors, (4070), 2783 states have internal predecessors, (4070), 847 states have call successors, (847), 210 states have call predecessors, (847), 262 states have return successors, (1015), 859 states have call predecessors, (1015), 842 states have call successors, (1015) [2022-11-25 23:42:06,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3762 states to 3762 states and 5932 transitions. [2022-11-25 23:42:06,489 INFO L78 Accepts]: Start accepts. Automaton has 3762 states and 5932 transitions. Word has length 80 [2022-11-25 23:42:06,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:06,490 INFO L495 AbstractCegarLoop]: Abstraction has 3762 states and 5932 transitions. [2022-11-25 23:42:06,490 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.5) internal successors, (52), 8 states have internal predecessors, (52), 8 states have call successors, (14), 4 states have call predecessors, (14), 3 states have return successors, (13), 7 states have call predecessors, (13), 7 states have call successors, (13) [2022-11-25 23:42:06,490 INFO L276 IsEmpty]: Start isEmpty. Operand 3762 states and 5932 transitions. [2022-11-25 23:42:06,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-25 23:42:06,493 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:06,493 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:06,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:42:06,494 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:06,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:06,494 INFO L85 PathProgramCache]: Analyzing trace with hash -1823694632, now seen corresponding path program 1 times [2022-11-25 23:42:06,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:06,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313174822] [2022-11-25 23:42:06,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:06,495 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:06,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:06,814 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-11-25 23:42:06,815 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:06,815 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313174822] [2022-11-25 23:42:06,815 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313174822] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:06,815 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:06,815 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:42:06,816 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [753797468] [2022-11-25 23:42:06,816 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:06,817 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:42:06,817 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:06,818 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:42:06,818 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:42:06,819 INFO L87 Difference]: Start difference. First operand 3762 states and 5932 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 23:42:09,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:09,559 INFO L93 Difference]: Finished difference Result 7165 states and 11361 transitions. [2022-11-25 23:42:09,566 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:42:09,566 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 81 [2022-11-25 23:42:09,567 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:09,594 INFO L225 Difference]: With dead ends: 7165 [2022-11-25 23:42:09,594 INFO L226 Difference]: Without dead ends: 4268 [2022-11-25 23:42:09,608 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 [2022-11-25 23:42:09,609 INFO L413 NwaCegarLoop]: 377 mSDtfsCounter, 991 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2468 mSolverCounterSat, 392 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1067 SdHoareTripleChecker+Valid, 1610 SdHoareTripleChecker+Invalid, 2860 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 392 IncrementalHoareTripleChecker+Valid, 2468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:09,609 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1067 Valid, 1610 Invalid, 2860 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [392 Valid, 2468 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 23:42:09,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4268 states. [2022-11-25 23:42:10,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4268 to 3843. [2022-11-25 23:42:10,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 2706 states have (on average 1.5284552845528456) internal successors, (4136), 2849 states have internal predecessors, (4136), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-25 23:42:10,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 6035 transitions. [2022-11-25 23:42:10,117 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 6035 transitions. Word has length 81 [2022-11-25 23:42:10,118 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:10,118 INFO L495 AbstractCegarLoop]: Abstraction has 3843 states and 6035 transitions. [2022-11-25 23:42:10,119 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-25 23:42:10,120 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 6035 transitions. [2022-11-25 23:42:10,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-25 23:42:10,122 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:10,123 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:10,123 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:42:10,123 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:10,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:10,124 INFO L85 PathProgramCache]: Analyzing trace with hash -1646512634, now seen corresponding path program 1 times [2022-11-25 23:42:10,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:10,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [399582956] [2022-11-25 23:42:10,125 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:10,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:10,391 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:42:10,392 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:10,392 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [399582956] [2022-11-25 23:42:10,392 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [399582956] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:10,392 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:10,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:42:10,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076779425] [2022-11-25 23:42:10,393 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:10,394 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:42:10,394 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:10,394 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:42:10,395 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:42:10,395 INFO L87 Difference]: Start difference. First operand 3843 states and 6035 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:42:11,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:11,401 INFO L93 Difference]: Finished difference Result 3947 states and 6197 transitions. [2022-11-25 23:42:11,401 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:42:11,402 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 86 [2022-11-25 23:42:11,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:11,431 INFO L225 Difference]: With dead ends: 3947 [2022-11-25 23:42:11,431 INFO L226 Difference]: Without dead ends: 3932 [2022-11-25 23:42:11,434 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:42:11,435 INFO L413 NwaCegarLoop]: 546 mSDtfsCounter, 676 mSDsluCounter, 904 mSDsCounter, 0 mSdLazyCounter, 313 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 677 SdHoareTripleChecker+Valid, 1450 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 313 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:11,436 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [677 Valid, 1450 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 313 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:42:11,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3932 states. [2022-11-25 23:42:11,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3932 to 3849. [2022-11-25 23:42:11,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2712 states have (on average 1.5272861356932153) internal successors, (4142), 2855 states have internal predecessors, (4142), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-25 23:42:11,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6041 transitions. [2022-11-25 23:42:11,920 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6041 transitions. Word has length 86 [2022-11-25 23:42:11,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:11,921 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6041 transitions. [2022-11-25 23:42:11,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (15), 2 states have call predecessors, (15), 2 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-25 23:42:11,921 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6041 transitions. [2022-11-25 23:42:11,923 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-25 23:42:11,924 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:11,924 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:11,924 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:42:11,924 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:11,925 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:11,925 INFO L85 PathProgramCache]: Analyzing trace with hash -362638526, now seen corresponding path program 1 times [2022-11-25 23:42:11,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:11,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414689175] [2022-11-25 23:42:11,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:11,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:11,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:12,223 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:42:12,223 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:12,223 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414689175] [2022-11-25 23:42:12,224 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1414689175] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:12,224 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:12,224 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:42:12,224 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1027407067] [2022-11-25 23:42:12,224 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:12,225 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:42:12,225 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:12,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:42:12,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:42:12,226 INFO L87 Difference]: Start difference. First operand 3849 states and 6041 transitions. Second operand has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-25 23:42:12,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:12,808 INFO L93 Difference]: Finished difference Result 3870 states and 6068 transitions. [2022-11-25 23:42:12,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:42:12,809 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) Word has length 90 [2022-11-25 23:42:12,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:12,839 INFO L225 Difference]: With dead ends: 3870 [2022-11-25 23:42:12,840 INFO L226 Difference]: Without dead ends: 3855 [2022-11-25 23:42:12,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:42:12,844 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 41 mSDsluCounter, 2146 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 2695 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:12,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 2695 Invalid, 184 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:42:12,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3855 states. [2022-11-25 23:42:13,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3855 to 3849. [2022-11-25 23:42:13,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3849 states, 2712 states have (on average 1.5243362831858407) internal successors, (4134), 2855 states have internal predecessors, (4134), 850 states have call successors, (850), 225 states have call predecessors, (850), 286 states have return successors, (1049), 859 states have call predecessors, (1049), 845 states have call successors, (1049) [2022-11-25 23:42:13,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3849 states to 3849 states and 6033 transitions. [2022-11-25 23:42:13,294 INFO L78 Accepts]: Start accepts. Automaton has 3849 states and 6033 transitions. Word has length 90 [2022-11-25 23:42:13,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:13,295 INFO L495 AbstractCegarLoop]: Abstraction has 3849 states and 6033 transitions. [2022-11-25 23:42:13,295 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 11.4) internal successors, (57), 5 states have internal predecessors, (57), 2 states have call successors, (16), 2 states have call predecessors, (16), 3 states have return successors, (15), 3 states have call predecessors, (15), 1 states have call successors, (15) [2022-11-25 23:42:13,295 INFO L276 IsEmpty]: Start isEmpty. Operand 3849 states and 6033 transitions. [2022-11-25 23:42:13,298 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-25 23:42:13,298 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:13,298 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, 1, 1, 1, 1, 1] [2022-11-25 23:42:13,299 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:42:13,299 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:13,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:13,299 INFO L85 PathProgramCache]: Analyzing trace with hash 1646809079, now seen corresponding path program 1 times [2022-11-25 23:42:13,300 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:13,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2110343205] [2022-11-25 23:42:13,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:13,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:13,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:13,551 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:42:13,551 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:13,551 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2110343205] [2022-11-25 23:42:13,551 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2110343205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:13,552 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:42:13,552 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:42:13,552 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373021090] [2022-11-25 23:42:13,552 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:13,553 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:42:13,553 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:13,554 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:42:13,554 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:42:13,554 INFO L87 Difference]: Start difference. First operand 3849 states and 6033 transitions. Second operand has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 23:42:15,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:15,997 INFO L93 Difference]: Finished difference Result 10848 states and 17263 transitions. [2022-11-25 23:42:15,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:42:15,997 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) Word has length 97 [2022-11-25 23:42:15,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:16,051 INFO L225 Difference]: With dead ends: 10848 [2022-11-25 23:42:16,051 INFO L226 Difference]: Without dead ends: 7018 [2022-11-25 23:42:16,075 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:42:16,076 INFO L413 NwaCegarLoop]: 321 mSDtfsCounter, 1163 mSDsluCounter, 388 mSDsCounter, 0 mSdLazyCounter, 935 mSolverCounterSat, 361 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1234 SdHoareTripleChecker+Valid, 709 SdHoareTripleChecker+Invalid, 1296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 361 IncrementalHoareTripleChecker+Valid, 935 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:16,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1234 Valid, 709 Invalid, 1296 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [361 Valid, 935 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-11-25 23:42:16,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7018 states. [2022-11-25 23:42:16,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7018 to 6568. [2022-11-25 23:42:16,850 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6568 states, 4666 states have (on average 1.5327903986283755) internal successors, (7152), 4912 states have internal predecessors, (7152), 1417 states have call successors, (1417), 363 states have call predecessors, (1417), 484 states have return successors, (1831), 1414 states have call predecessors, (1831), 1412 states have call successors, (1831) [2022-11-25 23:42:16,886 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6568 states to 6568 states and 10400 transitions. [2022-11-25 23:42:16,888 INFO L78 Accepts]: Start accepts. Automaton has 6568 states and 10400 transitions. Word has length 97 [2022-11-25 23:42:16,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:16,888 INFO L495 AbstractCegarLoop]: Abstraction has 6568 states and 10400 transitions. [2022-11-25 23:42:16,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.25) internal successors, (61), 4 states have internal predecessors, (61), 4 states have call successors, (17), 3 states have call predecessors, (17), 2 states have return successors, (16), 3 states have call predecessors, (16), 3 states have call successors, (16) [2022-11-25 23:42:16,889 INFO L276 IsEmpty]: Start isEmpty. Operand 6568 states and 10400 transitions. [2022-11-25 23:42:16,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 23:42:16,899 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:16,899 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, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:16,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:42:16,899 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:16,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:16,900 INFO L85 PathProgramCache]: Analyzing trace with hash -488662682, now seen corresponding path program 1 times [2022-11-25 23:42:16,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:16,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [190173191] [2022-11-25 23:42:16,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:16,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:16,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:18,129 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:42:18,129 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:18,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [190173191] [2022-11-25 23:42:18,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [190173191] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:18,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2128000264] [2022-11-25 23:42:18,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:18,130 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:18,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:18,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:18,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:42:18,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:18,505 INFO L263 TraceCheckSpWp]: Trace formula consists of 1469 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 23:42:18,516 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:19,570 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:42:19,570 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 23:42:19,570 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2128000264] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:42:19,570 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 23:42:19,571 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [16] total 21 [2022-11-25 23:42:19,571 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1354761812] [2022-11-25 23:42:19,571 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:42:19,572 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:42:19,572 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:42:19,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:42:19,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=373, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:42:19,573 INFO L87 Difference]: Start difference. First operand 6568 states and 10400 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:42:22,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:42:22,920 INFO L93 Difference]: Finished difference Result 14380 states and 22728 transitions. [2022-11-25 23:42:22,920 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:42:22,920 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) Word has length 98 [2022-11-25 23:42:22,921 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:42:22,980 INFO L225 Difference]: With dead ends: 14380 [2022-11-25 23:42:22,980 INFO L226 Difference]: Without dead ends: 7828 [2022-11-25 23:42:23,013 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=57, Invalid=449, Unknown=0, NotChecked=0, Total=506 [2022-11-25 23:42:23,014 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 836 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 1999 mSolverCounterSat, 359 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 836 SdHoareTripleChecker+Valid, 1686 SdHoareTripleChecker+Invalid, 2358 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 359 IncrementalHoareTripleChecker+Valid, 1999 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:42:23,015 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [836 Valid, 1686 Invalid, 2358 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [359 Valid, 1999 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-25 23:42:23,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7828 states. [2022-11-25 23:42:24,157 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7828 to 7778. [2022-11-25 23:42:24,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7778 states, 5532 states have (on average 1.5258496023138106) internal successors, (8441), 5806 states have internal predecessors, (8441), 1673 states have call successors, (1673), 436 states have call predecessors, (1673), 572 states have return successors, (2143), 1658 states have call predecessors, (2143), 1668 states have call successors, (2143) [2022-11-25 23:42:24,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7778 states to 7778 states and 12257 transitions. [2022-11-25 23:42:24,217 INFO L78 Accepts]: Start accepts. Automaton has 7778 states and 12257 transitions. Word has length 98 [2022-11-25 23:42:24,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:42:24,218 INFO L495 AbstractCegarLoop]: Abstraction has 7778 states and 12257 transitions. [2022-11-25 23:42:24,218 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 6 states have internal predecessors, (62), 5 states have call successors, (17), 4 states have call predecessors, (17), 3 states have return successors, (16), 4 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:42:24,218 INFO L276 IsEmpty]: Start isEmpty. Operand 7778 states and 12257 transitions. [2022-11-25 23:42:24,223 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-25 23:42:24,223 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:42:24,223 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:42:24,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 23:42:24,433 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:24,433 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:42:24,434 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:42:24,434 INFO L85 PathProgramCache]: Analyzing trace with hash 2013816114, now seen corresponding path program 1 times [2022-11-25 23:42:24,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:42:24,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [37304588] [2022-11-25 23:42:24,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:24,435 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:42:24,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:25,330 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:42:25,330 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:42:25,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [37304588] [2022-11-25 23:42:25,330 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [37304588] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:42:25,330 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1482538946] [2022-11-25 23:42:25,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:42:25,331 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:42:25,331 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:42:25,332 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:42:25,367 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:42:25,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:42:25,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 1474 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 23:42:25,771 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:42:28,405 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-11-25 23:42:28,405 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:42:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2022-11-25 23:42:31,701 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1482538946] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:42:31,702 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1015506531] [2022-11-25 23:42:31,733 INFO L159 IcfgInterpreter]: Started Sifa with 95 locations of interest [2022-11-25 23:42:31,733 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:42:31,737 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:42:31,744 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:42:31,744 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:42:39,086 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-25 23:44:24,682 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-25 23:44:38,379 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 114 for LOIs [2022-11-25 23:44:39,114 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 128 for LOIs [2022-11-25 23:44:39,964 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 51 for LOIs [2022-11-25 23:44:39,978 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-25 23:44:40,000 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 99 for LOIs [2022-11-25 23:44:40,014 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-25 23:44:44,741 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-25 23:44:45,489 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 453 for LOIs [2022-11-25 23:44:45,864 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 91 for LOIs [2022-11-25 23:44:46,064 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 87 for LOIs [2022-11-25 23:44:46,076 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-25 23:44:46,271 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:44:51,954 WARN L233 SmtUtils]: Spent 5.43s 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) [2022-11-25 23:45:03,766 WARN L233 SmtUtils]: Spent 5.14s on a formula simplification. DAG size of input: 553 DAG size of output: 520 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:12,446 WARN L233 SmtUtils]: Spent 8.30s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:21,073 WARN L233 SmtUtils]: Spent 8.26s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:45:31,465 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:46:42,746 WARN L233 SmtUtils]: Spent 6.78s on a formula simplification. DAG size of input: 541 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:46:49,039 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 543 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:46:55,357 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 546 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:12,789 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 555 DAG size of output: 480 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:20,024 WARN L233 SmtUtils]: Spent 6.44s on a formula simplification. DAG size of input: 555 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:27,295 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 558 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:34,897 WARN L233 SmtUtils]: Spent 6.72s on a formula simplification. DAG size of input: 561 DAG size of output: 505 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:42,731 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 567 DAG size of output: 511 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:50,941 WARN L233 SmtUtils]: Spent 7.26s on a formula simplification. DAG size of input: 583 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:47:50,945 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1015506531] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:47:50,945 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:47:50,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [67] imperfect sequences [11, 12, 12] total 94 [2022-11-25 23:47:50,946 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414787942] [2022-11-25 23:47:50,946 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:47:50,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 68 states [2022-11-25 23:47:50,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:47:50,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 68 interpolants. [2022-11-25 23:47:50,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=696, Invalid=8046, Unknown=0, NotChecked=0, Total=8742 [2022-11-25 23:47:50,951 INFO L87 Difference]: Start difference. First operand 7778 states and 12257 transitions. Second operand has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:47:58,109 WARN L233 SmtUtils]: Spent 6.34s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:05,209 WARN L233 SmtUtils]: Spent 6.71s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:12,608 WARN L233 SmtUtils]: Spent 5.61s on a formula simplification. DAG size of input: 608 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:18,939 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 620 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:26,477 WARN L233 SmtUtils]: Spent 7.12s on a formula simplification. DAG size of input: 656 DAG size of output: 620 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:34,246 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 652 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:41,437 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 635 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:48,694 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 641 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:48:56,249 WARN L233 SmtUtils]: Spent 6.99s on a formula simplification. DAG size of input: 653 DAG size of output: 618 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:49:03,998 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 662 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:49:11,975 WARN L233 SmtUtils]: Spent 7.42s on a formula simplification. DAG size of input: 666 DAG size of output: 626 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:49:19,634 WARN L233 SmtUtils]: Spent 7.13s on a formula simplification. DAG size of input: 668 DAG size of output: 628 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:49:54,949 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 559 DAG size of output: 544 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:00,250 WARN L233 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 538 DAG size of output: 529 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:05,645 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 541 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:20,817 WARN L233 SmtUtils]: Spent 5.11s on a formula simplification. DAG size of input: 543 DAG size of output: 534 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:27,028 WARN L233 SmtUtils]: Spent 5.65s on a formula simplification. DAG size of input: 561 DAG size of output: 546 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:42,575 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 552 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:49,060 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification. DAG size of input: 570 DAG size of output: 555 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:50:55,531 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 576 DAG size of output: 561 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:51:02,692 WARN L233 SmtUtils]: Spent 6.68s on a formula simplification. DAG size of input: 586 DAG size of output: 571 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:51:58,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:51:58,678 INFO L93 Difference]: Finished difference Result 16378 states and 25777 transitions. [2022-11-25 23:51:58,679 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 71 states. [2022-11-25 23:51:58,679 INFO L78 Accepts]: Start accepts. Automaton has has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) Word has length 100 [2022-11-25 23:51:58,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:51:58,731 INFO L225 Difference]: With dead ends: 16378 [2022-11-25 23:51:58,732 INFO L226 Difference]: Without dead ends: 8600 [2022-11-25 23:51:58,771 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 341 GetRequests, 214 SyntacticMatches, 6 SemanticMatches, 121 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5573 ImplicationChecksByTransitivity, 343.2s TimeCoverageRelationStatistics Valid=1093, Invalid=13913, Unknown=0, NotChecked=0, Total=15006 [2022-11-25 23:51:58,772 INFO L413 NwaCegarLoop]: 534 mSDtfsCounter, 736 mSDsluCounter, 9526 mSDsCounter, 0 mSdLazyCounter, 22506 mSolverCounterSat, 185 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 743 SdHoareTripleChecker+Valid, 10060 SdHoareTripleChecker+Invalid, 22691 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 185 IncrementalHoareTripleChecker+Valid, 22506 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:51:58,773 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [743 Valid, 10060 Invalid, 22691 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [185 Valid, 22506 Invalid, 0 Unknown, 0 Unchecked, 88.1s Time] [2022-11-25 23:51:58,783 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8600 states. [2022-11-25 23:52:00,218 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8600 to 8365. [2022-11-25 23:52:00,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8365 states, 5984 states have (on average 1.5182152406417113) internal successors, (9085), 6259 states have internal predecessors, (9085), 1762 states have call successors, (1762), 473 states have call predecessors, (1762), 618 states have return successors, (2259), 1755 states have call predecessors, (2259), 1757 states have call successors, (2259) [2022-11-25 23:52:00,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8365 states to 8365 states and 13106 transitions. [2022-11-25 23:52:00,286 INFO L78 Accepts]: Start accepts. Automaton has 8365 states and 13106 transitions. Word has length 100 [2022-11-25 23:52:00,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:00,287 INFO L495 AbstractCegarLoop]: Abstraction has 8365 states and 13106 transitions. [2022-11-25 23:52:00,287 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 68 states, 56 states have (on average 1.1428571428571428) internal successors, (64), 44 states have internal predecessors, (64), 17 states have call successors, (17), 13 states have call predecessors, (17), 13 states have return successors, (16), 16 states have call predecessors, (16), 16 states have call successors, (16) [2022-11-25 23:52:00,287 INFO L276 IsEmpty]: Start isEmpty. Operand 8365 states and 13106 transitions. [2022-11-25 23:52:00,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 23:52:00,292 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:00,292 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:00,307 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 23:52:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 23:52:00,502 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:52:00,502 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:00,502 INFO L85 PathProgramCache]: Analyzing trace with hash 1533472626, now seen corresponding path program 1 times [2022-11-25 23:52:00,502 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:00,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [905996928] [2022-11-25 23:52:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:00,503 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:00,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:00,807 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 5 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:52:00,807 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:00,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [905996928] [2022-11-25 23:52:00,807 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [905996928] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:00,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:52:00,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:52:00,808 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1547142628] [2022-11-25 23:52:00,808 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:00,809 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:52:00,809 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:00,809 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:52:00,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:52:00,810 INFO L87 Difference]: Start difference. First operand 8365 states and 13106 transitions. Second operand has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:52:02,772 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:02,772 INFO L93 Difference]: Finished difference Result 15249 states and 24123 transitions. [2022-11-25 23:52:02,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:52:02,773 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 109 [2022-11-25 23:52:02,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:02,829 INFO L225 Difference]: With dead ends: 15249 [2022-11-25 23:52:02,829 INFO L226 Difference]: Without dead ends: 9242 [2022-11-25 23:52:02,855 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 [2022-11-25 23:52:02,856 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 37 mSDsluCounter, 2890 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 3482 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 [2022-11-25 23:52:02,856 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 3482 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:52:02,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9242 states. [2022-11-25 23:52:04,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9242 to 8601. [2022-11-25 23:52:04,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8601 states, 6152 states have (on average 1.50796488946684) internal successors, (9277), 6442 states have internal predecessors, (9277), 1772 states have call successors, (1772), 473 states have call predecessors, (1772), 676 states have return successors, (2364), 1808 states have call predecessors, (2364), 1767 states have call successors, (2364) [2022-11-25 23:52:04,196 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8601 states to 8601 states and 13413 transitions. [2022-11-25 23:52:04,198 INFO L78 Accepts]: Start accepts. Automaton has 8601 states and 13413 transitions. Word has length 109 [2022-11-25 23:52:04,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:04,199 INFO L495 AbstractCegarLoop]: Abstraction has 8601 states and 13413 transitions. [2022-11-25 23:52:04,199 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.571428571428571) internal successors, (67), 5 states have internal predecessors, (67), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:52:04,200 INFO L276 IsEmpty]: Start isEmpty. Operand 8601 states and 13413 transitions. [2022-11-25 23:52:04,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 23:52:04,204 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:04,204 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:04,205 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:52:04,205 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:52:04,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:04,205 INFO L85 PathProgramCache]: Analyzing trace with hash -981974442, now seen corresponding path program 1 times [2022-11-25 23:52:04,206 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:04,206 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2109255521] [2022-11-25 23:52:04,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:04,206 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:04,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:04,479 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:52:04,479 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:04,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2109255521] [2022-11-25 23:52:04,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2109255521] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:52:04,480 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:52:04,480 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:52:04,482 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1290891325] [2022-11-25 23:52:04,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:52:04,483 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:52:04,483 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:52:04,484 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:52:04,485 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:52:04,485 INFO L87 Difference]: Start difference. First operand 8601 states and 13413 transitions. Second operand has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:52:06,361 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:52:06,361 INFO L93 Difference]: Finished difference Result 15505 states and 24429 transitions. [2022-11-25 23:52:06,362 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:52:06,362 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-25 23:52:06,363 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:52:06,422 INFO L225 Difference]: With dead ends: 15505 [2022-11-25 23:52:06,422 INFO L226 Difference]: Without dead ends: 9314 [2022-11-25 23:52:06,452 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 [2022-11-25 23:52:06,453 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 36 mSDsluCounter, 2910 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 3507 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 [2022-11-25 23:52:06,454 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 3507 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:52:06,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9314 states. [2022-11-25 23:52:08,113 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9314 to 8602. [2022-11-25 23:52:08,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8602 states, 6177 states have (on average 1.5114133074307916) internal successors, (9336), 6422 states have internal predecessors, (9336), 1784 states have call successors, (1784), 469 states have call predecessors, (1784), 640 states have return successors, (2318), 1833 states have call predecessors, (2318), 1779 states have call successors, (2318) [2022-11-25 23:52:08,173 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8602 states to 8602 states and 13438 transitions. [2022-11-25 23:52:08,175 INFO L78 Accepts]: Start accepts. Automaton has 8602 states and 13438 transitions. Word has length 110 [2022-11-25 23:52:08,176 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:52:08,176 INFO L495 AbstractCegarLoop]: Abstraction has 8602 states and 13438 transitions. [2022-11-25 23:52:08,176 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.857142857142858) internal successors, (69), 5 states have internal predecessors, (69), 2 states have call successors, (19), 2 states have call predecessors, (19), 4 states have return successors, (18), 4 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 23:52:08,176 INFO L276 IsEmpty]: Start isEmpty. Operand 8602 states and 13438 transitions. [2022-11-25 23:52:08,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2022-11-25 23:52:08,183 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:52:08,183 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:52:08,183 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:52:08,183 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:52:08,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:52:08,184 INFO L85 PathProgramCache]: Analyzing trace with hash -758354937, now seen corresponding path program 1 times [2022-11-25 23:52:08,184 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:52:08,185 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [586297743] [2022-11-25 23:52:08,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:08,185 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:52:08,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:08,947 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:52:08,948 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:52:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [586297743] [2022-11-25 23:52:08,948 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [586297743] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:52:08,948 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [83404966] [2022-11-25 23:52:08,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:52:08,948 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:52:08,949 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:52:08,950 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:52:08,973 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3053dba0-f05f-42f5-a926-6753aef75fb4/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 23:52:09,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:52:09,478 INFO L263 TraceCheckSpWp]: Trace formula consists of 1568 conjuncts, 29 conjunts are in the unsatisfiable core [2022-11-25 23:52:09,489 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:52:09,803 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:52:09,803 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:52:10,766 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-11-25 23:52:10,767 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [83404966] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:52:10,767 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [351862495] [2022-11-25 23:52:10,771 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-11-25 23:52:10,772 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:52:10,772 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:52:10,773 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:52:10,773 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:52:14,882 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 588 for LOIs [2022-11-25 23:52:16,320 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 588 for LOIs [2022-11-25 23:52:27,389 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 113 for LOIs [2022-11-25 23:52:28,327 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 111 for LOIs [2022-11-25 23:52:29,024 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 101 for LOIs [2022-11-25 23:52:29,039 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 533 for LOIs [2022-11-25 23:52:29,320 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 87 for LOIs [2022-11-25 23:52:29,339 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 581 for LOIs [2022-11-25 23:52:33,859 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 585 for LOIs [2022-11-25 23:52:34,553 INFO L197 IcfgInterpreter]: Interpreting procedure getReverseHeading with input of size 87 for LOIs [2022-11-25 23:52:34,563 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 513 for LOIs [2022-11-25 23:52:34,748 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:52:51,565 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 553 DAG size of output: 520 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:53:00,875 WARN L233 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:53:09,254 WARN L233 SmtUtils]: Spent 7.98s on a formula simplification. DAG size of input: 653 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:53:19,353 WARN L233 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 780 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:19,175 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [351862495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:54:19,175 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:54:19,175 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [46] imperfect sequences [13, 13, 13] total 72 [2022-11-25 23:54:19,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174802968] [2022-11-25 23:54:19,176 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:54:19,176 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 47 states [2022-11-25 23:54:19,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:54:19,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 47 interpolants. [2022-11-25 23:54:19,179 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=489, Invalid=4623, Unknown=0, NotChecked=0, Total=5112 [2022-11-25 23:54:19,179 INFO L87 Difference]: Start difference. First operand 8602 states and 13438 transitions. Second operand has 47 states, 34 states have (on average 2.1176470588235294) internal successors, (72), 29 states have internal predecessors, (72), 14 states have call successors, (20), 11 states have call predecessors, (20), 10 states have return successors, (19), 11 states have call predecessors, (19), 14 states have call successors, (19) [2022-11-25 23:54:26,670 WARN L233 SmtUtils]: Spent 6.84s on a formula simplification. DAG size of input: 618 DAG size of output: 583 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:34,258 WARN L233 SmtUtils]: Spent 7.21s on a formula simplification. DAG size of input: 624 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:43,707 WARN L233 SmtUtils]: Spent 8.08s on a formula simplification. DAG size of input: 661 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:52,303 WARN L233 SmtUtils]: Spent 8.16s on a formula simplification. DAG size of input: 673 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:54:59,648 WARN L233 SmtUtils]: Spent 6.94s on a formula simplification. DAG size of input: 656 DAG size of output: 620 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)