./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 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_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/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_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/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_7dd2b434-7c44-4581-8d58-588fae6f0daf/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 b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-26 00:01:02,743 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-26 00:01:02,746 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-26 00:01:02,799 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-26 00:01:02,800 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-26 00:01:02,804 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-26 00:01:02,808 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-26 00:01:02,812 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-26 00:01:02,815 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-26 00:01:02,821 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-26 00:01:02,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-26 00:01:02,826 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-26 00:01:02,828 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-26 00:01:02,831 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-26 00:01:02,834 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-26 00:01:02,836 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-26 00:01:02,841 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-26 00:01:02,842 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-26 00:01:02,844 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-26 00:01:02,852 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-26 00:01:02,855 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-26 00:01:02,858 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-26 00:01:02,860 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-26 00:01:02,861 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-26 00:01:02,872 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-26 00:01:02,874 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-26 00:01:02,875 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-26 00:01:02,876 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-26 00:01:02,878 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-26 00:01:02,879 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-26 00:01:02,880 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-26 00:01:02,881 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-26 00:01:02,883 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-26 00:01:02,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-26 00:01:02,888 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-26 00:01:02,888 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-26 00:01:02,889 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-26 00:01:02,890 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-26 00:01:02,890 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-26 00:01:02,892 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-26 00:01:02,893 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-26 00:01:02,899 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-26 00:01:02,947 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-26 00:01:02,947 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-26 00:01:02,948 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-26 00:01:02,949 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-26 00:01:02,950 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-26 00:01:02,950 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-26 00:01:02,951 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-26 00:01:02,951 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-26 00:01:02,952 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-26 00:01:02,952 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-26 00:01:02,953 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-26 00:01:02,954 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-26 00:01:02,954 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-26 00:01:02,955 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-26 00:01:02,955 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-26 00:01:02,955 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-26 00:01:02,956 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-26 00:01:02,956 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-26 00:01:02,957 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-26 00:01:02,958 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-26 00:01:02,958 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-26 00:01:02,959 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-26 00:01:02,959 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-26 00:01:02,959 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-26 00:01:02,960 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-26 00:01:02,960 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-26 00:01:02,961 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-26 00:01:02,961 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-26 00:01:02,962 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-26 00:01:02,962 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-26 00:01:02,963 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-26 00:01:02,963 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-26 00:01:02,964 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:01:02,964 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-26 00:01:02,964 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-26 00:01:02,965 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-26 00:01:02,965 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-26 00:01:02,965 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-26 00:01:02,965 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-26 00:01:02,966 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-26 00:01:02,966 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-26 00:01:02,966 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_7dd2b434-7c44-4581-8d58-588fae6f0daf/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b57471ff7da280977e3c808cc9c84e84708264492bfd0c5193cf422adb691b70 [2022-11-26 00:01:03,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-26 00:01:03,365 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-26 00:01:03,369 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-26 00:01:03,370 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-26 00:01:03,370 INFO L275 PluginConnector]: CDTParser initialized [2022-11-26 00:01:03,371 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-11-26 00:01:06,493 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-26 00:01:06,795 INFO L351 CDTParser]: Found 1 translation units. [2022-11-26 00:01:06,796 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c [2022-11-26 00:01:06,821 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/data/604bec33e/aab2c2a60fa64ecd80ca12afaf9b0f24/FLAGb25d623d5 [2022-11-26 00:01:06,838 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/data/604bec33e/aab2c2a60fa64ecd80ca12afaf9b0f24 [2022-11-26 00:01:06,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-26 00:01:06,842 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-26 00:01:06,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-26 00:01:06,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-26 00:01:06,847 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-26 00:01:06,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:06" (1/1) ... [2022-11-26 00:01:06,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@689ca3a2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:06, skipping insertion in model container [2022-11-26 00:01:06,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.11 12:01:06" (1/1) ... [2022-11-26 00:01:06,858 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-26 00:01:06,929 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-26 00:01:07,402 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_7dd2b434-7c44-4581-8d58-588fae6f0daf/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2022-11-26 00:01:07,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:01:07,437 INFO L203 MainTranslator]: Completed pre-run [2022-11-26 00:01:07,605 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_7dd2b434-7c44-4581-8d58-588fae6f0daf/sv-benchmarks/c/product-lines/elevator_spec1_product21.cil.c[66510,66523] [2022-11-26 00:01:07,611 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-26 00:01:07,636 INFO L208 MainTranslator]: Completed translation [2022-11-26 00:01:07,637 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07 WrapperNode [2022-11-26 00:01:07,637 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-26 00:01:07,638 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-26 00:01:07,639 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-26 00:01:07,639 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-26 00:01:07,646 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,729 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,798 INFO L138 Inliner]: procedures = 92, calls = 340, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 850 [2022-11-26 00:01:07,799 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-26 00:01:07,799 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-26 00:01:07,800 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-26 00:01:07,800 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-26 00:01:07,811 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,811 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,817 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,853 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,886 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,891 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,913 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-26 00:01:07,914 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-26 00:01:07,914 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-26 00:01:07,914 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-26 00:01:07,915 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (1/1) ... [2022-11-26 00:01:07,940 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-26 00:01:07,957 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:01:07,979 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-26 00:01:07,993 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-26 00:01:08,023 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-26 00:01:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-26 00:01:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-26 00:01:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-26 00:01:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-26 00:01:08,024 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-26 00:01:08,024 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-26 00:01:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-26 00:01:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-26 00:01:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-26 00:01:08,025 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-26 00:01:08,025 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-26 00:01:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-26 00:01:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-26 00:01:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-26 00:01:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-26 00:01:08,026 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-26 00:01:08,026 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-26 00:01:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-26 00:01:08,027 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-26 00:01:08,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-26 00:01:08,028 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-26 00:01:08,029 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-26 00:01:08,029 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-26 00:01:08,030 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-26 00:01:08,030 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-26 00:01:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-26 00:01:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-26 00:01:08,031 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-26 00:01:08,031 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-26 00:01:08,034 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-26 00:01:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-26 00:01:08,034 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-26 00:01:08,034 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-26 00:01:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-26 00:01:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-26 00:01:08,035 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-26 00:01:08,035 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-26 00:01:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-26 00:01:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-26 00:01:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-26 00:01:08,036 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-26 00:01:08,036 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-26 00:01:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-26 00:01:08,037 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-26 00:01:08,037 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-26 00:01:08,039 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-26 00:01:08,039 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-26 00:01:08,040 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-26 00:01:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-26 00:01:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-26 00:01:08,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-26 00:01:08,042 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-26 00:01:08,043 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-26 00:01:08,221 INFO L235 CfgBuilder]: Building ICFG [2022-11-26 00:01:08,224 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-26 00:01:09,754 INFO L276 CfgBuilder]: Performing block encoding [2022-11-26 00:01:10,817 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-26 00:01:10,818 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-26 00:01:10,823 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:10 BoogieIcfgContainer [2022-11-26 00:01:10,824 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-26 00:01:10,829 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-26 00:01:10,829 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-26 00:01:10,833 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-26 00:01:10,833 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.11 12:01:06" (1/3) ... [2022-11-26 00:01:10,836 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea6ca4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:10, skipping insertion in model container [2022-11-26 00:01:10,836 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.11 12:01:07" (2/3) ... [2022-11-26 00:01:10,838 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4ea6ca4b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.11 12:01:10, skipping insertion in model container [2022-11-26 00:01:10,838 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.11 12:01:10" (3/3) ... [2022-11-26 00:01:10,842 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product21.cil.c [2022-11-26 00:01:10,866 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-26 00:01:10,866 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-26 00:01:10,961 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-26 00:01:10,969 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;@3a791f96, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-26 00:01:10,970 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-26 00:01:10,981 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) [2022-11-26 00:01:11,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-26 00:01:11,018 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:11,019 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:11,020 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:11,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:11,041 INFO L85 PathProgramCache]: Analyzing trace with hash 1790014537, now seen corresponding path program 1 times [2022-11-26 00:01:11,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:11,053 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1437165170] [2022-11-26 00:01:11,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:11,055 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:11,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:12,267 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:01:12,268 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:12,268 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1437165170] [2022-11-26 00:01:12,269 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1437165170] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:12,269 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:12,270 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-26 00:01:12,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2046730810] [2022-11-26 00:01:12,273 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:12,279 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-26 00:01:12,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:12,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-26 00:01:12,339 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-26 00:01:12,343 INFO L87 Difference]: Start difference. First operand has 381 states, 256 states have (on average 1.58984375) internal successors, (407), 277 states have internal predecessors, (407), 98 states have call successors, (98), 25 states have call predecessors, (98), 25 states have return successors, (98), 92 states have call predecessors, (98), 98 states have call successors, (98) Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:01:13,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:13,153 INFO L93 Difference]: Finished difference Result 851 states and 1377 transitions. [2022-11-26 00:01:13,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:01:13,156 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) Word has length 76 [2022-11-26 00:01:13,157 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:13,190 INFO L225 Difference]: With dead ends: 851 [2022-11-26 00:01:13,191 INFO L226 Difference]: Without dead ends: 490 [2022-11-26 00:01:13,205 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 [2022-11-26 00:01:13,214 INFO L413 NwaCegarLoop]: 651 mSDtfsCounter, 282 mSDsluCounter, 1693 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 282 SdHoareTripleChecker+Valid, 2344 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 148 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:13,216 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [282 Valid, 2344 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [148 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-26 00:01:13,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 490 states. [2022-11-26 00:01:13,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 490 to 380. [2022-11-26 00:01:13,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 380 states, 257 states have (on average 1.5719844357976653) internal successors, (404), 276 states have internal predecessors, (404), 98 states have call successors, (98), 25 states have call predecessors, (98), 24 states have return successors, (93), 91 states have call predecessors, (93), 93 states have call successors, (93) [2022-11-26 00:01:13,364 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 380 states to 380 states and 595 transitions. [2022-11-26 00:01:13,366 INFO L78 Accepts]: Start accepts. Automaton has 380 states and 595 transitions. Word has length 76 [2022-11-26 00:01:13,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:13,367 INFO L495 AbstractCegarLoop]: Abstraction has 380 states and 595 transitions. [2022-11-26 00:01:13,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 2 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (13), 2 states have call predecessors, (13), 2 states have call successors, (13) [2022-11-26 00:01:13,368 INFO L276 IsEmpty]: Start isEmpty. Operand 380 states and 595 transitions. [2022-11-26 00:01:13,374 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 80 [2022-11-26 00:01:13,374 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:13,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:13,375 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-26 00:01:13,375 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:13,376 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:13,376 INFO L85 PathProgramCache]: Analyzing trace with hash -798954435, now seen corresponding path program 1 times [2022-11-26 00:01:13,376 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:13,377 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [598564332] [2022-11-26 00:01:13,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:13,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:13,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:14,188 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:14,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:14,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [598564332] [2022-11-26 00:01:14,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [598564332] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:14,190 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:14,191 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:01:14,191 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [597497397] [2022-11-26 00:01:14,191 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:14,194 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:01:14,194 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:14,195 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:01:14,195 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:01:14,196 INFO L87 Difference]: Start difference. First operand 380 states and 595 transitions. Second operand has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-26 00:01:18,817 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:18,817 INFO L93 Difference]: Finished difference Result 1287 states and 2054 transitions. [2022-11-26 00:01:18,818 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-26 00:01:18,818 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) Word has length 79 [2022-11-26 00:01:18,819 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:18,829 INFO L225 Difference]: With dead ends: 1287 [2022-11-26 00:01:18,829 INFO L226 Difference]: Without dead ends: 930 [2022-11-26 00:01:18,838 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 [2022-11-26 00:01:18,842 INFO L413 NwaCegarLoop]: 398 mSDtfsCounter, 1740 mSDsluCounter, 2132 mSDsCounter, 0 mSdLazyCounter, 3981 mSolverCounterSat, 593 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1805 SdHoareTripleChecker+Valid, 2530 SdHoareTripleChecker+Invalid, 4574 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 593 IncrementalHoareTripleChecker+Valid, 3981 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:18,842 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1805 Valid, 2530 Invalid, 4574 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [593 Valid, 3981 Invalid, 0 Unknown, 0 Unchecked, 4.1s Time] [2022-11-26 00:01:18,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2022-11-26 00:01:18,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 874. [2022-11-26 00:01:18,934 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 874 states, 614 states have (on average 1.5944625407166124) internal successors, (979), 645 states have internal predecessors, (979), 206 states have call successors, (206), 49 states have call predecessors, (206), 53 states have return successors, (213), 204 states have call predecessors, (213), 201 states have call successors, (213) [2022-11-26 00:01:18,942 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 874 states to 874 states and 1398 transitions. [2022-11-26 00:01:18,943 INFO L78 Accepts]: Start accepts. Automaton has 874 states and 1398 transitions. Word has length 79 [2022-11-26 00:01:18,943 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:18,944 INFO L495 AbstractCegarLoop]: Abstraction has 874 states and 1398 transitions. [2022-11-26 00:01:18,944 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.222222222222222) internal successors, (47), 9 states have internal predecessors, (47), 6 states have call successors, (15), 3 states have call predecessors, (15), 4 states have return successors, (14), 6 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-26 00:01:18,944 INFO L276 IsEmpty]: Start isEmpty. Operand 874 states and 1398 transitions. [2022-11-26 00:01:18,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-26 00:01:18,948 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:18,949 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:18,949 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-26 00:01:18,949 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:18,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:18,950 INFO L85 PathProgramCache]: Analyzing trace with hash -2051632693, now seen corresponding path program 1 times [2022-11-26 00:01:18,950 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:18,951 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459695854] [2022-11-26 00:01:18,951 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:18,951 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:19,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:19,421 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:19,421 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:19,421 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459695854] [2022-11-26 00:01:19,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459695854] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:19,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:19,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:01:19,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1814633634] [2022-11-26 00:01:19,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:19,423 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:01:19,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:19,424 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:01:19,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:01:19,425 INFO L87 Difference]: Start difference. First operand 874 states and 1398 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:19,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:19,792 INFO L93 Difference]: Finished difference Result 1477 states and 2374 transitions. [2022-11-26 00:01:19,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:01:19,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-26 00:01:19,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:19,805 INFO L225 Difference]: With dead ends: 1477 [2022-11-26 00:01:19,806 INFO L226 Difference]: Without dead ends: 963 [2022-11-26 00:01:19,811 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 [2022-11-26 00:01:19,818 INFO L413 NwaCegarLoop]: 602 mSDtfsCounter, 42 mSDsluCounter, 2931 mSDsCounter, 0 mSdLazyCounter, 264 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 3533 SdHoareTripleChecker+Invalid, 266 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 264 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:19,820 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 3533 Invalid, 266 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 264 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-26 00:01:19,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 963 states. [2022-11-26 00:01:19,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 963 to 895. [2022-11-26 00:01:19,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 895 states, 629 states have (on average 1.5802861685214626) internal successors, (994), 660 states have internal predecessors, (994), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 210 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-26 00:01:19,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 895 states to 895 states and 1428 transitions. [2022-11-26 00:01:19,931 INFO L78 Accepts]: Start accepts. Automaton has 895 states and 1428 transitions. Word has length 83 [2022-11-26 00:01:19,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:19,932 INFO L495 AbstractCegarLoop]: Abstraction has 895 states and 1428 transitions. [2022-11-26 00:01:19,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 5 states have internal predecessors, (49), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:19,933 INFO L276 IsEmpty]: Start isEmpty. Operand 895 states and 1428 transitions. [2022-11-26 00:01:19,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-26 00:01:19,936 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:19,936 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:19,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-26 00:01:19,937 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:19,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:19,937 INFO L85 PathProgramCache]: Analyzing trace with hash 492286256, now seen corresponding path program 1 times [2022-11-26 00:01:19,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:19,938 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [676289780] [2022-11-26 00:01:19,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:19,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:19,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:20,336 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:20,337 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:20,337 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [676289780] [2022-11-26 00:01:20,337 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [676289780] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:20,337 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:20,338 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:01:20,338 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886485347] [2022-11-26 00:01:20,338 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:20,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:01:20,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:20,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:01:20,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:01:20,342 INFO L87 Difference]: Start difference. First operand 895 states and 1428 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:20,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:20,710 INFO L93 Difference]: Finished difference Result 1506 states and 2412 transitions. [2022-11-26 00:01:20,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:01:20,717 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2022-11-26 00:01:20,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:20,725 INFO L225 Difference]: With dead ends: 1506 [2022-11-26 00:01:20,725 INFO L226 Difference]: Without dead ends: 978 [2022-11-26 00:01:20,731 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 [2022-11-26 00:01:20,737 INFO L413 NwaCegarLoop]: 606 mSDtfsCounter, 41 mSDsluCounter, 2946 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 3552 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:20,739 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 3552 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:01:20,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 978 states. [2022-11-26 00:01:20,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 978 to 898. [2022-11-26 00:01:20,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 898 states, 632 states have (on average 1.5775316455696202) internal successors, (997), 660 states have internal predecessors, (997), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 213 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-26 00:01:20,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 898 states to 898 states and 1431 transitions. [2022-11-26 00:01:20,819 INFO L78 Accepts]: Start accepts. Automaton has 898 states and 1431 transitions. Word has length 84 [2022-11-26 00:01:20,820 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:20,820 INFO L495 AbstractCegarLoop]: Abstraction has 898 states and 1431 transitions. [2022-11-26 00:01:20,820 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:20,821 INFO L276 IsEmpty]: Start isEmpty. Operand 898 states and 1431 transitions. [2022-11-26 00:01:20,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-26 00:01:20,824 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:20,825 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:20,825 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-26 00:01:20,825 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:20,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:20,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1679655152, now seen corresponding path program 1 times [2022-11-26 00:01:20,826 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:20,826 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530578915] [2022-11-26 00:01:20,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:20,827 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:20,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:21,249 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:21,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:21,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530578915] [2022-11-26 00:01:21,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1530578915] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:21,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:21,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:01:21,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [469175719] [2022-11-26 00:01:21,251 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:21,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:01:21,252 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:21,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:01:21,253 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:01:21,253 INFO L87 Difference]: Start difference. First operand 898 states and 1431 transitions. Second operand has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:21,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:21,622 INFO L93 Difference]: Finished difference Result 1511 states and 2417 transitions. [2022-11-26 00:01:21,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:01:21,623 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) Word has length 84 [2022-11-26 00:01:21,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:21,637 INFO L225 Difference]: With dead ends: 1511 [2022-11-26 00:01:21,637 INFO L226 Difference]: Without dead ends: 981 [2022-11-26 00:01:21,641 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 [2022-11-26 00:01:21,644 INFO L413 NwaCegarLoop]: 607 mSDtfsCounter, 41 mSDsluCounter, 2950 mSDsCounter, 0 mSdLazyCounter, 265 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 3557 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 265 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:21,645 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 3557 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 265 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:01:21,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 981 states. [2022-11-26 00:01:21,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 981 to 901. [2022-11-26 00:01:21,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 901 states, 635 states have (on average 1.5748031496062993) internal successors, (1000), 660 states have internal predecessors, (1000), 206 states have call successors, (206), 49 states have call predecessors, (206), 59 states have return successors, (228), 216 states have call predecessors, (228), 201 states have call successors, (228) [2022-11-26 00:01:21,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 901 states to 901 states and 1434 transitions. [2022-11-26 00:01:21,734 INFO L78 Accepts]: Start accepts. Automaton has 901 states and 1434 transitions. Word has length 84 [2022-11-26 00:01:21,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:21,735 INFO L495 AbstractCegarLoop]: Abstraction has 901 states and 1434 transitions. [2022-11-26 00:01:21,735 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.142857142857143) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-26 00:01:21,736 INFO L276 IsEmpty]: Start isEmpty. Operand 901 states and 1434 transitions. [2022-11-26 00:01:21,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-26 00:01:21,745 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:21,745 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:21,746 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-26 00:01:21,746 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:21,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:21,747 INFO L85 PathProgramCache]: Analyzing trace with hash 1136269027, now seen corresponding path program 1 times [2022-11-26 00:01:21,747 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:21,747 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1912616059] [2022-11-26 00:01:21,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:21,748 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:21,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:22,246 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:22,246 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:22,246 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1912616059] [2022-11-26 00:01:22,247 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1912616059] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:22,247 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:22,247 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:01:22,247 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1649096737] [2022-11-26 00:01:22,247 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:22,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:01:22,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:22,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:01:22,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:01:22,250 INFO L87 Difference]: Start difference. First operand 901 states and 1434 transitions. Second operand has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-26 00:01:25,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:25,691 INFO L93 Difference]: Finished difference Result 2053 states and 3286 transitions. [2022-11-26 00:01:25,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-26 00:01:25,692 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2022-11-26 00:01:25,693 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:25,709 INFO L225 Difference]: With dead ends: 2053 [2022-11-26 00:01:25,709 INFO L226 Difference]: Without dead ends: 1400 [2022-11-26 00:01:25,734 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 [2022-11-26 00:01:25,735 INFO L413 NwaCegarLoop]: 529 mSDtfsCounter, 2654 mSDsluCounter, 800 mSDsCounter, 0 mSdLazyCounter, 2686 mSolverCounterSat, 1152 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2818 SdHoareTripleChecker+Valid, 1329 SdHoareTripleChecker+Invalid, 3838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1152 IncrementalHoareTripleChecker+Valid, 2686 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.1s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:25,735 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2818 Valid, 1329 Invalid, 3838 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1152 Valid, 2686 Invalid, 0 Unknown, 0 Unchecked, 3.1s Time] [2022-11-26 00:01:25,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1400 states. [2022-11-26 00:01:25,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1400 to 1302. [2022-11-26 00:01:25,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1302 states, 904 states have (on average 1.5342920353982301) internal successors, (1387), 944 states have internal predecessors, (1387), 306 states have call successors, (306), 77 states have call predecessors, (306), 91 states have return successors, (346), 317 states have call predecessors, (346), 301 states have call successors, (346) [2022-11-26 00:01:25,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1302 states to 1302 states and 2039 transitions. [2022-11-26 00:01:25,844 INFO L78 Accepts]: Start accepts. Automaton has 1302 states and 2039 transitions. Word has length 87 [2022-11-26 00:01:25,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:25,844 INFO L495 AbstractCegarLoop]: Abstraction has 1302 states and 2039 transitions. [2022-11-26 00:01:25,845 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.625) internal successors, (53), 8 states have internal predecessors, (53), 7 states have call successors, (16), 4 states have call predecessors, (16), 3 states have return successors, (15), 7 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-26 00:01:25,845 INFO L276 IsEmpty]: Start isEmpty. Operand 1302 states and 2039 transitions. [2022-11-26 00:01:25,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2022-11-26 00:01:25,847 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:25,848 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:25,848 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-26 00:01:25,848 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:25,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:25,849 INFO L85 PathProgramCache]: Analyzing trace with hash 1430013021, now seen corresponding path program 1 times [2022-11-26 00:01:25,849 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:25,849 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885765631] [2022-11-26 00:01:25,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:25,850 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:25,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:26,165 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:26,165 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:26,165 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885765631] [2022-11-26 00:01:26,166 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885765631] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:26,166 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:26,166 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:01:26,166 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692281725] [2022-11-26 00:01:26,166 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:26,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:01:26,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:26,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:01:26,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:01:26,168 INFO L87 Difference]: Start difference. First operand 1302 states and 2039 transitions. Second operand has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-26 00:01:26,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:26,619 INFO L93 Difference]: Finished difference Result 2584 states and 4121 transitions. [2022-11-26 00:01:26,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-26 00:01:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) Word has length 90 [2022-11-26 00:01:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:26,667 INFO L225 Difference]: With dead ends: 2584 [2022-11-26 00:01:26,667 INFO L226 Difference]: Without dead ends: 1506 [2022-11-26 00:01:26,674 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:01:26,677 INFO L413 NwaCegarLoop]: 582 mSDtfsCounter, 245 mSDsluCounter, 2078 mSDsCounter, 0 mSdLazyCounter, 319 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 258 SdHoareTripleChecker+Valid, 2660 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:26,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [258 Valid, 2660 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 319 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-26 00:01:26,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1506 states. [2022-11-26 00:01:26,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1506 to 1506. [2022-11-26 00:01:26,795 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1506 states, 1092 states have (on average 1.5393772893772895) internal successors, (1681), 1138 states have internal predecessors, (1681), 311 states have call successors, (311), 82 states have call predecessors, (311), 102 states have return successors, (351), 322 states have call predecessors, (351), 306 states have call successors, (351) [2022-11-26 00:01:26,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 2343 transitions. [2022-11-26 00:01:26,805 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 2343 transitions. Word has length 90 [2022-11-26 00:01:26,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:26,806 INFO L495 AbstractCegarLoop]: Abstraction has 1506 states and 2343 transitions. [2022-11-26 00:01:26,806 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.333333333333334) internal successors, (56), 6 states have internal predecessors, (56), 4 states have call successors, (16), 2 states have call predecessors, (16), 4 states have return successors, (15), 4 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-26 00:01:26,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 2343 transitions. [2022-11-26 00:01:26,809 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2022-11-26 00:01:26,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:26,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:26,810 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-26 00:01:26,810 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:26,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:26,810 INFO L85 PathProgramCache]: Analyzing trace with hash 612290836, now seen corresponding path program 1 times [2022-11-26 00:01:26,811 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:26,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1244561100] [2022-11-26 00:01:26,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:26,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:27,137 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:27,137 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:27,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1244561100] [2022-11-26 00:01:27,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1244561100] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:27,138 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:27,138 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:01:27,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276073853] [2022-11-26 00:01:27,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:27,139 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:01:27,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:27,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:01:27,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:01:27,140 INFO L87 Difference]: Start difference. First operand 1506 states and 2343 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-26 00:01:31,080 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:31,081 INFO L93 Difference]: Finished difference Result 6203 states and 9924 transitions. [2022-11-26 00:01:31,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:01:31,082 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) Word has length 91 [2022-11-26 00:01:31,082 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:31,130 INFO L225 Difference]: With dead ends: 6203 [2022-11-26 00:01:31,130 INFO L226 Difference]: Without dead ends: 4721 [2022-11-26 00:01:31,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:01:31,148 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 2111 mSDsluCounter, 958 mSDsCounter, 0 mSdLazyCounter, 2780 mSolverCounterSat, 895 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2189 SdHoareTripleChecker+Valid, 1475 SdHoareTripleChecker+Invalid, 3675 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 895 IncrementalHoareTripleChecker+Valid, 2780 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:31,148 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2189 Valid, 1475 Invalid, 3675 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [895 Valid, 2780 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-26 00:01:31,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4721 states. [2022-11-26 00:01:31,578 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4721 to 4347. [2022-11-26 00:01:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4347 states, 3197 states have (on average 1.539255552080075) internal successors, (4921), 3329 states have internal predecessors, (4921), 859 states have call successors, (859), 226 states have call predecessors, (859), 290 states have return successors, (1081), 882 states have call predecessors, (1081), 854 states have call successors, (1081) [2022-11-26 00:01:31,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4347 states to 4347 states and 6861 transitions. [2022-11-26 00:01:31,613 INFO L78 Accepts]: Start accepts. Automaton has 4347 states and 6861 transitions. Word has length 91 [2022-11-26 00:01:31,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:31,614 INFO L495 AbstractCegarLoop]: Abstraction has 4347 states and 6861 transitions. [2022-11-26 00:01:31,614 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 5 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 6 states have call predecessors, (15), 4 states have call successors, (15) [2022-11-26 00:01:31,615 INFO L276 IsEmpty]: Start isEmpty. Operand 4347 states and 6861 transitions. [2022-11-26 00:01:31,618 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-26 00:01:31,619 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:31,619 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:31,619 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-26 00:01:31,619 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:31,620 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:31,620 INFO L85 PathProgramCache]: Analyzing trace with hash -133654052, now seen corresponding path program 1 times [2022-11-26 00:01:31,620 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:31,621 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1798213338] [2022-11-26 00:01:31,621 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:31,621 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:31,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:32,081 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-26 00:01:32,082 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:32,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1798213338] [2022-11-26 00:01:32,082 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1798213338] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:32,082 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:32,083 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-26 00:01:32,083 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15264967] [2022-11-26 00:01:32,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:32,084 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-26 00:01:32,084 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:32,085 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-26 00:01:32,085 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-26 00:01:32,086 INFO L87 Difference]: Start difference. First operand 4347 states and 6861 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-26 00:01:35,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:35,128 INFO L93 Difference]: Finished difference Result 8235 states and 13096 transitions. [2022-11-26 00:01:35,130 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-26 00:01:35,130 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 92 [2022-11-26 00:01:35,131 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:35,176 INFO L225 Difference]: With dead ends: 8235 [2022-11-26 00:01:35,176 INFO L226 Difference]: Without dead ends: 4853 [2022-11-26 00:01:35,200 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 [2022-11-26 00:01:35,203 INFO L413 NwaCegarLoop]: 381 mSDtfsCounter, 990 mSDsluCounter, 1243 mSDsCounter, 0 mSdLazyCounter, 2543 mSolverCounterSat, 399 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1066 SdHoareTripleChecker+Valid, 1624 SdHoareTripleChecker+Invalid, 2942 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 399 IncrementalHoareTripleChecker+Valid, 2543 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:35,204 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1066 Valid, 1624 Invalid, 2942 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [399 Valid, 2543 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-26 00:01:35,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4853 states. [2022-11-26 00:01:35,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4853 to 4457. [2022-11-26 00:01:35,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4457 states, 3273 states have (on average 1.5346776657500765) internal successors, (5023), 3417 states have internal predecessors, (5023), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-26 00:01:35,724 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4457 states to 4457 states and 7012 transitions. [2022-11-26 00:01:35,726 INFO L78 Accepts]: Start accepts. Automaton has 4457 states and 7012 transitions. Word has length 92 [2022-11-26 00:01:35,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:35,727 INFO L495 AbstractCegarLoop]: Abstraction has 4457 states and 7012 transitions. [2022-11-26 00:01:35,728 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 7 states have internal predecessors, (56), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-26 00:01:35,728 INFO L276 IsEmpty]: Start isEmpty. Operand 4457 states and 7012 transitions. [2022-11-26 00:01:35,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2022-11-26 00:01:35,731 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:35,732 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:35,732 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-26 00:01:35,732 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:35,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:35,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1977267992, now seen corresponding path program 1 times [2022-11-26 00:01:35,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:35,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1848199430] [2022-11-26 00:01:35,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:35,740 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:35,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:36,208 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:01:36,209 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:36,209 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1848199430] [2022-11-26 00:01:36,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1848199430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:36,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:36,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-26 00:01:36,210 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1944808426] [2022-11-26 00:01:36,210 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:36,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-26 00:01:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:36,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-26 00:01:36,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-26 00:01:36,213 INFO L87 Difference]: Start difference. First operand 4457 states and 7012 transitions. Second operand has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-26 00:01:37,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:37,302 INFO L93 Difference]: Finished difference Result 4551 states and 7164 transitions. [2022-11-26 00:01:37,302 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-26 00:01:37,303 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 96 [2022-11-26 00:01:37,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:37,342 INFO L225 Difference]: With dead ends: 4551 [2022-11-26 00:01:37,342 INFO L226 Difference]: Without dead ends: 4536 [2022-11-26 00:01:37,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:01:37,349 INFO L413 NwaCegarLoop]: 555 mSDtfsCounter, 685 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:37,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1832 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-11-26 00:01:37,357 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4536 states. [2022-11-26 00:01:37,790 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4536 to 4463. [2022-11-26 00:01:37,808 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3279 states have (on average 1.5336992985666362) internal successors, (5029), 3423 states have internal predecessors, (5029), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-26 00:01:37,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 7018 transitions. [2022-11-26 00:01:37,848 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 7018 transitions. Word has length 96 [2022-11-26 00:01:37,849 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:37,849 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 7018 transitions. [2022-11-26 00:01:37,850 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.5) internal successors, (57), 6 states have internal predecessors, (57), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-26 00:01:37,851 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 7018 transitions. [2022-11-26 00:01:37,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-26 00:01:37,854 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:37,855 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:37,855 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-26 00:01:37,855 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:37,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:37,856 INFO L85 PathProgramCache]: Analyzing trace with hash 1976842914, now seen corresponding path program 1 times [2022-11-26 00:01:37,856 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:37,857 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [558533177] [2022-11-26 00:01:37,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:37,857 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:37,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:38,281 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:01:38,282 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:38,282 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [558533177] [2022-11-26 00:01:38,282 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [558533177] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:38,282 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:38,283 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-26 00:01:38,283 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1951128841] [2022-11-26 00:01:38,283 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:38,283 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-26 00:01:38,284 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:38,284 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-26 00:01:38,285 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-26 00:01:38,285 INFO L87 Difference]: Start difference. First operand 4463 states and 7018 transitions. Second operand has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-26 00:01:39,073 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:39,073 INFO L93 Difference]: Finished difference Result 4916 states and 7709 transitions. [2022-11-26 00:01:39,074 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-11-26 00:01:39,074 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) Word has length 102 [2022-11-26 00:01:39,074 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:39,114 INFO L225 Difference]: With dead ends: 4916 [2022-11-26 00:01:39,114 INFO L226 Difference]: Without dead ends: 4469 [2022-11-26 00:01:39,120 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:01:39,121 INFO L413 NwaCegarLoop]: 570 mSDtfsCounter, 319 mSDsluCounter, 3682 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 326 SdHoareTripleChecker+Valid, 4252 SdHoareTripleChecker+Invalid, 529 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:39,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [326 Valid, 4252 Invalid, 529 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 490 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-26 00:01:39,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4469 states. [2022-11-26 00:01:39,606 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4469 to 4463. [2022-11-26 00:01:39,614 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4463 states, 3279 states have (on average 1.5019823116803903) internal successors, (4925), 3423 states have internal predecessors, (4925), 868 states have call successors, (868), 241 states have call predecessors, (868), 315 states have return successors, (1121), 888 states have call predecessors, (1121), 863 states have call successors, (1121) [2022-11-26 00:01:39,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4463 states to 4463 states and 6914 transitions. [2022-11-26 00:01:39,644 INFO L78 Accepts]: Start accepts. Automaton has 4463 states and 6914 transitions. Word has length 102 [2022-11-26 00:01:39,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:39,645 INFO L495 AbstractCegarLoop]: Abstraction has 4463 states and 6914 transitions. [2022-11-26 00:01:39,645 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.625) internal successors, (61), 8 states have internal predecessors, (61), 5 states have call successors, (19), 2 states have call predecessors, (19), 5 states have return successors, (18), 6 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-26 00:01:39,645 INFO L276 IsEmpty]: Start isEmpty. Operand 4463 states and 6914 transitions. [2022-11-26 00:01:39,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-26 00:01:39,649 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:39,649 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:39,650 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-26 00:01:39,650 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:39,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:39,651 INFO L85 PathProgramCache]: Analyzing trace with hash 826552684, now seen corresponding path program 1 times [2022-11-26 00:01:39,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:39,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [607492495] [2022-11-26 00:01:39,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:39,652 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:39,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:40,378 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-26 00:01:40,378 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:40,378 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [607492495] [2022-11-26 00:01:40,379 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [607492495] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:01:40,379 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:01:40,379 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-26 00:01:40,379 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2060359837] [2022-11-26 00:01:40,379 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:01:40,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-26 00:01:40,380 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:01:40,381 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-26 00:01:40,381 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-11-26 00:01:40,381 INFO L87 Difference]: Start difference. First operand 4463 states and 6914 transitions. Second operand has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-26 00:01:45,005 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:01:45,006 INFO L93 Difference]: Finished difference Result 16307 states and 25654 transitions. [2022-11-26 00:01:45,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-26 00:01:45,007 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) Word has length 108 [2022-11-26 00:01:45,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:01:45,085 INFO L225 Difference]: With dead ends: 16307 [2022-11-26 00:01:45,085 INFO L226 Difference]: Without dead ends: 11867 [2022-11-26 00:01:45,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2022-11-26 00:01:45,109 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2590 mSDsluCounter, 1129 mSDsCounter, 0 mSdLazyCounter, 3069 mSolverCounterSat, 1031 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2654 SdHoareTripleChecker+Valid, 1650 SdHoareTripleChecker+Invalid, 4100 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1031 IncrementalHoareTripleChecker+Valid, 3069 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-26 00:01:45,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2654 Valid, 1650 Invalid, 4100 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1031 Valid, 3069 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-26 00:01:45,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11867 states. [2022-11-26 00:01:46,317 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11867 to 10582. [2022-11-26 00:01:46,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10582 states, 7735 states have (on average 1.5148028442146089) internal successors, (11717), 8102 states have internal predecessors, (11717), 2158 states have call successors, (2158), 522 states have call predecessors, (2158), 688 states have return successors, (2706), 2092 states have call predecessors, (2706), 2153 states have call successors, (2706) [2022-11-26 00:01:46,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10582 states to 10582 states and 16581 transitions. [2022-11-26 00:01:46,387 INFO L78 Accepts]: Start accepts. Automaton has 10582 states and 16581 transitions. Word has length 108 [2022-11-26 00:01:46,388 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:01:46,388 INFO L495 AbstractCegarLoop]: Abstraction has 10582 states and 16581 transitions. [2022-11-26 00:01:46,388 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.0) internal successors, (64), 7 states have internal predecessors, (64), 6 states have call successors, (20), 4 states have call predecessors, (20), 2 states have return successors, (19), 5 states have call predecessors, (19), 5 states have call successors, (19) [2022-11-26 00:01:46,388 INFO L276 IsEmpty]: Start isEmpty. Operand 10582 states and 16581 transitions. [2022-11-26 00:01:46,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-26 00:01:46,392 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:01:46,393 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:01:46,393 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-26 00:01:46,393 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:01:46,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:01:46,394 INFO L85 PathProgramCache]: Analyzing trace with hash 98529616, now seen corresponding path program 1 times [2022-11-26 00:01:46,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:01:46,394 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1125835310] [2022-11-26 00:01:46,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:46,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:01:46,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:48,870 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-26 00:01:48,870 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:01:48,870 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1125835310] [2022-11-26 00:01:48,871 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1125835310] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:01:48,871 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1592608688] [2022-11-26 00:01:48,871 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:01:48,871 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:01:48,871 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:01:48,876 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:01:48,881 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-26 00:01:49,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:01:49,307 INFO L263 TraceCheckSpWp]: Trace formula consists of 1878 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:01:49,319 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:01:52,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:01:52,045 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:01:55,389 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:01:55,390 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1592608688] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:01:55,390 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1669570888] [2022-11-26 00:01:55,421 INFO L159 IcfgInterpreter]: Started Sifa with 101 locations of interest [2022-11-26 00:01:55,422 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:01:55,426 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:01:55,432 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:01:55,432 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:02:03,495 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-26 00:03:09,992 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-26 00:03:17,788 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 102 for LOIs [2022-11-26 00:03:18,351 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 116 for LOIs [2022-11-26 00:03:18,912 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-11-26 00:03:18,920 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 75 for LOIs [2022-11-26 00:03:18,938 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 93 for LOIs [2022-11-26 00:03:18,948 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-26 00:03:22,817 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 453 for LOIs [2022-11-26 00:03:23,089 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 101 for LOIs [2022-11-26 00:03:23,462 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 75 for LOIs [2022-11-26 00:03:23,469 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-26 00:03:26,256 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-11-26 00:03:37,716 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-11-26 00:03:38,286 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-26 00:03:43,639 WARN L233 SmtUtils]: Spent 5.05s 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) [2022-11-26 00:03:55,795 WARN L233 SmtUtils]: Spent 7.58s on a formula simplification. DAG size of input: 656 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:04,918 WARN L233 SmtUtils]: Spent 8.48s on a formula simplification. DAG size of input: 696 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:14,250 WARN L233 SmtUtils]: Spent 8.82s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:23,243 WARN L233 SmtUtils]: Spent 8.46s on a formula simplification. DAG size of input: 673 DAG size of output: 611 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:04:46,255 WARN L233 SmtUtils]: Spent 22.25s on a formula simplification. DAG size of input: 829 DAG size of output: 681 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:05:07,616 WARN L233 SmtUtils]: Spent 20.27s on a formula simplification. DAG size of input: 902 DAG size of output: 807 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:30,118 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 525 DAG size of output: 465 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:36,287 WARN L233 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 527 DAG size of output: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:06:42,397 WARN L233 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 530 DAG size of output: 471 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:00,596 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 539 DAG size of output: 472 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:07,729 WARN L233 SmtUtils]: Spent 6.14s on a formula simplification. DAG size of input: 539 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:14,914 WARN L233 SmtUtils]: Spent 6.09s on a formula simplification. DAG size of input: 542 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:22,763 WARN L233 SmtUtils]: Spent 6.76s on a formula simplification. DAG size of input: 545 DAG size of output: 495 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:30,683 WARN L233 SmtUtils]: Spent 6.79s on a formula simplification. DAG size of input: 551 DAG size of output: 501 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:38,495 WARN L233 SmtUtils]: Spent 6.72s 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) [2022-11-26 00:07:38,500 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1669570888] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:07:38,500 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-26 00:07:38,500 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [72] imperfect sequences [20, 12, 12] total 108 [2022-11-26 00:07:38,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [873032814] [2022-11-26 00:07:38,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:07:38,501 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 73 states [2022-11-26 00:07:38,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:07:38,503 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 73 interpolants. [2022-11-26 00:07:38,506 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=763, Invalid=10793, Unknown=0, NotChecked=0, Total=11556 [2022-11-26 00:07:38,506 INFO L87 Difference]: Start difference. First operand 10582 states and 16581 transitions. Second operand has 73 states, 59 states have (on average 1.11864406779661) internal successors, (66), 47 states have internal predecessors, (66), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-26 00:07:46,046 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 727 DAG size of output: 649 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:07:53,335 WARN L233 SmtUtils]: Spent 6.75s on a formula simplification. DAG size of input: 739 DAG size of output: 656 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:00,469 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 744 DAG size of output: 660 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:23,996 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 595 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:29,660 WARN L233 SmtUtils]: Spent 5.24s on a formula simplification. DAG size of input: 607 DAG size of output: 599 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:36,373 WARN L233 SmtUtils]: Spent 6.21s on a formula simplification. DAG size of input: 644 DAG size of output: 614 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:43,106 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 640 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:49,455 WARN L233 SmtUtils]: Spent 5.83s on a formula simplification. DAG size of input: 623 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:08:55,768 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 629 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:03,326 WARN L233 SmtUtils]: Spent 6.89s on a formula simplification. DAG size of input: 681 DAG size of output: 616 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:10,879 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 684 DAG size of output: 619 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:18,762 WARN L233 SmtUtils]: Spent 7.17s on a formula simplification. DAG size of input: 688 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:09:26,678 WARN L233 SmtUtils]: Spent 7.25s on a formula simplification. DAG size of input: 690 DAG size of output: 625 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:11:00,936 WARN L233 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 549 DAG size of output: 537 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:11:06,971 WARN L233 SmtUtils]: Spent 5.54s on a formula simplification. DAG size of input: 555 DAG size of output: 543 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:11:13,191 WARN L233 SmtUtils]: Spent 5.69s on a formula simplification. DAG size of input: 565 DAG size of output: 553 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-26 00:12:10,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:10,597 INFO L93 Difference]: Finished difference Result 22334 states and 34980 transitions. [2022-11-26 00:12:10,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 83 states. [2022-11-26 00:12:10,598 INFO L78 Accepts]: Start accepts. Automaton has has 73 states, 59 states have (on average 1.11864406779661) internal successors, (66), 47 states have internal predecessors, (66), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) Word has length 110 [2022-11-26 00:12:10,598 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:10,664 INFO L225 Difference]: With dead ends: 22334 [2022-11-26 00:12:10,664 INFO L226 Difference]: Without dead ends: 11775 [2022-11-26 00:12:10,731 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 390 GetRequests, 243 SyntacticMatches, 6 SemanticMatches, 141 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7039 ImplicationChecksByTransitivity, 411.5s TimeCoverageRelationStatistics Valid=1299, Invalid=19007, Unknown=0, NotChecked=0, Total=20306 [2022-11-26 00:12:10,734 INFO L413 NwaCegarLoop]: 604 mSDtfsCounter, 979 mSDsluCounter, 10514 mSDsCounter, 0 mSdLazyCounter, 24462 mSolverCounterSat, 253 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 994 SdHoareTripleChecker+Valid, 11118 SdHoareTripleChecker+Invalid, 24715 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 253 IncrementalHoareTripleChecker+Valid, 24462 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 99.8s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:10,734 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [994 Valid, 11118 Invalid, 24715 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [253 Valid, 24462 Invalid, 0 Unknown, 0 Unchecked, 99.8s Time] [2022-11-26 00:12:10,746 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11775 states. [2022-11-26 00:12:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11775 to 11601. [2022-11-26 00:12:12,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11601 states, 8564 states have (on average 1.50443717888837) internal successors, (12884), 8934 states have internal predecessors, (12884), 2282 states have call successors, (2282), 572 states have call predecessors, (2282), 754 states have return successors, (2862), 2229 states have call predecessors, (2862), 2277 states have call successors, (2862) [2022-11-26 00:12:12,455 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11601 states to 11601 states and 18028 transitions. [2022-11-26 00:12:12,458 INFO L78 Accepts]: Start accepts. Automaton has 11601 states and 18028 transitions. Word has length 110 [2022-11-26 00:12:12,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:12,458 INFO L495 AbstractCegarLoop]: Abstraction has 11601 states and 18028 transitions. [2022-11-26 00:12:12,459 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 73 states, 59 states have (on average 1.11864406779661) internal successors, (66), 47 states have internal predecessors, (66), 20 states have call successors, (20), 14 states have call predecessors, (20), 14 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2022-11-26 00:12:12,459 INFO L276 IsEmpty]: Start isEmpty. Operand 11601 states and 18028 transitions. [2022-11-26 00:12:12,462 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-26 00:12:12,462 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:12,463 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:12,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-26 00:12:12,672 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-26 00:12:12,672 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:12:12,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:12,673 INFO L85 PathProgramCache]: Analyzing trace with hash 256910990, now seen corresponding path program 1 times [2022-11-26 00:12:12,673 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:12,673 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1270932793] [2022-11-26 00:12:12,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:12,673 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:13,392 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-26 00:12:13,393 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:13,393 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1270932793] [2022-11-26 00:12:13,393 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1270932793] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-26 00:12:13,393 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-26 00:12:13,393 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-26 00:12:13,393 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849225239] [2022-11-26 00:12:13,394 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-26 00:12:13,395 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-26 00:12:13,395 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-26 00:12:13,396 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-26 00:12:13,396 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-11-26 00:12:13,396 INFO L87 Difference]: Start difference. First operand 11601 states and 18028 transitions. Second operand has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-26 00:12:17,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-26 00:12:17,980 INFO L93 Difference]: Finished difference Result 22103 states and 34712 transitions. [2022-11-26 00:12:17,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-11-26 00:12:17,990 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) Word has length 111 [2022-11-26 00:12:17,991 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-26 00:12:18,074 INFO L225 Difference]: With dead ends: 22103 [2022-11-26 00:12:18,074 INFO L226 Difference]: Without dead ends: 13511 [2022-11-26 00:12:18,107 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=71, Invalid=201, Unknown=0, NotChecked=0, Total=272 [2022-11-26 00:12:18,107 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1355 mSDsluCounter, 1258 mSDsCounter, 0 mSdLazyCounter, 3883 mSolverCounterSat, 542 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1431 SdHoareTripleChecker+Valid, 1633 SdHoareTripleChecker+Invalid, 4425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 542 IncrementalHoareTripleChecker+Valid, 3883 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-26 00:12:18,108 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1431 Valid, 1633 Invalid, 4425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [542 Valid, 3883 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-26 00:12:18,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13511 states. [2022-11-26 00:12:19,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13511 to 12747. [2022-11-26 00:12:19,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12747 states, 9436 states have (on average 1.502967359050445) internal successors, (14182), 9827 states have internal predecessors, (14182), 2442 states have call successors, (2442), 648 states have call predecessors, (2442), 868 states have return successors, (3220), 2406 states have call predecessors, (3220), 2437 states have call successors, (3220) [2022-11-26 00:12:19,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12747 states to 12747 states and 19844 transitions. [2022-11-26 00:12:19,745 INFO L78 Accepts]: Start accepts. Automaton has 12747 states and 19844 transitions. Word has length 111 [2022-11-26 00:12:19,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-26 00:12:19,746 INFO L495 AbstractCegarLoop]: Abstraction has 12747 states and 19844 transitions. [2022-11-26 00:12:19,746 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 7.444444444444445) internal successors, (67), 9 states have internal predecessors, (67), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (19), 8 states have call predecessors, (19), 6 states have call successors, (19) [2022-11-26 00:12:19,747 INFO L276 IsEmpty]: Start isEmpty. Operand 12747 states and 19844 transitions. [2022-11-26 00:12:19,750 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-26 00:12:19,750 INFO L187 NwaCegarLoop]: Found error trace [2022-11-26 00:12:19,751 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-26 00:12:19,751 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-26 00:12:19,751 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-26 00:12:19,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-26 00:12:19,752 INFO L85 PathProgramCache]: Analyzing trace with hash -1911394316, now seen corresponding path program 1 times [2022-11-26 00:12:19,752 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-26 00:12:19,752 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260966481] [2022-11-26 00:12:19,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:19,753 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-26 00:12:19,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:22,752 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2022-11-26 00:12:22,752 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-26 00:12:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260966481] [2022-11-26 00:12:22,752 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260966481] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-26 00:12:22,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1072876545] [2022-11-26 00:12:22,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-26 00:12:22,753 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-26 00:12:22,753 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 [2022-11-26 00:12:22,754 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-26 00:12:22,777 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7dd2b434-7c44-4581-8d58-588fae6f0daf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-26 00:12:23,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-26 00:12:23,159 INFO L263 TraceCheckSpWp]: Trace formula consists of 1881 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-26 00:12:23,167 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-26 00:12:25,203 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-26 00:12:25,203 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-26 00:12:28,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-26 00:12:28,009 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1072876545] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-26 00:12:28,009 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [989484732] [2022-11-26 00:12:28,012 INFO L159 IcfgInterpreter]: Started Sifa with 102 locations of interest [2022-11-26 00:12:28,013 INFO L166 IcfgInterpreter]: Building call graph [2022-11-26 00:12:28,013 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-26 00:12:28,014 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-26 00:12:28,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-26 00:12:33,270 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-26 00:13:34,422 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-26 00:13:41,793 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 102 for LOIs [2022-11-26 00:13:42,327 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 116 for LOIs [2022-11-26 00:13:42,865 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 44 for LOIs [2022-11-26 00:13:42,877 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 75 for LOIs [2022-11-26 00:13:42,895 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 93 for LOIs [2022-11-26 00:13:42,914 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-26 00:13:46,593 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 448 for LOIs [2022-11-26 00:13:46,846 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 101 for LOIs [2022-11-26 00:13:47,157 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 75 for LOIs [2022-11-26 00:13:47,163 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-26 00:13:49,788 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs