./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/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_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/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_86607574-f25a-481f-868a-86dc47a35ccd/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 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 23:30:40,113 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:30:40,116 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:30:40,159 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:30:40,160 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:30:40,163 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:30:40,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:30:40,188 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:30:40,191 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:30:40,196 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:30:40,197 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:30:40,199 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:30:40,200 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:30:40,202 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:30:40,204 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:30:40,206 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:30:40,208 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:30:40,209 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:30:40,210 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:30:40,216 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:30:40,218 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:30:40,220 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:30:40,222 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:30:40,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:30:40,240 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:30:40,242 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:30:40,242 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:30:40,244 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:30:40,245 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:30:40,245 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:30:40,246 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:30:40,246 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:30:40,248 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:30:40,249 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:30:40,251 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:30:40,252 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:30:40,253 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:30:40,253 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:30:40,253 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:30:40,255 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:30:40,255 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:30:40,256 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:30:40,293 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:30:40,293 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:30:40,294 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:30:40,294 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:30:40,295 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:30:40,295 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:30:40,295 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:30:40,296 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:30:40,296 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:30:40,296 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:30:40,297 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:30:40,297 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:30:40,297 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:30:40,298 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:30:40,298 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:30:40,298 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:30:40,298 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:30:40,298 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:30:40,299 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:30:40,299 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:30:40,300 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:30:40,300 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:30:40,300 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:30:40,300 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:30:40,300 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:30:40,301 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:30:40,301 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:30:40,302 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:30:40,302 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:30:40,302 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:30:40,302 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:30:40,303 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:30:40,303 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:40,303 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:30:40,303 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:30:40,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:30:40,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:30:40,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:30:40,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:30:40,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:30:40,305 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:30:40,305 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_86607574-f25a-481f-868a-86dc47a35ccd/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 680b86ee69d2fa1a591b34672ee94362515e8041606baf59201de5a19c705dd0 [2022-11-25 23:30:40,621 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:30:40,650 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:30:40,653 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:30:40,654 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:30:40,655 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:30:40,656 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-11-25 23:30:43,670 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:30:43,990 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:30:43,991 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c [2022-11-25 23:30:44,027 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/data/2971fb2e5/f7315d60874e4afd9256c6e5171161ca/FLAG49f498297 [2022-11-25 23:30:44,048 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/data/2971fb2e5/f7315d60874e4afd9256c6e5171161ca [2022-11-25 23:30:44,051 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:30:44,053 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:30:44,057 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:44,057 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:30:44,060 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:30:44,061 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:44,063 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d542ff and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44, skipping insertion in model container [2022-11-25 23:30:44,063 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:44,072 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:30:44,170 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:30:44,443 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_86607574-f25a-481f-868a-86dc47a35ccd/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-11-25 23:30:44,703 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:44,715 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:30:44,753 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_86607574-f25a-481f-868a-86dc47a35ccd/sv-benchmarks/c/product-lines/elevator_spec1_product25.cil.c[13407,13420] [2022-11-25 23:30:44,850 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:30:44,891 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:30:44,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44 WrapperNode [2022-11-25 23:30:44,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:30:44,893 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:44,893 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:30:44,894 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:30:44,902 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:44,944 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:44,992 INFO L138 Inliner]: procedures = 91, calls = 335, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 835 [2022-11-25 23:30:44,993 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:30:44,993 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:30:44,994 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:30:44,994 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:30:45,011 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,012 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,017 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,017 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,046 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,069 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,088 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,095 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,117 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:30:45,117 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:30:45,118 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:30:45,118 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:30:45,119 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (1/1) ... [2022-11-25 23:30:45,147 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:30:45,157 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:30:45,172 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:30:45,198 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:30:45,219 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 23:30:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 23:30:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:30:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 23:30:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 23:30:45,220 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 23:30:45,220 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 23:30:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 23:30:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 23:30:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 23:30:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 23:30:45,221 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 23:30:45,221 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 23:30:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 23:30:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 23:30:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 23:30:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 23:30:45,222 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 23:30:45,222 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 23:30:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 23:30:45,223 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 23:30:45,223 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 23:30:45,224 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 23:30:45,224 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 23:30:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 23:30:45,225 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 23:30:45,225 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 23:30:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 23:30:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 23:30:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 23:30:45,226 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 23:30:45,226 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 23:30:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 23:30:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 23:30:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 23:30:45,227 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 23:30:45,227 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 23:30:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:30:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 23:30:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 23:30:45,228 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 23:30:45,228 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 23:30:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 23:30:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 23:30:45,229 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:30:45,229 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:30:45,230 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 23:30:45,230 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 23:30:45,404 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:30:45,406 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:30:46,786 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:30:47,617 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:30:47,617 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:30:47,622 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:47 BoogieIcfgContainer [2022-11-25 23:30:47,622 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:30:47,626 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:30:47,626 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:30:47,629 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:30:47,629 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:30:44" (1/3) ... [2022-11-25 23:30:47,631 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d3b9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:47, skipping insertion in model container [2022-11-25 23:30:47,631 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:30:44" (2/3) ... [2022-11-25 23:30:47,633 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@39d3b9cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:30:47, skipping insertion in model container [2022-11-25 23:30:47,633 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:30:47" (3/3) ... [2022-11-25 23:30:47,637 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product25.cil.c [2022-11-25 23:30:47,656 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:30:47,656 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:30:47,735 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:30:47,741 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;@32d03048, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:30:47,742 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:30:47,749 INFO L276 IsEmpty]: Start isEmpty. Operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) [2022-11-25 23:30:47,776 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-11-25 23:30:47,779 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:47,780 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:47,780 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:47,787 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:47,788 INFO L85 PathProgramCache]: Analyzing trace with hash 333541262, now seen corresponding path program 1 times [2022-11-25 23:30:47,798 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:47,798 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2007709063] [2022-11-25 23:30:47,799 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:47,800 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:48,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:48,731 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:30:48,732 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:48,732 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2007709063] [2022-11-25 23:30:48,733 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2007709063] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:48,733 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:48,733 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:30:48,735 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1590392681] [2022-11-25 23:30:48,735 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:48,741 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:30:48,742 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:48,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:30:48,787 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:30:48,792 INFO L87 Difference]: Start difference. First operand has 354 states, 239 states have (on average 1.6150627615062763) internal successors, (386), 260 states have internal predecessors, (386), 91 states have call successors, (91), 22 states have call predecessors, (91), 22 states have return successors, (91), 85 states have call predecessors, (91), 91 states have call successors, (91) Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-25 23:30:51,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:51,672 INFO L93 Difference]: Finished difference Result 1177 states and 1929 transitions. [2022-11-25 23:30:51,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-25 23:30:51,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) Word has length 62 [2022-11-25 23:30:51,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:51,696 INFO L225 Difference]: With dead ends: 1177 [2022-11-25 23:30:51,696 INFO L226 Difference]: Without dead ends: 840 [2022-11-25 23:30:51,703 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-25 23:30:51,706 INFO L413 NwaCegarLoop]: 379 mSDtfsCounter, 1636 mSDsluCounter, 1297 mSDsCounter, 0 mSdLazyCounter, 2527 mSolverCounterSat, 512 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1699 SdHoareTripleChecker+Valid, 1676 SdHoareTripleChecker+Invalid, 3039 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 512 IncrementalHoareTripleChecker+Valid, 2527 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:51,709 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1699 Valid, 1676 Invalid, 3039 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [512 Valid, 2527 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-25 23:30:51,728 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 840 states. [2022-11-25 23:30:51,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 840 to 791. [2022-11-25 23:30:51,857 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 791 states, 558 states have (on average 1.636200716845878) internal successors, (913), 593 states have internal predecessors, (913), 188 states have call successors, (188), 42 states have call predecessors, (188), 44 states have return successors, (189), 180 states have call predecessors, (189), 183 states have call successors, (189) [2022-11-25 23:30:51,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 791 states to 791 states and 1290 transitions. [2022-11-25 23:30:51,866 INFO L78 Accepts]: Start accepts. Automaton has 791 states and 1290 transitions. Word has length 62 [2022-11-25 23:30:51,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:51,867 INFO L495 AbstractCegarLoop]: Abstraction has 791 states and 1290 transitions. [2022-11-25 23:30:51,867 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 5 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (11), 5 states have call predecessors, (11), 4 states have call successors, (11) [2022-11-25 23:30:51,867 INFO L276 IsEmpty]: Start isEmpty. Operand 791 states and 1290 transitions. [2022-11-25 23:30:51,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2022-11-25 23:30:51,871 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:51,872 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:51,872 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:30:51,872 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:51,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:51,873 INFO L85 PathProgramCache]: Analyzing trace with hash -1207755559, now seen corresponding path program 1 times [2022-11-25 23:30:51,873 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:51,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [169888505] [2022-11-25 23:30:51,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:51,874 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:52,232 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:30:52,233 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:52,233 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [169888505] [2022-11-25 23:30:52,233 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [169888505] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:52,234 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:52,234 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:30:52,234 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [881393628] [2022-11-25 23:30:52,234 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:52,236 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:30:52,237 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:52,237 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:30:52,238 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:30:52,238 INFO L87 Difference]: Start difference. First operand 791 states and 1290 transitions. Second operand has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:30:52,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:52,459 INFO L93 Difference]: Finished difference Result 1327 states and 2172 transitions. [2022-11-25 23:30:52,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:30:52,460 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) Word has length 67 [2022-11-25 23:30:52,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:52,471 INFO L225 Difference]: With dead ends: 1327 [2022-11-25 23:30:52,471 INFO L226 Difference]: Without dead ends: 861 [2022-11-25 23:30:52,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:30:52,480 INFO L413 NwaCegarLoop]: 566 mSDtfsCounter, 41 mSDsluCounter, 1627 mSDsCounter, 0 mSdLazyCounter, 170 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 2193 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 170 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:52,481 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 2193 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 170 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:30:52,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 861 states. [2022-11-25 23:30:52,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 861 to 803. [2022-11-25 23:30:52,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 803 states, 567 states have (on average 1.6261022927689595) internal successors, (922), 602 states have internal predecessors, (922), 188 states have call successors, (188), 42 states have call predecessors, (188), 47 states have return successors, (195), 183 states have call predecessors, (195), 183 states have call successors, (195) [2022-11-25 23:30:52,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 803 states to 803 states and 1305 transitions. [2022-11-25 23:30:52,589 INFO L78 Accepts]: Start accepts. Automaton has 803 states and 1305 transitions. Word has length 67 [2022-11-25 23:30:52,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:52,590 INFO L495 AbstractCegarLoop]: Abstraction has 803 states and 1305 transitions. [2022-11-25 23:30:52,590 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 8.0) internal successors, (40), 4 states have internal predecessors, (40), 2 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 2 states have call successors, (12) [2022-11-25 23:30:52,590 INFO L276 IsEmpty]: Start isEmpty. Operand 803 states and 1305 transitions. [2022-11-25 23:30:52,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2022-11-25 23:30:52,595 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:52,595 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:52,596 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:30:52,596 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:52,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:52,605 INFO L85 PathProgramCache]: Analyzing trace with hash 1715732801, now seen corresponding path program 1 times [2022-11-25 23:30:52,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:52,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129613680] [2022-11-25 23:30:52,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:52,606 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:52,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:53,157 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:30:53,157 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:53,157 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129613680] [2022-11-25 23:30:53,158 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129613680] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:53,158 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:53,159 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:30:53,159 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [122089660] [2022-11-25 23:30:53,159 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:53,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:30:53,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:53,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:30:53,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:30:53,162 INFO L87 Difference]: Start difference. First operand 803 states and 1305 transitions. Second operand has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:30:55,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:55,803 INFO L93 Difference]: Finished difference Result 1822 states and 2958 transitions. [2022-11-25 23:30:55,803 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:30:55,804 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) Word has length 71 [2022-11-25 23:30:55,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:55,813 INFO L225 Difference]: With dead ends: 1822 [2022-11-25 23:30:55,813 INFO L226 Difference]: Without dead ends: 1248 [2022-11-25 23:30:55,817 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:30:55,818 INFO L413 NwaCegarLoop]: 492 mSDtfsCounter, 2213 mSDsluCounter, 844 mSDsCounter, 0 mSdLazyCounter, 2193 mSolverCounterSat, 924 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2360 SdHoareTripleChecker+Valid, 1336 SdHoareTripleChecker+Invalid, 3117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 924 IncrementalHoareTripleChecker+Valid, 2193 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:55,818 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2360 Valid, 1336 Invalid, 3117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [924 Valid, 2193 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-25 23:30:55,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1248 states. [2022-11-25 23:30:55,904 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1248 to 1154. [2022-11-25 23:30:55,906 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5815691158156913) internal successors, (1270), 855 states have internal predecessors, (1270), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-11-25 23:30:55,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1838 transitions. [2022-11-25 23:30:55,916 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1838 transitions. Word has length 71 [2022-11-25 23:30:55,917 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:55,917 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1838 transitions. [2022-11-25 23:30:55,917 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.5) internal successors, (44), 8 states have internal predecessors, (44), 6 states have call successors, (13), 4 states have call predecessors, (13), 3 states have return successors, (12), 6 states have call predecessors, (12), 5 states have call successors, (12) [2022-11-25 23:30:55,917 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1838 transitions. [2022-11-25 23:30:55,919 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 75 [2022-11-25 23:30:55,919 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:55,920 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:55,920 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:30:55,920 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:55,921 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:55,921 INFO L85 PathProgramCache]: Analyzing trace with hash -565518975, now seen corresponding path program 1 times [2022-11-25 23:30:55,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:55,921 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1821790036] [2022-11-25 23:30:55,921 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:55,922 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:56,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:56,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:30:56,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:56,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1821790036] [2022-11-25 23:30:56,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1821790036] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:56,286 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:56,286 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:30:56,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [213255834] [2022-11-25 23:30:56,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:56,288 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:30:56,288 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:56,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:30:56,289 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:30:56,290 INFO L87 Difference]: Start difference. First operand 1154 states and 1838 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:30:56,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:56,587 INFO L93 Difference]: Finished difference Result 2223 states and 3599 transitions. [2022-11-25 23:30:56,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:30:56,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) Word has length 74 [2022-11-25 23:30:56,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:56,597 INFO L225 Difference]: With dead ends: 2223 [2022-11-25 23:30:56,597 INFO L226 Difference]: Without dead ends: 1154 [2022-11-25 23:30:56,602 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:30:56,610 INFO L413 NwaCegarLoop]: 549 mSDtfsCounter, 221 mSDsluCounter, 1406 mSDsCounter, 0 mSdLazyCounter, 214 mSolverCounterSat, 18 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 234 SdHoareTripleChecker+Valid, 1955 SdHoareTripleChecker+Invalid, 232 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 18 IncrementalHoareTripleChecker+Valid, 214 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:56,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [234 Valid, 1955 Invalid, 232 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [18 Valid, 214 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:30:56,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1154 states. [2022-11-25 23:30:56,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1154 to 1154. [2022-11-25 23:30:56,757 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1154 states, 803 states have (on average 1.5417185554171855) internal successors, (1238), 855 states have internal predecessors, (1238), 276 states have call successors, (276), 66 states have call predecessors, (276), 74 states have return successors, (292), 269 states have call predecessors, (292), 271 states have call successors, (292) [2022-11-25 23:30:56,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1154 states to 1154 states and 1806 transitions. [2022-11-25 23:30:56,768 INFO L78 Accepts]: Start accepts. Automaton has 1154 states and 1806 transitions. Word has length 74 [2022-11-25 23:30:56,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:56,770 INFO L495 AbstractCegarLoop]: Abstraction has 1154 states and 1806 transitions. [2022-11-25 23:30:56,770 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 states have internal predecessors, (47), 3 states have call successors, (13), 2 states have call predecessors, (13), 3 states have return successors, (12), 3 states have call predecessors, (12), 3 states have call successors, (12) [2022-11-25 23:30:56,771 INFO L276 IsEmpty]: Start isEmpty. Operand 1154 states and 1806 transitions. [2022-11-25 23:30:56,778 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2022-11-25 23:30:56,778 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:56,778 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:56,779 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:30:56,779 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:56,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:56,780 INFO L85 PathProgramCache]: Analyzing trace with hash -2000439112, now seen corresponding path program 1 times [2022-11-25 23:30:56,780 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:56,780 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [223270402] [2022-11-25 23:30:56,780 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:56,781 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:56,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:57,161 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:30:57,161 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:57,162 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [223270402] [2022-11-25 23:30:57,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [223270402] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:57,162 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:57,162 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:30:57,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612637680] [2022-11-25 23:30:57,163 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:57,163 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:30:57,163 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:57,164 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:30:57,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:30:57,164 INFO L87 Difference]: Start difference. First operand 1154 states and 1806 transitions. Second operand has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:30:59,271 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:30:59,271 INFO L93 Difference]: Finished difference Result 2210 states and 3477 transitions. [2022-11-25 23:30:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:30:59,272 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) Word has length 76 [2022-11-25 23:30:59,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:30:59,281 INFO L225 Difference]: With dead ends: 2210 [2022-11-25 23:30:59,281 INFO L226 Difference]: Without dead ends: 1342 [2022-11-25 23:30:59,285 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:30:59,286 INFO L413 NwaCegarLoop]: 353 mSDtfsCounter, 923 mSDsluCounter, 1161 mSDsCounter, 0 mSdLazyCounter, 2308 mSolverCounterSat, 375 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 993 SdHoareTripleChecker+Valid, 1514 SdHoareTripleChecker+Invalid, 2683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 375 IncrementalHoareTripleChecker+Valid, 2308 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:30:59,286 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [993 Valid, 1514 Invalid, 2683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [375 Valid, 2308 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-25 23:30:59,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1342 states. [2022-11-25 23:30:59,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1342 to 1181. [2022-11-25 23:30:59,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1181 states, 821 states have (on average 1.5347137637028014) internal successors, (1260), 877 states have internal predecessors, (1260), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-25 23:30:59,373 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1181 states to 1181 states and 1840 transitions. [2022-11-25 23:30:59,374 INFO L78 Accepts]: Start accepts. Automaton has 1181 states and 1840 transitions. Word has length 76 [2022-11-25 23:30:59,374 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:30:59,374 INFO L495 AbstractCegarLoop]: Abstraction has 1181 states and 1840 transitions. [2022-11-25 23:30:59,374 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.571428571428571) internal successors, (46), 7 states have internal predecessors, (46), 4 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 3 states have call successors, (13) [2022-11-25 23:30:59,375 INFO L276 IsEmpty]: Start isEmpty. Operand 1181 states and 1840 transitions. [2022-11-25 23:30:59,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2022-11-25 23:30:59,376 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:30:59,377 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:30:59,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:30:59,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:30:59,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:30:59,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1160546238, now seen corresponding path program 1 times [2022-11-25 23:30:59,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:30:59,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1057071933] [2022-11-25 23:30:59,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:30:59,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:30:59,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:30:59,730 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:30:59,730 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:30:59,731 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1057071933] [2022-11-25 23:30:59,731 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1057071933] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:30:59,731 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:30:59,731 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:30:59,731 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [553174265] [2022-11-25 23:30:59,731 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:30:59,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:30:59,732 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:30:59,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:30:59,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:30:59,733 INFO L87 Difference]: Start difference. First operand 1181 states and 1840 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:31:00,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:00,407 INFO L93 Difference]: Finished difference Result 1253 states and 1953 transitions. [2022-11-25 23:31:00,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:31:00,408 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) Word has length 83 [2022-11-25 23:31:00,409 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:00,418 INFO L225 Difference]: With dead ends: 1253 [2022-11-25 23:31:00,418 INFO L226 Difference]: Without dead ends: 1238 [2022-11-25 23:31:00,420 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:31:00,421 INFO L413 NwaCegarLoop]: 512 mSDtfsCounter, 640 mSDsluCounter, 1176 mSDsCounter, 0 mSdLazyCounter, 513 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 641 SdHoareTripleChecker+Valid, 1688 SdHoareTripleChecker+Invalid, 535 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 513 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:00,421 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [641 Valid, 1688 Invalid, 535 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 513 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-25 23:31:00,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1238 states. [2022-11-25 23:31:00,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1238 to 1185. [2022-11-25 23:31:00,515 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5321212121212122) internal successors, (1264), 881 states have internal predecessors, (1264), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-25 23:31:00,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1844 transitions. [2022-11-25 23:31:00,523 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1844 transitions. Word has length 83 [2022-11-25 23:31:00,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:00,524 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1844 transitions. [2022-11-25 23:31:00,524 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 3 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 3 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:31:00,524 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1844 transitions. [2022-11-25 23:31:00,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 23:31:00,532 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:00,532 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] [2022-11-25 23:31:00,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:31:00,532 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:00,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:00,533 INFO L85 PathProgramCache]: Analyzing trace with hash -2023443526, now seen corresponding path program 1 times [2022-11-25 23:31:00,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:31:00,533 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1075612614] [2022-11-25 23:31:00,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:00,534 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:31:00,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:00,857 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:31:00,858 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:31:00,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1075612614] [2022-11-25 23:31:00,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1075612614] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:31:00,858 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:31:00,858 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:31:00,858 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699915118] [2022-11-25 23:31:00,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:31:00,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:31:00,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:31:00,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:31:00,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:31:00,861 INFO L87 Difference]: Start difference. First operand 1185 states and 1844 transitions. Second operand has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 23:31:01,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:31:01,093 INFO L93 Difference]: Finished difference Result 1204 states and 1868 transitions. [2022-11-25 23:31:01,093 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:31:01,093 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-11-25 23:31:01,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:31:01,103 INFO L225 Difference]: With dead ends: 1204 [2022-11-25 23:31:01,103 INFO L226 Difference]: Without dead ends: 1189 [2022-11-25 23:31:01,104 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:31:01,105 INFO L413 NwaCegarLoop]: 515 mSDtfsCounter, 41 mSDsluCounter, 2009 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 2524 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:31:01,105 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 2524 Invalid, 174 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:31:01,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2022-11-25 23:31:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1185. [2022-11-25 23:31:01,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1185 states, 825 states have (on average 1.5284848484848486) internal successors, (1261), 881 states have internal predecessors, (1261), 277 states have call successors, (277), 71 states have call predecessors, (277), 82 states have return successors, (303), 269 states have call predecessors, (303), 272 states have call successors, (303) [2022-11-25 23:31:01,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1185 states to 1185 states and 1841 transitions. [2022-11-25 23:31:01,222 INFO L78 Accepts]: Start accepts. Automaton has 1185 states and 1841 transitions. Word has length 88 [2022-11-25 23:31:01,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:31:01,223 INFO L495 AbstractCegarLoop]: Abstraction has 1185 states and 1841 transitions. [2022-11-25 23:31:01,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 10.0) internal successors, (50), 5 states have internal predecessors, (50), 2 states have call successors, (17), 2 states have call predecessors, (17), 3 states have return successors, (16), 3 states have call predecessors, (16), 1 states have call successors, (16) [2022-11-25 23:31:01,224 INFO L276 IsEmpty]: Start isEmpty. Operand 1185 states and 1841 transitions. [2022-11-25 23:31:01,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 93 [2022-11-25 23:31:01,226 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:31:01,227 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:31:01,227 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:31:01,227 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:31:01,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:31:01,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1808249217, now seen corresponding path program 1 times [2022-11-25 23:31:01,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:31:01,228 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [556880970] [2022-11-25 23:31:01,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:01,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:31:01,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:02,303 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:31:02,303 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:31:02,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [556880970] [2022-11-25 23:31:02,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [556880970] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:31:02,303 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1158581072] [2022-11-25 23:31:02,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:31:02,303 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:31:02,304 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:31:02,309 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:31:02,318 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:31:02,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:31:02,751 INFO L263 TraceCheckSpWp]: Trace formula consists of 1809 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 23:31:02,762 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:31:05,178 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:31:05,179 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:31:08,393 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:31:08,394 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1158581072] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:31:08,394 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [245238153] [2022-11-25 23:31:08,415 INFO L159 IcfgInterpreter]: Started Sifa with 83 locations of interest [2022-11-25 23:31:08,416 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:31:08,419 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:31:08,425 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:31:08,425 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:31:15,778 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-25 23:31:20,719 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-25 23:31:23,701 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-11-25 23:31:24,153 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 31 for LOIs [2022-11-25 23:31:24,166 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-25 23:31:28,640 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 424 for LOIs [2022-11-25 23:31:28,715 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-11-25 23:31:28,845 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-25 23:31:28,870 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-25 23:31:32,025 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-11-25 23:34:48,745 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-11-25 23:34:49,328 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:35:08,252 WARN L233 SmtUtils]: Spent 10.61s on a formula simplification. DAG size of input: 656 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:19,506 WARN L233 SmtUtils]: Spent 10.82s on a formula simplification. DAG size of input: 696 DAG size of output: 533 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:27,619 WARN L233 SmtUtils]: Spent 7.75s 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) [2022-11-25 23:35:35,800 WARN L233 SmtUtils]: Spent 7.82s 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) [2022-11-25 23:35:56,360 WARN L233 SmtUtils]: Spent 20.01s 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) [2022-11-25 23:36:29,138 WARN L233 SmtUtils]: Spent 28.35s on a formula simplification. DAG size of input: 1157 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:57,100 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [245238153] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:37:57,100 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 23:37:57,100 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [57] imperfect sequences [11, 12, 12] total 84 [2022-11-25 23:37:57,101 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076581497] [2022-11-25 23:37:57,101 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:37:57,102 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 58 states [2022-11-25 23:37:57,102 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:37:57,103 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 58 interpolants. [2022-11-25 23:37:57,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=568, Invalid=6404, Unknown=0, NotChecked=0, Total=6972 [2022-11-25 23:37:57,105 INFO L87 Difference]: Start difference. First operand 1185 states and 1841 transitions. Second operand has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-25 23:38:07,086 WARN L233 SmtUtils]: Spent 9.22s on a formula simplification. DAG size of input: 640 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:16,830 WARN L233 SmtUtils]: Spent 9.34s on a formula simplification. DAG size of input: 652 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:23,751 WARN L233 SmtUtils]: Spent 6.34s 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) [2022-11-25 23:38:31,923 WARN L233 SmtUtils]: Spent 7.23s on a formula simplification. DAG size of input: 603 DAG size of output: 557 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:39,700 WARN L233 SmtUtils]: Spent 7.39s on a formula simplification. DAG size of input: 615 DAG size of output: 564 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:38:50,888 WARN L233 SmtUtils]: Spent 5.09s 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) [2022-11-25 23:38:56,497 WARN L233 SmtUtils]: Spent 5.30s 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) [2022-11-25 23:39:03,260 WARN L233 SmtUtils]: Spent 6.29s on a formula simplification. DAG size of input: 649 DAG size of output: 622 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:40:36,913 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:40:36,913 INFO L93 Difference]: Finished difference Result 3010 states and 4710 transitions. [2022-11-25 23:40:36,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 65 states. [2022-11-25 23:40:36,914 INFO L78 Accepts]: Start accepts. Automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) Word has length 92 [2022-11-25 23:40:36,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:40:36,927 INFO L225 Difference]: With dead ends: 3010 [2022-11-25 23:40:36,927 INFO L226 Difference]: Without dead ends: 1848 [2022-11-25 23:40:36,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 202 SyntacticMatches, 4 SemanticMatches, 94 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3229 ImplicationChecksByTransitivity, 259.1s TimeCoverageRelationStatistics Valid=710, Invalid=8410, Unknown=0, NotChecked=0, Total=9120 [2022-11-25 23:40:36,935 INFO L413 NwaCegarLoop]: 757 mSDtfsCounter, 936 mSDsluCounter, 9945 mSDsCounter, 0 mSdLazyCounter, 21073 mSolverCounterSat, 121 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 962 SdHoareTripleChecker+Valid, 10702 SdHoareTripleChecker+Invalid, 21194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.4s SdHoareTripleChecker+Time, 121 IncrementalHoareTripleChecker+Valid, 21073 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 88.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:40:36,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [962 Valid, 10702 Invalid, 21194 Unknown, 0 Unchecked, 0.4s Time], IncrementalHoareTripleChecker [121 Valid, 21073 Invalid, 0 Unknown, 0 Unchecked, 88.0s Time] [2022-11-25 23:40:36,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1848 states. [2022-11-25 23:40:37,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1848 to 1712. [2022-11-25 23:40:37,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1712 states, 1215 states have (on average 1.5209876543209877) internal successors, (1848), 1287 states have internal predecessors, (1848), 381 states have call successors, (381), 99 states have call predecessors, (381), 115 states have return successors, (416), 374 states have call predecessors, (416), 376 states have call successors, (416) [2022-11-25 23:40:37,571 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1712 states to 1712 states and 2645 transitions. [2022-11-25 23:40:37,572 INFO L78 Accepts]: Start accepts. Automaton has 1712 states and 2645 transitions. Word has length 92 [2022-11-25 23:40:37,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:40:37,572 INFO L495 AbstractCegarLoop]: Abstraction has 1712 states and 2645 transitions. [2022-11-25 23:40:37,573 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 58 states, 47 states have (on average 1.148936170212766) internal successors, (54), 37 states have internal predecessors, (54), 16 states have call successors, (17), 11 states have call predecessors, (17), 11 states have return successors, (16), 16 states have call predecessors, (16), 15 states have call successors, (16) [2022-11-25 23:40:37,573 INFO L276 IsEmpty]: Start isEmpty. Operand 1712 states and 2645 transitions. [2022-11-25 23:40:37,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 23:40:37,575 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:37,576 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:37,590 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-25 23:40:37,785 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:40:37,785 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:40:37,785 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:37,785 INFO L85 PathProgramCache]: Analyzing trace with hash 370767210, now seen corresponding path program 1 times [2022-11-25 23:40:37,785 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:40:37,786 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [840817474] [2022-11-25 23:40:37,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:37,786 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:40:37,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:40:37,922 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 23:40:37,923 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:40:37,923 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [840817474] [2022-11-25 23:40:37,923 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [840817474] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:40:37,923 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:40:37,923 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 23:40:37,924 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [921445919] [2022-11-25 23:40:37,924 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:40:37,924 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 23:40:37,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:40:37,925 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 23:40:37,925 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:40:37,926 INFO L87 Difference]: Start difference. First operand 1712 states and 2645 transitions. Second operand has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:40:39,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:40:39,205 INFO L93 Difference]: Finished difference Result 4825 states and 7555 transitions. [2022-11-25 23:40:39,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 23:40:39,206 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) Word has length 93 [2022-11-25 23:40:39,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:40:39,226 INFO L225 Difference]: With dead ends: 4825 [2022-11-25 23:40:39,227 INFO L226 Difference]: Without dead ends: 3260 [2022-11-25 23:40:39,234 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 23:40:39,235 INFO L413 NwaCegarLoop]: 982 mSDtfsCounter, 499 mSDsluCounter, 491 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 499 SdHoareTripleChecker+Valid, 1473 SdHoareTripleChecker+Invalid, 102 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 23:40:39,235 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [499 Valid, 1473 Invalid, 102 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 23:40:39,239 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3260 states. [2022-11-25 23:40:40,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3260 to 3257. [2022-11-25 23:40:40,308 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3257 states, 2313 states have (on average 1.5296152183311715) internal successors, (3538), 2451 states have internal predecessors, (3538), 726 states have call successors, (726), 185 states have call predecessors, (726), 217 states have return successors, (810), 718 states have call predecessors, (810), 721 states have call successors, (810) [2022-11-25 23:40:40,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3257 states to 3257 states and 5074 transitions. [2022-11-25 23:40:40,323 INFO L78 Accepts]: Start accepts. Automaton has 3257 states and 5074 transitions. Word has length 93 [2022-11-25 23:40:40,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:40:40,324 INFO L495 AbstractCegarLoop]: Abstraction has 3257 states and 5074 transitions. [2022-11-25 23:40:40,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 18.333333333333332) internal successors, (55), 3 states have internal predecessors, (55), 3 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 2 states have call successors, (16) [2022-11-25 23:40:40,324 INFO L276 IsEmpty]: Start isEmpty. Operand 3257 states and 5074 transitions. [2022-11-25 23:40:40,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 23:40:40,327 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:40:40,327 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 23:40:40,327 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:40:40,327 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:40:40,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:40:40,328 INFO L85 PathProgramCache]: Analyzing trace with hash -1797538096, now seen corresponding path program 1 times [2022-11-25 23:40:40,328 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:40:40,328 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [955147638] [2022-11-25 23:40:40,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:40,329 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:40:40,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:40:41,324 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:40:41,325 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:40:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [955147638] [2022-11-25 23:40:41,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [955147638] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:40:41,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782770631] [2022-11-25 23:40:41,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:40:41,325 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:40:41,325 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:40:41,335 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:40:41,364 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_86607574-f25a-481f-868a-86dc47a35ccd/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 23:40:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:40:41,760 INFO L263 TraceCheckSpWp]: Trace formula consists of 1812 conjuncts, 36 conjunts are in the unsatisfiable core [2022-11-25 23:40:41,775 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:40:43,630 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:40:43,630 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:40:46,585 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:40:46,585 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [782770631] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:40:46,585 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1156071399] [2022-11-25 23:40:46,589 INFO L159 IcfgInterpreter]: Started Sifa with 84 locations of interest [2022-11-25 23:40:46,589 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:40:46,590 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:40:46,590 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:40:46,590 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:40:52,021 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 584 for LOIs [2022-11-25 23:40:56,046 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 584 for LOIs [2022-11-25 23:40:58,815 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 88 for LOIs [2022-11-25 23:40:59,134 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 28 for LOIs [2022-11-25 23:40:59,145 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 591 for LOIs [2022-11-25 23:41:03,312 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 414 for LOIs [2022-11-25 23:41:03,383 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 84 for LOIs [2022-11-25 23:41:03,530 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-25 23:41:03,552 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 554 for LOIs [2022-11-25 23:41:06,646 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 829 for LOIs [2022-11-25 23:42:13,553 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 656 for LOIs [2022-11-25 23:42:14,286 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:42:33,943 WARN L233 SmtUtils]: Spent 11.04s on a formula simplification. DAG size of input: 656 DAG size of output: 519 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:45,638 WARN L233 SmtUtils]: Spent 11.28s on a formula simplification. DAG size of input: 696 DAG size of output: 533 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:42:54,131 WARN L233 SmtUtils]: Spent 8.15s 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) [2022-11-25 23:43:02,648 WARN L233 SmtUtils]: Spent 8.14s 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) [2022-11-25 23:43:23,888 WARN L233 SmtUtils]: Spent 20.70s 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) [2022-11-25 23:43:54,273 WARN L233 SmtUtils]: Spent 28.49s on a formula simplification. DAG size of input: 983 DAG size of output: 701 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)