./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 839c364b Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7 --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 b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 --- Real Ultimate output --- This is Ultimate 0.2.2-hotfix-svcomp22-839c364 [2021-11-25 19:13:00,965 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-25 19:13:00,968 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-25 19:13:01,027 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-25 19:13:01,028 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-25 19:13:01,029 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-25 19:13:01,031 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-25 19:13:01,033 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-25 19:13:01,035 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-25 19:13:01,036 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-25 19:13:01,037 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-25 19:13:01,038 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-25 19:13:01,039 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-25 19:13:01,040 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-25 19:13:01,042 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-25 19:13:01,043 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-25 19:13:01,044 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-25 19:13:01,045 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-25 19:13:01,048 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-25 19:13:01,050 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-25 19:13:01,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-25 19:13:01,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-25 19:13:01,055 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-25 19:13:01,056 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-25 19:13:01,060 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-25 19:13:01,060 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-25 19:13:01,061 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-25 19:13:01,062 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-25 19:13:01,063 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-25 19:13:01,064 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-25 19:13:01,065 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-25 19:13:01,066 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-25 19:13:01,067 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-25 19:13:01,068 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-25 19:13:01,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-25 19:13:01,069 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-25 19:13:01,070 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-25 19:13:01,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-25 19:13:01,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-25 19:13:01,073 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-25 19:13:01,074 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-25 19:13:01,075 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-25 19:13:01,100 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-25 19:13:01,100 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-25 19:13:01,101 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-25 19:13:01,101 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-25 19:13:01,102 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-25 19:13:01,103 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-25 19:13:01,103 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-25 19:13:01,103 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-25 19:13:01,104 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-25 19:13:01,104 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-25 19:13:01,105 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-25 19:13:01,105 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-25 19:13:01,105 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-25 19:13:01,106 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-25 19:13:01,106 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-25 19:13:01,106 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-25 19:13:01,106 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-25 19:13:01,107 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2021-11-25 19:13:01,107 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-25 19:13:01,108 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-25 19:13:01,108 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-25 19:13:01,108 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-25 19:13:01,108 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-25 19:13:01,109 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-25 19:13:01,109 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-25 19:13:01,109 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-25 19:13:01,109 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-25 19:13:01,110 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-25 19:13:01,110 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-25 19:13:01,110 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-25 19:13:01,110 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-25 19:13:01,111 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-25 19:13:01,111 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:01,111 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-25 19:13:01,111 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-25 19:13:01,112 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-25 19:13:01,112 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-25 19:13:01,112 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-25 19:13:01,112 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-25 19:13:01,113 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-25 19:13:01,113 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-25 19:13:01,113 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b90339f9090766921b1c16763101e1e0bf56713d98b802bfaa51b02dabc40a61 [2021-11-25 19:13:01,374 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-25 19:13:01,397 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-25 19:13:01,399 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-25 19:13:01,400 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-25 19:13:01,401 INFO L275 PluginConnector]: CDTParser initialized [2021-11-25 19:13:01,402 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/../../sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-25 19:13:01,465 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/data/22a5bbb68/0d2f81b813c340d8895b681035c7d978/FLAG49cfd8de4 [2021-11-25 19:13:02,027 INFO L306 CDTParser]: Found 1 translation units. [2021-11-25 19:13:02,027 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c [2021-11-25 19:13:02,064 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/data/22a5bbb68/0d2f81b813c340d8895b681035c7d978/FLAG49cfd8de4 [2021-11-25 19:13:02,285 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/data/22a5bbb68/0d2f81b813c340d8895b681035c7d978 [2021-11-25 19:13:02,287 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-25 19:13:02,289 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-25 19:13:02,295 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:02,295 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-25 19:13:02,299 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-25 19:13:02,299 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:02" (1/1) ... [2021-11-25 19:13:02,301 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15139232 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:02, skipping insertion in model container [2021-11-25 19:13:02,302 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 07:13:02" (1/1) ... [2021-11-25 19:13:02,309 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-25 19:13:02,413 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-25 19:13:02,791 WARN L230 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_20199f16-dae6-45af-8fd0-4cf3aeedf28d/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-25 19:13:02,919 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:02,928 INFO L203 MainTranslator]: Completed pre-run [2021-11-25 19:13:03,024 WARN L230 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_20199f16-dae6-45af-8fd0-4cf3aeedf28d/sv-benchmarks/c/product-lines/elevator_spec1_product27.cil.c[35415,35428] [2021-11-25 19:13:03,079 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-25 19:13:03,110 INFO L208 MainTranslator]: Completed translation [2021-11-25 19:13:03,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03 WrapperNode [2021-11-25 19:13:03,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-25 19:13:03,111 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:03,112 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-25 19:13:03,112 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-25 19:13:03,119 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,147 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,240 INFO L137 Inliner]: procedures = 95, calls = 343, calls flagged for inlining = 27, calls inlined = 24, statements flattened = 1152 [2021-11-25 19:13:03,240 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-25 19:13:03,241 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-25 19:13:03,241 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-25 19:13:03,241 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-25 19:13:03,248 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,248 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,255 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,256 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,330 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,352 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,368 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-25 19:13:03,369 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-25 19:13:03,369 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-25 19:13:03,369 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-25 19:13:03,370 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (1/1) ... [2021-11-25 19:13:03,379 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-25 19:13:03,390 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:03,422 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-25 19:13:03,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-25 19:13:03,481 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2021-11-25 19:13:03,481 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2021-11-25 19:13:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-25 19:13:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2021-11-25 19:13:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2021-11-25 19:13:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2021-11-25 19:13:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2021-11-25 19:13:03,482 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2021-11-25 19:13:03,482 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2021-11-25 19:13:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2021-11-25 19:13:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2021-11-25 19:13:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2021-11-25 19:13:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2021-11-25 19:13:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2021-11-25 19:13:03,483 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2021-11-25 19:13:03,483 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2021-11-25 19:13:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2021-11-25 19:13:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2021-11-25 19:13:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2021-11-25 19:13:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2021-11-25 19:13:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2021-11-25 19:13:03,484 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2021-11-25 19:13:03,484 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2021-11-25 19:13:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2021-11-25 19:13:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2021-11-25 19:13:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2021-11-25 19:13:03,485 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2021-11-25 19:13:03,485 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2021-11-25 19:13:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2021-11-25 19:13:03,486 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2021-11-25 19:13:03,486 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2021-11-25 19:13:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2021-11-25 19:13:03,488 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2021-11-25 19:13:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-25 19:13:03,488 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2021-11-25 19:13:03,488 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2021-11-25 19:13:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2021-11-25 19:13:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2021-11-25 19:13:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2021-11-25 19:13:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2021-11-25 19:13:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2021-11-25 19:13:03,489 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2021-11-25 19:13:03,489 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2021-11-25 19:13:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-25 19:13:03,490 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2021-11-25 19:13:03,491 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2021-11-25 19:13:03,491 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2021-11-25 19:13:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2021-11-25 19:13:03,492 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2021-11-25 19:13:03,492 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2021-11-25 19:13:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-25 19:13:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-25 19:13:03,493 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2021-11-25 19:13:03,493 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2021-11-25 19:13:03,718 INFO L236 CfgBuilder]: Building ICFG [2021-11-25 19:13:03,720 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-25 19:13:04,833 INFO L277 CfgBuilder]: Performing block encoding [2021-11-25 19:13:05,530 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-25 19:13:05,530 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-11-25 19:13:05,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:05 BoogieIcfgContainer [2021-11-25 19:13:05,535 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-25 19:13:05,539 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-25 19:13:05,539 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-25 19:13:05,542 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-25 19:13:05,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 07:13:02" (1/3) ... [2021-11-25 19:13:05,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2513cd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:05, skipping insertion in model container [2021-11-25 19:13:05,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 07:13:03" (2/3) ... [2021-11-25 19:13:05,544 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2513cd8c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 07:13:05, skipping insertion in model container [2021-11-25 19:13:05,544 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 07:13:05" (3/3) ... [2021-11-25 19:13:05,546 INFO L111 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product27.cil.c [2021-11-25 19:13:05,554 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-25 19:13:05,554 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2021-11-25 19:13:05,623 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-25 19:13:05,633 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-11-25 19:13:05,633 INFO L340 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-11-25 19:13:05,671 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2021-11-25 19:13:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2021-11-25 19:13:05,700 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:05,701 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:05,702 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:05,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:05,713 INFO L85 PathProgramCache]: Analyzing trace with hash 1696278331, now seen corresponding path program 1 times [2021-11-25 19:13:05,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:05,725 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [197334015] [2021-11-25 19:13:05,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:05,726 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:06,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:06,260 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:13:06,260 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:06,261 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [197334015] [2021-11-25 19:13:06,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [197334015] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:06,262 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:06,262 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-11-25 19:13:06,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [254842989] [2021-11-25 19:13:06,264 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:06,268 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-25 19:13:06,268 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-25 19:13:06,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:13:06,302 INFO L87 Difference]: Start difference. First operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-25 19:13:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:06,470 INFO L93 Difference]: Finished difference Result 399 states and 630 transitions. [2021-11-25 19:13:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-25 19:13:06,473 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2021-11-25 19:13:06,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:06,493 INFO L225 Difference]: With dead ends: 399 [2021-11-25 19:13:06,493 INFO L226 Difference]: Without dead ends: 377 [2021-11-25 19:13:06,497 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-25 19:13:06,501 INFO L933 BasicCegarLoop]: 560 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:06,502 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:06,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2021-11-25 19:13:06,614 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2021-11-25 19:13:06,617 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 272 states have internal predecessors, (399), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2021-11-25 19:13:06,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 592 transitions. [2021-11-25 19:13:06,660 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 592 transitions. Word has length 88 [2021-11-25 19:13:06,662 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:06,662 INFO L470 AbstractCegarLoop]: Abstraction has 377 states and 592 transitions. [2021-11-25 19:13:06,662 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2021-11-25 19:13:06,662 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 592 transitions. [2021-11-25 19:13:06,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-11-25 19:13:06,671 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:06,672 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:06,672 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-25 19:13:06,672 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:06,673 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:06,673 INFO L85 PathProgramCache]: Analyzing trace with hash -1539292562, now seen corresponding path program 1 times [2021-11-25 19:13:06,674 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:06,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [961581214] [2021-11-25 19:13:06,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:06,674 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:06,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:06,875 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:13:06,875 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:06,876 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [961581214] [2021-11-25 19:13:06,876 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [961581214] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:06,876 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:06,876 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-25 19:13:06,876 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1911852741] [2021-11-25 19:13:06,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:06,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-25 19:13:06,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:06,879 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-25 19:13:06,879 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-25 19:13:06,879 INFO L87 Difference]: Start difference. First operand 377 states and 592 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:13:09,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:09,056 INFO L93 Difference]: Finished difference Result 1148 states and 1837 transitions. [2021-11-25 19:13:09,058 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-11-25 19:13:09,058 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2021-11-25 19:13:09,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:09,073 INFO L225 Difference]: With dead ends: 1148 [2021-11-25 19:13:09,073 INFO L226 Difference]: Without dead ends: 794 [2021-11-25 19:13:09,084 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2021-11-25 19:13:09,086 INFO L933 BasicCegarLoop]: 613 mSDtfsCounter, 1135 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 2239 mSolverCounterSat, 451 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1212 SdHoareTripleChecker+Valid, 1892 SdHoareTripleChecker+Invalid, 2690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 451 IncrementalHoareTripleChecker+Valid, 2239 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:09,087 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1212 Valid, 1892 Invalid, 2690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [451 Valid, 2239 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2021-11-25 19:13:09,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2021-11-25 19:13:09,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 745. [2021-11-25 19:13:09,175 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 510 states have (on average 1.592156862745098) internal successors, (812), 543 states have internal predecessors, (812), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-25 19:13:09,184 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1191 transitions. [2021-11-25 19:13:09,185 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1191 transitions. Word has length 89 [2021-11-25 19:13:09,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:09,188 INFO L470 AbstractCegarLoop]: Abstraction has 745 states and 1191 transitions. [2021-11-25 19:13:09,189 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2021-11-25 19:13:09,189 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1191 transitions. [2021-11-25 19:13:09,197 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2021-11-25 19:13:09,197 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:09,198 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:09,198 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-25 19:13:09,198 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:09,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:09,199 INFO L85 PathProgramCache]: Analyzing trace with hash -571796844, now seen corresponding path program 1 times [2021-11-25 19:13:09,199 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:09,200 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1729408071] [2021-11-25 19:13:09,200 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:09,200 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:09,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:09,479 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:13:09,480 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:09,480 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1729408071] [2021-11-25 19:13:09,480 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1729408071] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:09,481 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:09,481 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-25 19:13:09,481 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540677612] [2021-11-25 19:13:09,483 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:09,484 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-25 19:13:09,485 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:09,485 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-25 19:13:09,486 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:13:09,486 INFO L87 Difference]: Start difference. First operand 745 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 19:13:10,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:10,018 INFO L93 Difference]: Finished difference Result 816 states and 1303 transitions. [2021-11-25 19:13:10,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:13:10,019 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2021-11-25 19:13:10,019 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:10,030 INFO L225 Difference]: With dead ends: 816 [2021-11-25 19:13:10,030 INFO L226 Difference]: Without dead ends: 801 [2021-11-25 19:13:10,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-11-25 19:13:10,039 INFO L933 BasicCegarLoop]: 556 mSDtfsCounter, 684 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 685 SdHoareTripleChecker+Valid, 1472 SdHoareTripleChecker+Invalid, 341 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:10,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [685 Valid, 1472 Invalid, 341 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-25 19:13:10,043 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2021-11-25 19:13:10,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2021-11-25 19:13:10,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.5875486381322956) internal successors, (816), 547 states have internal predecessors, (816), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-25 19:13:10,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1195 transitions. [2021-11-25 19:13:10,109 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1195 transitions. Word has length 93 [2021-11-25 19:13:10,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:10,112 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1195 transitions. [2021-11-25 19:13:10,112 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2021-11-25 19:13:10,112 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1195 transitions. [2021-11-25 19:13:10,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2021-11-25 19:13:10,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:10,118 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:10,119 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-25 19:13:10,119 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:10,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:10,120 INFO L85 PathProgramCache]: Analyzing trace with hash -840832870, now seen corresponding path program 1 times [2021-11-25 19:13:10,120 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:10,120 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1032814979] [2021-11-25 19:13:10,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,121 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:10,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:10,327 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2021-11-25 19:13:10,327 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:10,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1032814979] [2021-11-25 19:13:10,328 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1032814979] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:10,328 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-25 19:13:10,328 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-25 19:13:10,328 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1983240141] [2021-11-25 19:13:10,329 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:10,329 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-25 19:13:10,329 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:10,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-25 19:13:10,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-25 19:13:10,330 INFO L87 Difference]: Start difference. First operand 749 states and 1195 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-25 19:13:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:10,503 INFO L93 Difference]: Finished difference Result 768 states and 1219 transitions. [2021-11-25 19:13:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-25 19:13:10,504 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2021-11-25 19:13:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:10,510 INFO L225 Difference]: With dead ends: 768 [2021-11-25 19:13:10,511 INFO L226 Difference]: Without dead ends: 753 [2021-11-25 19:13:10,511 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-25 19:13:10,512 INFO L933 BasicCegarLoop]: 559 mSDtfsCounter, 30 mSDsluCounter, 1739 mSDsCounter, 0 mSdLazyCounter, 142 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2200 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 142 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:10,513 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [37 Valid, 2200 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 142 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:10,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2021-11-25 19:13:10,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2021-11-25 19:13:10,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.583657587548638) internal successors, (814), 547 states have internal predecessors, (814), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-25 19:13:10,564 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1193 transitions. [2021-11-25 19:13:10,570 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1193 transitions. Word has length 98 [2021-11-25 19:13:10,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:10,571 INFO L470 AbstractCegarLoop]: Abstraction has 749 states and 1193 transitions. [2021-11-25 19:13:10,571 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2021-11-25 19:13:10,571 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1193 transitions. [2021-11-25 19:13:10,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2021-11-25 19:13:10,574 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:10,574 INFO L514 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:10,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-25 19:13:10,575 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:10,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:10,577 INFO L85 PathProgramCache]: Analyzing trace with hash 1385729553, now seen corresponding path program 1 times [2021-11-25 19:13:10,577 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:10,578 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [120917426] [2021-11-25 19:13:10,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:10,578 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:10,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:11,129 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2021-11-25 19:13:11,129 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:11,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [120917426] [2021-11-25 19:13:11,129 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [120917426] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:11,130 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1848851235] [2021-11-25 19:13:11,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:11,130 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:11,130 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:11,134 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:11,164 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-25 19:13:11,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:11,514 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-25 19:13:11,530 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:11,862 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2021-11-25 19:13:11,862 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-25 19:13:11,863 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1848851235] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-25 19:13:11,863 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-25 19:13:11,863 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [22] total 24 [2021-11-25 19:13:11,863 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1410926303] [2021-11-25 19:13:11,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-25 19:13:11,864 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-25 19:13:11,865 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2021-11-25 19:13:11,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-25 19:13:11,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=480, Unknown=0, NotChecked=0, Total=552 [2021-11-25 19:13:11,866 INFO L87 Difference]: Start difference. First operand 749 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-25 19:13:12,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-25 19:13:12,062 INFO L93 Difference]: Finished difference Result 832 states and 1317 transitions. [2021-11-25 19:13:12,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-25 19:13:12,062 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2021-11-25 19:13:12,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-25 19:13:12,069 INFO L225 Difference]: With dead ends: 832 [2021-11-25 19:13:12,069 INFO L226 Difference]: Without dead ends: 817 [2021-11-25 19:13:12,070 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 138 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 123 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=524, Unknown=0, NotChecked=0, Total=600 [2021-11-25 19:13:12,071 INFO L933 BasicCegarLoop]: 594 mSDtfsCounter, 44 mSDsluCounter, 1200 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-25 19:13:12,072 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [51 Valid, 1729 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-25 19:13:12,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2021-11-25 19:13:12,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 753. [2021-11-25 19:13:12,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 518 states have (on average 1.579150579150579) internal successors, (818), 551 states have internal predecessors, (818), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2021-11-25 19:13:12,122 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2021-11-25 19:13:12,122 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 105 [2021-11-25 19:13:12,123 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-25 19:13:12,123 INFO L470 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2021-11-25 19:13:12,123 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2021-11-25 19:13:12,124 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2021-11-25 19:13:12,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2021-11-25 19:13:12,127 INFO L506 BasicCegarLoop]: Found error trace [2021-11-25 19:13:12,128 INFO L514 BasicCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-25 19:13:12,168 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-25 19:13:12,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:12,356 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-25 19:13:12,356 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-25 19:13:12,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1502716547, now seen corresponding path program 1 times [2021-11-25 19:13:12,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2021-11-25 19:13:12,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [540656203] [2021-11-25 19:13:12,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:12,357 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-25 19:13:12,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:12,679 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2021-11-25 19:13:12,680 INFO L139 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2021-11-25 19:13:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [540656203] [2021-11-25 19:13:12,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [540656203] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-25 19:13:12,680 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1762294285] [2021-11-25 19:13:12,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-25 19:13:12,681 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-25 19:13:12,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 [2021-11-25 19:13:12,684 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-25 19:13:12,692 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_20199f16-dae6-45af-8fd0-4cf3aeedf28d/bin/utaipan-eEHZpOm5b7/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-25 19:13:13,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-25 19:13:13,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 82 conjunts are in the unsatisfiable core [2021-11-25 19:13:13,131 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-25 19:13:15,206 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 32 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-25 19:13:15,206 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-25 19:14:11,414 WARN L227 SmtUtils]: Spent 51.69s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:15:03,181 WARN L227 SmtUtils]: Spent 51.22s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 234] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2021-11-25 19:15:03,978 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2021-11-25 19:15:03,978 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1762294285] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-25 19:15:03,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [795009128] [2021-11-25 19:15:04,004 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2021-11-25 19:15:04,004 INFO L166 IcfgInterpreter]: Building call graph [2021-11-25 19:15:04,008 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2021-11-25 19:15:04,013 INFO L176 IcfgInterpreter]: Starting interpretation [2021-11-25 19:15:04,014 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2021-11-25 19:15:24,900 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 534 for LOIs [2021-11-25 19:15:25,585 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2021-11-25 19:18:53,390 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2021-11-25 19:19:44,946 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2021-11-25 19:19:47,040 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2021-11-25 19:19:49,103 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 78 for LOIs [2021-11-25 19:19:49,149 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2021-11-25 19:19:49,179 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2021-11-25 19:19:52,964 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 491 for LOIs [2021-11-25 19:19:53,586 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2021-11-25 19:19:54,530 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2021-11-25 19:19:54,613 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2021-11-25 19:19:57,337 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2021-11-25 19:20:03,418 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2021-11-25 19:20:03,891 INFO L180 IcfgInterpreter]: Interpretation finished [2021-11-25 19:20:28,192 WARN L227 SmtUtils]: Spent 10.12s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:20:40,180 WARN L227 SmtUtils]: Spent 10.51s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:20:46,974 WARN L227 SmtUtils]: Spent 6.25s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:20:53,835 WARN L227 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:21:06,981 WARN L227 SmtUtils]: Spent 10.04s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:21:15,676 WARN L227 SmtUtils]: Spent 6.83s on a formula simplification that was a NOOP. DAG size: 836 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:22:26,227 WARN L227 SmtUtils]: Spent 5.23s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:22:32,108 WARN L227 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 641 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:23:01,154 WARN L227 SmtUtils]: Spent 5.03s on a formula simplification. DAG size of input: 653 DAG size of output: 622 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:23:52,679 WARN L227 SmtUtils]: Spent 17.20s on a formula simplification. DAG size of input: 723 DAG size of output: 631 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:24:17,152 WARN L227 SmtUtils]: Spent 17.59s on a formula simplification. DAG size of input: 725 DAG size of output: 633 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-25 19:24:35,384 WARN L227 SmtUtils]: Spent 14.38s on a formula simplification. DAG size of input: 730 DAG size of output: 627 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)