./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh --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 bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 --- 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-2329fc7 [2022-12-14 06:26:39,222 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 06:26:39,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 06:26:39,244 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 06:26:39,244 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 06:26:39,245 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 06:26:39,247 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 06:26:39,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 06:26:39,250 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 06:26:39,250 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 06:26:39,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 06:26:39,252 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 06:26:39,253 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 06:26:39,254 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 06:26:39,255 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 06:26:39,256 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 06:26:39,257 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 06:26:39,258 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 06:26:39,259 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 06:26:39,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 06:26:39,262 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 06:26:39,263 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 06:26:39,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 06:26:39,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 06:26:39,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 06:26:39,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 06:26:39,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 06:26:39,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 06:26:39,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 06:26:39,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 06:26:39,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 06:26:39,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 06:26:39,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 06:26:39,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 06:26:39,274 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 06:26:39,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 06:26:39,275 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 06:26:39,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 06:26:39,276 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 06:26:39,276 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 06:26:39,277 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 06:26:39,277 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 06:26:39,298 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 06:26:39,298 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 06:26:39,298 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 06:26:39,298 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 06:26:39,299 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 06:26:39,299 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 06:26:39,299 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 06:26:39,300 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 06:26:39,300 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 06:26:39,301 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 06:26:39,301 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 06:26:39,301 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 06:26:39,301 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 06:26:39,302 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 06:26:39,302 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 06:26:39,303 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 06:26:39,303 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 06:26:39,303 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 06:26:39,303 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 06:26:39,303 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 06:26:39,303 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:26:39,304 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 06:26:39,304 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 06:26:39,304 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_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bff47839034fd9cbb920af5a298a9e1741d5a9c8d5dbee3233345fdc3046fb27 [2022-12-14 06:26:39,474 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 06:26:39,494 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 06:26:39,497 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 06:26:39,498 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 06:26:39,498 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 06:26:39,499 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2022-12-14 06:26:42,056 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 06:26:42,287 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 06:26:42,287 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c [2022-12-14 06:26:42,299 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/data/72130e960/b82eb0f879534fb483ad95c1b4fd7130/FLAG607bfc6d4 [2022-12-14 06:26:42,644 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/data/72130e960/b82eb0f879534fb483ad95c1b4fd7130 [2022-12-14 06:26:42,648 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 06:26:42,651 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 06:26:42,653 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 06:26:42,653 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 06:26:42,659 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 06:26:42,660 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:26:42" (1/1) ... [2022-12-14 06:26:42,662 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f3c513c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:42, skipping insertion in model container [2022-12-14 06:26:42,662 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 06:26:42" (1/1) ... [2022-12-14 06:26:42,670 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 06:26:42,711 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 06:26:42,993 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_5cc4a276-8c11-429d-ab3d-a44314a1058b/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-12-14 06:26:43,026 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:26:43,036 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 06:26:43,100 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_5cc4a276-8c11-429d-ab3d-a44314a1058b/sv-benchmarks/c/product-lines/elevator_spec1_product28.cil.c[63597,63610] [2022-12-14 06:26:43,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 06:26:43,129 INFO L208 MainTranslator]: Completed translation [2022-12-14 06:26:43,129 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43 WrapperNode [2022-12-14 06:26:43,129 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 06:26:43,130 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 06:26:43,130 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 06:26:43,130 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 06:26:43,136 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,152 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,183 INFO L138 Inliner]: procedures = 97, calls = 349, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 1167 [2022-12-14 06:26:43,183 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 06:26:43,184 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 06:26:43,184 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 06:26:43,184 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 06:26:43,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,192 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,195 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,195 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,213 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,216 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,219 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,224 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 06:26:43,224 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 06:26:43,224 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 06:26:43,225 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 06:26:43,225 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (1/1) ... [2022-12-14 06:26:43,230 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 06:26:43,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:26:43,274 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 06:26:43,276 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 06:26:43,315 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 06:26:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 06:26:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 06:26:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 06:26:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 06:26:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 06:26:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 06:26:43,316 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 06:26:43,316 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 06:26:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 06:26:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 06:26:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 06:26:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 06:26:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 06:26:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 06:26:43,317 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 06:26:43,317 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 06:26:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 06:26:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 06:26:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 06:26:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 06:26:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 06:26:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 06:26:43,318 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 06:26:43,318 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 06:26:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 06:26:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 06:26:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 06:26:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 06:26:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 06:26:43,319 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 06:26:43,319 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 06:26:43,320 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 06:26:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 06:26:43,320 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 06:26:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 06:26:43,320 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 06:26:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-12-14 06:26:43,320 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__empty [2022-12-14 06:26:43,320 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 06:26:43,320 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 06:26:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 06:26:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 06:26:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 06:26:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 06:26:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 06:26:43,321 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 06:26:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 06:26:43,321 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 06:26:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 06:26:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 06:26:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 06:26:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 06:26:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 06:26:43,322 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-12-14 06:26:43,322 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-12-14 06:26:43,429 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 06:26:43,431 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 06:26:44,191 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 06:26:44,630 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 06:26:44,631 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 06:26:44,633 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:26:44 BoogieIcfgContainer [2022-12-14 06:26:44,633 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 06:26:44,635 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 06:26:44,635 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 06:26:44,637 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 06:26:44,637 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 06:26:42" (1/3) ... [2022-12-14 06:26:44,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5101798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:26:44, skipping insertion in model container [2022-12-14 06:26:44,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 06:26:43" (2/3) ... [2022-12-14 06:26:44,638 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5101798f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 06:26:44, skipping insertion in model container [2022-12-14 06:26:44,638 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 06:26:44" (3/3) ... [2022-12-14 06:26:44,639 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product28.cil.c [2022-12-14 06:26:44,653 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 06:26:44,653 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 06:26:44,694 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 06:26:44,699 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;@259d02b2, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 06:26:44,699 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 06:26:44,703 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 260 states have (on average 1.5846153846153845) internal successors, (412), 283 states have internal predecessors, (412), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) [2022-12-14 06:26:44,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-12-14 06:26:44,711 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:44,712 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] [2022-12-14 06:26:44,712 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:44,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:44,716 INFO L85 PathProgramCache]: Analyzing trace with hash -118960645, now seen corresponding path program 1 times [2022-12-14 06:26:44,723 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:44,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891166302] [2022-12-14 06:26:44,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:44,724 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:44,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:45,285 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-14 06:26:45,285 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:45,286 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891166302] [2022-12-14 06:26:45,286 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1891166302] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:45,287 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:26:45,287 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:26:45,288 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [726606951] [2022-12-14 06:26:45,289 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:45,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:26:45,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:45,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:26:45,323 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:26:45,326 INFO L87 Difference]: Start difference. First operand has 390 states, 260 states have (on average 1.5846153846153845) internal successors, (412), 283 states have internal predecessors, (412), 102 states have call successors, (102), 26 states have call predecessors, (102), 26 states have return successors, (102), 95 states have call predecessors, (102), 102 states have call successors, (102) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 06:26:46,947 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:26:46,947 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-12-14 06:26:46,948 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:26:46,949 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2022-12-14 06:26:46,949 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:26:46,962 INFO L225 Difference]: With dead ends: 1260 [2022-12-14 06:26:46,963 INFO L226 Difference]: Without dead ends: 887 [2022-12-14 06:26:46,967 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:26:46,969 INFO L413 NwaCegarLoop]: 358 mSDtfsCounter, 1236 mSDsluCounter, 763 mSDsCounter, 0 mSdLazyCounter, 1661 mSolverCounterSat, 458 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1304 SdHoareTripleChecker+Valid, 1121 SdHoareTripleChecker+Invalid, 2119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 458 IncrementalHoareTripleChecker+Valid, 1661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:26:46,970 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1304 Valid, 1121 Invalid, 2119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [458 Valid, 1661 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2022-12-14 06:26:46,984 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-12-14 06:26:47,050 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-12-14 06:26:47,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 559 states have (on average 1.5992844364937389) internal successors, (894), 589 states have internal predecessors, (894), 195 states have call successors, (195), 44 states have call predecessors, (195), 45 states have return successors, (197), 179 states have call predecessors, (197), 190 states have call successors, (197) [2022-12-14 06:26:47,057 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-12-14 06:26:47,058 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-12-14 06:26:47,058 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:26:47,058 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-12-14 06:26:47,059 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-12-14 06:26:47,059 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-12-14 06:26:47,065 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2022-12-14 06:26:47,065 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:47,065 INFO L195 NwaCegarLoop]: 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, 1] [2022-12-14 06:26:47,066 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 06:26:47,066 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash 1772543532, now seen corresponding path program 1 times [2022-12-14 06:26:47,066 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1690384437] [2022-12-14 06:26:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:47,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:47,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:47,421 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:26:47,422 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:47,422 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1690384437] [2022-12-14 06:26:47,422 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1690384437] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:47,422 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:26:47,422 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 06:26:47,422 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282623862] [2022-12-14 06:26:47,423 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:47,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 06:26:47,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 06:26:47,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:26:47,426 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 06:26:48,887 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:26:48,888 INFO L93 Difference]: Finished difference Result 2486 states and 4046 transitions. [2022-12-14 06:26:48,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 06:26:48,888 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 99 [2022-12-14 06:26:48,889 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:26:48,897 INFO L225 Difference]: With dead ends: 2486 [2022-12-14 06:26:48,897 INFO L226 Difference]: Without dead ends: 1710 [2022-12-14 06:26:48,901 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 06:26:48,901 INFO L413 NwaCegarLoop]: 388 mSDtfsCounter, 1166 mSDsluCounter, 1277 mSDsCounter, 0 mSdLazyCounter, 2578 mSolverCounterSat, 447 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1243 SdHoareTripleChecker+Valid, 1665 SdHoareTripleChecker+Invalid, 3025 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 447 IncrementalHoareTripleChecker+Valid, 2578 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-14 06:26:48,902 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1243 Valid, 1665 Invalid, 3025 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [447 Valid, 2578 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-14 06:26:48,904 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1710 states. [2022-12-14 06:26:48,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1710 to 1623. [2022-12-14 06:26:48,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1623 states, 1146 states have (on average 1.6055846422338569) internal successors, (1840), 1202 states have internal predecessors, (1840), 385 states have call successors, (385), 84 states have call predecessors, (385), 91 states have return successors, (412), 360 states have call predecessors, (412), 380 states have call successors, (412) [2022-12-14 06:26:49,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1623 states to 1623 states and 2637 transitions. [2022-12-14 06:26:49,006 INFO L78 Accepts]: Start accepts. Automaton has 1623 states and 2637 transitions. Word has length 99 [2022-12-14 06:26:49,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:26:49,006 INFO L495 AbstractCegarLoop]: Abstraction has 1623 states and 2637 transitions. [2022-12-14 06:26:49,006 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.571428571428571) internal successors, (53), 7 states have internal predecessors, (53), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-12-14 06:26:49,007 INFO L276 IsEmpty]: Start isEmpty. Operand 1623 states and 2637 transitions. [2022-12-14 06:26:49,010 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-12-14 06:26:49,010 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:49,010 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1] [2022-12-14 06:26:49,010 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 06:26:49,011 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:49,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:49,011 INFO L85 PathProgramCache]: Analyzing trace with hash -775067947, now seen corresponding path program 1 times [2022-12-14 06:26:49,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:49,011 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [544084035] [2022-12-14 06:26:49,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:49,012 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:49,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:49,290 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:26:49,291 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:49,291 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [544084035] [2022-12-14 06:26:49,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [544084035] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:49,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:26:49,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 06:26:49,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1204582709] [2022-12-14 06:26:49,292 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:49,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 06:26:49,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:49,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 06:26:49,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 06:26:49,293 INFO L87 Difference]: Start difference. First operand 1623 states and 2637 transitions. Second operand has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-14 06:26:51,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:26:51,596 INFO L93 Difference]: Finished difference Result 4437 states and 7207 transitions. [2022-12-14 06:26:51,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-12-14 06:26:51,597 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) Word has length 102 [2022-12-14 06:26:51,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:26:51,612 INFO L225 Difference]: With dead ends: 4437 [2022-12-14 06:26:51,612 INFO L226 Difference]: Without dead ends: 2837 [2022-12-14 06:26:51,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-12-14 06:26:51,620 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1368 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 4475 mSolverCounterSat, 708 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1444 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 5183 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 708 IncrementalHoareTripleChecker+Valid, 4475 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 06:26:51,621 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1444 Valid, 2161 Invalid, 5183 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [708 Valid, 4475 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 06:26:51,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2837 states. [2022-12-14 06:26:51,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2837 to 2642. [2022-12-14 06:26:51,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2642 states, 1818 states have (on average 1.5792079207920793) internal successors, (2871), 1917 states have internal predecessors, (2871), 672 states have call successors, (672), 131 states have call predecessors, (672), 151 states have return successors, (719), 637 states have call predecessors, (719), 667 states have call successors, (719) [2022-12-14 06:26:51,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2642 states to 2642 states and 4262 transitions. [2022-12-14 06:26:51,735 INFO L78 Accepts]: Start accepts. Automaton has 2642 states and 4262 transitions. Word has length 102 [2022-12-14 06:26:51,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:26:51,736 INFO L495 AbstractCegarLoop]: Abstraction has 2642 states and 4262 transitions. [2022-12-14 06:26:51,736 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.714285714285714) internal successors, (54), 7 states have internal predecessors, (54), 5 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (19), 5 states have call predecessors, (19), 4 states have call successors, (19) [2022-12-14 06:26:51,736 INFO L276 IsEmpty]: Start isEmpty. Operand 2642 states and 4262 transitions. [2022-12-14 06:26:51,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-12-14 06:26:51,738 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:51,738 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1] [2022-12-14 06:26:51,738 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 06:26:51,738 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:51,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:51,739 INFO L85 PathProgramCache]: Analyzing trace with hash 1948153399, now seen corresponding path program 1 times [2022-12-14 06:26:51,739 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:51,739 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [105446579] [2022-12-14 06:26:51,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:51,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:51,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:51,974 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:26:51,974 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:51,974 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [105446579] [2022-12-14 06:26:51,974 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [105446579] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:51,974 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:26:51,975 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 06:26:51,975 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [219481804] [2022-12-14 06:26:51,975 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:51,975 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 06:26:51,975 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:51,976 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 06:26:51,976 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 06:26:51,976 INFO L87 Difference]: Start difference. First operand 2642 states and 4262 transitions. Second operand has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 06:26:52,569 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:26:52,569 INFO L93 Difference]: Finished difference Result 2743 states and 4428 transitions. [2022-12-14 06:26:52,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 06:26:52,570 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 103 [2022-12-14 06:26:52,570 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:26:52,582 INFO L225 Difference]: With dead ends: 2743 [2022-12-14 06:26:52,582 INFO L226 Difference]: Without dead ends: 2728 [2022-12-14 06:26:52,583 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 [2022-12-14 06:26:52,584 INFO L413 NwaCegarLoop]: 569 mSDtfsCounter, 698 mSDsluCounter, 1303 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 699 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 583 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 06:26:52,584 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [699 Valid, 1872 Invalid, 583 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 06:26:52,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2728 states. [2022-12-14 06:26:52,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2728 to 2648. [2022-12-14 06:26:52,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2648 states, 1824 states have (on average 1.5773026315789473) internal successors, (2877), 1923 states have internal predecessors, (2877), 672 states have call successors, (672), 131 states have call predecessors, (672), 151 states have return successors, (719), 637 states have call predecessors, (719), 667 states have call successors, (719) [2022-12-14 06:26:52,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2648 states to 2648 states and 4268 transitions. [2022-12-14 06:26:52,698 INFO L78 Accepts]: Start accepts. Automaton has 2648 states and 4268 transitions. Word has length 103 [2022-12-14 06:26:52,699 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:26:52,699 INFO L495 AbstractCegarLoop]: Abstraction has 2648 states and 4268 transitions. [2022-12-14 06:26:52,699 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 9.166666666666666) internal successors, (55), 6 states have internal predecessors, (55), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-12-14 06:26:52,699 INFO L276 IsEmpty]: Start isEmpty. Operand 2648 states and 4268 transitions. [2022-12-14 06:26:52,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-12-14 06:26:52,701 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:52,701 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:26:52,701 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 06:26:52,701 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:52,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:52,701 INFO L85 PathProgramCache]: Analyzing trace with hash -204842985, now seen corresponding path program 1 times [2022-12-14 06:26:52,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:52,702 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889577943] [2022-12-14 06:26:52,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:52,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:52,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:53,042 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:26:53,042 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:53,042 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889577943] [2022-12-14 06:26:53,042 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889577943] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:53,042 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:26:53,043 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-12-14 06:26:53,043 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1846206806] [2022-12-14 06:26:53,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:53,043 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-12-14 06:26:53,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:53,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-12-14 06:26:53,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-12-14 06:26:53,044 INFO L87 Difference]: Start difference. First operand 2648 states and 4268 transitions. Second operand has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 06:26:56,403 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:26:56,403 INFO L93 Difference]: Finished difference Result 3073 states and 4910 transitions. [2022-12-14 06:26:56,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-12-14 06:26:56,404 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 108 [2022-12-14 06:26:56,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:26:56,413 INFO L225 Difference]: With dead ends: 3073 [2022-12-14 06:26:56,413 INFO L226 Difference]: Without dead ends: 3056 [2022-12-14 06:26:56,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-12-14 06:26:56,415 INFO L413 NwaCegarLoop]: 553 mSDtfsCounter, 2666 mSDsluCounter, 3393 mSDsCounter, 0 mSdLazyCounter, 8795 mSolverCounterSat, 1578 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2692 SdHoareTripleChecker+Valid, 3946 SdHoareTripleChecker+Invalid, 10373 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1578 IncrementalHoareTripleChecker+Valid, 8795 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.8s IncrementalHoareTripleChecker+Time [2022-12-14 06:26:56,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2692 Valid, 3946 Invalid, 10373 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1578 Valid, 8795 Invalid, 0 Unknown, 0 Unchecked, 2.8s Time] [2022-12-14 06:26:56,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3056 states. [2022-12-14 06:26:56,539 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3056 to 2836. [2022-12-14 06:26:56,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2836 states, 1966 states have (on average 1.5768056968463886) internal successors, (3100), 2063 states have internal predecessors, (3100), 689 states have call successors, (689), 161 states have call predecessors, (689), 180 states have return successors, (740), 655 states have call predecessors, (740), 684 states have call successors, (740) [2022-12-14 06:26:56,551 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2836 states to 2836 states and 4529 transitions. [2022-12-14 06:26:56,551 INFO L78 Accepts]: Start accepts. Automaton has 2836 states and 4529 transitions. Word has length 108 [2022-12-14 06:26:56,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:26:56,552 INFO L495 AbstractCegarLoop]: Abstraction has 2836 states and 4529 transitions. [2022-12-14 06:26:56,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.2727272727272725) internal successors, (58), 11 states have internal predecessors, (58), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-12-14 06:26:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 2836 states and 4529 transitions. [2022-12-14 06:26:56,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-12-14 06:26:56,554 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:26:56,554 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:26:56,554 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-12-14 06:26:56,554 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:26:56,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:26:56,555 INFO L85 PathProgramCache]: Analyzing trace with hash 2107873915, now seen corresponding path program 1 times [2022-12-14 06:26:56,555 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:26:56,555 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [220356535] [2022-12-14 06:26:56,555 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:56,555 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:26:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:58,142 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-12-14 06:26:58,142 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:26:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [220356535] [2022-12-14 06:26:58,143 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [220356535] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:26:58,143 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [777198053] [2022-12-14 06:26:58,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:26:58,143 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:26:58,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:26:58,144 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:26:58,145 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 06:26:58,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:26:58,435 INFO L263 TraceCheckSpWp]: Trace formula consists of 2087 conjuncts, 96 conjunts are in the unsatisfiable core [2022-12-14 06:26:58,447 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:26:59,033 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:26:59,034 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 06:26:59,034 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [777198053] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:26:59,034 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 06:26:59,034 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [19] total 27 [2022-12-14 06:26:59,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059689242] [2022-12-14 06:26:59,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:26:59,035 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-14 06:26:59,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:26:59,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-14 06:26:59,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=89, Invalid=613, Unknown=0, NotChecked=0, Total=702 [2022-12-14 06:26:59,036 INFO L87 Difference]: Start difference. First operand 2836 states and 4529 transitions. Second operand has 12 states, 8 states have (on average 7.75) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 06:27:00,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:27:00,933 INFO L93 Difference]: Finished difference Result 5670 states and 9137 transitions. [2022-12-14 06:27:00,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-14 06:27:00,934 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 7.75) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) Word has length 115 [2022-12-14 06:27:00,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:27:00,943 INFO L225 Difference]: With dead ends: 5670 [2022-12-14 06:27:00,944 INFO L226 Difference]: Without dead ends: 2861 [2022-12-14 06:27:00,951 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 118 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 235 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=162, Invalid=1098, Unknown=0, NotChecked=0, Total=1260 [2022-12-14 06:27:00,952 INFO L413 NwaCegarLoop]: 107 mSDtfsCounter, 780 mSDsluCounter, 644 mSDsCounter, 0 mSdLazyCounter, 4618 mSolverCounterSat, 397 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 780 SdHoareTripleChecker+Valid, 751 SdHoareTripleChecker+Invalid, 5015 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 397 IncrementalHoareTripleChecker+Valid, 4618 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.6s IncrementalHoareTripleChecker+Time [2022-12-14 06:27:00,952 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [780 Valid, 751 Invalid, 5015 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [397 Valid, 4618 Invalid, 0 Unknown, 0 Unchecked, 1.6s Time] [2022-12-14 06:27:00,954 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2022-12-14 06:27:01,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2784. [2022-12-14 06:27:01,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2784 states, 1932 states have (on average 1.568840579710145) internal successors, (3031), 2028 states have internal predecessors, (3031), 671 states have call successors, (671), 161 states have call predecessors, (671), 180 states have return successors, (723), 638 states have call predecessors, (723), 667 states have call successors, (723) [2022-12-14 06:27:01,100 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2784 states to 2784 states and 4425 transitions. [2022-12-14 06:27:01,100 INFO L78 Accepts]: Start accepts. Automaton has 2784 states and 4425 transitions. Word has length 115 [2022-12-14 06:27:01,101 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:27:01,101 INFO L495 AbstractCegarLoop]: Abstraction has 2784 states and 4425 transitions. [2022-12-14 06:27:01,101 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 7.75) internal successors, (62), 10 states have internal predecessors, (62), 6 states have call successors, (22), 3 states have call predecessors, (22), 4 states have return successors, (21), 5 states have call predecessors, (21), 5 states have call successors, (21) [2022-12-14 06:27:01,101 INFO L276 IsEmpty]: Start isEmpty. Operand 2784 states and 4425 transitions. [2022-12-14 06:27:01,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-12-14 06:27:01,103 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:27:01,103 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:27:01,111 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 06:27:01,304 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-12-14 06:27:01,304 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:27:01,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:27:01,304 INFO L85 PathProgramCache]: Analyzing trace with hash 919295433, now seen corresponding path program 1 times [2022-12-14 06:27:01,304 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:27:01,304 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104682405] [2022-12-14 06:27:01,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:01,305 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:27:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:02,395 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:27:02,395 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:27:02,395 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104682405] [2022-12-14 06:27:02,395 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104682405] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:27:02,395 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:27:02,395 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2022-12-14 06:27:02,396 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [515306346] [2022-12-14 06:27:02,396 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:27:02,396 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2022-12-14 06:27:02,396 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:27:02,397 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2022-12-14 06:27:02,397 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2022-12-14 06:27:02,397 INFO L87 Difference]: Start difference. First operand 2784 states and 4425 transitions. Second operand has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-14 06:27:12,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:27:12,427 INFO L93 Difference]: Finished difference Result 9606 states and 15353 transitions. [2022-12-14 06:27:12,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 84 states. [2022-12-14 06:27:12,427 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) Word has length 116 [2022-12-14 06:27:12,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:27:12,443 INFO L225 Difference]: With dead ends: 9606 [2022-12-14 06:27:12,443 INFO L226 Difference]: Without dead ends: 4367 [2022-12-14 06:27:12,457 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 90 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2695 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=1188, Invalid=7184, Unknown=0, NotChecked=0, Total=8372 [2022-12-14 06:27:12,458 INFO L413 NwaCegarLoop]: 475 mSDtfsCounter, 4408 mSDsluCounter, 3370 mSDsCounter, 0 mSdLazyCounter, 21298 mSolverCounterSat, 3329 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 7.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4527 SdHoareTripleChecker+Valid, 3845 SdHoareTripleChecker+Invalid, 24627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 3329 IncrementalHoareTripleChecker+Valid, 21298 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 8.5s IncrementalHoareTripleChecker+Time [2022-12-14 06:27:12,458 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4527 Valid, 3845 Invalid, 24627 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [3329 Valid, 21298 Invalid, 0 Unknown, 0 Unchecked, 8.5s Time] [2022-12-14 06:27:12,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4367 states. [2022-12-14 06:27:12,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4367 to 4099. [2022-12-14 06:27:12,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4099 states, 2867 states have (on average 1.5563306592256714) internal successors, (4462), 2990 states have internal predecessors, (4462), 968 states have call successors, (968), 237 states have call predecessors, (968), 263 states have return successors, (1088), 926 states have call predecessors, (1088), 964 states have call successors, (1088) [2022-12-14 06:27:12,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4099 states to 4099 states and 6518 transitions. [2022-12-14 06:27:12,724 INFO L78 Accepts]: Start accepts. Automaton has 4099 states and 6518 transitions. Word has length 116 [2022-12-14 06:27:12,724 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:27:12,724 INFO L495 AbstractCegarLoop]: Abstraction has 4099 states and 6518 transitions. [2022-12-14 06:27:12,724 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 15 states have (on average 4.333333333333333) internal successors, (65), 15 states have internal predecessors, (65), 9 states have call successors, (22), 5 states have call predecessors, (22), 8 states have return successors, (21), 11 states have call predecessors, (21), 8 states have call successors, (21) [2022-12-14 06:27:12,725 INFO L276 IsEmpty]: Start isEmpty. Operand 4099 states and 6518 transitions. [2022-12-14 06:27:12,727 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-12-14 06:27:12,727 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:27:12,727 INFO L195 NwaCegarLoop]: 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 06:27:12,727 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-12-14 06:27:12,727 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:27:12,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:27:12,728 INFO L85 PathProgramCache]: Analyzing trace with hash 503159843, now seen corresponding path program 1 times [2022-12-14 06:27:12,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:27:12,728 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1006624490] [2022-12-14 06:27:12,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:12,728 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:27:12,756 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:12,958 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-12-14 06:27:12,958 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:27:12,958 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1006624490] [2022-12-14 06:27:12,958 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1006624490] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:27:12,959 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 06:27:12,959 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 06:27:12,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [116486639] [2022-12-14 06:27:12,959 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:27:12,959 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 06:27:12,960 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:27:12,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 06:27:12,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 06:27:12,961 INFO L87 Difference]: Start difference. First operand 4099 states and 6518 transitions. Second operand has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 06:27:14,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 06:27:14,656 INFO L93 Difference]: Finished difference Result 11462 states and 18561 transitions. [2022-12-14 06:27:14,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 06:27:14,657 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) Word has length 117 [2022-12-14 06:27:14,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 06:27:14,680 INFO L225 Difference]: With dead ends: 11462 [2022-12-14 06:27:14,680 INFO L226 Difference]: Without dead ends: 7404 [2022-12-14 06:27:14,691 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2022-12-14 06:27:14,692 INFO L413 NwaCegarLoop]: 386 mSDtfsCounter, 1318 mSDsluCounter, 610 mSDsCounter, 0 mSdLazyCounter, 1912 mSolverCounterSat, 499 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1379 SdHoareTripleChecker+Valid, 996 SdHoareTripleChecker+Invalid, 2411 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 499 IncrementalHoareTripleChecker+Valid, 1912 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-12-14 06:27:14,692 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1379 Valid, 996 Invalid, 2411 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [499 Valid, 1912 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-12-14 06:27:14,697 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7404 states. [2022-12-14 06:27:15,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7404 to 6829. [2022-12-14 06:27:15,096 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6829 states, 4827 states have (on average 1.5574891236793038) internal successors, (7518), 5036 states have internal predecessors, (7518), 1555 states have call successors, (1555), 395 states have call predecessors, (1555), 446 states have return successors, (1843), 1477 states have call predecessors, (1843), 1551 states have call successors, (1843) [2022-12-14 06:27:15,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6829 states to 6829 states and 10916 transitions. [2022-12-14 06:27:15,120 INFO L78 Accepts]: Start accepts. Automaton has 6829 states and 10916 transitions. Word has length 117 [2022-12-14 06:27:15,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 06:27:15,121 INFO L495 AbstractCegarLoop]: Abstraction has 6829 states and 10916 transitions. [2022-12-14 06:27:15,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.8) internal successors, (64), 5 states have internal predecessors, (64), 4 states have call successors, (22), 3 states have call predecessors, (22), 3 states have return successors, (21), 4 states have call predecessors, (21), 3 states have call successors, (21) [2022-12-14 06:27:15,121 INFO L276 IsEmpty]: Start isEmpty. Operand 6829 states and 10916 transitions. [2022-12-14 06:27:15,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-12-14 06:27:15,124 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 06:27:15,124 INFO L195 NwaCegarLoop]: trace histogram [4, 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] [2022-12-14 06:27:15,124 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 06:27:15,124 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 06:27:15,124 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 06:27:15,124 INFO L85 PathProgramCache]: Analyzing trace with hash -84848623, now seen corresponding path program 1 times [2022-12-14 06:27:15,124 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 06:27:15,124 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1017686830] [2022-12-14 06:27:15,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:15,125 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 06:27:15,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:18,242 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 7 proven. 6 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 06:27:18,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 06:27:18,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1017686830] [2022-12-14 06:27:18,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1017686830] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 06:27:18,243 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1231973412] [2022-12-14 06:27:18,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 06:27:18,243 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 06:27:18,243 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 06:27:18,244 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 06:27:18,245 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cc4a276-8c11-429d-ab3d-a44314a1058b/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 06:27:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 06:27:18,525 INFO L263 TraceCheckSpWp]: Trace formula consists of 2106 conjuncts, 163 conjunts are in the unsatisfiable core [2022-12-14 06:27:18,533 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 06:27:20,241 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 8 proven. 5 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-12-14 06:27:20,241 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 06:29:08,696 WARN L233 SmtUtils]: Spent 1.69m on a formula simplification. DAG size of input: 2893 DAG size of output: 113 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:30:56,092 WARN L233 SmtUtils]: Spent 1.77m on a formula simplification. DAG size of input: 2893 DAG size of output: 113 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:31:24,336 WARN L233 SmtUtils]: Spent 26.38s on a formula simplification. DAG size of input: 1458 DAG size of output: 68 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:31:52,223 WARN L233 SmtUtils]: Spent 27.29s on a formula simplification. DAG size of input: 1458 DAG size of output: 68 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:31:53,464 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-12-14 06:31:53,465 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1231973412] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 06:31:53,465 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [824956033] [2022-12-14 06:31:53,481 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 06:31:53,481 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 06:31:53,483 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 06:31:53,487 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 06:31:53,487 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 06:31:58,569 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 594 for LOIs [2022-12-14 06:33:27,707 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 594 for LOIs [2022-12-14 06:33:32,248 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-12-14 06:33:40,225 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 453 for LOIs [2022-12-14 06:33:42,253 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 509 for LOIs [2022-12-14 06:33:44,320 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 57 for LOIs [2022-12-14 06:33:44,332 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 445 for LOIs [2022-12-14 06:33:44,405 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 50 for LOIs [2022-12-14 06:33:44,409 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 599 for LOIs [2022-12-14 06:33:47,906 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 450 for LOIs [2022-12-14 06:33:48,170 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 459 for LOIs [2022-12-14 06:33:49,079 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2022-12-14 06:33:49,154 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 562 for LOIs [2022-12-14 06:33:51,716 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 841 for LOIs [2022-12-14 06:34:10,679 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 668 for LOIs [2022-12-14 06:34:11,170 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 06:34:24,066 WARN L233 SmtUtils]: Spent 6.86s on a formula simplification. DAG size of input: 668 DAG size of output: 527 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:34:32,244 WARN L233 SmtUtils]: Spent 7.33s on a formula simplification. DAG size of input: 708 DAG size of output: 541 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:34:52,377 WARN L233 SmtUtils]: Spent 8.57s on a formula simplification. DAG size of input: 841 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:35:07,966 WARN L233 SmtUtils]: Spent 13.17s on a formula simplification. DAG size of input: 940 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:37:29,330 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 526 DAG size of output: 468 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:37:36,659 WARN L233 SmtUtils]: Spent 6.26s on a formula simplification. DAG size of input: 528 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:37:43,449 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 531 DAG size of output: 482 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:37:51,187 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 450 DAG size of output: 433 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:38:04,355 WARN L233 SmtUtils]: Spent 6.16s on a formula simplification. DAG size of input: 540 DAG size of output: 475 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:38:12,161 WARN L233 SmtUtils]: Spent 6.60s on a formula simplification. DAG size of input: 540 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:38:43,008 WARN L233 SmtUtils]: Spent 7.32s on a formula simplification. DAG size of input: 555 DAG size of output: 507 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:38:50,987 WARN L233 SmtUtils]: Spent 6.64s on a formula simplification. DAG size of input: 558 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:38:58,962 WARN L233 SmtUtils]: Spent 6.61s on a formula simplification. DAG size of input: 564 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:39:08,584 WARN L233 SmtUtils]: Spent 8.21s on a formula simplification. DAG size of input: 580 DAG size of output: 510 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:39:08,587 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [824956033] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 06:39:08,587 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-12-14 06:39:08,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [77] imperfect sequences [39, 23, 29] total 164 [2022-12-14 06:39:08,588 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770182028] [2022-12-14 06:39:08,588 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 06:39:08,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 78 states [2022-12-14 06:39:08,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 06:39:08,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 78 interpolants. [2022-12-14 06:39:08,592 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1441, Invalid=25291, Unknown=0, NotChecked=0, Total=26732 [2022-12-14 06:39:08,593 INFO L87 Difference]: Start difference. First operand 6829 states and 10916 transitions. Second operand has 78 states, 60 states have (on average 1.1) internal successors, (66), 51 states have internal predecessors, (66), 22 states have call successors, (23), 15 states have call predecessors, (23), 15 states have return successors, (22), 22 states have call predecessors, (22), 21 states have call successors, (22) [2022-12-14 06:39:14,876 WARN L233 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 648 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:39:20,435 WARN L233 SmtUtils]: Spent 5.02s on a formula simplification. DAG size of input: 660 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:39:26,518 WARN L233 SmtUtils]: Spent 5.30s on a formula simplification. DAG size of input: 611 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 06:39:50,164 WARN L233 SmtUtils]: Spent 7.88s on a formula simplification. DAG size of input: 809 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)