./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.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_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/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_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/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_7764a636-1014-4952-a160-2b21496a699d/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 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d --- 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 05:51:39,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-14 05:51:39,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-14 05:51:39,929 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-14 05:51:39,929 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-14 05:51:39,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-14 05:51:39,931 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-14 05:51:39,932 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-14 05:51:39,933 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-14 05:51:39,933 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-14 05:51:39,934 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-14 05:51:39,935 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-14 05:51:39,935 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-14 05:51:39,936 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-14 05:51:39,936 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-14 05:51:39,937 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-14 05:51:39,938 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-14 05:51:39,938 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-14 05:51:39,939 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-14 05:51:39,940 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-14 05:51:39,941 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-14 05:51:39,942 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-14 05:51:39,943 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-14 05:51:39,944 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-14 05:51:39,945 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-14 05:51:39,946 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-14 05:51:39,946 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-14 05:51:39,946 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-14 05:51:39,947 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-14 05:51:39,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-14 05:51:39,948 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-14 05:51:39,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-14 05:51:39,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-14 05:51:39,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-14 05:51:39,950 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-14 05:51:39,950 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-14 05:51:39,950 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-14 05:51:39,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-14 05:51:39,951 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-14 05:51:39,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-14 05:51:39,952 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-14 05:51:39,952 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-12-14 05:51:39,966 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-14 05:51:39,967 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-14 05:51:39,967 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-14 05:51:39,967 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-14 05:51:39,968 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-14 05:51:39,968 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-14 05:51:39,968 INFO L138 SettingsManager]: * User list type=DISABLED [2022-12-14 05:51:39,968 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-12-14 05:51:39,968 INFO L138 SettingsManager]: * Explicit value domain=true [2022-12-14 05:51:39,969 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-12-14 05:51:39,969 INFO L138 SettingsManager]: * Octagon Domain=false [2022-12-14 05:51:39,969 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-12-14 05:51:39,969 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-12-14 05:51:39,969 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-12-14 05:51:39,970 INFO L138 SettingsManager]: * Interval Domain=false [2022-12-14 05:51:39,970 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-12-14 05:51:39,970 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-12-14 05:51:39,970 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-12-14 05:51:39,971 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-12-14 05:51:39,971 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-12-14 05:51:39,972 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-14 05:51:39,972 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:51:39,973 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-12-14 05:51:39,973 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-14 05:51:39,974 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-12-14 05:51:39,974 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-12-14 05:51:39,974 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_7764a636-1014-4952-a160-2b21496a699d/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 329a2716e4212f7d84877599b73bf84d73c2c4b19cd8d5bf0b2cb6bd49bef38d [2022-12-14 05:51:40,135 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-14 05:51:40,151 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-14 05:51:40,153 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-14 05:51:40,154 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-14 05:51:40,154 INFO L275 PluginConnector]: CDTParser initialized [2022-12-14 05:51:40,155 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/../../sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2022-12-14 05:51:42,667 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-14 05:51:42,943 INFO L351 CDTParser]: Found 1 translation units. [2022-12-14 05:51:42,944 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c [2022-12-14 05:51:42,961 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/data/1c7cc068d/763c57619af14c0d97d240e28fd4f549/FLAGb8e82dc7f [2022-12-14 05:51:43,225 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/data/1c7cc068d/763c57619af14c0d97d240e28fd4f549 [2022-12-14 05:51:43,227 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-14 05:51:43,228 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-14 05:51:43,228 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-14 05:51:43,229 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-14 05:51:43,232 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-14 05:51:43,232 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f879571 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43, skipping insertion in model container [2022-12-14 05:51:43,234 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,240 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-14 05:51:43,281 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-14 05:51:43,574 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_7764a636-1014-4952-a160-2b21496a699d/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2022-12-14 05:51:43,612 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:51:43,621 INFO L203 MainTranslator]: Completed pre-run [2022-12-14 05:51:43,671 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_7764a636-1014-4952-a160-2b21496a699d/sv-benchmarks/c/product-lines/elevator_spec1_product19.cil.c[61467,61480] [2022-12-14 05:51:43,682 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-14 05:51:43,698 INFO L208 MainTranslator]: Completed translation [2022-12-14 05:51:43,698 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43 WrapperNode [2022-12-14 05:51:43,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-14 05:51:43,699 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-14 05:51:43,699 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-14 05:51:43,700 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-14 05:51:43,705 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,722 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,756 INFO L138 Inliner]: procedures = 94, calls = 341, calls flagged for inlining = 25, calls inlined = 22, statements flattened = 1108 [2022-12-14 05:51:43,757 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-14 05:51:43,757 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-14 05:51:43,757 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-14 05:51:43,757 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-14 05:51:43,771 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,771 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,775 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,775 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,795 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,806 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,809 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,814 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-14 05:51:43,815 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-14 05:51:43,815 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-14 05:51:43,815 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-14 05:51:43,816 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (1/1) ... [2022-12-14 05:51:43,821 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-14 05:51:43,831 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:43,842 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-14 05:51:43,844 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-14 05:51:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-12-14 05:51:43,873 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-12-14 05:51:43,873 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-14 05:51:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-12-14 05:51:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-12-14 05:51:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-12-14 05:51:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-12-14 05:51:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 05:51:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__weight [2022-12-14 05:51:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-12-14 05:51:43,874 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-12-14 05:51:43,874 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-12-14 05:51:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-12-14 05:51:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-12-14 05:51:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-12-14 05:51:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-12-14 05:51:43,875 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-12-14 05:51:43,875 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-12-14 05:51:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-12-14 05:51:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-12-14 05:51:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-12-14 05:51:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-12-14 05:51:43,876 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-12-14 05:51:43,876 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-12-14 05:51:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-12-14 05:51:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-12-14 05:51:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-12-14 05:51:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-12-14 05:51:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-12-14 05:51:43,877 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-12-14 05:51:43,877 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-12-14 05:51:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-12-14 05:51:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-12-14 05:51:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-12-14 05:51:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-12-14 05:51:43,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-12-14 05:51:43,878 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-12-14 05:51:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-12-14 05:51:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-12-14 05:51:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-12-14 05:51:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-12-14 05:51:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-12-14 05:51:43,879 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-12-14 05:51:43,879 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-12-14 05:51:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-12-14 05:51:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-14 05:51:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-14 05:51:43,880 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-12-14 05:51:43,880 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-12-14 05:51:44,001 INFO L235 CfgBuilder]: Building ICFG [2022-12-14 05:51:44,003 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-14 05:51:44,767 INFO L276 CfgBuilder]: Performing block encoding [2022-12-14 05:51:45,371 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-14 05:51:45,371 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-12-14 05:51:45,374 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:51:45 BoogieIcfgContainer [2022-12-14 05:51:45,374 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-14 05:51:45,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-14 05:51:45,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-14 05:51:45,379 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-14 05:51:45,379 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.12 05:51:43" (1/3) ... [2022-12-14 05:51:45,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:51:45, skipping insertion in model container [2022-12-14 05:51:45,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.12 05:51:43" (2/3) ... [2022-12-14 05:51:45,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1a66e1f9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.12 05:51:45, skipping insertion in model container [2022-12-14 05:51:45,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.12 05:51:45" (3/3) ... [2022-12-14 05:51:45,382 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product19.cil.c [2022-12-14 05:51:45,399 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-14 05:51:45,399 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-12-14 05:51:45,450 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-14 05:51:45,455 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;@5387ba11, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-12-14 05:51:45,456 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-12-14 05:51:45,461 INFO L276 IsEmpty]: Start isEmpty. Operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) [2022-12-14 05:51:45,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-12-14 05:51:45,479 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:45,480 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] [2022-12-14 05:51:45,481 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:45,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:45,486 INFO L85 PathProgramCache]: Analyzing trace with hash 933813770, now seen corresponding path program 1 times [2022-12-14 05:51:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:45,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966125259] [2022-12-14 05:51:45,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:45,494 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:45,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:45,903 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 05:51:45,903 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:45,903 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1966125259] [2022-12-14 05:51:45,904 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1966125259] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:45,904 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:45,904 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-12-14 05:51:45,905 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1356715409] [2022-12-14 05:51:45,906 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:45,910 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-12-14 05:51:45,910 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:45,936 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-12-14 05:51:45,937 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:51:45,940 INFO L87 Difference]: Start difference. First operand has 381 states, 255 states have (on average 1.588235294117647) internal successors, (405), 276 states have internal predecessors, (405), 99 states have call successors, (99), 25 states have call predecessors, (99), 25 states have return successors, (99), 93 states have call predecessors, (99), 99 states have call successors, (99) Second operand has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-14 05:51:46,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:46,068 INFO L93 Difference]: Finished difference Result 399 states and 630 transitions. [2022-12-14 05:51:46,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-12-14 05:51:46,071 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) Word has length 88 [2022-12-14 05:51:46,072 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:46,085 INFO L225 Difference]: With dead ends: 399 [2022-12-14 05:51:46,085 INFO L226 Difference]: Without dead ends: 377 [2022-12-14 05:51:46,089 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-12-14 05:51:46,091 INFO L413 NwaCegarLoop]: 560 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:46,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 560 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:51:46,105 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 377 states. [2022-12-14 05:51:46,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 377 to 377. [2022-12-14 05:51:46,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 377 states, 253 states have (on average 1.5770750988142292) internal successors, (399), 272 states have internal predecessors, (399), 99 states have call successors, (99), 25 states have call predecessors, (99), 24 states have return successors, (94), 92 states have call predecessors, (94), 94 states have call successors, (94) [2022-12-14 05:51:46,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 377 states to 377 states and 592 transitions. [2022-12-14 05:51:46,148 INFO L78 Accepts]: Start accepts. Automaton has 377 states and 592 transitions. Word has length 88 [2022-12-14 05:51:46,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:46,149 INFO L495 AbstractCegarLoop]: Abstraction has 377 states and 592 transitions. [2022-12-14 05:51:46,150 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 23.0) internal successors, (46), 2 states have internal predecessors, (46), 2 states have call successors, (17), 2 states have call predecessors, (17), 2 states have return successors, (16), 2 states have call predecessors, (16), 1 states have call successors, (16) [2022-12-14 05:51:46,150 INFO L276 IsEmpty]: Start isEmpty. Operand 377 states and 592 transitions. [2022-12-14 05:51:46,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-12-14 05:51:46,154 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:46,154 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] [2022-12-14 05:51:46,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-12-14 05:51:46,155 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:46,156 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:46,156 INFO L85 PathProgramCache]: Analyzing trace with hash 1576309399, now seen corresponding path program 1 times [2022-12-14 05:51:46,156 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:46,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279154075] [2022-12-14 05:51:46,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:46,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:46,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:46,542 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 05:51:46,543 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:46,543 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279154075] [2022-12-14 05:51:46,543 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279154075] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:46,543 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:46,543 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-14 05:51:46,544 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1585556865] [2022-12-14 05:51:46,544 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:46,545 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-12-14 05:51:46,545 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:46,545 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-12-14 05:51:46,546 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-12-14 05:51:46,546 INFO L87 Difference]: Start difference. First operand 377 states and 592 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:51:48,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:48,177 INFO L93 Difference]: Finished difference Result 1148 states and 1837 transitions. [2022-12-14 05:51:48,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-12-14 05:51:48,177 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 89 [2022-12-14 05:51:48,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:48,182 INFO L225 Difference]: With dead ends: 1148 [2022-12-14 05:51:48,183 INFO L226 Difference]: Without dead ends: 794 [2022-12-14 05:51:48,186 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-12-14 05:51:48,187 INFO L413 NwaCegarLoop]: 375 mSDtfsCounter, 1153 mSDsluCounter, 1233 mSDsCounter, 0 mSdLazyCounter, 2523 mSolverCounterSat, 433 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1230 SdHoareTripleChecker+Valid, 1608 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 433 IncrementalHoareTripleChecker+Valid, 2523 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:48,188 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1230 Valid, 1608 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [433 Valid, 2523 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:51:48,189 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 794 states. [2022-12-14 05:51:48,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 794 to 745. [2022-12-14 05:51:48,230 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 745 states, 510 states have (on average 1.592156862745098) internal successors, (812), 543 states have internal predecessors, (812), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-12-14 05:51:48,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 745 states to 745 states and 1191 transitions. [2022-12-14 05:51:48,234 INFO L78 Accepts]: Start accepts. Automaton has 745 states and 1191 transitions. Word has length 89 [2022-12-14 05:51:48,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:48,234 INFO L495 AbstractCegarLoop]: Abstraction has 745 states and 1191 transitions. [2022-12-14 05:51:48,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-12-14 05:51:48,235 INFO L276 IsEmpty]: Start isEmpty. Operand 745 states and 1191 transitions. [2022-12-14 05:51:48,237 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-12-14 05:51:48,237 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:48,237 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] [2022-12-14 05:51:48,237 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-12-14 05:51:48,237 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:48,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:48,238 INFO L85 PathProgramCache]: Analyzing trace with hash 1425829328, now seen corresponding path program 1 times [2022-12-14 05:51:48,238 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:48,238 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1538028336] [2022-12-14 05:51:48,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:48,238 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:48,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:48,535 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 05:51:48,535 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:48,535 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1538028336] [2022-12-14 05:51:48,535 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1538028336] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:48,536 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:48,536 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-12-14 05:51:48,536 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [253122305] [2022-12-14 05:51:48,536 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:48,536 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-12-14 05:51:48,537 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:48,537 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-12-14 05:51:48,537 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:51:48,538 INFO L87 Difference]: Start difference. First operand 745 states and 1191 transitions. Second operand has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:51:49,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:49,043 INFO L93 Difference]: Finished difference Result 816 states and 1303 transitions. [2022-12-14 05:51:49,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:51:49,044 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-12-14 05:51:49,044 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:49,048 INFO L225 Difference]: With dead ends: 816 [2022-12-14 05:51:49,048 INFO L226 Difference]: Without dead ends: 801 [2022-12-14 05:51:49,049 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 05:51:49,050 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 685 mSDsluCounter, 1276 mSDsCounter, 0 mSdLazyCounter, 549 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 686 SdHoareTripleChecker+Valid, 1832 SdHoareTripleChecker+Invalid, 571 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 549 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:49,050 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [686 Valid, 1832 Invalid, 571 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 549 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-12-14 05:51:49,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 801 states. [2022-12-14 05:51:49,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 801 to 749. [2022-12-14 05:51:49,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.5875486381322956) internal successors, (816), 547 states have internal predecessors, (816), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-12-14 05:51:49,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1195 transitions. [2022-12-14 05:51:49,090 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1195 transitions. Word has length 93 [2022-12-14 05:51:49,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:49,091 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1195 transitions. [2022-12-14 05:51:49,091 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.166666666666666) internal successors, (49), 6 states have internal predecessors, (49), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-12-14 05:51:49,091 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1195 transitions. [2022-12-14 05:51:49,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-12-14 05:51:49,093 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:49,093 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] [2022-12-14 05:51:49,093 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-12-14 05:51:49,093 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:49,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:49,093 INFO L85 PathProgramCache]: Analyzing trace with hash -1896530730, now seen corresponding path program 1 times [2022-12-14 05:51:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:49,094 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [855474610] [2022-12-14 05:51:49,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:49,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:49,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:49,249 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 05:51:49,250 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:49,250 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [855474610] [2022-12-14 05:51:49,250 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [855474610] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:49,250 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:51:49,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-14 05:51:49,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [530509385] [2022-12-14 05:51:49,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:49,251 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-14 05:51:49,251 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:49,252 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-14 05:51:49,252 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:51:49,252 INFO L87 Difference]: Start difference. First operand 749 states and 1195 transitions. Second operand has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 05:51:49,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:49,409 INFO L93 Difference]: Finished difference Result 768 states and 1219 transitions. [2022-12-14 05:51:49,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-14 05:51:49,410 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) Word has length 98 [2022-12-14 05:51:49,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:49,413 INFO L225 Difference]: With dead ends: 768 [2022-12-14 05:51:49,413 INFO L226 Difference]: Without dead ends: 753 [2022-12-14 05:51:49,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:51:49,415 INFO L413 NwaCegarLoop]: 559 mSDtfsCounter, 30 mSDsluCounter, 1639 mSDsCounter, 0 mSdLazyCounter, 144 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 37 SdHoareTripleChecker+Valid, 2198 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 144 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:49,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [37 Valid, 2198 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 144 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:51:49,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 753 states. [2022-12-14 05:51:49,440 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 753 to 749. [2022-12-14 05:51:49,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 749 states, 514 states have (on average 1.583657587548638) internal successors, (814), 547 states have internal predecessors, (814), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-12-14 05:51:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 749 states to 749 states and 1193 transitions. [2022-12-14 05:51:49,445 INFO L78 Accepts]: Start accepts. Automaton has 749 states and 1193 transitions. Word has length 98 [2022-12-14 05:51:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:49,445 INFO L495 AbstractCegarLoop]: Abstraction has 749 states and 1193 transitions. [2022-12-14 05:51:49,445 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 13.0) internal successors, (52), 4 states have internal predecessors, (52), 2 states have call successors, (19), 2 states have call predecessors, (19), 3 states have return successors, (18), 3 states have call predecessors, (18), 1 states have call successors, (18) [2022-12-14 05:51:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 749 states and 1193 transitions. [2022-12-14 05:51:49,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2022-12-14 05:51:49,447 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:49,447 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] [2022-12-14 05:51:49,447 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-12-14 05:51:49,448 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:49,448 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:49,448 INFO L85 PathProgramCache]: Analyzing trace with hash 971008189, now seen corresponding path program 1 times [2022-12-14 05:51:49,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:49,448 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [18517176] [2022-12-14 05:51:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:49,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:52,818 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 4 proven. 5 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2022-12-14 05:51:52,818 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:52,818 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [18517176] [2022-12-14 05:51:52,819 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [18517176] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:51:52,819 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1006810279] [2022-12-14 05:51:52,819 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:52,819 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:52,819 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:52,820 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:51:52,821 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-12-14 05:51:53,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:53,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 1852 conjuncts, 10 conjunts are in the unsatisfiable core [2022-12-14 05:51:53,080 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:51:53,167 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 05:51:53,167 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:51:53,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1006810279] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:51:53,167 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:51:53,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [31] total 33 [2022-12-14 05:51:53,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213432966] [2022-12-14 05:51:53,167 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:51:53,168 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:51:53,168 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:51:53,168 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:51:53,168 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=978, Unknown=0, NotChecked=0, Total=1056 [2022-12-14 05:51:53,169 INFO L87 Difference]: Start difference. First operand 749 states and 1193 transitions. Second operand has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-14 05:51:53,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:51:53,332 INFO L93 Difference]: Finished difference Result 832 states and 1317 transitions. [2022-12-14 05:51:53,332 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:51:53,333 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) Word has length 105 [2022-12-14 05:51:53,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:51:53,337 INFO L225 Difference]: With dead ends: 832 [2022-12-14 05:51:53,337 INFO L226 Difference]: Without dead ends: 817 [2022-12-14 05:51:53,338 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 144 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 207 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=82, Invalid=1040, Unknown=0, NotChecked=0, Total=1122 [2022-12-14 05:51:53,338 INFO L413 NwaCegarLoop]: 594 mSDtfsCounter, 44 mSDsluCounter, 1135 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 1729 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:51:53,338 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 1729 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:51:53,340 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 817 states. [2022-12-14 05:51:53,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 817 to 753. [2022-12-14 05:51:53,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 753 states, 518 states have (on average 1.579150579150579) internal successors, (818), 551 states have internal predecessors, (818), 189 states have call successors, (189), 45 states have call predecessors, (189), 45 states have return successors, (190), 181 states have call predecessors, (190), 184 states have call successors, (190) [2022-12-14 05:51:53,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 753 states to 753 states and 1197 transitions. [2022-12-14 05:51:53,375 INFO L78 Accepts]: Start accepts. Automaton has 753 states and 1197 transitions. Word has length 105 [2022-12-14 05:51:53,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:51:53,376 INFO L495 AbstractCegarLoop]: Abstraction has 753 states and 1197 transitions. [2022-12-14 05:51:53,376 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 14.0) internal successors, (56), 4 states have internal predecessors, (56), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 2 states have call predecessors, (19), 1 states have call successors, (19) [2022-12-14 05:51:53,376 INFO L276 IsEmpty]: Start isEmpty. Operand 753 states and 1197 transitions. [2022-12-14 05:51:53,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2022-12-14 05:51:53,378 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:51:53,378 INFO L195 NwaCegarLoop]: trace histogram [7, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:51:53,387 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-12-14 05:51:53,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:53,579 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:51:53,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:51:53,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1835628898, now seen corresponding path program 1 times [2022-12-14 05:51:53,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:51:53,579 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1742104317] [2022-12-14 05:51:53,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:53,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:51:53,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:54,509 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 05:51:54,510 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:51:54,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1742104317] [2022-12-14 05:51:54,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1742104317] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:51:54,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310375253] [2022-12-14 05:51:54,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:51:54,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:51:54,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:51:54,511 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:51:54,512 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-12-14 05:51:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:51:54,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 1916 conjuncts, 41 conjunts are in the unsatisfiable core [2022-12-14 05:51:54,782 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:51:55,207 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 24 proven. 2 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2022-12-14 05:51:55,208 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:52:22,506 WARN L233 SmtUtils]: Spent 26.03s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:52:46,288 WARN L233 SmtUtils]: Spent 23.34s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 05:52:46,660 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2022-12-14 05:52:46,660 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310375253] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:52:46,661 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [847993043] [2022-12-14 05:52:46,675 INFO L159 IcfgInterpreter]: Started Sifa with 105 locations of interest [2022-12-14 05:52:46,675 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:52:46,678 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:52:46,681 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:52:46,682 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:52:51,935 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 435 for LOIs [2022-12-14 05:52:52,001 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-12-14 05:52:54,500 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 586 for LOIs [2022-12-14 05:53:04,295 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 447 for LOIs [2022-12-14 05:53:06,302 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 501 for LOIs [2022-12-14 05:53:08,389 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 55 for LOIs [2022-12-14 05:53:08,401 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 109 for LOIs [2022-12-14 05:53:08,416 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-12-14 05:53:11,927 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 31 for LOIs [2022-12-14 05:53:11,929 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 455 for LOIs [2022-12-14 05:53:12,832 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 449 for LOIs [2022-12-14 05:53:12,906 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-12-14 05:53:15,503 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-12-14 05:53:23,221 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-12-14 05:53:23,713 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:53:37,215 WARN L233 SmtUtils]: Spent 6.82s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:53:45,569 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:53:51,689 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 675 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:54:10,522 WARN L233 SmtUtils]: Spent 13.09s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:54:22,446 WARN L233 SmtUtils]: Spent 11.08s on a formula simplification. DAG size of input: 901 DAG size of output: 809 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:54:45,187 WARN L233 SmtUtils]: Spent 5.09s on a formula simplification. DAG size of input: 501 DAG size of output: 442 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:56:32,808 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '11884#(and (= 30 (select |#length| 34)) (= (select (select |#memory_int| 23) 0) 32) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= ~floorButtons_3~0 0) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (<= ~currentHeading~0 1) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= 30 (select |#length| 25)) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= (select (select |#memory_int| 6) 0) 91) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= (select |#valid| 27) 1) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= (select (select |#memory_int| 22) 1) 37) (<= ~currentFloorID~0 2147483647) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= ~calls_3~0 0) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= ~calls_0~0 0) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= (select (select |#memory_int| 22) 2) 105) (= 2 (select |#length| 1)) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= ~floorButtons_4~0 0) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= ~calls_1~0 0) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= ~floorButtons_2~0 0) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= ~floorButtons_1~0 0) (= (select |#length| 24) 2) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= ~floorButtons_0~0 0) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= 4 (select |#length| 23)) (= (select (select |#memory_int| 24) 1) 0) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (<= 0 ~currentHeading~0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= (select (select |#memory_int| 15) 0) 32) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= 32 (select (select |#memory_int| 17) 0)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= 30 (select |#length| 28)) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= ~calls_2~0 0) (= ~calls_4~0 0) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 18) 0)) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2022-12-14 05:56:32,808 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:56:32,808 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:56:32,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 34 [2022-12-14 05:56:32,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1264588681] [2022-12-14 05:56:32,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:56:32,810 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2022-12-14 05:56:32,810 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:56:32,811 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2022-12-14 05:56:32,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1154, Invalid=12888, Unknown=0, NotChecked=0, Total=14042 [2022-12-14 05:56:32,815 INFO L87 Difference]: Start difference. First operand 753 states and 1197 transitions. Second operand has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2022-12-14 05:56:48,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:56:48,047 INFO L93 Difference]: Finished difference Result 3926 states and 6333 transitions. [2022-12-14 05:56:48,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 81 states. [2022-12-14 05:56:48,048 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) Word has length 128 [2022-12-14 05:56:48,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:56:48,061 INFO L225 Difference]: With dead ends: 3926 [2022-12-14 05:56:48,062 INFO L226 Difference]: Without dead ends: 3202 [2022-12-14 05:56:48,087 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 496 GetRequests, 300 SyntacticMatches, 4 SemanticMatches, 192 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14151 ImplicationChecksByTransitivity, 193.9s TimeCoverageRelationStatistics Valid=2876, Invalid=34566, Unknown=0, NotChecked=0, Total=37442 [2022-12-14 05:56:48,088 INFO L413 NwaCegarLoop]: 637 mSDtfsCounter, 7042 mSDsluCounter, 9218 mSDsCounter, 0 mSdLazyCounter, 24922 mSolverCounterSat, 4320 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 8.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7090 SdHoareTripleChecker+Valid, 9855 SdHoareTripleChecker+Invalid, 29242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 4320 IncrementalHoareTripleChecker+Valid, 24922 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 10.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:56:48,088 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7090 Valid, 9855 Invalid, 29242 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [4320 Valid, 24922 Invalid, 0 Unknown, 0 Unchecked, 10.0s Time] [2022-12-14 05:56:48,093 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3202 states. [2022-12-14 05:56:48,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3202 to 2668. [2022-12-14 05:56:48,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2668 states, 1876 states have (on average 1.5852878464818763) internal successors, (2974), 1989 states have internal predecessors, (2974), 628 states have call successors, (628), 149 states have call predecessors, (628), 163 states have return successors, (673), 604 states have call predecessors, (673), 623 states have call successors, (673) [2022-12-14 05:56:48,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2668 states to 2668 states and 4275 transitions. [2022-12-14 05:56:48,283 INFO L78 Accepts]: Start accepts. Automaton has 2668 states and 4275 transitions. Word has length 128 [2022-12-14 05:56:48,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:56:48,283 INFO L495 AbstractCegarLoop]: Abstraction has 2668 states and 4275 transitions. [2022-12-14 05:56:48,283 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 24 states have (on average 6.916666666666667) internal successors, (166), 28 states have internal predecessors, (166), 14 states have call successors, (56), 7 states have call predecessors, (56), 20 states have return successors, (58), 20 states have call predecessors, (58), 13 states have call successors, (58) [2022-12-14 05:56:48,283 INFO L276 IsEmpty]: Start isEmpty. Operand 2668 states and 4275 transitions. [2022-12-14 05:56:48,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 05:56:48,288 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:56:48,288 INFO L195 NwaCegarLoop]: trace histogram [6, 5, 4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:56:48,297 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2022-12-14 05:56:48,489 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:56:48,489 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:56:48,490 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:56:48,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1434113397, now seen corresponding path program 1 times [2022-12-14 05:56:48,490 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:56:48,490 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1704653073] [2022-12-14 05:56:48,490 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:56:48,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:56:48,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:56:48,698 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 05:56:48,698 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:56:48,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1704653073] [2022-12-14 05:56:48,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1704653073] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:56:48,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1316876556] [2022-12-14 05:56:48,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:56:48,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:56:48,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:56:48,700 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:56:48,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-12-14 05:56:49,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:56:49,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 2241 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-14 05:56:49,024 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:56:49,188 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 05:56:49,188 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:56:49,388 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2022-12-14 05:56:49,388 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1316876556] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-14 05:56:49,389 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [829074428] [2022-12-14 05:56:49,392 INFO L159 IcfgInterpreter]: Started Sifa with 92 locations of interest [2022-12-14 05:56:49,392 INFO L166 IcfgInterpreter]: Building call graph [2022-12-14 05:56:49,393 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-12-14 05:56:49,393 INFO L176 IcfgInterpreter]: Starting interpretation [2022-12-14 05:56:49,393 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-12-14 05:56:55,294 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 412 for LOIs [2022-12-14 05:56:55,362 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 586 for LOIs [2022-12-14 05:57:08,907 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 695 for LOIs [2022-12-14 05:57:13,334 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 40 for LOIs [2022-12-14 05:57:13,424 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 27 for LOIs [2022-12-14 05:57:13,448 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 54 for LOIs [2022-12-14 05:57:13,461 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 53 for LOIs [2022-12-14 05:57:13,467 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 593 for LOIs [2022-12-14 05:57:17,214 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 27 for LOIs [2022-12-14 05:57:17,216 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 50 for LOIs [2022-12-14 05:57:17,263 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 46 for LOIs [2022-12-14 05:57:17,265 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 556 for LOIs [2022-12-14 05:57:19,811 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 833 for LOIs [2022-12-14 05:57:25,848 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 660 for LOIs [2022-12-14 05:57:26,462 INFO L180 IcfgInterpreter]: Interpretation finished [2022-12-14 05:57:39,972 WARN L233 SmtUtils]: Spent 7.24s on a formula simplification. DAG size of input: 660 DAG size of output: 521 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:57:48,145 WARN L233 SmtUtils]: Spent 7.95s on a formula simplification. DAG size of input: 700 DAG size of output: 535 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:58:11,233 WARN L233 SmtUtils]: Spent 13.20s on a formula simplification. DAG size of input: 833 DAG size of output: 684 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:58:37,615 WARN L233 SmtUtils]: Spent 5.27s on a formula simplification. DAG size of input: 695 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-12-14 05:59:02,322 INFO L133 SifaRunner]: Sifa could not show that error location is unreachable, found '22336#(and (= 30 (select |#length| 34)) (= (select (select |#memory_int| 23) 0) 32) (= 6 (select |#length| 18)) (= 116 (select (select |#memory_int| 7) 2)) (= (select |#valid| 30) 1) (= (select (select |#memory_int| 20) 1) 37) (= 1 (select |#valid| 5)) (= (select |#length| 3) 12) (= (select |#valid| 15) 1) (= ~executiveFloor~0 4) (= (select |#length| 21) 4) (= (select (select |#memory_int| 21) 1) 37) (<= 0 (+ ~currentFloorID~0 2147483648)) (= (select (select |#memory_int| 23) 1) 37) (= (select (select |#memory_int| 20) 3) 0) (= (select (select |#memory_int| 22) 3) 0) (= (select (select |#memory_int| 5) 3) 0) (= 4 (select |#length| 16)) (= 3 (select |#length| 10)) (= (select (select |#memory_int| 22) 0) 32) (= (select (select |#memory_int| 13) 3) 0) (= (select |#valid| 26) 1) (= (select |#length| 4) 10) (= (select |#length| 8) 3) (= (select |#length| 6) 4) (= (select (select |#memory_int| 13) 1) 37) (= (select |#valid| 35) 1) (= (select |#valid| 9) 1) (= 30 (select |#length| 25)) (= (select (select |#memory_int| 18) 5) 0) (= (select (select |#memory_int| 20) 0) 32) (= (select (select |#memory_int| 6) 0) 91) (= (select |#valid| 11) 1) (= (select |#length| 9) 10) (= (select |#valid| 27) 1) (= (select (select |#memory_int| 8) 0) 37) (= (select |#valid| 33) 1) (= 73 (select (select |#memory_int| 12) 1)) (= (select (select |#memory_int| 22) 1) 37) (<= ~currentFloorID~0 2147483647) (= (select (select |#memory_int| 23) 2) 105) (= (select (select |#memory_int| 10) 0) 117) (= (select (select |#memory_int| 19) 2) 105) (= (select |#length| 15) 4) (= 31 (select |#length| 2)) (= (select (select |#memory_int| 19) 1) 37) (= ~head~0.offset 0) (= 7 (select |#length| 12)) (= (select (select |#memory_int| 22) 2) 105) (= 2 (select |#length| 1)) (= (select (select |#memory_int| 16) 2) 105) (= (select (select |#memory_int| 17) 2) 105) (= (select |#length| 19) 4) (= (select |#valid| 3) 1) (= (select |#valid| 7) 1) (= (select (select |#memory_int| 18) 4) 58) (= (select |#length| 35) 9) (= (select |#valid| 18) 1) (= 91 (select (select |#memory_int| 5) 0)) (= (select |#valid| 22) 1) (= 70 (select (select |#memory_int| 18) 1)) (= 5 (select |#length| 7)) (= (select |#valid| 24) 1) (= (select (select |#memory_int| 19) 3) 0) (= 32 (select (select |#memory_int| 7) 0)) (not (= ~landingButtons_spc1_0~0 0)) (= (select (select |#memory_int| 17) 3) 0) (= (select (select |#memory_int| 5) 1) 95) (= (select |#valid| 12) 1) (= (select |#valid| 32) 1) (= (select |#valid| 28) 1) (= (select |#length| 17) 4) (= (select (select |#memory_int| 13) 2) 105) (= 112 (select (select |#memory_int| 12) 4)) (= (select |#valid| 4) 1) (= (select (select |#memory_int| 16) 1) 37) (= (select |#length| 32) 9) (= (select (select |#memory_int| 20) 2) 105) (= 112 (select (select |#memory_int| 10) 1)) (= (select (select |#memory_int| 8) 2) 0) (= (select (select |#memory_int| 21) 2) 105) (= 0 (select (select |#memory_int| 7) 4)) (= (select |#length| 13) 4) (= 5 (select |#length| 11)) (= (select (select |#memory_int| 17) 1) 37) (= (select (select |#memory_int| 6) 1) 93) (= (select |#valid| 1) 1) (= (select |#valid| 20) 1) (= (select |#length| 36) 25) (= (select |#length| 24) 2) (= (select (select |#memory_int| 12) 6) 0) (= (select |#valid| 21) 1) (= (select (select |#memory_int| 11) 0) 100) (= (select (select |#memory_int| 24) 0) 10) (= 97 (select (select |#memory_int| 7) 1)) (= (select (select |#memory_int| 15) 1) 37) (= (select |#length| 33) 25) (= (select |#length| 5) 4) (= (select |#valid| 14) 1) (= 21 (select |#length| 30)) (= 112 (select (select |#memory_int| 18) 3)) (= (select |#length| 27) 21) (= 119 (select (select |#memory_int| 11) 2)) (= (select |#valid| 0) 0) (= (select (select |#memory_int| 12) 5) 58) (= (select (select |#memory_int| 16) 0) 32) (= (select |#valid| 25) 1) (= ~head~0.base 0) (= (select (select |#memory_int| 14) 3) 0) (= (select (select |#memory_int| 23) 3) 0) (= 95 (select (select |#memory_int| 12) 3)) (= 105 (select (select |#memory_int| 14) 2)) (= (select |#valid| 2) 1) (= (select (select |#memory_int| 14) 1) 37) (= |#NULL.offset| 0) (= (select |#valid| 36) 1) (= (select (select |#memory_int| 10) 2) 0) (= (select (select |#memory_int| 1) 0) 48) (= (select (select |#memory_int| 11) 1) 111) (= (select |#valid| 23) 1) (= 9 (select |#length| 29)) (= 32 (select (select |#memory_int| 7) 3)) (= 4 (select |#length| 23)) (= (select (select |#memory_int| 24) 1) 0) (= (select |#length| 20) 4) (= (select (select |#memory_int| 21) 3) 0) (= 76 (select (select |#memory_int| 12) 2)) (= (select |#valid| 19) 1) (= (select (select |#memory_int| 15) 0) 32) (= 32 (select (select |#memory_int| 13) 0)) (= (select |#valid| 31) 1) (= (select |#valid| 34) 1) (= (select (select |#memory_int| 6) 3) 0) (= (select |#valid| 16) 1) (= (select (select |#memory_int| 15) 2) 105) (= 32 (select (select |#memory_int| 17) 0)) (= (select |#valid| 6) 1) (= (select (select |#memory_int| 15) 3) 0) (= (select (select |#memory_int| 1) 1) 0) (= 30 (select |#length| 28)) (= (select (select |#memory_int| 5) 2) 93) (= (select (select |#memory_int| 14) 0) 32) (= 30 (select |#length| 31)) (= (select |#valid| 29) 1) (= ~maximumWeight~0 100) (= (select (select |#memory_int| 6) 2) 32) (= 32 (select (select |#memory_int| 12) 0)) (= (select |#valid| 17) 1) (= (select (select |#memory_int| 16) 3) 0) (= (select |#valid| 10) 1) (= (select |#valid| 8) 1) (= (select (select |#memory_int| 11) 4) 0) (= 32 (select (select |#memory_int| 19) 0)) (= (select (select |#memory_int| 18) 2) 95) (= 4 (select |#length| 14)) (= (select |#valid| 13) 1) (< 0 |#StackHeapBarrier|) (= ~cleanupTimeShifts~0 12) (= (select |#length| 22) 4) (= 9 (select |#length| 26)) (= |#NULL.base| 0) (= 32 (select (select |#memory_int| 18) 0)) (= (select (select |#memory_int| 8) 1) 105) (= (select (select |#memory_int| 11) 3) 110) (= 32 (select (select |#memory_int| 21) 0)))' at error location [2022-12-14 05:59:02,323 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: ALGORITHM_FAILED [2022-12-14 05:59:02,323 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-12-14 05:59:02,323 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 5, 7] total 16 [2022-12-14 05:59:02,323 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1313840590] [2022-12-14 05:59:02,323 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-12-14 05:59:02,324 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-14 05:59:02,324 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:02,325 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-14 05:59:02,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=771, Invalid=7239, Unknown=0, NotChecked=0, Total=8010 [2022-12-14 05:59:02,329 INFO L87 Difference]: Start difference. First operand 2668 states and 4275 transitions. Second operand has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-12-14 05:59:04,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:04,061 INFO L93 Difference]: Finished difference Result 3353 states and 5418 transitions. [2022-12-14 05:59:04,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-12-14 05:59:04,062 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) Word has length 162 [2022-12-14 05:59:04,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:04,074 INFO L225 Difference]: With dead ends: 3353 [2022-12-14 05:59:04,074 INFO L226 Difference]: Without dead ends: 3334 [2022-12-14 05:59:04,077 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 498 GetRequests, 398 SyntacticMatches, 5 SemanticMatches, 95 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3291 ImplicationChecksByTransitivity, 96.5s TimeCoverageRelationStatistics Valid=872, Invalid=8440, Unknown=0, NotChecked=0, Total=9312 [2022-12-14 05:59:04,077 INFO L413 NwaCegarLoop]: 548 mSDtfsCounter, 1583 mSDsluCounter, 3249 mSDsCounter, 0 mSdLazyCounter, 1649 mSolverCounterSat, 373 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1587 SdHoareTripleChecker+Valid, 3797 SdHoareTripleChecker+Invalid, 2022 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 373 IncrementalHoareTripleChecker+Valid, 1649 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:04,077 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1587 Valid, 3797 Invalid, 2022 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [373 Valid, 1649 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2022-12-14 05:59:04,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3334 states. [2022-12-14 05:59:04,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3334 to 3150. [2022-12-14 05:59:04,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3150 states, 2242 states have (on average 1.5428189116859947) internal successors, (3459), 2353 states have internal predecessors, (3459), 744 states have call successors, (744), 149 states have call predecessors, (744), 163 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:04,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3150 states to 3150 states and 5069 transitions. [2022-12-14 05:59:04,269 INFO L78 Accepts]: Start accepts. Automaton has 3150 states and 5069 transitions. Word has length 162 [2022-12-14 05:59:04,269 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:04,269 INFO L495 AbstractCegarLoop]: Abstraction has 3150 states and 5069 transitions. [2022-12-14 05:59:04,270 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 8.25) internal successors, (132), 16 states have internal predecessors, (132), 8 states have call successors, (47), 3 states have call predecessors, (47), 5 states have return successors, (46), 8 states have call predecessors, (46), 7 states have call successors, (46) [2022-12-14 05:59:04,270 INFO L276 IsEmpty]: Start isEmpty. Operand 3150 states and 5069 transitions. [2022-12-14 05:59:04,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2022-12-14 05:59:04,276 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:04,276 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:59:04,285 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2022-12-14 05:59:04,476 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:04,476 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:04,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:04,477 INFO L85 PathProgramCache]: Analyzing trace with hash -1724624676, now seen corresponding path program 1 times [2022-12-14 05:59:04,477 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:04,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188821829] [2022-12-14 05:59:04,477 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:04,477 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:04,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:04,594 INFO L134 CoverageAnalysis]: Checked inductivity of 111 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 05:59:04,594 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:04,594 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188821829] [2022-12-14 05:59:04,594 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188821829] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:04,594 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:59:04,594 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:59:04,595 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1211348952] [2022-12-14 05:59:04,595 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:04,595 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:04,595 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:04,595 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:04,595 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:59:04,596 INFO L87 Difference]: Start difference. First operand 3150 states and 5069 transitions. Second operand has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:59:04,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:04,866 INFO L93 Difference]: Finished difference Result 5662 states and 9311 transitions. [2022-12-14 05:59:04,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:04,866 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) Word has length 159 [2022-12-14 05:59:04,866 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:04,882 INFO L225 Difference]: With dead ends: 5662 [2022-12-14 05:59:04,882 INFO L226 Difference]: Without dead ends: 3518 [2022-12-14 05:59:04,892 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:59:04,892 INFO L413 NwaCegarLoop]: 625 mSDtfsCounter, 95 mSDsluCounter, 1121 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 1746 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:04,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 1746 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:59:04,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3518 states. [2022-12-14 05:59:05,051 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3518 to 3166. [2022-12-14 05:59:05,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3166 states, 2258 states have (on average 1.5389725420726306) internal successors, (3475), 2369 states have internal predecessors, (3475), 744 states have call successors, (744), 149 states have call predecessors, (744), 163 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:05,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3166 states to 3166 states and 5085 transitions. [2022-12-14 05:59:05,069 INFO L78 Accepts]: Start accepts. Automaton has 3166 states and 5085 transitions. Word has length 159 [2022-12-14 05:59:05,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:05,070 INFO L495 AbstractCegarLoop]: Abstraction has 3166 states and 5085 transitions. [2022-12-14 05:59:05,070 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 20.0) internal successors, (80), 4 states have internal predecessors, (80), 2 states have call successors, (26), 2 states have call predecessors, (26), 2 states have return successors, (25), 2 states have call predecessors, (25), 2 states have call successors, (25) [2022-12-14 05:59:05,070 INFO L276 IsEmpty]: Start isEmpty. Operand 3166 states and 5085 transitions. [2022-12-14 05:59:05,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2022-12-14 05:59:05,075 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:05,075 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-14 05:59:05,075 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-12-14 05:59:05,075 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:05,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:05,076 INFO L85 PathProgramCache]: Analyzing trace with hash 356666466, now seen corresponding path program 1 times [2022-12-14 05:59:05,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:05,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2115042663] [2022-12-14 05:59:05,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:05,076 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:05,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:05,189 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 4 proven. 16 refuted. 0 times theorem prover too weak. 101 trivial. 0 not checked. [2022-12-14 05:59:05,189 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:05,189 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2115042663] [2022-12-14 05:59:05,190 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2115042663] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:59:05,190 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [486509151] [2022-12-14 05:59:05,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:05,190 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:05,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:59:05,191 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:59:05,192 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-12-14 05:59:05,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:05,509 INFO L263 TraceCheckSpWp]: Trace formula consists of 2030 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:59:05,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:59:05,530 INFO L134 CoverageAnalysis]: Checked inductivity of 121 backedges. 64 proven. 0 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2022-12-14 05:59:05,530 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:59:05,530 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [486509151] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:05,530 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:59:05,530 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:59:05,530 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437245317] [2022-12-14 05:59:05,531 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:05,531 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:05,531 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:05,532 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:05,532 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:59:05,532 INFO L87 Difference]: Start difference. First operand 3166 states and 5085 transitions. Second operand has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:05,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:05,879 INFO L93 Difference]: Finished difference Result 5384 states and 8842 transitions. [2022-12-14 05:59:05,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:05,879 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 162 [2022-12-14 05:59:05,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:05,902 INFO L225 Difference]: With dead ends: 5384 [2022-12-14 05:59:05,902 INFO L226 Difference]: Without dead ends: 3400 [2022-12-14 05:59:05,914 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 167 GetRequests, 162 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 05:59:05,915 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 213 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 213 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:05,915 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [213 Valid, 1446 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:59:05,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3400 states. [2022-12-14 05:59:06,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3400 to 3400. [2022-12-14 05:59:06,114 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3400 states, 2486 states have (on average 1.574014481094127) internal successors, (3913), 2597 states have internal predecessors, (3913), 744 states have call successors, (744), 155 states have call predecessors, (744), 169 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:06,128 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3400 states to 3400 states and 5523 transitions. [2022-12-14 05:59:06,128 INFO L78 Accepts]: Start accepts. Automaton has 3400 states and 5523 transitions. Word has length 162 [2022-12-14 05:59:06,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:06,128 INFO L495 AbstractCegarLoop]: Abstraction has 3400 states and 5523 transitions. [2022-12-14 05:59:06,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 22.5) internal successors, (90), 4 states have internal predecessors, (90), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:06,129 INFO L276 IsEmpty]: Start isEmpty. Operand 3400 states and 5523 transitions. [2022-12-14 05:59:06,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 168 [2022-12-14 05:59:06,134 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:06,134 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:06,143 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2022-12-14 05:59:06,335 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2022-12-14 05:59:06,335 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:06,336 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:06,336 INFO L85 PathProgramCache]: Analyzing trace with hash 312991841, now seen corresponding path program 1 times [2022-12-14 05:59:06,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:06,336 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2094958279] [2022-12-14 05:59:06,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:06,337 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:06,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:06,512 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 9 proven. 15 refuted. 0 times theorem prover too weak. 107 trivial. 0 not checked. [2022-12-14 05:59:06,512 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2094958279] [2022-12-14 05:59:06,512 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2094958279] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:59:06,512 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568166669] [2022-12-14 05:59:06,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:06,512 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:06,513 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:59:06,513 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:59:06,514 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-12-14 05:59:06,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:06,830 INFO L263 TraceCheckSpWp]: Trace formula consists of 2035 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:59:06,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:59:06,846 INFO L134 CoverageAnalysis]: Checked inductivity of 131 backedges. 80 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-14 05:59:06,846 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:59:06,846 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568166669] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:06,846 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:59:06,846 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:59:06,846 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970215548] [2022-12-14 05:59:06,846 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:06,846 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:06,846 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:06,847 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:06,847 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:59:06,847 INFO L87 Difference]: Start difference. First operand 3400 states and 5523 transitions. Second operand has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:07,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:07,128 INFO L93 Difference]: Finished difference Result 5763 states and 9541 transitions. [2022-12-14 05:59:07,128 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:07,128 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 167 [2022-12-14 05:59:07,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:07,142 INFO L225 Difference]: With dead ends: 5763 [2022-12-14 05:59:07,143 INFO L226 Difference]: Without dead ends: 3634 [2022-12-14 05:59:07,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 172 GetRequests, 167 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 05:59:07,151 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 211 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 242 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 211 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 242 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:07,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [211 Valid, 1446 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 242 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:59:07,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3634 states. [2022-12-14 05:59:07,307 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3634 to 3634. [2022-12-14 05:59:07,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3634 states, 2714 states have (on average 1.603168754605748) internal successors, (4351), 2825 states have internal predecessors, (4351), 744 states have call successors, (744), 161 states have call predecessors, (744), 175 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:07,327 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3634 states to 3634 states and 5961 transitions. [2022-12-14 05:59:07,327 INFO L78 Accepts]: Start accepts. Automaton has 3634 states and 5961 transitions. Word has length 167 [2022-12-14 05:59:07,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:07,328 INFO L495 AbstractCegarLoop]: Abstraction has 3634 states and 5961 transitions. [2022-12-14 05:59:07,328 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 23.5) internal successors, (94), 4 states have internal predecessors, (94), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:07,328 INFO L276 IsEmpty]: Start isEmpty. Operand 3634 states and 5961 transitions. [2022-12-14 05:59:07,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 172 [2022-12-14 05:59:07,337 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:07,337 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:07,344 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2022-12-14 05:59:07,537 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-12-14 05:59:07,538 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:07,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:07,538 INFO L85 PathProgramCache]: Analyzing trace with hash -325913487, now seen corresponding path program 1 times [2022-12-14 05:59:07,538 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:07,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1444739085] [2022-12-14 05:59:07,538 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:07,538 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:07,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:07,646 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 15 proven. 12 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2022-12-14 05:59:07,646 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1444739085] [2022-12-14 05:59:07,646 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1444739085] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:59:07,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1274858712] [2022-12-14 05:59:07,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:07,647 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:07,647 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:59:07,648 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:59:07,648 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-12-14 05:59:07,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:07,858 INFO L263 TraceCheckSpWp]: Trace formula consists of 2039 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:59:07,862 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:59:07,877 INFO L134 CoverageAnalysis]: Checked inductivity of 137 backedges. 85 proven. 0 refuted. 0 times theorem prover too weak. 52 trivial. 0 not checked. [2022-12-14 05:59:07,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:59:07,877 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1274858712] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:07,877 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:59:07,877 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:59:07,877 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73889618] [2022-12-14 05:59:07,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:07,878 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:07,878 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:07,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:07,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:59:07,878 INFO L87 Difference]: Start difference. First operand 3634 states and 5961 transitions. Second operand has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:08,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:08,171 INFO L93 Difference]: Finished difference Result 6142 states and 10240 transitions. [2022-12-14 05:59:08,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:08,172 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 171 [2022-12-14 05:59:08,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:08,190 INFO L225 Difference]: With dead ends: 6142 [2022-12-14 05:59:08,190 INFO L226 Difference]: Without dead ends: 3868 [2022-12-14 05:59:08,197 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 176 GetRequests, 171 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 05:59:08,198 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 209 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 236 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 255 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:08,198 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 1446 Invalid, 255 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 236 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-14 05:59:08,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3868 states. [2022-12-14 05:59:08,347 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3868 to 3868. [2022-12-14 05:59:08,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3868 states, 2942 states have (on average 1.6278042148198504) internal successors, (4789), 3053 states have internal predecessors, (4789), 744 states have call successors, (744), 167 states have call predecessors, (744), 181 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:08,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3868 states to 3868 states and 6399 transitions. [2022-12-14 05:59:08,363 INFO L78 Accepts]: Start accepts. Automaton has 3868 states and 6399 transitions. Word has length 171 [2022-12-14 05:59:08,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:08,364 INFO L495 AbstractCegarLoop]: Abstraction has 3868 states and 6399 transitions. [2022-12-14 05:59:08,364 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.5) internal successors, (98), 4 states have internal predecessors, (98), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:08,364 INFO L276 IsEmpty]: Start isEmpty. Operand 3868 states and 6399 transitions. [2022-12-14 05:59:08,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 175 [2022-12-14 05:59:08,370 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:08,370 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:08,378 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2022-12-14 05:59:08,571 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:08,571 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:08,571 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:08,572 INFO L85 PathProgramCache]: Analyzing trace with hash -1711082494, now seen corresponding path program 1 times [2022-12-14 05:59:08,572 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:08,572 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1496556686] [2022-12-14 05:59:08,572 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:08,572 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:08,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:08,699 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 05:59:08,699 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:08,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1496556686] [2022-12-14 05:59:08,699 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1496556686] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:59:08,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1883138048] [2022-12-14 05:59:08,699 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:08,699 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:08,699 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:59:08,700 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:59:08,701 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-12-14 05:59:08,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:08,971 INFO L263 TraceCheckSpWp]: Trace formula consists of 2042 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-14 05:59:08,975 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:59:08,993 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 76 proven. 0 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2022-12-14 05:59:08,993 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-14 05:59:08,993 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1883138048] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:08,993 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-12-14 05:59:08,994 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2022-12-14 05:59:09,003 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [762137974] [2022-12-14 05:59:09,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:09,004 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:09,004 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:09,004 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:09,004 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-14 05:59:09,004 INFO L87 Difference]: Start difference. First operand 3868 states and 6399 transitions. Second operand has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:09,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:09,365 INFO L93 Difference]: Finished difference Result 6521 states and 10939 transitions. [2022-12-14 05:59:09,366 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:09,366 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 174 [2022-12-14 05:59:09,366 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:09,380 INFO L225 Difference]: With dead ends: 6521 [2022-12-14 05:59:09,380 INFO L226 Difference]: Without dead ends: 4102 [2022-12-14 05:59:09,387 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 179 GetRequests, 174 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 05:59:09,388 INFO L413 NwaCegarLoop]: 490 mSDtfsCounter, 207 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 207 SdHoareTripleChecker+Valid, 1446 SdHoareTripleChecker+Invalid, 254 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:09,388 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [207 Valid, 1446 Invalid, 254 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:59:09,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4102 states. [2022-12-14 05:59:09,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4102 to 4102. [2022-12-14 05:59:09,540 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4102 states, 3170 states have (on average 1.6488958990536278) internal successors, (5227), 3281 states have internal predecessors, (5227), 744 states have call successors, (744), 173 states have call predecessors, (744), 187 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:09,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4102 states to 4102 states and 6837 transitions. [2022-12-14 05:59:09,554 INFO L78 Accepts]: Start accepts. Automaton has 4102 states and 6837 transitions. Word has length 174 [2022-12-14 05:59:09,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:09,554 INFO L495 AbstractCegarLoop]: Abstraction has 4102 states and 6837 transitions. [2022-12-14 05:59:09,554 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 25.5) internal successors, (102), 4 states have internal predecessors, (102), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:09,554 INFO L276 IsEmpty]: Start isEmpty. Operand 4102 states and 6837 transitions. [2022-12-14 05:59:09,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-14 05:59:09,559 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:09,560 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:09,566 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2022-12-14 05:59:09,760 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:09,760 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:09,761 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:09,761 INFO L85 PathProgramCache]: Analyzing trace with hash 1163499282, now seen corresponding path program 1 times [2022-12-14 05:59:09,761 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:09,761 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648304628] [2022-12-14 05:59:09,761 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:09,761 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:09,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:09,878 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 30 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 05:59:09,878 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:09,879 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648304628] [2022-12-14 05:59:09,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648304628] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:09,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:59:09,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-14 05:59:09,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099301695] [2022-12-14 05:59:09,879 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:09,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-14 05:59:09,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:09,880 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-14 05:59:09,880 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-14 05:59:09,880 INFO L87 Difference]: Start difference. First operand 4102 states and 6837 transitions. Second operand has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:10,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:10,203 INFO L93 Difference]: Finished difference Result 7212 states and 12193 transitions. [2022-12-14 05:59:10,203 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-14 05:59:10,204 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) Word has length 176 [2022-12-14 05:59:10,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:10,217 INFO L225 Difference]: With dead ends: 7212 [2022-12-14 05:59:10,217 INFO L226 Difference]: Without dead ends: 4306 [2022-12-14 05:59:10,226 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-14 05:59:10,226 INFO L413 NwaCegarLoop]: 503 mSDtfsCounter, 99 mSDsluCounter, 956 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 1459 SdHoareTripleChecker+Invalid, 307 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:10,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [99 Valid, 1459 Invalid, 307 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-14 05:59:10,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4306 states. [2022-12-14 05:59:10,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4306 to 4306. [2022-12-14 05:59:10,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4306 states, 3368 states have (on average 1.5840261282660333) internal successors, (5335), 3479 states have internal predecessors, (5335), 744 states have call successors, (744), 179 states have call predecessors, (744), 193 states have return successors, (866), 722 states have call predecessors, (866), 739 states have call successors, (866) [2022-12-14 05:59:10,388 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4306 states to 4306 states and 6945 transitions. [2022-12-14 05:59:10,389 INFO L78 Accepts]: Start accepts. Automaton has 4306 states and 6945 transitions. Word has length 176 [2022-12-14 05:59:10,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:10,389 INFO L495 AbstractCegarLoop]: Abstraction has 4306 states and 6945 transitions. [2022-12-14 05:59:10,389 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 24.25) internal successors, (97), 4 states have internal predecessors, (97), 2 states have call successors, (27), 2 states have call predecessors, (27), 3 states have return successors, (26), 2 states have call predecessors, (26), 2 states have call successors, (26) [2022-12-14 05:59:10,389 INFO L276 IsEmpty]: Start isEmpty. Operand 4306 states and 6945 transitions. [2022-12-14 05:59:10,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 177 [2022-12-14 05:59:10,394 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:10,394 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:10,394 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-12-14 05:59:10,394 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:10,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:10,394 INFO L85 PathProgramCache]: Analyzing trace with hash 2101499139, now seen corresponding path program 1 times [2022-12-14 05:59:10,395 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:10,395 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156703150] [2022-12-14 05:59:10,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:10,395 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:10,610 INFO L134 CoverageAnalysis]: Checked inductivity of 126 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2022-12-14 05:59:10,611 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:10,611 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156703150] [2022-12-14 05:59:10,611 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156703150] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:10,611 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:59:10,611 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:59:10,611 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1629848059] [2022-12-14 05:59:10,611 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:10,612 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:59:10,612 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:10,612 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:59:10,612 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:59:10,612 INFO L87 Difference]: Start difference. First operand 4306 states and 6945 transitions. Second operand has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2022-12-14 05:59:13,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:13,024 INFO L93 Difference]: Finished difference Result 10555 states and 17143 transitions. [2022-12-14 05:59:13,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-12-14 05:59:13,025 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) Word has length 176 [2022-12-14 05:59:13,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:13,041 INFO L225 Difference]: With dead ends: 10555 [2022-12-14 05:59:13,041 INFO L226 Difference]: Without dead ends: 5962 [2022-12-14 05:59:13,052 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=82, Invalid=260, Unknown=0, NotChecked=0, Total=342 [2022-12-14 05:59:13,052 INFO L413 NwaCegarLoop]: 346 mSDtfsCounter, 1719 mSDsluCounter, 1248 mSDsCounter, 0 mSdLazyCounter, 3628 mSolverCounterSat, 775 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1756 SdHoareTripleChecker+Valid, 1594 SdHoareTripleChecker+Invalid, 4403 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 775 IncrementalHoareTripleChecker+Valid, 3628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.0s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:13,053 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1756 Valid, 1594 Invalid, 4403 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [775 Valid, 3628 Invalid, 0 Unknown, 0 Unchecked, 2.0s Time] [2022-12-14 05:59:13,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5962 states. [2022-12-14 05:59:13,268 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5962 to 5618. [2022-12-14 05:59:13,272 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5618 states, 4294 states have (on average 1.5223567768979973) internal successors, (6537), 4467 states have internal predecessors, (6537), 991 states have call successors, (991), 296 states have call predecessors, (991), 332 states have return successors, (1183), 946 states have call predecessors, (1183), 986 states have call successors, (1183) [2022-12-14 05:59:13,289 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5618 states to 5618 states and 8711 transitions. [2022-12-14 05:59:13,290 INFO L78 Accepts]: Start accepts. Automaton has 5618 states and 8711 transitions. Word has length 176 [2022-12-14 05:59:13,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:13,290 INFO L495 AbstractCegarLoop]: Abstraction has 5618 states and 8711 transitions. [2022-12-14 05:59:13,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 12.125) internal successors, (97), 8 states have internal predecessors, (97), 6 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 5 states have call successors, (26) [2022-12-14 05:59:13,291 INFO L276 IsEmpty]: Start isEmpty. Operand 5618 states and 8711 transitions. [2022-12-14 05:59:13,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 178 [2022-12-14 05:59:13,297 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:13,298 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:13,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-12-14 05:59:13,298 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:13,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:13,298 INFO L85 PathProgramCache]: Analyzing trace with hash 1895444801, now seen corresponding path program 1 times [2022-12-14 05:59:13,298 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:13,298 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1256977187] [2022-12-14 05:59:13,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:13,299 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:13,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:13,547 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 141 trivial. 0 not checked. [2022-12-14 05:59:13,547 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:13,547 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1256977187] [2022-12-14 05:59:13,547 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1256977187] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-14 05:59:13,547 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-14 05:59:13,548 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-12-14 05:59:13,548 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741538314] [2022-12-14 05:59:13,548 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-14 05:59:13,548 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-14 05:59:13,548 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-12-14 05:59:13,549 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-14 05:59:13,549 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-12-14 05:59:13,549 INFO L87 Difference]: Start difference. First operand 5618 states and 8711 transitions. Second operand has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2022-12-14 05:59:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-14 05:59:15,522 INFO L93 Difference]: Finished difference Result 10436 states and 16312 transitions. [2022-12-14 05:59:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-12-14 05:59:15,523 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) Word has length 177 [2022-12-14 05:59:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-14 05:59:15,542 INFO L225 Difference]: With dead ends: 10436 [2022-12-14 05:59:15,542 INFO L226 Difference]: Without dead ends: 7395 [2022-12-14 05:59:15,549 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=238, Unknown=0, NotChecked=0, Total=306 [2022-12-14 05:59:15,550 INFO L413 NwaCegarLoop]: 282 mSDtfsCounter, 1137 mSDsluCounter, 986 mSDsCounter, 0 mSdLazyCounter, 3882 mSolverCounterSat, 511 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1206 SdHoareTripleChecker+Valid, 1268 SdHoareTripleChecker+Invalid, 4393 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 511 IncrementalHoareTripleChecker+Valid, 3882 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-12-14 05:59:15,550 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1206 Valid, 1268 Invalid, 4393 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [511 Valid, 3882 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2022-12-14 05:59:15,554 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7395 states. [2022-12-14 05:59:15,812 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7395 to 7117. [2022-12-14 05:59:15,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7117 states, 5481 states have (on average 1.5201605546433132) internal successors, (8332), 5704 states have internal predecessors, (8332), 1217 states have call successors, (1217), 366 states have call predecessors, (1217), 418 states have return successors, (1489), 1174 states have call predecessors, (1489), 1212 states have call successors, (1489) [2022-12-14 05:59:15,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7117 states to 7117 states and 11038 transitions. [2022-12-14 05:59:15,837 INFO L78 Accepts]: Start accepts. Automaton has 7117 states and 11038 transitions. Word has length 177 [2022-12-14 05:59:15,837 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-14 05:59:15,837 INFO L495 AbstractCegarLoop]: Abstraction has 7117 states and 11038 transitions. [2022-12-14 05:59:15,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 13.0) internal successors, (91), 7 states have internal predecessors, (91), 5 states have call successors, (27), 3 states have call predecessors, (27), 3 states have return successors, (26), 6 states have call predecessors, (26), 4 states have call successors, (26) [2022-12-14 05:59:15,838 INFO L276 IsEmpty]: Start isEmpty. Operand 7117 states and 11038 transitions. [2022-12-14 05:59:15,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2022-12-14 05:59:15,844 INFO L187 NwaCegarLoop]: Found error trace [2022-12-14 05:59:15,844 INFO L195 NwaCegarLoop]: trace histogram [7, 6, 6, 6, 5, 4, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:59:15,844 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-12-14 05:59:15,844 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-12-14 05:59:15,845 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-14 05:59:15,845 INFO L85 PathProgramCache]: Analyzing trace with hash 258018039, now seen corresponding path program 1 times [2022-12-14 05:59:15,845 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-12-14 05:59:15,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1759766054] [2022-12-14 05:59:15,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:15,845 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-12-14 05:59:15,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:17,001 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 17 proven. 35 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2022-12-14 05:59:17,002 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-12-14 05:59:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1759766054] [2022-12-14 05:59:17,002 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1759766054] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-14 05:59:17,002 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542845507] [2022-12-14 05:59:17,002 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-14 05:59:17,002 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-12-14 05:59:17,002 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 [2022-12-14 05:59:17,003 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-12-14 05:59:17,004 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_7764a636-1014-4952-a160-2b21496a699d/bin/utaipan-gh47qXpMRh/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-12-14 05:59:17,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-14 05:59:17,249 INFO L263 TraceCheckSpWp]: Trace formula consists of 2050 conjuncts, 131 conjunts are in the unsatisfiable core [2022-12-14 05:59:17,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-14 05:59:19,731 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 84 proven. 14 refuted. 0 times theorem prover too weak. 43 trivial. 0 not checked. [2022-12-14 05:59:19,731 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-14 05:59:44,504 WARN L233 SmtUtils]: Spent 24.16s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:00:12,766 WARN L233 SmtUtils]: Spent 25.15s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:00:40,332 WARN L233 SmtUtils]: Spent 26.70s on a formula simplification. DAG size of input: 1445 DAG size of output: 55 (called from [L 278] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.cfg.transitions.TransFormulaUtils.sequentialComposition) [2022-12-14 06:00:43,711 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 06:00:49,400 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 06:00:49,660 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 06:00:55,360 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 06:00:55,631 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 06:01:01,303 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 06:01:01,577 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 06:01:07,098 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 06:01:07,361 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 9813 disjunctions. This might take some time... [2022-12-14 06:01:12,799 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 9813 disjunctions. [2022-12-14 06:01:12,883 WARN L176 XnfTransformerHelper]: Simplifying conjuction of 49188 disjunctions. This might take some time... [2022-12-14 06:03:43,513 INFO L192 XnfTransformerHelper]: Simplified to conjuction of 49188 disjunctions.