./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version b5237d83 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_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba --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 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 --- 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-b5237d8 [2022-11-22 02:31:23,958 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-22 02:31:23,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-22 02:31:23,981 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-22 02:31:23,981 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-22 02:31:23,982 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-22 02:31:23,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-22 02:31:23,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-22 02:31:23,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-22 02:31:23,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-22 02:31:23,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-22 02:31:23,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-22 02:31:23,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-22 02:31:23,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-22 02:31:23,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-22 02:31:23,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-22 02:31:23,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-22 02:31:23,997 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-22 02:31:23,999 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-22 02:31:24,001 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-22 02:31:24,003 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-22 02:31:24,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-22 02:31:24,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-22 02:31:24,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-22 02:31:24,011 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-22 02:31:24,011 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-22 02:31:24,012 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-22 02:31:24,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-22 02:31:24,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-22 02:31:24,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-22 02:31:24,015 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-22 02:31:24,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-22 02:31:24,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-22 02:31:24,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-22 02:31:24,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-22 02:31:24,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-22 02:31:24,021 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-22 02:31:24,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-22 02:31:24,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-22 02:31:24,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-22 02:31:24,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-22 02:31:24,025 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-22 02:31:24,049 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-22 02:31:24,049 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-22 02:31:24,050 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-22 02:31:24,050 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-22 02:31:24,051 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-22 02:31:24,051 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-22 02:31:24,052 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-22 02:31:24,052 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-22 02:31:24,052 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-22 02:31:24,053 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-22 02:31:24,053 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-22 02:31:24,053 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-22 02:31:24,054 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-22 02:31:24,054 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-22 02:31:24,054 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-22 02:31:24,055 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-22 02:31:24,055 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-22 02:31:24,055 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-22 02:31:24,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-22 02:31:24,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-22 02:31:24,057 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-22 02:31:24,057 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-22 02:31:24,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-22 02:31:24,058 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-22 02:31:24,058 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-22 02:31:24,058 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-22 02:31:24,058 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-22 02:31:24,059 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-22 02:31:24,059 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-22 02:31:24,059 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-22 02:31:24,060 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-22 02:31:24,060 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-22 02:31:24,060 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:31:24,061 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-22 02:31:24,061 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-22 02:31:24,061 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-22 02:31:24,061 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-22 02:31:24,062 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-22 02:31:24,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-22 02:31:24,062 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-22 02:31:24,063 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-22 02:31:24,063 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_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8f67cb4d69b9f8349c20986099ec654a7bad708130567f012247d97f1e51ceb8 [2022-11-22 02:31:24,310 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-22 02:31:24,335 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-22 02:31:24,338 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-22 02:31:24,339 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-22 02:31:24,340 INFO L275 PluginConnector]: CDTParser initialized [2022-11-22 02:31:24,341 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/../../sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-11-22 02:31:27,559 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-22 02:31:27,968 INFO L351 CDTParser]: Found 1 translation units. [2022-11-22 02:31:27,975 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c [2022-11-22 02:31:27,993 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/data/28254c3e6/02dd6fa441894ecba61933066a93ff97/FLAG8c2c66eeb [2022-11-22 02:31:28,010 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/data/28254c3e6/02dd6fa441894ecba61933066a93ff97 [2022-11-22 02:31:28,015 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-22 02:31:28,018 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-22 02:31:28,023 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-22 02:31:28,023 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-22 02:31:28,027 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-22 02:31:28,028 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@384d7d70 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28, skipping insertion in model container [2022-11-22 02:31:28,030 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-22 02:31:28,114 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-22 02:31:28,302 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_2447be16-ddb1-429e-a4fb-32ca001e4c6b/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-11-22 02:31:28,675 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:31:28,687 INFO L203 MainTranslator]: Completed pre-run [2022-11-22 02:31:28,700 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_2447be16-ddb1-429e-a4fb-32ca001e4c6b/sv-benchmarks/c/product-lines/elevator_spec1_product18.cil.c[1545,1558] [2022-11-22 02:31:28,832 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-22 02:31:28,867 INFO L208 MainTranslator]: Completed translation [2022-11-22 02:31:28,868 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28 WrapperNode [2022-11-22 02:31:28,868 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-22 02:31:28,869 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-22 02:31:28,869 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-22 02:31:28,870 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-22 02:31:28,877 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,913 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,966 INFO L138 Inliner]: procedures = 92, calls = 339, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 806 [2022-11-22 02:31:28,966 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-22 02:31:28,967 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-22 02:31:28,967 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-22 02:31:28,967 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-22 02:31:28,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,990 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:28,990 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,006 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,017 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,021 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,031 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-22 02:31:29,032 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-22 02:31:29,032 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-22 02:31:29,032 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-22 02:31:29,033 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (1/1) ... [2022-11-22 02:31:29,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-22 02:31:29,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:31:29,065 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-22 02:31:29,088 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-22 02:31:29,123 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-22 02:31:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-22 02:31:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-22 02:31:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-22 02:31:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-22 02:31:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-22 02:31:29,124 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-22 02:31:29,124 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-22 02:31:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-22 02:31:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-22 02:31:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-22 02:31:29,125 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-22 02:31:29,125 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-22 02:31:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-22 02:31:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-22 02:31:29,126 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-22 02:31:29,126 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-22 02:31:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-22 02:31:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-22 02:31:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-22 02:31:29,127 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-22 02:31:29,127 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-22 02:31:29,128 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-22 02:31:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-22 02:31:29,129 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-22 02:31:29,129 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-22 02:31:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-22 02:31:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-22 02:31:29,130 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-22 02:31:29,130 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-22 02:31:29,132 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-22 02:31:29,132 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-22 02:31:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-22 02:31:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-22 02:31:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-22 02:31:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-22 02:31:29,133 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-22 02:31:29,133 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-22 02:31:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__weight [2022-11-22 02:31:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__weight [2022-11-22 02:31:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-22 02:31:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-22 02:31:29,134 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-22 02:31:29,134 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-22 02:31:29,135 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-22 02:31:29,135 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-22 02:31:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-22 02:31:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-22 02:31:29,136 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-22 02:31:29,136 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-22 02:31:29,340 INFO L235 CfgBuilder]: Building ICFG [2022-11-22 02:31:29,342 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-22 02:31:30,766 INFO L276 CfgBuilder]: Performing block encoding [2022-11-22 02:31:31,604 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-22 02:31:31,604 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-22 02:31:31,609 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:31 BoogieIcfgContainer [2022-11-22 02:31:31,609 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-22 02:31:31,612 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-22 02:31:31,612 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-22 02:31:31,615 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-22 02:31:31,616 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 02:31:28" (1/3) ... [2022-11-22 02:31:31,618 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327ff3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:31, skipping insertion in model container [2022-11-22 02:31:31,619 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 02:31:28" (2/3) ... [2022-11-22 02:31:31,620 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@327ff3a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 02:31:31, skipping insertion in model container [2022-11-22 02:31:31,620 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 02:31:31" (3/3) ... [2022-11-22 02:31:31,622 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product18.cil.c [2022-11-22 02:31:31,645 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-22 02:31:31,645 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-22 02:31:31,738 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-22 02:31:31,747 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;@47176931, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-22 02:31:31,748 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-22 02:31:31,755 INFO L276 IsEmpty]: Start isEmpty. Operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) [2022-11-22 02:31:31,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-11-22 02:31:31,785 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:31,786 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:31,787 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:31,795 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:31,796 INFO L85 PathProgramCache]: Analyzing trace with hash 876329650, now seen corresponding path program 1 times [2022-11-22 02:31:31,807 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:31,808 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [824299560] [2022-11-22 02:31:31,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:31,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:32,370 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:32,371 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:32,371 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [824299560] [2022-11-22 02:31:32,372 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [824299560] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:32,372 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:32,372 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-11-22 02:31:32,374 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822408796] [2022-11-22 02:31:32,375 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:32,380 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-11-22 02:31:32,381 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:32,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-11-22 02:31:32,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-11-22 02:31:32,474 INFO L87 Difference]: Start difference. First operand has 363 states, 244 states have (on average 1.610655737704918) internal successors, (393), 267 states have internal predecessors, (393), 94 states have call successors, (94), 23 states have call predecessors, (94), 23 states have return successors, (94), 87 states have call predecessors, (94), 94 states have call successors, (94) Second operand has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-22 02:31:32,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:32,735 INFO L93 Difference]: Finished difference Result 381 states and 608 transitions. [2022-11-22 02:31:32,738 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-11-22 02:31:32,740 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) Word has length 50 [2022-11-22 02:31:32,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:32,761 INFO L225 Difference]: With dead ends: 381 [2022-11-22 02:31:32,761 INFO L226 Difference]: Without dead ends: 359 [2022-11-22 02:31:32,764 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 [2022-11-22 02:31:32,767 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 539 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:32,768 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 539 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:32,790 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2022-11-22 02:31:32,849 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 359. [2022-11-22 02:31:32,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 242 states have (on average 1.5991735537190082) internal successors, (387), 263 states have internal predecessors, (387), 94 states have call successors, (94), 23 states have call predecessors, (94), 22 states have return successors, (89), 86 states have call predecessors, (89), 89 states have call successors, (89) [2022-11-22 02:31:32,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 570 transitions. [2022-11-22 02:31:32,859 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 570 transitions. Word has length 50 [2022-11-22 02:31:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:32,860 INFO L495 AbstractCegarLoop]: Abstraction has 359 states and 570 transitions. [2022-11-22 02:31:32,861 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 14.5) internal successors, (29), 2 states have internal predecessors, (29), 2 states have call successors, (10), 2 states have call predecessors, (10), 2 states have return successors, (9), 2 states have call predecessors, (9), 1 states have call successors, (9) [2022-11-22 02:31:32,861 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 570 transitions. [2022-11-22 02:31:32,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2022-11-22 02:31:32,865 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:32,865 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:32,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-22 02:31:32,866 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:32,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:32,867 INFO L85 PathProgramCache]: Analyzing trace with hash -2100243943, now seen corresponding path program 1 times [2022-11-22 02:31:32,867 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:32,867 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1531820020] [2022-11-22 02:31:32,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:32,868 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:33,749 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:33,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:33,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1531820020] [2022-11-22 02:31:33,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1531820020] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:33,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:33,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:31:33,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810121553] [2022-11-22 02:31:33,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:33,752 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:33,753 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:33,753 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:33,754 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:31:33,756 INFO L87 Difference]: Start difference. First operand 359 states and 570 transitions. Second operand has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-22 02:31:36,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:36,105 INFO L93 Difference]: Finished difference Result 1163 states and 1893 transitions. [2022-11-22 02:31:36,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-22 02:31:36,106 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) Word has length 51 [2022-11-22 02:31:36,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:36,114 INFO L225 Difference]: With dead ends: 1163 [2022-11-22 02:31:36,115 INFO L226 Difference]: Without dead ends: 827 [2022-11-22 02:31:36,118 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:31:36,120 INFO L413 NwaCegarLoop]: 337 mSDtfsCounter, 1181 mSDsluCounter, 583 mSDsCounter, 0 mSdLazyCounter, 1494 mSolverCounterSat, 423 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1241 SdHoareTripleChecker+Valid, 920 SdHoareTripleChecker+Invalid, 1917 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 423 IncrementalHoareTripleChecker+Valid, 1494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:36,121 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1241 Valid, 920 Invalid, 1917 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [423 Valid, 1494 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2022-11-22 02:31:36,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 827 states. [2022-11-22 02:31:36,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 827 to 740. [2022-11-22 02:31:36,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 740 states, 524 states have (on average 1.6278625954198473) internal successors, (853), 554 states have internal predecessors, (853), 177 states have call successors, (177), 37 states have call predecessors, (177), 38 states have return successors, (179), 161 states have call predecessors, (179), 172 states have call successors, (179) [2022-11-22 02:31:36,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 740 states to 740 states and 1209 transitions. [2022-11-22 02:31:36,212 INFO L78 Accepts]: Start accepts. Automaton has 740 states and 1209 transitions. Word has length 51 [2022-11-22 02:31:36,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:36,212 INFO L495 AbstractCegarLoop]: Abstraction has 740 states and 1209 transitions. [2022-11-22 02:31:36,213 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.0) internal successors, (30), 6 states have internal predecessors, (30), 5 states have call successors, (10), 4 states have call predecessors, (10), 2 states have return successors, (9), 5 states have call predecessors, (9), 4 states have call successors, (9) [2022-11-22 02:31:36,214 INFO L276 IsEmpty]: Start isEmpty. Operand 740 states and 1209 transitions. [2022-11-22 02:31:36,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2022-11-22 02:31:36,221 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:36,222 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:36,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-22 02:31:36,223 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:36,233 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:36,233 INFO L85 PathProgramCache]: Analyzing trace with hash 1548976327, now seen corresponding path program 1 times [2022-11-22 02:31:36,234 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:36,234 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [227538191] [2022-11-22 02:31:36,234 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:36,235 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:36,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:36,753 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:36,754 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:36,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [227538191] [2022-11-22 02:31:36,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [227538191] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:36,756 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:36,756 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:31:36,756 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1558093850] [2022-11-22 02:31:36,756 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:36,757 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:31:36,758 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:36,760 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:31:36,760 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:31:36,761 INFO L87 Difference]: Start difference. First operand 740 states and 1209 transitions. Second operand has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:31:39,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:39,587 INFO L93 Difference]: Finished difference Result 2506 states and 4147 transitions. [2022-11-22 02:31:39,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-11-22 02:31:39,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) Word has length 73 [2022-11-22 02:31:39,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:39,603 INFO L225 Difference]: With dead ends: 2506 [2022-11-22 02:31:39,604 INFO L226 Difference]: Without dead ends: 1790 [2022-11-22 02:31:39,610 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2022-11-22 02:31:39,611 INFO L413 NwaCegarLoop]: 389 mSDtfsCounter, 1646 mSDsluCounter, 1331 mSDsCounter, 0 mSdLazyCounter, 2554 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1709 SdHoareTripleChecker+Valid, 1720 SdHoareTripleChecker+Invalid, 3080 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 2554 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.5s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:39,612 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1709 Valid, 1720 Invalid, 3080 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [526 Valid, 2554 Invalid, 0 Unknown, 0 Unchecked, 2.5s Time] [2022-11-22 02:31:39,615 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1790 states. [2022-11-22 02:31:39,785 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1790 to 1703. [2022-11-22 02:31:39,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1703 states, 1236 states have (on average 1.6472491909385114) internal successors, (2036), 1296 states have internal predecessors, (2036), 379 states have call successors, (379), 76 states have call predecessors, (379), 87 states have return successors, (406), 354 states have call predecessors, (406), 374 states have call successors, (406) [2022-11-22 02:31:39,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1703 states to 1703 states and 2821 transitions. [2022-11-22 02:31:39,804 INFO L78 Accepts]: Start accepts. Automaton has 1703 states and 2821 transitions. Word has length 73 [2022-11-22 02:31:39,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:39,805 INFO L495 AbstractCegarLoop]: Abstraction has 1703 states and 2821 transitions. [2022-11-22 02:31:39,805 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 6.285714285714286) internal successors, (44), 7 states have internal predecessors, (44), 5 states have call successors, (14), 3 states have call predecessors, (14), 3 states have return successors, (13), 5 states have call predecessors, (13), 4 states have call successors, (13) [2022-11-22 02:31:39,806 INFO L276 IsEmpty]: Start isEmpty. Operand 1703 states and 2821 transitions. [2022-11-22 02:31:39,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 78 [2022-11-22 02:31:39,809 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:39,809 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:39,809 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-22 02:31:39,809 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:39,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:39,810 INFO L85 PathProgramCache]: Analyzing trace with hash 1645507638, now seen corresponding path program 1 times [2022-11-22 02:31:39,810 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:39,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1399703227] [2022-11-22 02:31:39,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:39,811 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:39,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:40,067 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:40,067 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:40,067 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1399703227] [2022-11-22 02:31:40,068 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1399703227] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:40,068 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:40,068 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-22 02:31:40,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [859699115] [2022-11-22 02:31:40,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:40,069 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-22 02:31:40,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:40,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-22 02:31:40,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:31:40,070 INFO L87 Difference]: Start difference. First operand 1703 states and 2821 transitions. Second operand has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 02:31:40,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:40,337 INFO L93 Difference]: Finished difference Result 2741 states and 4549 transitions. [2022-11-22 02:31:40,337 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:31:40,338 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) Word has length 77 [2022-11-22 02:31:40,339 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:40,351 INFO L225 Difference]: With dead ends: 2741 [2022-11-22 02:31:40,352 INFO L226 Difference]: Without dead ends: 1743 [2022-11-22 02:31:40,358 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-22 02:31:40,369 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 7 mSDsluCounter, 1579 mSDsCounter, 0 mSdLazyCounter, 161 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 2117 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 161 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:40,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 2117 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 161 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-22 02:31:40,374 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1743 states. [2022-11-22 02:31:40,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1743 to 1727. [2022-11-22 02:31:40,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1727 states, 1254 states have (on average 1.6379585326953747) internal successors, (2054), 1314 states have internal predecessors, (2054), 379 states have call successors, (379), 76 states have call predecessors, (379), 93 states have return successors, (418), 360 states have call predecessors, (418), 374 states have call successors, (418) [2022-11-22 02:31:40,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1727 states to 1727 states and 2851 transitions. [2022-11-22 02:31:40,511 INFO L78 Accepts]: Start accepts. Automaton has 1727 states and 2851 transitions. Word has length 77 [2022-11-22 02:31:40,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:40,512 INFO L495 AbstractCegarLoop]: Abstraction has 1727 states and 2851 transitions. [2022-11-22 02:31:40,512 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.2) internal successors, (46), 4 states have internal predecessors, (46), 2 states have call successors, (15), 2 states have call predecessors, (15), 3 states have return successors, (14), 3 states have call predecessors, (14), 2 states have call successors, (14) [2022-11-22 02:31:40,512 INFO L276 IsEmpty]: Start isEmpty. Operand 1727 states and 2851 transitions. [2022-11-22 02:31:40,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2022-11-22 02:31:40,515 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:40,515 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:40,515 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-22 02:31:40,516 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:40,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:40,516 INFO L85 PathProgramCache]: Analyzing trace with hash -465866647, now seen corresponding path program 1 times [2022-11-22 02:31:40,517 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:40,517 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [378154524] [2022-11-22 02:31:40,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:40,517 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:40,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:40,920 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:40,920 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:40,920 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [378154524] [2022-11-22 02:31:40,920 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [378154524] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:40,921 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:40,921 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:31:40,921 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125024723] [2022-11-22 02:31:40,921 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:40,922 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:31:40,922 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:40,922 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:31:40,923 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:31:40,923 INFO L87 Difference]: Start difference. First operand 1727 states and 2851 transitions. Second operand has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-22 02:31:44,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:44,345 INFO L93 Difference]: Finished difference Result 4741 states and 7847 transitions. [2022-11-22 02:31:44,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-22 02:31:44,346 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) Word has length 80 [2022-11-22 02:31:44,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:44,408 INFO L225 Difference]: With dead ends: 4741 [2022-11-22 02:31:44,408 INFO L226 Difference]: Without dead ends: 3037 [2022-11-22 02:31:44,418 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-22 02:31:44,423 INFO L413 NwaCegarLoop]: 509 mSDtfsCounter, 1284 mSDsluCounter, 1485 mSDsCounter, 0 mSdLazyCounter, 4182 mSolverCounterSat, 647 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1352 SdHoareTripleChecker+Valid, 1994 SdHoareTripleChecker+Invalid, 4829 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 647 IncrementalHoareTripleChecker+Valid, 4182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:44,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1352 Valid, 1994 Invalid, 4829 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [647 Valid, 4182 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-22 02:31:44,428 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3037 states. [2022-11-22 02:31:44,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3037 to 2832. [2022-11-22 02:31:44,672 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2832 states, 2025 states have (on average 1.6246913580246913) internal successors, (3290), 2128 states have internal predecessors, (3290), 660 states have call successors, (660), 112 states have call predecessors, (660), 146 states have return successors, (725), 636 states have call predecessors, (725), 655 states have call successors, (725) [2022-11-22 02:31:44,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2832 states to 2832 states and 4675 transitions. [2022-11-22 02:31:44,694 INFO L78 Accepts]: Start accepts. Automaton has 2832 states and 4675 transitions. Word has length 80 [2022-11-22 02:31:44,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:44,694 INFO L495 AbstractCegarLoop]: Abstraction has 2832 states and 4675 transitions. [2022-11-22 02:31:44,695 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 5 states have call successors, (15), 3 states have call predecessors, (15), 3 states have return successors, (14), 5 states have call predecessors, (14), 4 states have call successors, (14) [2022-11-22 02:31:44,695 INFO L276 IsEmpty]: Start isEmpty. Operand 2832 states and 4675 transitions. [2022-11-22 02:31:44,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2022-11-22 02:31:44,698 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:44,699 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:44,699 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-22 02:31:44,699 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:44,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:44,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1283813090, now seen corresponding path program 1 times [2022-11-22 02:31:44,700 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:44,700 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [433567208] [2022-11-22 02:31:44,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:44,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:44,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:45,147 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:45,148 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:45,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [433567208] [2022-11-22 02:31:45,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [433567208] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:45,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:45,149 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-22 02:31:45,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [702637049] [2022-11-22 02:31:45,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:45,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-22 02:31:45,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:45,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-22 02:31:45,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:31:45,151 INFO L87 Difference]: Start difference. First operand 2832 states and 4675 transitions. Second operand has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-22 02:31:47,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:47,879 INFO L93 Difference]: Finished difference Result 7042 states and 11647 transitions. [2022-11-22 02:31:47,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-22 02:31:47,880 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) Word has length 81 [2022-11-22 02:31:47,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:47,912 INFO L225 Difference]: With dead ends: 7042 [2022-11-22 02:31:47,912 INFO L226 Difference]: Without dead ends: 4725 [2022-11-22 02:31:47,926 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:31:47,927 INFO L413 NwaCegarLoop]: 517 mSDtfsCounter, 1969 mSDsluCounter, 877 mSDsCounter, 0 mSdLazyCounter, 2262 mSolverCounterSat, 796 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2117 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 3058 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 796 IncrementalHoareTripleChecker+Valid, 2262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:47,927 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2117 Valid, 1394 Invalid, 3058 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [796 Valid, 2262 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2022-11-22 02:31:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4725 states. [2022-11-22 02:31:48,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4725 to 4590. [2022-11-22 02:31:48,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4590 states, 3214 states have (on average 1.5821406347230864) internal successors, (5085), 3395 states have internal predecessors, (5085), 1116 states have call successors, (1116), 199 states have call predecessors, (1116), 259 states have return successors, (1252), 1073 states have call predecessors, (1252), 1111 states have call successors, (1252) [2022-11-22 02:31:48,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4590 states to 4590 states and 7453 transitions. [2022-11-22 02:31:48,335 INFO L78 Accepts]: Start accepts. Automaton has 4590 states and 7453 transitions. Word has length 81 [2022-11-22 02:31:48,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:48,337 INFO L495 AbstractCegarLoop]: Abstraction has 4590 states and 7453 transitions. [2022-11-22 02:31:48,337 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 6.25) internal successors, (50), 8 states have internal predecessors, (50), 6 states have call successors, (15), 4 states have call predecessors, (15), 3 states have return successors, (14), 7 states have call predecessors, (14), 5 states have call successors, (14) [2022-11-22 02:31:48,337 INFO L276 IsEmpty]: Start isEmpty. Operand 4590 states and 7453 transitions. [2022-11-22 02:31:48,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2022-11-22 02:31:48,343 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:48,343 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:48,343 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-22 02:31:48,344 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:48,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:48,344 INFO L85 PathProgramCache]: Analyzing trace with hash -700043480, now seen corresponding path program 1 times [2022-11-22 02:31:48,344 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:48,345 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1316156499] [2022-11-22 02:31:48,345 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:48,345 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:48,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:48,997 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:31:48,998 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:48,998 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1316156499] [2022-11-22 02:31:48,998 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1316156499] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:48,998 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:48,998 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-11-22 02:31:48,999 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641020345] [2022-11-22 02:31:48,999 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:48,999 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-11-22 02:31:48,999 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:49,000 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-11-22 02:31:49,000 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2022-11-22 02:31:49,001 INFO L87 Difference]: Start difference. First operand 4590 states and 7453 transitions. Second operand has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-22 02:31:53,689 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:53,689 INFO L93 Difference]: Finished difference Result 9423 states and 15539 transitions. [2022-11-22 02:31:53,691 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2022-11-22 02:31:53,693 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) Word has length 84 [2022-11-22 02:31:53,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:53,721 INFO L225 Difference]: With dead ends: 9423 [2022-11-22 02:31:53,722 INFO L226 Difference]: Without dead ends: 4808 [2022-11-22 02:31:53,746 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 217 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=161, Invalid=895, Unknown=0, NotChecked=0, Total=1056 [2022-11-22 02:31:53,747 INFO L413 NwaCegarLoop]: 502 mSDtfsCounter, 2051 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 5626 mSolverCounterSat, 1169 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2069 SdHoareTripleChecker+Valid, 3264 SdHoareTripleChecker+Invalid, 6795 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1169 IncrementalHoareTripleChecker+Valid, 5626 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:53,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2069 Valid, 3264 Invalid, 6795 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1169 Valid, 5626 Invalid, 0 Unknown, 0 Unchecked, 3.8s Time] [2022-11-22 02:31:53,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4808 states. [2022-11-22 02:31:54,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4808 to 4626. [2022-11-22 02:31:54,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4626 states, 3239 states have (on average 1.54492127199753) internal successors, (5004), 3420 states have internal predecessors, (5004), 1121 states have call successors, (1121), 205 states have call predecessors, (1121), 265 states have return successors, (1257), 1077 states have call predecessors, (1257), 1116 states have call successors, (1257) [2022-11-22 02:31:54,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4626 states to 4626 states and 7382 transitions. [2022-11-22 02:31:54,217 INFO L78 Accepts]: Start accepts. Automaton has 4626 states and 7382 transitions. Word has length 84 [2022-11-22 02:31:54,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:54,219 INFO L495 AbstractCegarLoop]: Abstraction has 4626 states and 7382 transitions. [2022-11-22 02:31:54,220 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 6 states have call successors, (15), 3 states have call predecessors, (15), 5 states have return successors, (14), 6 states have call predecessors, (14), 6 states have call successors, (14) [2022-11-22 02:31:54,221 INFO L276 IsEmpty]: Start isEmpty. Operand 4626 states and 7382 transitions. [2022-11-22 02:31:54,225 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2022-11-22 02:31:54,225 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:54,226 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:54,226 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-22 02:31:54,226 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:54,227 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:54,227 INFO L85 PathProgramCache]: Analyzing trace with hash -2127766921, now seen corresponding path program 1 times [2022-11-22 02:31:54,227 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:54,227 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980441365] [2022-11-22 02:31:54,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:54,227 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:54,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:54,666 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-22 02:31:54,666 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:54,666 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980441365] [2022-11-22 02:31:54,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980441365] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:54,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:54,667 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-22 02:31:54,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [306010289] [2022-11-22 02:31:54,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:54,668 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-22 02:31:54,668 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:54,669 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-22 02:31:54,669 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-22 02:31:54,669 INFO L87 Difference]: Start difference. First operand 4626 states and 7382 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 02:31:57,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:57,104 INFO L93 Difference]: Finished difference Result 9171 states and 14674 transitions. [2022-11-22 02:31:57,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-22 02:31:57,105 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) Word has length 86 [2022-11-22 02:31:57,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:57,136 INFO L225 Difference]: With dead ends: 9171 [2022-11-22 02:31:57,137 INFO L226 Difference]: Without dead ends: 5174 [2022-11-22 02:31:57,156 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-22 02:31:57,157 INFO L413 NwaCegarLoop]: 372 mSDtfsCounter, 931 mSDsluCounter, 1215 mSDsCounter, 0 mSdLazyCounter, 2357 mSolverCounterSat, 382 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1001 SdHoareTripleChecker+Valid, 1587 SdHoareTripleChecker+Invalid, 2739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 382 IncrementalHoareTripleChecker+Valid, 2357 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:57,158 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1001 Valid, 1587 Invalid, 2739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [382 Valid, 2357 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-22 02:31:57,164 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5174 states. [2022-11-22 02:31:57,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5174 to 4716. [2022-11-22 02:31:57,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4716 states, 3299 states have (on average 1.5392543194907549) internal successors, (5078), 3494 states have internal predecessors, (5078), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-11-22 02:31:57,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4716 states to 4716 states and 7496 transitions. [2022-11-22 02:31:57,612 INFO L78 Accepts]: Start accepts. Automaton has 4716 states and 7496 transitions. Word has length 86 [2022-11-22 02:31:57,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:57,613 INFO L495 AbstractCegarLoop]: Abstraction has 4716 states and 7496 transitions. [2022-11-22 02:31:57,613 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (16), 3 states have call predecessors, (16), 3 states have return successors, (15), 5 states have call predecessors, (15), 3 states have call successors, (15) [2022-11-22 02:31:57,613 INFO L276 IsEmpty]: Start isEmpty. Operand 4716 states and 7496 transitions. [2022-11-22 02:31:57,615 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-22 02:31:57,616 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:57,616 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:57,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-22 02:31:57,616 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:57,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:57,617 INFO L85 PathProgramCache]: Analyzing trace with hash -1965610984, now seen corresponding path program 1 times [2022-11-22 02:31:57,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:57,617 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102347621] [2022-11-22 02:31:57,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:57,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:57,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:57,873 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:31:57,873 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:57,873 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102347621] [2022-11-22 02:31:57,873 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102347621] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:57,874 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:57,874 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-22 02:31:57,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829304384] [2022-11-22 02:31:57,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:57,875 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-22 02:31:57,875 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:57,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-22 02:31:57,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-22 02:31:57,876 INFO L87 Difference]: Start difference. First operand 4716 states and 7496 transitions. Second operand has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:31:58,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:31:58,719 INFO L93 Difference]: Finished difference Result 4818 states and 7662 transitions. [2022-11-22 02:31:58,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-22 02:31:58,720 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 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 [2022-11-22 02:31:58,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:31:58,754 INFO L225 Difference]: With dead ends: 4818 [2022-11-22 02:31:58,754 INFO L226 Difference]: Without dead ends: 4803 [2022-11-22 02:31:58,758 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2022-11-22 02:31:58,760 INFO L413 NwaCegarLoop]: 525 mSDtfsCounter, 653 mSDsluCounter, 864 mSDsCounter, 0 mSdLazyCounter, 305 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 654 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 327 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-22 02:31:58,760 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [654 Valid, 1389 Invalid, 327 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 305 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-22 02:31:58,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4803 states. [2022-11-22 02:31:59,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4803 to 4722. [2022-11-22 02:31:59,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4722 states, 3305 states have (on average 1.5382753403933433) internal successors, (5084), 3500 states have internal predecessors, (5084), 1123 states have call successors, (1123), 221 states have call predecessors, (1123), 293 states have return successors, (1295), 1077 states have call predecessors, (1295), 1118 states have call successors, (1295) [2022-11-22 02:31:59,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4722 states to 4722 states and 7502 transitions. [2022-11-22 02:31:59,193 INFO L78 Accepts]: Start accepts. Automaton has 4722 states and 7502 transitions. Word has length 93 [2022-11-22 02:31:59,196 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:31:59,196 INFO L495 AbstractCegarLoop]: Abstraction has 4722 states and 7502 transitions. [2022-11-22 02:31:59,197 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 8.833333333333334) internal successors, (53), 6 states have internal predecessors, (53), 3 states have call successors, (18), 2 states have call predecessors, (18), 2 states have return successors, (17), 3 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-22 02:31:59,197 INFO L276 IsEmpty]: Start isEmpty. Operand 4722 states and 7502 transitions. [2022-11-22 02:31:59,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 96 [2022-11-22 02:31:59,200 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:31:59,201 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:31:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-22 02:31:59,201 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:31:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:31:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash 1156870582, now seen corresponding path program 1 times [2022-11-22 02:31:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:31:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2079901141] [2022-11-22 02:31:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:31:59,203 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:31:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:31:59,770 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-22 02:31:59,771 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:31:59,771 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2079901141] [2022-11-22 02:31:59,771 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2079901141] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:31:59,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:31:59,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-22 02:31:59,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277633548] [2022-11-22 02:31:59,772 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:31:59,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-22 02:31:59,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:31:59,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-22 02:31:59,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-22 02:31:59,773 INFO L87 Difference]: Start difference. First operand 4722 states and 7502 transitions. Second operand has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-22 02:32:05,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:32:05,452 INFO L93 Difference]: Finished difference Result 5298 states and 8396 transitions. [2022-11-22 02:32:05,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-22 02:32:05,453 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 95 [2022-11-22 02:32:05,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:32:05,475 INFO L225 Difference]: With dead ends: 5298 [2022-11-22 02:32:05,475 INFO L226 Difference]: Without dead ends: 5281 [2022-11-22 02:32:05,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 713 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-22 02:32:05,479 INFO L413 NwaCegarLoop]: 521 mSDtfsCounter, 2576 mSDsluCounter, 3182 mSDsCounter, 0 mSdLazyCounter, 7236 mSolverCounterSat, 1454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2599 SdHoareTripleChecker+Valid, 3703 SdHoareTripleChecker+Invalid, 8690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1454 IncrementalHoareTripleChecker+Valid, 7236 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-22 02:32:05,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2599 Valid, 3703 Invalid, 8690 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1454 Valid, 7236 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-22 02:32:05,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5281 states. [2022-11-22 02:32:05,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5281 to 5004. [2022-11-22 02:32:05,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5004 states, 3531 states have (on average 1.5465873690172756) internal successors, (5461), 3724 states have internal predecessors, (5461), 1142 states have call successors, (1142), 259 states have call predecessors, (1142), 330 states have return successors, (1318), 1097 states have call predecessors, (1318), 1137 states have call successors, (1318) [2022-11-22 02:32:05,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5004 states to 5004 states and 7921 transitions. [2022-11-22 02:32:05,884 INFO L78 Accepts]: Start accepts. Automaton has 5004 states and 7921 transitions. Word has length 95 [2022-11-22 02:32:05,884 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:32:05,884 INFO L495 AbstractCegarLoop]: Abstraction has 5004 states and 7921 transitions. [2022-11-22 02:32:05,884 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 5.090909090909091) internal successors, (56), 11 states have internal predecessors, (56), 5 states have call successors, (18), 3 states have call predecessors, (18), 5 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-22 02:32:05,885 INFO L276 IsEmpty]: Start isEmpty. Operand 5004 states and 7921 transitions. [2022-11-22 02:32:05,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-22 02:32:05,890 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:32:05,890 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-22 02:32:05,890 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-22 02:32:05,890 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:32:05,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:32:05,891 INFO L85 PathProgramCache]: Analyzing trace with hash -967463117, now seen corresponding path program 1 times [2022-11-22 02:32:05,891 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:32:05,892 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [593776061] [2022-11-22 02:32:05,892 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:05,892 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:32:05,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:07,045 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-22 02:32:07,046 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:32:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [593776061] [2022-11-22 02:32:07,046 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [593776061] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-22 02:32:07,046 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [681722491] [2022-11-22 02:32:07,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:32:07,047 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-22 02:32:07,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 [2022-11-22 02:32:07,054 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-22 02:32:07,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-22 02:32:07,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:32:07,523 INFO L263 TraceCheckSpWp]: Trace formula consists of 2044 conjuncts, 30 conjunts are in the unsatisfiable core [2022-11-22 02:32:07,543 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-22 02:32:09,867 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-22 02:32:09,868 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-22 02:32:14,008 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-22 02:32:14,008 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [681722491] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-22 02:32:14,008 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [2078375770] [2022-11-22 02:32:14,032 INFO L159 IcfgInterpreter]: Started Sifa with 93 locations of interest [2022-11-22 02:32:14,032 INFO L166 IcfgInterpreter]: Building call graph [2022-11-22 02:32:14,036 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-22 02:32:14,042 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-22 02:32:14,042 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-22 02:32:21,135 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-22 02:33:29,043 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-22 02:33:35,580 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-22 02:33:35,659 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-22 02:33:39,347 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__weight with input of size 577 for LOIs [2022-11-22 02:33:41,246 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 89 for LOIs [2022-11-22 02:33:41,505 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 52 for LOIs [2022-11-22 02:33:41,521 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 450 for LOIs [2022-11-22 02:33:41,793 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 85 for LOIs [2022-11-22 02:33:41,925 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 103 for LOIs [2022-11-22 02:33:41,945 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-22 02:33:44,630 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-22 02:35:09,746 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-22 02:35:10,282 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-22 02:35:29,732 WARN L233 SmtUtils]: Spent 10.97s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:41,511 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:49,744 WARN L233 SmtUtils]: Spent 7.90s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:35:58,127 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:36:19,069 WARN L233 SmtUtils]: Spent 20.42s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:36:39,411 WARN L233 SmtUtils]: Spent 19.06s on a formula simplification. DAG size of input: 912 DAG size of output: 813 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:37:17,144 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 634 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:37:23,663 WARN L233 SmtUtils]: Spent 6.02s on a formula simplification. DAG size of input: 634 DAG size of output: 605 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:37:56,399 WARN L233 SmtUtils]: Spent 11.37s on a formula simplification. DAG size of input: 533 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:38:08,252 WARN L233 SmtUtils]: Spent 11.18s on a formula simplification. DAG size of input: 545 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:38:20,223 WARN L233 SmtUtils]: Spent 11.26s on a formula simplification. DAG size of input: 547 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:38:32,265 WARN L233 SmtUtils]: Spent 11.29s on a formula simplification. DAG size of input: 549 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:38:44,363 WARN L233 SmtUtils]: Spent 11.33s on a formula simplification. DAG size of input: 551 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:38:56,497 WARN L233 SmtUtils]: Spent 11.36s on a formula simplification. DAG size of input: 553 DAG size of output: 498 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:08,600 WARN L233 SmtUtils]: Spent 11.31s on a formula simplification. DAG size of input: 555 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:20,723 WARN L233 SmtUtils]: Spent 11.38s on a formula simplification. DAG size of input: 526 DAG size of output: 490 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:32,552 WARN L233 SmtUtils]: Spent 11.11s on a formula simplification. DAG size of input: 528 DAG size of output: 489 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:44,506 WARN L233 SmtUtils]: Spent 11.21s on a formula simplification. DAG size of input: 531 DAG size of output: 492 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:39:54,795 WARN L233 SmtUtils]: Spent 8.84s on a formula simplification. DAG size of input: 450 DAG size of output: 437 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:04,380 WARN L233 SmtUtils]: Spent 8.93s on a formula simplification. DAG size of input: 454 DAG size of output: 441 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:17,040 WARN L233 SmtUtils]: Spent 11.82s on a formula simplification. DAG size of input: 540 DAG size of output: 496 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:28,753 WARN L233 SmtUtils]: Spent 10.88s on a formula simplification. DAG size of input: 540 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:41,705 WARN L233 SmtUtils]: Spent 12.05s on a formula simplification. DAG size of input: 543 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:40:54,087 WARN L233 SmtUtils]: Spent 11.51s on a formula simplification. DAG size of input: 546 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:06,690 WARN L233 SmtUtils]: Spent 11.66s on a formula simplification. DAG size of input: 552 DAG size of output: 499 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:19,660 WARN L233 SmtUtils]: Spent 11.96s on a formula simplification. DAG size of input: 568 DAG size of output: 509 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:19,666 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [2078375770] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:41:19,666 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-22 02:41:19,666 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [63] imperfect sequences [11, 12, 12] total 90 [2022-11-22 02:41:19,667 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1242524909] [2022-11-22 02:41:19,667 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:41:19,667 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 64 states [2022-11-22 02:41:19,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:41:19,668 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 64 interpolants. [2022-11-22 02:41:19,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=614, Invalid=7396, Unknown=0, NotChecked=0, Total=8010 [2022-11-22 02:41:19,672 INFO L87 Difference]: Start difference. First operand 5004 states and 7921 transitions. Second operand has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-22 02:41:29,815 WARN L233 SmtUtils]: Spent 9.30s on a formula simplification. DAG size of input: 646 DAG size of output: 600 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:39,707 WARN L233 SmtUtils]: Spent 9.41s on a formula simplification. DAG size of input: 658 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:47,300 WARN L233 SmtUtils]: Spent 6.93s on a formula simplification. DAG size of input: 752 DAG size of output: 647 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:41:55,663 WARN L233 SmtUtils]: Spent 7.29s on a formula simplification. DAG size of input: 609 DAG size of output: 563 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:03,524 WARN L233 SmtUtils]: Spent 7.44s on a formula simplification. DAG size of input: 621 DAG size of output: 570 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:20,296 WARN L233 SmtUtils]: Spent 10.65s on a formula simplification. DAG size of input: 810 DAG size of output: 584 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:27,062 WARN L233 SmtUtils]: Spent 5.51s on a formula simplification. DAG size of input: 615 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:33,757 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 610 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:39,848 WARN L233 SmtUtils]: Spent 5.70s on a formula simplification. DAG size of input: 622 DAG size of output: 607 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:42:46,849 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification. DAG size of input: 657 DAG size of output: 629 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:30,240 WARN L233 SmtUtils]: Spent 8.29s on a formula simplification. DAG size of input: 444 DAG size of output: 439 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:43:38,987 WARN L233 SmtUtils]: Spent 8.47s on a formula simplification. DAG size of input: 457 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-22 02:45:05,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-22 02:45:05,609 INFO L93 Difference]: Finished difference Result 11803 states and 18745 transitions. [2022-11-22 02:45:05,610 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-22 02:45:05,610 INFO L78 Accepts]: Start accepts. Automaton has has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) Word has length 102 [2022-11-22 02:45:05,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-22 02:45:05,645 INFO L225 Difference]: With dead ends: 11803 [2022-11-22 02:45:05,645 INFO L226 Difference]: Without dead ends: 6826 [2022-11-22 02:45:05,669 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 333 GetRequests, 226 SyntacticMatches, 6 SemanticMatches, 101 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3923 ImplicationChecksByTransitivity, 469.6s TimeCoverageRelationStatistics Valid=770, Invalid=9736, Unknown=0, NotChecked=0, Total=10506 [2022-11-22 02:45:05,670 INFO L413 NwaCegarLoop]: 747 mSDtfsCounter, 1097 mSDsluCounter, 8543 mSDsCounter, 0 mSdLazyCounter, 25110 mSolverCounterSat, 170 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 120.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1132 SdHoareTripleChecker+Valid, 9290 SdHoareTripleChecker+Invalid, 25280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.3s SdHoareTripleChecker+Time, 170 IncrementalHoareTripleChecker+Valid, 25110 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 123.8s IncrementalHoareTripleChecker+Time [2022-11-22 02:45:05,670 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1132 Valid, 9290 Invalid, 25280 Unknown, 0 Unchecked, 0.3s Time], IncrementalHoareTripleChecker [170 Valid, 25110 Invalid, 0 Unknown, 0 Unchecked, 123.8s Time] [2022-11-22 02:45:05,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6826 states. [2022-11-22 02:45:07,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6826 to 6691. [2022-11-22 02:45:07,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6691 states, 4739 states have (on average 1.5503270732221988) internal successors, (7347), 4996 states have internal predecessors, (7347), 1522 states have call successors, (1522), 343 states have call predecessors, (1522), 429 states have return successors, (1733), 1461 states have call predecessors, (1733), 1517 states have call successors, (1733) [2022-11-22 02:45:07,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6691 states to 6691 states and 10602 transitions. [2022-11-22 02:45:07,831 INFO L78 Accepts]: Start accepts. Automaton has 6691 states and 10602 transitions. Word has length 102 [2022-11-22 02:45:07,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-22 02:45:07,831 INFO L495 AbstractCegarLoop]: Abstraction has 6691 states and 10602 transitions. [2022-11-22 02:45:07,832 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 64 states, 52 states have (on average 1.1538461538461537) internal successors, (60), 41 states have internal predecessors, (60), 18 states have call successors, (19), 13 states have call predecessors, (19), 13 states have return successors, (18), 18 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-22 02:45:07,832 INFO L276 IsEmpty]: Start isEmpty. Operand 6691 states and 10602 transitions. [2022-11-22 02:45:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2022-11-22 02:45:07,835 INFO L187 NwaCegarLoop]: Found error trace [2022-11-22 02:45:07,835 INFO L195 NwaCegarLoop]: trace histogram [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] [2022-11-22 02:45:07,846 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-11-22 02:45:08,045 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2447be16-ddb1-429e-a4fb-32ca001e4c6b/bin/utaipan-g80aRyZoba/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2022-11-22 02:45:08,045 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-22 02:45:08,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-22 02:45:08,045 INFO L85 PathProgramCache]: Analyzing trace with hash 750314356, now seen corresponding path program 1 times [2022-11-22 02:45:08,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-22 02:45:08,046 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [154120430] [2022-11-22 02:45:08,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-22 02:45:08,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-22 02:45:08,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-22 02:45:08,668 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-22 02:45:08,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-22 02:45:08,669 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [154120430] [2022-11-22 02:45:08,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [154120430] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-22 02:45:08,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-22 02:45:08,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-22 02:45:08,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60430457] [2022-11-22 02:45:08,670 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-22 02:45:08,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-22 02:45:08,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-22 02:45:08,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-22 02:45:08,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-22 02:45:08,671 INFO L87 Difference]: Start difference. First operand 6691 states and 10602 transitions. Second operand has 9 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 6 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (19), 7 states have call predecessors, (19), 5 states have call successors, (19)