./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 8393723b Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS --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 f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- 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-8393723 [2022-11-19 07:51:30,959 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-19 07:51:30,961 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-19 07:51:30,990 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-19 07:51:30,993 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-19 07:51:30,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-19 07:51:31,003 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-19 07:51:31,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-19 07:51:31,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-19 07:51:31,022 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-19 07:51:31,024 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-19 07:51:31,026 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-19 07:51:31,027 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-19 07:51:31,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-19 07:51:31,033 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-19 07:51:31,035 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-19 07:51:31,037 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-19 07:51:31,039 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-19 07:51:31,041 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-19 07:51:31,046 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-19 07:51:31,052 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-19 07:51:31,054 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-19 07:51:31,058 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-19 07:51:31,060 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-19 07:51:31,068 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-19 07:51:31,068 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-19 07:51:31,069 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-19 07:51:31,071 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-19 07:51:31,072 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-19 07:51:31,073 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-19 07:51:31,074 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-19 07:51:31,076 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-19 07:51:31,078 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-19 07:51:31,080 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-19 07:51:31,081 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-19 07:51:31,082 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-19 07:51:31,083 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-19 07:51:31,083 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-19 07:51:31,083 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-19 07:51:31,085 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-19 07:51:31,086 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-19 07:51:31,087 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-19 07:51:31,132 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-19 07:51:31,132 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-19 07:51:31,133 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-19 07:51:31,133 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-19 07:51:31,134 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-19 07:51:31,134 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-19 07:51:31,135 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-19 07:51:31,135 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-19 07:51:31,135 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-19 07:51:31,136 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-19 07:51:31,136 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-19 07:51:31,136 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-19 07:51:31,136 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-19 07:51:31,137 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-19 07:51:31,137 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-19 07:51:31,137 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-19 07:51:31,138 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-19 07:51:31,138 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-19 07:51:31,139 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-19 07:51:31,139 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-19 07:51:31,140 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-19 07:51:31,140 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-19 07:51:31,140 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-19 07:51:31,140 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-19 07:51:31,141 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-19 07:51:31,141 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-19 07:51:31,141 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-19 07:51:31,142 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-19 07:51:31,142 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-19 07:51:31,142 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-19 07:51:31,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-19 07:51:31,143 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-19 07:51:31,143 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:31,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-19 07:51:31,144 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-19 07:51:31,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-19 07:51:31,144 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-19 07:51:31,145 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-19 07:51:31,145 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-19 07:51:31,145 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-19 07:51:31,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-19 07:51:31,146 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_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2022-11-19 07:51:31,550 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-19 07:51:31,580 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-19 07:51:31,583 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-19 07:51:31,584 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-19 07:51:31,585 INFO L275 PluginConnector]: CDTParser initialized [2022-11-19 07:51:31,586 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-11-19 07:51:31,665 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/data/0e353fcfb/8882e7cf324b4089b72d4a6186f91cd0/FLAG3c421d323 [2022-11-19 07:51:32,504 INFO L306 CDTParser]: Found 1 translation units. [2022-11-19 07:51:32,505 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-11-19 07:51:32,527 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/data/0e353fcfb/8882e7cf324b4089b72d4a6186f91cd0/FLAG3c421d323 [2022-11-19 07:51:32,543 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/data/0e353fcfb/8882e7cf324b4089b72d4a6186f91cd0 [2022-11-19 07:51:32,545 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-19 07:51:32,547 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-19 07:51:32,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:32,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-19 07:51:32,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-19 07:51:32,554 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:32" (1/1) ... [2022-11-19 07:51:32,555 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b7b719 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:32, skipping insertion in model container [2022-11-19 07:51:32,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:32" (1/1) ... [2022-11-19 07:51:32,564 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-19 07:51:32,624 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-19 07:51:33,074 WARN L234 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_70f3b091-dea9-484a-a111-c1e3b1c7219a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-11-19 07:51:33,343 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:33,357 INFO L203 MainTranslator]: Completed pre-run [2022-11-19 07:51:33,432 WARN L234 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_70f3b091-dea9-484a-a111-c1e3b1c7219a/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-11-19 07:51:33,493 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-19 07:51:33,517 INFO L208 MainTranslator]: Completed translation [2022-11-19 07:51:33,518 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33 WrapperNode [2022-11-19 07:51:33,518 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-19 07:51:33,519 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:33,520 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-19 07:51:33,520 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-19 07:51:33,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,565 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,636 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 865 [2022-11-19 07:51:33,637 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-19 07:51:33,638 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-19 07:51:33,638 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-19 07:51:33,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-19 07:51:33,648 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,655 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,660 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,668 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,734 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,738 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,742 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-19 07:51:33,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-19 07:51:33,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-19 07:51:33,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-19 07:51:33,752 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (1/1) ... [2022-11-19 07:51:33,778 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-19 07:51:33,791 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:51:33,812 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-19 07:51:33,851 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-19 07:51:33,866 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-19 07:51:33,867 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-19 07:51:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-19 07:51:33,867 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-19 07:51:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-19 07:51:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-19 07:51:33,868 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-19 07:51:33,868 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-19 07:51:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-19 07:51:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-19 07:51:33,869 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-19 07:51:33,869 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-19 07:51:33,870 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-19 07:51:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-19 07:51:33,870 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-19 07:51:33,870 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-19 07:51:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-19 07:51:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-19 07:51:33,871 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-19 07:51:33,871 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-19 07:51:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-19 07:51:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-19 07:51:33,872 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-19 07:51:33,872 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-19 07:51:33,873 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-19 07:51:33,873 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-19 07:51:33,873 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-19 07:51:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-19 07:51:33,874 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-19 07:51:33,874 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-19 07:51:33,876 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-19 07:51:33,876 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-19 07:51:33,876 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-19 07:51:33,877 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-19 07:51:33,877 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-19 07:51:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-19 07:51:33,878 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-19 07:51:33,878 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-19 07:51:33,878 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-19 07:51:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-19 07:51:33,879 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-19 07:51:33,879 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-19 07:51:33,880 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-19 07:51:33,880 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-19 07:51:33,881 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-19 07:51:33,882 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-19 07:51:33,883 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-19 07:51:33,883 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-19 07:51:33,884 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-19 07:51:33,884 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-19 07:51:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:51:33,885 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-19 07:51:33,885 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-19 07:51:33,886 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-19 07:51:33,886 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-19 07:51:33,886 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-19 07:51:34,103 INFO L235 CfgBuilder]: Building ICFG [2022-11-19 07:51:34,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-19 07:51:35,549 INFO L276 CfgBuilder]: Performing block encoding [2022-11-19 07:51:36,445 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-19 07:51:36,445 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-19 07:51:36,450 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:36 BoogieIcfgContainer [2022-11-19 07:51:36,450 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-19 07:51:36,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-19 07:51:36,452 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-19 07:51:36,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-19 07:51:36,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:32" (1/3) ... [2022-11-19 07:51:36,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc5194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:36, skipping insertion in model container [2022-11-19 07:51:36,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:33" (2/3) ... [2022-11-19 07:51:36,459 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ddc5194 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:36, skipping insertion in model container [2022-11-19 07:51:36,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:36" (3/3) ... [2022-11-19 07:51:36,460 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2022-11-19 07:51:36,481 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-19 07:51:36,481 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-19 07:51:36,591 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-19 07:51:36,600 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;@22ad7173, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-19 07:51:36,601 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-19 07:51:36,611 INFO L276 IsEmpty]: Start isEmpty. Operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) [2022-11-19 07:51:36,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-19 07:51:36,629 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:36,630 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:36,631 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:36,639 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:36,639 INFO L85 PathProgramCache]: Analyzing trace with hash 258275901, now seen corresponding path program 1 times [2022-11-19 07:51:36,651 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:36,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1608366162] [2022-11-19 07:51:36,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:36,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:37,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:37,913 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:51:37,914 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:37,915 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1608366162] [2022-11-19 07:51:37,915 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1608366162] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:37,916 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:37,916 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:51:37,918 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1641111059] [2022-11-19 07:51:37,919 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:37,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:51:37,926 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:37,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:51:37,969 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:51:37,973 INFO L87 Difference]: Start difference. First operand has 390 states, 261 states have (on average 1.5862068965517242) internal successors, (414), 284 states have internal predecessors, (414), 101 states have call successors, (101), 26 states have call predecessors, (101), 26 states have return successors, (101), 94 states have call predecessors, (101), 101 states have call successors, (101) Second operand has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-19 07:51:40,826 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:40,827 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-11-19 07:51:40,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-19 07:51:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) Word has length 54 [2022-11-19 07:51:40,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:40,864 INFO L225 Difference]: With dead ends: 1260 [2022-11-19 07:51:40,864 INFO L226 Difference]: Without dead ends: 887 [2022-11-19 07:51:40,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:51:40,876 INFO L413 NwaCegarLoop]: 359 mSDtfsCounter, 1242 mSDsluCounter, 760 mSDsCounter, 0 mSdLazyCounter, 1669 mSolverCounterSat, 456 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1309 SdHoareTripleChecker+Valid, 1119 SdHoareTripleChecker+Invalid, 2125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 456 IncrementalHoareTripleChecker+Valid, 1669 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:40,877 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1309 Valid, 1119 Invalid, 2125 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [456 Valid, 1669 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:51:40,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-19 07:51:41,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-11-19 07:51:41,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 800 states, 561 states have (on average 1.6007130124777185) internal successors, (898), 591 states have internal predecessors, (898), 193 states have call successors, (193), 44 states have call predecessors, (193), 45 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2022-11-19 07:51:41,020 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-11-19 07:51:41,022 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-11-19 07:51:41,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:41,023 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-11-19 07:51:41,023 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 5.166666666666667) internal successors, (31), 6 states have internal predecessors, (31), 6 states have call successors, (11), 4 states have call predecessors, (11), 2 states have return successors, (10), 5 states have call predecessors, (10), 5 states have call successors, (10) [2022-11-19 07:51:41,023 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-11-19 07:51:41,034 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-19 07:51:41,034 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:41,034 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, 1, 1, 1] [2022-11-19 07:51:41,035 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-19 07:51:41,035 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:41,036 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:41,036 INFO L85 PathProgramCache]: Analyzing trace with hash -1581585000, now seen corresponding path program 1 times [2022-11-19 07:51:41,037 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:41,037 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78928105] [2022-11-19 07:51:41,037 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:41,038 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:41,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:42,016 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:51:42,018 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:42,018 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78928105] [2022-11-19 07:51:42,019 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78928105] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:42,019 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:42,019 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-19 07:51:42,019 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1417725162] [2022-11-19 07:51:42,020 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:42,022 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-19 07:51:42,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:42,022 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-19 07:51:42,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-19 07:51:42,023 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:51:48,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:48,723 INFO L93 Difference]: Finished difference Result 3325 states and 5449 transitions. [2022-11-19 07:51:48,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-19 07:51:48,724 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2022-11-19 07:51:48,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:48,764 INFO L225 Difference]: With dead ends: 3325 [2022-11-19 07:51:48,764 INFO L226 Difference]: Without dead ends: 2548 [2022-11-19 07:51:48,774 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 07:51:48,782 INFO L413 NwaCegarLoop]: 567 mSDtfsCounter, 2559 mSDsluCounter, 3622 mSDsCounter, 0 mSdLazyCounter, 8041 mSolverCounterSat, 2148 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2591 SdHoareTripleChecker+Valid, 4189 SdHoareTripleChecker+Invalid, 10189 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2148 IncrementalHoareTripleChecker+Valid, 8041 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:48,783 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2591 Valid, 4189 Invalid, 10189 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2148 Valid, 8041 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-19 07:51:48,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-11-19 07:51:49,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1806. [2022-11-19 07:51:49,043 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1236 states have (on average 1.564724919093851) internal successors, (1934), 1308 states have internal predecessors, (1934), 474 states have call successors, (474), 83 states have call predecessors, (474), 95 states have return successors, (493), 447 states have call predecessors, (493), 469 states have call successors, (493) [2022-11-19 07:51:49,060 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2901 transitions. [2022-11-19 07:51:49,061 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2901 transitions. Word has length 87 [2022-11-19 07:51:49,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:49,064 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2901 transitions. [2022-11-19 07:51:49,064 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-19 07:51:49,064 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2901 transitions. [2022-11-19 07:51:49,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-19 07:51:49,075 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:49,076 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, 1, 1, 1] [2022-11-19 07:51:49,077 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-19 07:51:49,077 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:49,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:49,088 INFO L85 PathProgramCache]: Analyzing trace with hash 225082816, now seen corresponding path program 1 times [2022-11-19 07:51:49,088 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:49,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [617613391] [2022-11-19 07:51:49,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:49,089 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:49,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:49,668 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:51:49,668 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:49,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [617613391] [2022-11-19 07:51:49,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [617613391] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:49,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:49,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-19 07:51:49,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022511574] [2022-11-19 07:51:49,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:49,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-19 07:51:49,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:49,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-19 07:51:49,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:51:49,671 INFO L87 Difference]: Start difference. First operand 1806 states and 2901 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-19 07:51:53,209 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:53,209 INFO L93 Difference]: Finished difference Result 5061 states and 8162 transitions. [2022-11-19 07:51:53,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-19 07:51:53,210 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) Word has length 89 [2022-11-19 07:51:53,212 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:53,233 INFO L225 Difference]: With dead ends: 5061 [2022-11-19 07:51:53,233 INFO L226 Difference]: Without dead ends: 3280 [2022-11-19 07:51:53,244 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=115, Invalid=437, Unknown=0, NotChecked=0, Total=552 [2022-11-19 07:51:53,252 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1752 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4025 mSolverCounterSat, 606 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4631 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 606 IncrementalHoareTripleChecker+Valid, 4025 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.0s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:53,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 2610 Invalid, 4631 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [606 Valid, 4025 Invalid, 0 Unknown, 0 Unchecked, 3.0s Time] [2022-11-19 07:51:53,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2022-11-19 07:51:53,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3118. [2022-11-19 07:51:53,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 2210 states have (on average 1.5886877828054298) internal successors, (3511), 2301 states have internal predecessors, (3511), 732 states have call successors, (732), 145 states have call predecessors, (732), 175 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2022-11-19 07:51:53,550 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 5038 transitions. [2022-11-19 07:51:53,551 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 5038 transitions. Word has length 89 [2022-11-19 07:51:53,552 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:53,552 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 5038 transitions. [2022-11-19 07:51:53,552 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-19 07:51:53,553 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 5038 transitions. [2022-11-19 07:51:53,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:51:53,558 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:53,558 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:53,558 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-19 07:51:53,558 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:53,559 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:53,559 INFO L85 PathProgramCache]: Analyzing trace with hash -2121845223, now seen corresponding path program 1 times [2022-11-19 07:51:53,560 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:53,560 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1593539935] [2022-11-19 07:51:53,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:53,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:53,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:53,938 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:51:53,938 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:53,938 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1593539935] [2022-11-19 07:51:53,939 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1593539935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:53,939 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:53,939 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:51:53,939 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744367884] [2022-11-19 07:51:53,939 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:53,941 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:51:53,941 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:53,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:51:53,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:53,942 INFO L87 Difference]: Start difference. First operand 3118 states and 5038 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:54,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:54,360 INFO L93 Difference]: Finished difference Result 5565 states and 9010 transitions. [2022-11-19 07:51:54,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:51:54,363 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-19 07:51:54,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:54,387 INFO L225 Difference]: With dead ends: 5565 [2022-11-19 07:51:54,387 INFO L226 Difference]: Without dead ends: 3230 [2022-11-19 07:51:54,402 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:54,411 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:54,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:51:54,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2022-11-19 07:51:54,722 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3188. [2022-11-19 07:51:54,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2260 states have (on average 1.5756637168141594) internal successors, (3561), 2351 states have internal predecessors, (3561), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-19 07:51:54,759 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5138 transitions. [2022-11-19 07:51:54,759 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5138 transitions. Word has length 94 [2022-11-19 07:51:54,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:54,762 INFO L495 AbstractCegarLoop]: Abstraction has 3188 states and 5138 transitions. [2022-11-19 07:51:54,762 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:54,763 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5138 transitions. [2022-11-19 07:51:54,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-19 07:51:54,773 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:54,773 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, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:54,773 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-19 07:51:54,774 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:54,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:54,774 INFO L85 PathProgramCache]: Analyzing trace with hash -915832120, now seen corresponding path program 1 times [2022-11-19 07:51:54,775 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:54,775 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740168060] [2022-11-19 07:51:54,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:54,775 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:54,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:55,139 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:51:55,139 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:55,140 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740168060] [2022-11-19 07:51:55,140 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740168060] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:55,140 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:55,140 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:51:55,140 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1964931071] [2022-11-19 07:51:55,140 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:55,141 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:51:55,141 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:55,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:51:55,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:55,142 INFO L87 Difference]: Start difference. First operand 3188 states and 5138 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:55,583 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:55,583 INFO L93 Difference]: Finished difference Result 5671 states and 9150 transitions. [2022-11-19 07:51:55,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:51:55,584 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 93 [2022-11-19 07:51:55,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:55,607 INFO L225 Difference]: With dead ends: 5671 [2022-11-19 07:51:55,607 INFO L226 Difference]: Without dead ends: 3280 [2022-11-19 07:51:55,620 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:55,623 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:55,624 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:51:55,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2022-11-19 07:51:55,913 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3198. [2022-11-19 07:51:55,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2270 states have (on average 1.5731277533039647) internal successors, (3571), 2351 states have internal predecessors, (3571), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-19 07:51:55,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 5148 transitions. [2022-11-19 07:51:55,938 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 5148 transitions. Word has length 93 [2022-11-19 07:51:55,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:55,938 INFO L495 AbstractCegarLoop]: Abstraction has 3198 states and 5148 transitions. [2022-11-19 07:51:55,939 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:55,939 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 5148 transitions. [2022-11-19 07:51:55,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-19 07:51:55,942 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:55,942 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, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:55,942 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-19 07:51:55,942 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:55,943 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:55,943 INFO L85 PathProgramCache]: Analyzing trace with hash 2054709305, now seen corresponding path program 1 times [2022-11-19 07:51:55,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:55,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [310875165] [2022-11-19 07:51:55,944 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:55,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:55,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:56,292 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:51:56,292 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:56,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [310875165] [2022-11-19 07:51:56,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [310875165] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:56,292 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:56,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:51:56,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [941760529] [2022-11-19 07:51:56,293 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:56,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:51:56,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:56,295 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:51:56,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:56,295 INFO L87 Difference]: Start difference. First operand 3198 states and 5148 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:56,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:51:56,736 INFO L93 Difference]: Finished difference Result 5689 states and 9168 transitions. [2022-11-19 07:51:56,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-19 07:51:56,738 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) Word has length 94 [2022-11-19 07:51:56,739 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:51:56,760 INFO L225 Difference]: With dead ends: 5689 [2022-11-19 07:51:56,760 INFO L226 Difference]: Without dead ends: 3290 [2022-11-19 07:51:56,772 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:51:56,774 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 2829 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:51:56,774 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 3404 Invalid, 257 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-19 07:51:56,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2022-11-19 07:51:56,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3208. [2022-11-19 07:51:57,001 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 2280 states have (on average 1.5706140350877194) internal successors, (3581), 2351 states have internal predecessors, (3581), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-19 07:51:57,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5158 transitions. [2022-11-19 07:51:57,019 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5158 transitions. Word has length 94 [2022-11-19 07:51:57,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:51:57,020 INFO L495 AbstractCegarLoop]: Abstraction has 3208 states and 5158 transitions. [2022-11-19 07:51:57,021 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-19 07:51:57,021 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5158 transitions. [2022-11-19 07:51:57,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-19 07:51:57,024 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:51:57,024 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:51:57,025 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-19 07:51:57,025 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:51:57,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:51:57,025 INFO L85 PathProgramCache]: Analyzing trace with hash -1713274016, now seen corresponding path program 1 times [2022-11-19 07:51:57,026 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:51:57,026 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [432278829] [2022-11-19 07:51:57,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:51:57,026 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:51:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:51:57,620 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:51:57,621 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:51:57,621 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [432278829] [2022-11-19 07:51:57,621 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [432278829] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:51:57,621 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:51:57,621 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:51:57,622 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107590423] [2022-11-19 07:51:57,622 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:51:57,622 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:51:57,622 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:51:57,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:51:57,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:51:57,626 INFO L87 Difference]: Start difference. First operand 3208 states and 5158 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-19 07:52:00,567 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:00,568 INFO L93 Difference]: Finished difference Result 8008 states and 12960 transitions. [2022-11-19 07:52:00,568 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-19 07:52:00,568 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 97 [2022-11-19 07:52:00,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:00,604 INFO L225 Difference]: With dead ends: 8008 [2022-11-19 07:52:00,605 INFO L226 Difference]: Without dead ends: 5359 [2022-11-19 07:52:00,624 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 [2022-11-19 07:52:00,625 INFO L413 NwaCegarLoop]: 554 mSDtfsCounter, 1997 mSDsluCounter, 851 mSDsCounter, 0 mSdLazyCounter, 2369 mSolverCounterSat, 877 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2162 SdHoareTripleChecker+Valid, 1405 SdHoareTripleChecker+Invalid, 3246 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 877 IncrementalHoareTripleChecker+Valid, 2369 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:00,626 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2162 Valid, 1405 Invalid, 3246 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [877 Valid, 2369 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-19 07:52:00,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2022-11-19 07:52:01,074 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5220. [2022-11-19 07:52:01,099 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 3635 states have (on average 1.5323246217331499) internal successors, (5570), 3776 states have internal predecessors, (5570), 1246 states have call successors, (1246), 258 states have call predecessors, (1246), 338 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2022-11-19 07:52:01,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 8282 transitions. [2022-11-19 07:52:01,127 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 8282 transitions. Word has length 97 [2022-11-19 07:52:01,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:01,128 INFO L495 AbstractCegarLoop]: Abstraction has 5220 states and 8282 transitions. [2022-11-19 07:52:01,129 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-19 07:52:01,129 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 8282 transitions. [2022-11-19 07:52:01,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-19 07:52:01,133 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:01,133 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:01,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-19 07:52:01,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:01,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:01,134 INFO L85 PathProgramCache]: Analyzing trace with hash 89626848, now seen corresponding path program 1 times [2022-11-19 07:52:01,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:01,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1512332935] [2022-11-19 07:52:01,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:01,135 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:01,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:01,719 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:52:01,719 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:01,719 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1512332935] [2022-11-19 07:52:01,719 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1512332935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:01,720 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:01,720 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 07:52:01,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946523173] [2022-11-19 07:52:01,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:01,720 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:52:01,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:01,721 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:52:01,721 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:52:01,722 INFO L87 Difference]: Start difference. First operand 5220 states and 8282 transitions. Second operand has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-19 07:52:07,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:07,304 INFO L93 Difference]: Finished difference Result 10943 states and 17682 transitions. [2022-11-19 07:52:07,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-19 07:52:07,305 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 100 [2022-11-19 07:52:07,306 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:07,342 INFO L225 Difference]: With dead ends: 10943 [2022-11-19 07:52:07,343 INFO L226 Difference]: Without dead ends: 6194 [2022-11-19 07:52:07,373 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2022-11-19 07:52:07,374 INFO L413 NwaCegarLoop]: 538 mSDtfsCounter, 2279 mSDsluCounter, 4038 mSDsCounter, 0 mSdLazyCounter, 7399 mSolverCounterSat, 1270 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2297 SdHoareTripleChecker+Valid, 4576 SdHoareTripleChecker+Invalid, 8669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1270 IncrementalHoareTripleChecker+Valid, 7399 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:07,374 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2297 Valid, 4576 Invalid, 8669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1270 Valid, 7399 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-19 07:52:07,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-11-19 07:52:07,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6000. [2022-11-19 07:52:07,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4352 states have (on average 1.5415900735294117) internal successors, (6709), 4513 states have internal predecessors, (6709), 1269 states have call successors, (1269), 278 states have call predecessors, (1269), 378 states have return successors, (1489), 1285 states have call predecessors, (1489), 1264 states have call successors, (1489) [2022-11-19 07:52:07,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 9467 transitions. [2022-11-19 07:52:07,936 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 9467 transitions. Word has length 100 [2022-11-19 07:52:07,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:07,937 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 9467 transitions. [2022-11-19 07:52:07,938 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-19 07:52:07,938 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 9467 transitions. [2022-11-19 07:52:07,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-19 07:52:07,940 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:07,941 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:07,941 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-19 07:52:07,941 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:07,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:07,942 INFO L85 PathProgramCache]: Analyzing trace with hash 1011991307, now seen corresponding path program 1 times [2022-11-19 07:52:07,942 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:07,942 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46513523] [2022-11-19 07:52:07,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:07,942 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:07,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:08,284 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:52:08,284 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:08,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46513523] [2022-11-19 07:52:08,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46513523] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:08,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:08,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:52:08,285 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [977099014] [2022-11-19 07:52:08,285 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:08,286 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:52:08,286 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:08,287 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:52:08,287 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:52:08,287 INFO L87 Difference]: Start difference. First operand 6000 states and 9467 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:52:12,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:12,167 INFO L93 Difference]: Finished difference Result 19284 states and 31114 transitions. [2022-11-19 07:52:12,167 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-19 07:52:12,167 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) Word has length 101 [2022-11-19 07:52:12,168 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:12,260 INFO L225 Difference]: With dead ends: 19284 [2022-11-19 07:52:12,260 INFO L226 Difference]: Without dead ends: 13309 [2022-11-19 07:52:12,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2022-11-19 07:52:12,293 INFO L413 NwaCegarLoop]: 539 mSDtfsCounter, 2194 mSDsluCounter, 992 mSDsCounter, 0 mSdLazyCounter, 2767 mSolverCounterSat, 951 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2272 SdHoareTripleChecker+Valid, 1531 SdHoareTripleChecker+Invalid, 3718 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 951 IncrementalHoareTripleChecker+Valid, 2767 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:12,294 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2272 Valid, 1531 Invalid, 3718 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [951 Valid, 2767 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-19 07:52:12,308 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13309 states. [2022-11-19 07:52:13,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13309 to 12082. [2022-11-19 07:52:13,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12082 states, 8740 states have (on average 1.5322654462242562) internal successors, (13392), 9106 states have internal predecessors, (13392), 2570 states have call successors, (2570), 566 states have call predecessors, (2570), 771 states have return successors, (3232), 2605 states have call predecessors, (3232), 2565 states have call successors, (3232) [2022-11-19 07:52:13,656 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12082 states to 12082 states and 19194 transitions. [2022-11-19 07:52:13,657 INFO L78 Accepts]: Start accepts. Automaton has 12082 states and 19194 transitions. Word has length 101 [2022-11-19 07:52:13,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:13,658 INFO L495 AbstractCegarLoop]: Abstraction has 12082 states and 19194 transitions. [2022-11-19 07:52:13,658 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-19 07:52:13,662 INFO L276 IsEmpty]: Start isEmpty. Operand 12082 states and 19194 transitions. [2022-11-19 07:52:13,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-19 07:52:13,665 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:13,665 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:13,666 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-19 07:52:13,666 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:13,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:13,667 INFO L85 PathProgramCache]: Analyzing trace with hash 1167525085, now seen corresponding path program 1 times [2022-11-19 07:52:13,667 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:13,667 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [129928211] [2022-11-19 07:52:13,667 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:13,667 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:13,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-19 07:52:14,094 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:14,094 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [129928211] [2022-11-19 07:52:14,094 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [129928211] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:14,094 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:14,094 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-19 07:52:14,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [224350200] [2022-11-19 07:52:14,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:14,095 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-19 07:52:14,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:14,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-19 07:52:14,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-19 07:52:14,096 INFO L87 Difference]: Start difference. First operand 12082 states and 19194 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 07:52:17,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:17,052 INFO L93 Difference]: Finished difference Result 23745 states and 37932 transitions. [2022-11-19 07:52:17,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-19 07:52:17,052 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2022-11-19 07:52:17,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:17,254 INFO L225 Difference]: With dead ends: 23745 [2022-11-19 07:52:17,254 INFO L226 Difference]: Without dead ends: 13222 [2022-11-19 07:52:17,301 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 [2022-11-19 07:52:17,302 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1006 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2564 mSolverCounterSat, 411 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1082 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2975 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 411 IncrementalHoareTripleChecker+Valid, 2564 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:17,303 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1082 Valid, 1677 Invalid, 2975 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [411 Valid, 2564 Invalid, 0 Unknown, 0 Unchecked, 1.9s Time] [2022-11-19 07:52:17,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2022-11-19 07:52:18,558 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 12268. [2022-11-19 07:52:18,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12268 states, 8864 states have (on average 1.5279783393501805) internal successors, (13544), 9258 states have internal predecessors, (13544), 2574 states have call successors, (2574), 598 states have call predecessors, (2574), 829 states have return successors, (3310), 2607 states have call predecessors, (3310), 2569 states have call successors, (3310) [2022-11-19 07:52:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 19428 transitions. [2022-11-19 07:52:18,641 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 19428 transitions. Word has length 103 [2022-11-19 07:52:18,642 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:18,642 INFO L495 AbstractCegarLoop]: Abstraction has 12268 states and 19428 transitions. [2022-11-19 07:52:18,642 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-19 07:52:18,642 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 19428 transitions. [2022-11-19 07:52:18,645 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-19 07:52:18,646 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:18,646 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:18,646 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-19 07:52:18,646 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:18,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:18,647 INFO L85 PathProgramCache]: Analyzing trace with hash -1250478809, now seen corresponding path program 1 times [2022-11-19 07:52:18,647 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:18,647 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [973813091] [2022-11-19 07:52:18,648 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:18,648 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:18,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:18,964 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:52:18,965 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:18,965 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [973813091] [2022-11-19 07:52:18,965 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [973813091] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:18,965 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:18,965 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-19 07:52:18,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [500123279] [2022-11-19 07:52:18,966 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:18,967 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-19 07:52:18,967 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:18,968 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-19 07:52:18,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-19 07:52:18,969 INFO L87 Difference]: Start difference. First operand 12268 states and 19428 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:52:20,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:20,680 INFO L93 Difference]: Finished difference Result 12394 states and 19637 transitions. [2022-11-19 07:52:20,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-19 07:52:20,681 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) Word has length 106 [2022-11-19 07:52:20,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:20,763 INFO L225 Difference]: With dead ends: 12394 [2022-11-19 07:52:20,764 INFO L226 Difference]: Without dead ends: 12379 [2022-11-19 07:52:20,775 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 [2022-11-19 07:52:20,776 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 669 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 576 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:20,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 1872 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-11-19 07:52:20,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12379 states. [2022-11-19 07:52:21,796 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12379 to 12276. [2022-11-19 07:52:21,809 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12276 states, 8872 states have (on average 1.527502254283138) internal successors, (13552), 9266 states have internal predecessors, (13552), 2574 states have call successors, (2574), 598 states have call predecessors, (2574), 829 states have return successors, (3310), 2607 states have call predecessors, (3310), 2569 states have call successors, (3310) [2022-11-19 07:52:21,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12276 states to 12276 states and 19436 transitions. [2022-11-19 07:52:21,876 INFO L78 Accepts]: Start accepts. Automaton has 12276 states and 19436 transitions. Word has length 106 [2022-11-19 07:52:21,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:21,876 INFO L495 AbstractCegarLoop]: Abstraction has 12276 states and 19436 transitions. [2022-11-19 07:52:21,877 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-19 07:52:21,877 INFO L276 IsEmpty]: Start isEmpty. Operand 12276 states and 19436 transitions. [2022-11-19 07:52:21,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-19 07:52:21,880 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:21,880 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:21,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-19 07:52:21,881 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:21,881 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:21,881 INFO L85 PathProgramCache]: Analyzing trace with hash 550466159, now seen corresponding path program 1 times [2022-11-19 07:52:21,882 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:21,882 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1702513497] [2022-11-19 07:52:21,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:21,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:21,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:22,516 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:52:22,516 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:22,517 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1702513497] [2022-11-19 07:52:22,517 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1702513497] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:22,517 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:22,517 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-19 07:52:22,518 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667356210] [2022-11-19 07:52:22,518 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:22,518 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-19 07:52:22,518 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:22,519 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-19 07:52:22,519 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:52:22,519 INFO L87 Difference]: Start difference. First operand 12276 states and 19436 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-19 07:52:29,833 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:29,834 INFO L93 Difference]: Finished difference Result 13396 states and 21181 transitions. [2022-11-19 07:52:29,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-19 07:52:29,834 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2022-11-19 07:52:29,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:29,904 INFO L225 Difference]: With dead ends: 13396 [2022-11-19 07:52:29,904 INFO L226 Difference]: Without dead ends: 13379 [2022-11-19 07:52:29,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-19 07:52:29,913 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2750 mSDsluCounter, 3400 mSDsCounter, 0 mSdLazyCounter, 7887 mSolverCounterSat, 1556 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2776 SdHoareTripleChecker+Valid, 3956 SdHoareTripleChecker+Invalid, 9443 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1556 IncrementalHoareTripleChecker+Valid, 7887 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.2s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:29,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2776 Valid, 3956 Invalid, 9443 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1556 Valid, 7887 Invalid, 0 Unknown, 0 Unchecked, 5.2s Time] [2022-11-19 07:52:29,924 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13379 states. [2022-11-19 07:52:30,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13379 to 12848. [2022-11-19 07:52:30,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12848 states, 9326 states have (on average 1.5337765387089857) internal successors, (14304), 9716 states have internal predecessors, (14304), 2610 states have call successors, (2610), 681 states have call predecessors, (2610), 911 states have return successors, (3357), 2646 states have call predecessors, (3357), 2605 states have call successors, (3357) [2022-11-19 07:52:30,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12848 states to 12848 states and 20271 transitions. [2022-11-19 07:52:30,965 INFO L78 Accepts]: Start accepts. Automaton has 12848 states and 20271 transitions. Word has length 112 [2022-11-19 07:52:30,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:30,966 INFO L495 AbstractCegarLoop]: Abstraction has 12848 states and 20271 transitions. [2022-11-19 07:52:30,966 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-19 07:52:30,966 INFO L276 IsEmpty]: Start isEmpty. Operand 12848 states and 20271 transitions. [2022-11-19 07:52:30,969 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-19 07:52:30,970 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:30,970 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:30,970 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-19 07:52:30,971 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:30,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:30,971 INFO L85 PathProgramCache]: Analyzing trace with hash 1167740981, now seen corresponding path program 1 times [2022-11-19 07:52:30,971 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:30,971 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092929113] [2022-11-19 07:52:30,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:30,972 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:31,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:31,803 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-19 07:52:31,804 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:31,804 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092929113] [2022-11-19 07:52:31,804 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092929113] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:52:31,804 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-19 07:52:31,804 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-19 07:52:31,805 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571682671] [2022-11-19 07:52:31,805 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:52:31,805 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-19 07:52:31,805 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:52:31,806 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-19 07:52:31,806 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-19 07:52:31,806 INFO L87 Difference]: Start difference. First operand 12848 states and 20271 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-19 07:52:38,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-19 07:52:38,048 INFO L93 Difference]: Finished difference Result 36677 states and 58637 transitions. [2022-11-19 07:52:38,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-19 07:52:38,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 118 [2022-11-19 07:52:38,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-19 07:52:38,205 INFO L225 Difference]: With dead ends: 36677 [2022-11-19 07:52:38,205 INFO L226 Difference]: Without dead ends: 23856 [2022-11-19 07:52:38,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-19 07:52:38,269 INFO L413 NwaCegarLoop]: 531 mSDtfsCounter, 2024 mSDsluCounter, 1425 mSDsCounter, 0 mSdLazyCounter, 4057 mSolverCounterSat, 810 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2094 SdHoareTripleChecker+Valid, 1956 SdHoareTripleChecker+Invalid, 4867 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 810 IncrementalHoareTripleChecker+Valid, 4057 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-19 07:52:38,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2094 Valid, 1956 Invalid, 4867 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [810 Valid, 4057 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-19 07:52:38,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23856 states. [2022-11-19 07:52:41,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23856 to 21234. [2022-11-19 07:52:41,125 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21234 states, 15197 states have (on average 1.5409620319799961) internal successors, (23418), 16022 states have internal predecessors, (23418), 4580 states have call successors, (4580), 1069 states have call predecessors, (4580), 1456 states have return successors, (5852), 4450 states have call predecessors, (5852), 4575 states have call successors, (5852) [2022-11-19 07:52:41,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21234 states to 21234 states and 33850 transitions. [2022-11-19 07:52:41,252 INFO L78 Accepts]: Start accepts. Automaton has 21234 states and 33850 transitions. Word has length 118 [2022-11-19 07:52:41,252 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-19 07:52:41,252 INFO L495 AbstractCegarLoop]: Abstraction has 21234 states and 33850 transitions. [2022-11-19 07:52:41,252 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-19 07:52:41,253 INFO L276 IsEmpty]: Start isEmpty. Operand 21234 states and 33850 transitions. [2022-11-19 07:52:41,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-19 07:52:41,258 INFO L187 NwaCegarLoop]: Found error trace [2022-11-19 07:52:41,259 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-19 07:52:41,259 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-19 07:52:41,259 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-19 07:52:41,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-19 07:52:41,260 INFO L85 PathProgramCache]: Analyzing trace with hash 1887082524, now seen corresponding path program 1 times [2022-11-19 07:52:41,260 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-19 07:52:41,260 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1228532724] [2022-11-19 07:52:41,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:41,261 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-19 07:52:41,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:44,059 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-19 07:52:44,059 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-19 07:52:44,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1228532724] [2022-11-19 07:52:44,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1228532724] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-19 07:52:44,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [498268435] [2022-11-19 07:52:44,059 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-19 07:52:44,060 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-19 07:52:44,060 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 [2022-11-19 07:52:44,067 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-19 07:52:44,097 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_70f3b091-dea9-484a-a111-c1e3b1c7219a/bin/utaipan-I9t0OCRTmS/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-19 07:52:44,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-19 07:52:44,612 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-19 07:52:44,624 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-19 07:52:47,526 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-19 07:52:47,526 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-19 07:52:51,176 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-19 07:52:51,178 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [498268435] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-19 07:52:51,178 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [67536220] [2022-11-19 07:52:51,209 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2022-11-19 07:52:51,209 INFO L166 IcfgInterpreter]: Building call graph [2022-11-19 07:52:51,214 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-19 07:52:51,220 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-19 07:52:51,220 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-19 07:52:59,124 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-19 07:54:08,976 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-19 07:54:13,319 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-19 07:54:13,385 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-11-19 07:54:19,537 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-11-19 07:54:20,041 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-11-19 07:54:20,627 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 33 for LOIs [2022-11-19 07:54:20,637 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-11-19 07:54:20,658 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 33 for LOIs [2022-11-19 07:54:20,660 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-19 07:54:24,678 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 461 for LOIs [2022-11-19 07:54:24,982 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-11-19 07:54:25,380 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-19 07:54:25,392 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-19 07:54:28,132 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-19 07:54:57,253 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-19 07:54:57,719 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-19 07:55:03,076 WARN L233 SmtUtils]: Spent 5.05s on a formula simplification. DAG size of input: 528 DAG size of output: 523 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:55:19,804 WARN L233 SmtUtils]: Spent 12.12s 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) [2022-11-19 07:55:32,902 WARN L233 SmtUtils]: Spent 12.53s 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) [2022-11-19 07:55:41,399 WARN L233 SmtUtils]: Spent 8.03s 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) [2022-11-19 07:55:50,665 WARN L233 SmtUtils]: Spent 8.73s 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) [2022-11-19 07:56:13,781 WARN L233 SmtUtils]: Spent 22.34s 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) [2022-11-19 07:56:46,190 WARN L233 SmtUtils]: Spent 30.52s on a formula simplification. DAG size of input: 941 DAG size of output: 791 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:03,013 WARN L233 SmtUtils]: Spent 5.33s on a formula simplification. DAG size of input: 568 DAG size of output: 563 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:29,638 WARN L233 SmtUtils]: Spent 6.74s 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) [2022-11-19 07:57:36,982 WARN L233 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 632 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:44,284 WARN L233 SmtUtils]: Spent 5.06s on a formula simplification. DAG size of input: 577 DAG size of output: 576 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:57:50,089 WARN L233 SmtUtils]: Spent 5.21s on a formula simplification. DAG size of input: 590 DAG size of output: 589 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:33,363 WARN L233 SmtUtils]: Spent 5.84s on a formula simplification. DAG size of input: 537 DAG size of output: 473 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:39,989 WARN L233 SmtUtils]: Spent 5.68s on a formula simplification. DAG size of input: 539 DAG size of output: 476 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:58:46,587 WARN L233 SmtUtils]: Spent 5.64s on a formula simplification. DAG size of input: 542 DAG size of output: 479 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:07,030 WARN L233 SmtUtils]: Spent 7.10s on a formula simplification. DAG size of input: 551 DAG size of output: 507 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:14,225 WARN L233 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 551 DAG size of output: 483 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:21,825 WARN L233 SmtUtils]: Spent 6.51s on a formula simplification. DAG size of input: 554 DAG size of output: 488 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:28,683 WARN L233 SmtUtils]: Spent 5.73s on a formula simplification. DAG size of input: 557 DAG size of output: 487 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:35,553 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 563 DAG size of output: 493 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:42,349 WARN L233 SmtUtils]: Spent 5.71s on a formula simplification. DAG size of input: 579 DAG size of output: 503 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 07:59:42,353 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [67536220] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-19 07:59:42,353 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-19 07:59:42,353 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [22, 12, 12] total 116 [2022-11-19 07:59:42,354 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [558504850] [2022-11-19 07:59:42,354 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-19 07:59:42,355 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-19 07:59:42,355 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-19 07:59:42,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-19 07:59:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=800, Invalid=12540, Unknown=0, NotChecked=0, Total=13340 [2022-11-19 07:59:42,359 INFO L87 Difference]: Start difference. First operand 21234 states and 33850 transitions. Second operand has 79 states, 64 states have (on average 1.125) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-19 07:59:52,802 WARN L233 SmtUtils]: Spent 9.45s 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) [2022-11-19 08:00:02,673 WARN L233 SmtUtils]: Spent 9.31s 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) [2022-11-19 08:00:10,448 WARN L233 SmtUtils]: Spent 6.96s 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) [2022-11-19 08:00:18,827 WARN L233 SmtUtils]: Spent 7.13s 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) [2022-11-19 08:00:26,569 WARN L233 SmtUtils]: Spent 7.21s 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) [2022-11-19 08:00:44,436 WARN L233 SmtUtils]: Spent 11.63s on a formula simplification. DAG size of input: 799 DAG size of output: 584 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:00:57,910 WARN L233 SmtUtils]: Spent 5.28s on a formula simplification. DAG size of input: 603 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:04,256 WARN L233 SmtUtils]: Spent 5.56s on a formula simplification. DAG size of input: 625 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:10,363 WARN L233 SmtUtils]: Spent 5.63s on a formula simplification. DAG size of input: 613 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:16,570 WARN L233 SmtUtils]: Spent 5.75s on a formula simplification. DAG size of input: 623 DAG size of output: 609 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:22,729 WARN L233 SmtUtils]: Spent 5.34s on a formula simplification. DAG size of input: 617 DAG size of output: 610 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:28,789 WARN L233 SmtUtils]: Spent 5.45s on a formula simplification. DAG size of input: 609 DAG size of output: 601 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:34,963 WARN L233 SmtUtils]: Spent 5.72s on a formula simplification. DAG size of input: 621 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:42,054 WARN L233 SmtUtils]: Spent 6.40s on a formula simplification. DAG size of input: 658 DAG size of output: 623 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:49,109 WARN L233 SmtUtils]: Spent 6.42s on a formula simplification. DAG size of input: 656 DAG size of output: 621 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:01:55,942 WARN L233 SmtUtils]: Spent 6.18s on a formula simplification. DAG size of input: 639 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:02:03,014 WARN L233 SmtUtils]: Spent 6.36s on a formula simplification. DAG size of input: 645 DAG size of output: 614 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:02:10,275 WARN L233 SmtUtils]: Spent 6.50s on a formula simplification. DAG size of input: 662 DAG size of output: 624 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:02:17,463 WARN L233 SmtUtils]: Spent 6.54s on a formula simplification. DAG size of input: 667 DAG size of output: 628 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:02:24,881 WARN L233 SmtUtils]: Spent 6.73s on a formula simplification. DAG size of input: 671 DAG size of output: 632 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-19 08:02:32,371 WARN L233 SmtUtils]: Spent 6.83s on a formula simplification. DAG size of input: 673 DAG size of output: 634 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)