./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a 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_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur --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 b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c --- 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-38b53e6 [2022-11-25 23:23:57,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 23:23:57,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 23:23:57,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 23:23:57,694 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 23:23:57,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 23:23:57,701 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 23:23:57,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 23:23:57,707 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 23:23:57,714 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 23:23:57,716 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 23:23:57,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 23:23:57,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 23:23:57,724 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 23:23:57,726 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 23:23:57,729 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 23:23:57,731 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 23:23:57,733 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 23:23:57,735 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 23:23:57,743 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 23:23:57,745 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 23:23:57,748 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 23:23:57,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 23:23:57,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 23:23:57,764 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 23:23:57,765 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 23:23:57,765 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 23:23:57,767 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 23:23:57,768 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 23:23:57,769 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 23:23:57,770 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 23:23:57,771 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 23:23:57,773 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 23:23:57,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 23:23:57,778 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 23:23:57,778 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 23:23:57,779 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 23:23:57,780 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 23:23:57,780 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 23:23:57,781 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 23:23:57,782 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 23:23:57,783 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 23:23:57,832 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 23:23:57,833 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 23:23:57,834 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 23:23:57,834 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 23:23:57,835 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 23:23:57,836 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 23:23:57,836 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 23:23:57,836 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 23:23:57,837 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 23:23:57,837 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 23:23:57,838 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 23:23:57,839 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 23:23:57,839 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 23:23:57,840 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 23:23:57,840 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 23:23:57,840 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 23:23:57,841 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 23:23:57,841 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 23:23:57,842 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 23:23:57,842 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 23:23:57,843 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 23:23:57,843 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 23:23:57,843 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 23:23:57,844 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 23:23:57,844 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 23:23:57,845 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 23:23:57,846 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 23:23:57,846 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 23:23:57,846 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 23:23:57,847 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 23:23:57,847 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 23:23:57,848 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 23:23:57,848 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:23:57,849 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 23:23:57,849 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 23:23:57,849 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 23:23:57,850 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 23:23:57,850 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 23:23:57,850 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 23:23:57,851 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 23:23:57,851 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 23:23:57,852 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_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b5032f6ecc7a7304ce28757cb2a6aad82a2091f27bc978e38426a37817981d0c [2022-11-25 23:23:58,153 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 23:23:58,200 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 23:23:58,216 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 23:23:58,218 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 23:23:58,218 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 23:23:58,220 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-25 23:24:01,826 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 23:24:02,158 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 23:24:02,158 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c [2022-11-25 23:24:02,182 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/data/fd5ef888c/fdf5ef3541fc4f088dd89fc97feea21f/FLAG9a6c0675d [2022-11-25 23:24:02,207 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/data/fd5ef888c/fdf5ef3541fc4f088dd89fc97feea21f [2022-11-25 23:24:02,211 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 23:24:02,213 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 23:24:02,224 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 23:24:02,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 23:24:02,230 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 23:24:02,231 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:24:02" (1/1) ... [2022-11-25 23:24:02,233 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1359bb87 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:02, skipping insertion in model container [2022-11-25 23:24:02,233 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 11:24:02" (1/1) ... [2022-11-25 23:24:02,243 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 23:24:02,344 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 23:24:02,556 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-25 23:24:03,170 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:24:03,189 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 23:24:03,206 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/sv-benchmarks/c/product-lines/elevator_spec1_product30.cil.c[1545,1558] [2022-11-25 23:24:03,358 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 23:24:03,395 INFO L208 MainTranslator]: Completed translation [2022-11-25 23:24:03,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03 WrapperNode [2022-11-25 23:24:03,396 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 23:24:03,398 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 23:24:03,398 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 23:24:03,398 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 23:24:03,408 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,462 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,532 INFO L138 Inliner]: procedures = 95, calls = 348, calls flagged for inlining = 28, calls inlined = 24, statements flattened = 909 [2022-11-25 23:24:03,533 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 23:24:03,541 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 23:24:03,541 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 23:24:03,541 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 23:24:03,551 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,551 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,558 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,559 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,582 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,599 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,614 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,632 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,657 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 23:24:03,658 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 23:24:03,659 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 23:24:03,659 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 23:24:03,660 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (1/1) ... [2022-11-25 23:24:03,668 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 23:24:03,681 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:24:03,698 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 23:24:03,710 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 23:24:03,756 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 23:24:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 23:24:03,757 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 23:24:03,757 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 23:24:03,757 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 23:24:03,758 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-25 23:24:03,758 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-25 23:24:03,758 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 23:24:03,758 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 23:24:03,758 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 23:24:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 23:24:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 23:24:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 23:24:03,759 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 23:24:03,759 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 23:24:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 23:24:03,760 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 23:24:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 23:24:03,760 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 23:24:03,760 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-25 23:24:03,761 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-25 23:24:03,761 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 23:24:03,762 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 23:24:03,762 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 23:24:03,763 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 23:24:03,763 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 23:24:03,764 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 23:24:03,764 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 23:24:03,764 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 23:24:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 23:24:03,765 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 23:24:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 23:24:03,765 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 23:24:03,765 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 23:24:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 23:24:03,766 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 23:24:03,766 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 23:24:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 23:24:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 23:24:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 23:24:03,767 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 23:24:03,767 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 23:24:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 23:24:03,768 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 23:24:03,768 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 23:24:03,769 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 23:24:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 23:24:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 23:24:03,770 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 23:24:03,770 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 23:24:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-25 23:24:03,771 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-25 23:24:03,771 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 23:24:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 23:24:03,772 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 23:24:03,772 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 23:24:04,017 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 23:24:04,020 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 23:24:05,507 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 23:24:06,452 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 23:24:06,452 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-25 23:24:06,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:24:06 BoogieIcfgContainer [2022-11-25 23:24:06,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 23:24:06,458 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 23:24:06,459 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 23:24:06,462 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 23:24:06,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 11:24:02" (1/3) ... [2022-11-25 23:24:06,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5b02bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:24:06, skipping insertion in model container [2022-11-25 23:24:06,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 11:24:03" (2/3) ... [2022-11-25 23:24:06,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2a5b02bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 11:24:06, skipping insertion in model container [2022-11-25 23:24:06,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 11:24:06" (3/3) ... [2022-11-25 23:24:06,465 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product30.cil.c [2022-11-25 23:24:06,484 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 23:24:06,484 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 23:24:06,543 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 23:24:06,554 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;@64cc2945, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 23:24:06,554 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 23:24:06,564 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) [2022-11-25 23:24:06,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-25 23:24:06,592 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:06,593 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] [2022-11-25 23:24:06,594 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:06,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:06,600 INFO L85 PathProgramCache]: Analyzing trace with hash -928472709, now seen corresponding path program 1 times [2022-11-25 23:24:06,610 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:06,611 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2002063750] [2022-11-25 23:24:06,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:06,611 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:07,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:07,923 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:24:07,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:07,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2002063750] [2022-11-25 23:24:07,926 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2002063750] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:07,926 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:07,926 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:24:07,928 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1980049059] [2022-11-25 23:24:07,929 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:07,936 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:24:07,936 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:07,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:24:07,985 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:24:07,988 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) [2022-11-25 23:24:11,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:11,106 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-11-25 23:24:11,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 23:24:11,109 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 [2022-11-25 23:24:11,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:11,148 INFO L225 Difference]: With dead ends: 1260 [2022-11-25 23:24:11,151 INFO L226 Difference]: Without dead ends: 887 [2022-11-25 23:24:11,166 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:24:11,171 INFO L413 NwaCegarLoop]: 355 mSDtfsCounter, 1241 mSDsluCounter, 757 mSDsCounter, 0 mSdLazyCounter, 1668 mSolverCounterSat, 454 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1308 SdHoareTripleChecker+Valid, 1112 SdHoareTripleChecker+Invalid, 2122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 454 IncrementalHoareTripleChecker+Valid, 1668 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:11,172 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1308 Valid, 1112 Invalid, 2122 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [454 Valid, 1668 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-25 23:24:11,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-25 23:24:11,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-11-25 23:24:11,409 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) [2022-11-25 23:24:11,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-11-25 23:24:11,423 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-11-25 23:24:11,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:11,431 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-11-25 23:24:11,431 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) [2022-11-25 23:24:11,432 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-11-25 23:24:11,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-25 23:24:11,446 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:11,447 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] [2022-11-25 23:24:11,448 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 23:24:11,448 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:11,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:11,451 INFO L85 PathProgramCache]: Analyzing trace with hash -1757354683, now seen corresponding path program 1 times [2022-11-25 23:24:11,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:11,452 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1866831662] [2022-11-25 23:24:11,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:11,452 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:11,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:12,000 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:24:12,000 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:12,001 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1866831662] [2022-11-25 23:24:12,001 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1866831662] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:12,002 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:12,002 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-11-25 23:24:12,002 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2049785083] [2022-11-25 23:24:12,002 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:12,005 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 23:24:12,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:12,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 23:24:12,006 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:24:12,007 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:24:12,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:12,465 INFO L93 Difference]: Finished difference Result 1767 states and 2881 transitions. [2022-11-25 23:24:12,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:24:12,466 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) Word has length 87 [2022-11-25 23:24:12,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:12,482 INFO L225 Difference]: With dead ends: 1767 [2022-11-25 23:24:12,482 INFO L226 Difference]: Without dead ends: 991 [2022-11-25 23:24:12,492 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:24:12,496 INFO L413 NwaCegarLoop]: 621 mSDtfsCounter, 177 mSDsluCounter, 1711 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 129 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 177 SdHoareTripleChecker+Valid, 2332 SdHoareTripleChecker+Invalid, 282 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 129 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:12,496 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [177 Valid, 2332 Invalid, 282 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [129 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 23:24:12,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 991 states. [2022-11-25 23:24:12,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 991 to 806. [2022-11-25 23:24:12,589 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 806 states, 567 states have (on average 1.5943562610229276) internal successors, (904), 597 states have internal predecessors, (904), 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) [2022-11-25 23:24:12,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1292 transitions. [2022-11-25 23:24:12,598 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1292 transitions. Word has length 87 [2022-11-25 23:24:12,599 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:12,599 INFO L495 AbstractCegarLoop]: Abstraction has 806 states and 1292 transitions. [2022-11-25 23:24:12,600 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 10.8) internal successors, (54), 5 states have internal predecessors, (54), 2 states have call successors, (16), 2 states have call predecessors, (16), 2 states have return successors, (15), 2 states have call predecessors, (15), 2 states have call successors, (15) [2022-11-25 23:24:12,600 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1292 transitions. [2022-11-25 23:24:12,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2022-11-25 23:24:12,605 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:12,605 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] [2022-11-25 23:24:12,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 23:24:12,606 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:12,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:12,606 INFO L85 PathProgramCache]: Analyzing trace with hash -297931558, now seen corresponding path program 1 times [2022-11-25 23:24:12,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:12,607 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1473782574] [2022-11-25 23:24:12,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:12,607 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:12,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:13,221 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:13,222 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:13,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1473782574] [2022-11-25 23:24:13,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1473782574] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:13,225 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:13,225 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:24:13,225 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915874725] [2022-11-25 23:24:13,226 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:13,226 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:24:13,226 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:13,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:24:13,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:24:13,228 INFO L87 Difference]: Start difference. First operand 806 states and 1292 transitions. Second operand has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:24:17,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:17,654 INFO L93 Difference]: Finished difference Result 2768 states and 4483 transitions. [2022-11-25 23:24:17,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2022-11-25 23:24:17,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) Word has length 88 [2022-11-25 23:24:17,656 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:17,670 INFO L225 Difference]: With dead ends: 2768 [2022-11-25 23:24:17,671 INFO L226 Difference]: Without dead ends: 1985 [2022-11-25 23:24:17,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=84, Invalid=336, Unknown=0, NotChecked=0, Total=420 [2022-11-25 23:24:17,678 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1365 mSDsluCounter, 1609 mSDsCounter, 0 mSdLazyCounter, 4478 mSolverCounterSat, 690 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1440 SdHoareTripleChecker+Valid, 2161 SdHoareTripleChecker+Invalid, 5168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 690 IncrementalHoareTripleChecker+Valid, 4478 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:17,679 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1440 Valid, 2161 Invalid, 5168 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [690 Valid, 4478 Invalid, 0 Unknown, 0 Unchecked, 3.9s Time] [2022-11-25 23:24:17,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1985 states. [2022-11-25 23:24:17,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1985 to 1798. [2022-11-25 23:24:17,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1798 states, 1232 states have (on average 1.5665584415584415) internal successors, (1930), 1304 states have internal predecessors, (1930), 474 states have call successors, (474), 79 states have call predecessors, (474), 91 states have return successors, (493), 447 states have call predecessors, (493), 469 states have call successors, (493) [2022-11-25 23:24:17,918 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1798 states to 1798 states and 2897 transitions. [2022-11-25 23:24:17,918 INFO L78 Accepts]: Start accepts. Automaton has 1798 states and 2897 transitions. Word has length 88 [2022-11-25 23:24:17,919 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:17,919 INFO L495 AbstractCegarLoop]: Abstraction has 1798 states and 2897 transitions. [2022-11-25 23:24:17,919 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 5 states have call successors, (17), 3 states have call predecessors, (17), 3 states have return successors, (16), 5 states have call predecessors, (16), 4 states have call successors, (16) [2022-11-25 23:24:17,919 INFO L276 IsEmpty]: Start isEmpty. Operand 1798 states and 2897 transitions. [2022-11-25 23:24:17,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-25 23:24:17,923 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:17,923 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] [2022-11-25 23:24:17,923 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 23:24:17,924 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:17,924 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:17,924 INFO L85 PathProgramCache]: Analyzing trace with hash 1078003022, now seen corresponding path program 1 times [2022-11-25 23:24:17,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:17,925 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1981584034] [2022-11-25 23:24:17,925 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:17,925 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:18,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:18,585 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:18,586 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:18,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1981584034] [2022-11-25 23:24:18,586 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1981584034] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:18,586 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:18,587 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:24:18,587 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71589937] [2022-11-25 23:24:18,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:18,588 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:24:18,588 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:18,589 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:24:18,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:24:18,589 INFO L87 Difference]: Start difference. First operand 1798 states and 2897 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) [2022-11-25 23:24:22,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:22,899 INFO L93 Difference]: Finished difference Result 5045 states and 8154 transitions. [2022-11-25 23:24:22,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-25 23:24:22,900 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 [2022-11-25 23:24:22,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:22,925 INFO L225 Difference]: With dead ends: 5045 [2022-11-25 23:24:22,925 INFO L226 Difference]: Without dead ends: 3272 [2022-11-25 23:24:22,937 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 [2022-11-25 23:24:22,938 INFO L413 NwaCegarLoop]: 410 mSDtfsCounter, 1752 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 4031 mSolverCounterSat, 604 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1817 SdHoareTripleChecker+Valid, 2610 SdHoareTripleChecker+Invalid, 4635 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 604 IncrementalHoareTripleChecker+Valid, 4031 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.7s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:22,939 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1817 Valid, 2610 Invalid, 4635 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [604 Valid, 4031 Invalid, 0 Unknown, 0 Unchecked, 3.7s Time] [2022-11-25 23:24:22,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-25 23:24:23,261 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3110. [2022-11-25 23:24:23,268 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3110 states, 2206 states have (on average 1.5897552130553037) internal successors, (3507), 2297 states have internal predecessors, (3507), 732 states have call successors, (732), 141 states have call predecessors, (732), 171 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2022-11-25 23:24:23,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3110 states to 3110 states and 5034 transitions. [2022-11-25 23:24:23,292 INFO L78 Accepts]: Start accepts. Automaton has 3110 states and 5034 transitions. Word has length 89 [2022-11-25 23:24:23,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:23,293 INFO L495 AbstractCegarLoop]: Abstraction has 3110 states and 5034 transitions. [2022-11-25 23:24:23,293 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) [2022-11-25 23:24:23,294 INFO L276 IsEmpty]: Start isEmpty. Operand 3110 states and 5034 transitions. [2022-11-25 23:24:23,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 23:24:23,297 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:23,297 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] [2022-11-25 23:24:23,298 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-25 23:24:23,298 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:23,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:23,299 INFO L85 PathProgramCache]: Analyzing trace with hash 161028296, now seen corresponding path program 1 times [2022-11-25 23:24:23,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:23,299 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [144341670] [2022-11-25 23:24:23,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:23,300 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:23,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:23,799 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:23,800 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:23,800 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [144341670] [2022-11-25 23:24:23,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [144341670] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:23,801 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:23,801 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:24:23,801 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [191053000] [2022-11-25 23:24:23,801 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:23,802 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:24:23,802 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:23,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:24:23,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:24:23,803 INFO L87 Difference]: Start difference. First operand 3110 states and 5034 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) [2022-11-25 23:24:24,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:24,264 INFO L93 Difference]: Finished difference Result 5549 states and 9002 transitions. [2022-11-25 23:24:24,264 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:24:24,264 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 [2022-11-25 23:24:24,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:24,298 INFO L225 Difference]: With dead ends: 5549 [2022-11-25 23:24:24,298 INFO L226 Difference]: Without dead ends: 3222 [2022-11-25 23:24:24,310 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 [2022-11-25 23:24:24,315 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:24,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3385 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:24:24,322 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3222 states. [2022-11-25 23:24:24,688 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3222 to 3180. [2022-11-25 23:24:24,698 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3180 states, 2256 states have (on average 1.5766843971631206) internal successors, (3557), 2347 states have internal predecessors, (3557), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-25 23:24:24,719 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3180 states to 3180 states and 5134 transitions. [2022-11-25 23:24:24,720 INFO L78 Accepts]: Start accepts. Automaton has 3180 states and 5134 transitions. Word has length 94 [2022-11-25 23:24:24,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:24,723 INFO L495 AbstractCegarLoop]: Abstraction has 3180 states and 5134 transitions. [2022-11-25 23:24:24,723 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) [2022-11-25 23:24:24,724 INFO L276 IsEmpty]: Start isEmpty. Operand 3180 states and 5134 transitions. [2022-11-25 23:24:24,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-25 23:24:24,729 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:24,730 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] [2022-11-25 23:24:24,730 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-25 23:24:24,730 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:24,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:24,731 INFO L85 PathProgramCache]: Analyzing trace with hash 279441064, now seen corresponding path program 1 times [2022-11-25 23:24:24,731 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:24,732 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [347090838] [2022-11-25 23:24:24,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:24,732 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:24,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:25,167 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:25,168 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:25,168 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [347090838] [2022-11-25 23:24:25,168 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [347090838] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:25,168 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:25,169 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:24:25,169 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348356988] [2022-11-25 23:24:25,169 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:25,169 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:24:25,170 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:25,171 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:24:25,171 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:24:25,171 INFO L87 Difference]: Start difference. First operand 3180 states and 5134 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) [2022-11-25 23:24:25,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:25,637 INFO L93 Difference]: Finished difference Result 5655 states and 9142 transitions. [2022-11-25 23:24:25,637 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:24:25,638 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 [2022-11-25 23:24:25,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:25,661 INFO L225 Difference]: With dead ends: 5655 [2022-11-25 23:24:25,661 INFO L226 Difference]: Without dead ends: 3272 [2022-11-25 23:24:25,674 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 [2022-11-25 23:24:25,675 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 [2022-11-25 23:24:25,675 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] [2022-11-25 23:24:25,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3272 states. [2022-11-25 23:24:26,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3272 to 3190. [2022-11-25 23:24:26,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3190 states, 2266 states have (on average 1.5741394527802295) internal successors, (3567), 2347 states have internal predecessors, (3567), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-25 23:24:26,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3190 states to 3190 states and 5144 transitions. [2022-11-25 23:24:26,059 INFO L78 Accepts]: Start accepts. Automaton has 3190 states and 5144 transitions. Word has length 94 [2022-11-25 23:24:26,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:26,060 INFO L495 AbstractCegarLoop]: Abstraction has 3190 states and 5144 transitions. [2022-11-25 23:24:26,060 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) [2022-11-25 23:24:26,060 INFO L276 IsEmpty]: Start isEmpty. Operand 3190 states and 5144 transitions. [2022-11-25 23:24:26,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-25 23:24:26,064 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:26,064 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] [2022-11-25 23:24:26,064 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-25 23:24:26,064 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:26,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:26,065 INFO L85 PathProgramCache]: Analyzing trace with hash -338251077, now seen corresponding path program 1 times [2022-11-25 23:24:26,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:26,066 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1598937121] [2022-11-25 23:24:26,066 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:26,066 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:26,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:26,524 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:26,524 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:26,524 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1598937121] [2022-11-25 23:24:26,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1598937121] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:26,525 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:26,525 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:24:26,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [676064206] [2022-11-25 23:24:26,525 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:26,526 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:24:26,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:26,526 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:24:26,526 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:24:26,527 INFO L87 Difference]: Start difference. First operand 3190 states and 5144 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) [2022-11-25 23:24:27,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:27,010 INFO L93 Difference]: Finished difference Result 5673 states and 9160 transitions. [2022-11-25 23:24:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 23:24:27,011 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 [2022-11-25 23:24:27,011 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:27,036 INFO L225 Difference]: With dead ends: 5673 [2022-11-25 23:24:27,038 INFO L226 Difference]: Without dead ends: 3282 [2022-11-25 23:24:27,051 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 [2022-11-25 23:24:27,054 INFO L413 NwaCegarLoop]: 571 mSDtfsCounter, 7 mSDsluCounter, 2814 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 3385 SdHoareTripleChecker+Invalid, 256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:27,055 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 3385 Invalid, 256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:24:27,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3282 states. [2022-11-25 23:24:27,294 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3282 to 3200. [2022-11-25 23:24:27,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3200 states, 2276 states have (on average 1.5716168717047452) internal successors, (3577), 2347 states have internal predecessors, (3577), 732 states have call successors, (732), 141 states have call predecessors, (732), 191 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-25 23:24:27,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3200 states to 3200 states and 5154 transitions. [2022-11-25 23:24:27,343 INFO L78 Accepts]: Start accepts. Automaton has 3200 states and 5154 transitions. Word has length 93 [2022-11-25 23:24:27,343 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:27,344 INFO L495 AbstractCegarLoop]: Abstraction has 3200 states and 5154 transitions. [2022-11-25 23:24:27,345 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) [2022-11-25 23:24:27,345 INFO L276 IsEmpty]: Start isEmpty. Operand 3200 states and 5154 transitions. [2022-11-25 23:24:27,349 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 99 [2022-11-25 23:24:27,350 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:27,350 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] [2022-11-25 23:24:27,350 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-25 23:24:27,351 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:27,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:27,351 INFO L85 PathProgramCache]: Analyzing trace with hash -68575904, now seen corresponding path program 1 times [2022-11-25 23:24:27,351 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:27,352 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863900310] [2022-11-25 23:24:27,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:27,352 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:27,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:27,909 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:27,909 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:27,910 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863900310] [2022-11-25 23:24:27,910 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863900310] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:27,910 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:27,910 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-25 23:24:27,911 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174750436] [2022-11-25 23:24:27,911 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:27,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-25 23:24:27,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:27,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-25 23:24:27,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-25 23:24:27,913 INFO L87 Difference]: Start difference. First operand 3200 states and 5154 transitions. Second operand has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-11-25 23:24:31,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:31,454 INFO L93 Difference]: Finished difference Result 7984 states and 12948 transitions. [2022-11-25 23:24:31,454 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-25 23:24:31,454 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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 98 [2022-11-25 23:24:31,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:31,497 INFO L225 Difference]: With dead ends: 7984 [2022-11-25 23:24:31,497 INFO L226 Difference]: Without dead ends: 5343 [2022-11-25 23:24:31,514 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 [2022-11-25 23:24:31,516 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 1731 mSDsluCounter, 842 mSDsCounter, 0 mSdLazyCounter, 2371 mSolverCounterSat, 713 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1896 SdHoareTripleChecker+Valid, 1394 SdHoareTripleChecker+Invalid, 3084 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 713 IncrementalHoareTripleChecker+Valid, 2371 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:31,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1896 Valid, 1394 Invalid, 3084 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [713 Valid, 2371 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-25 23:24:31,524 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5343 states. [2022-11-25 23:24:32,156 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5343 to 5204. [2022-11-25 23:24:32,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5204 states, 3627 states have (on average 1.533498759305211) internal successors, (5562), 3768 states have internal predecessors, (5562), 1246 states have call successors, (1246), 250 states have call predecessors, (1246), 330 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2022-11-25 23:24:32,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5204 states to 5204 states and 8274 transitions. [2022-11-25 23:24:32,199 INFO L78 Accepts]: Start accepts. Automaton has 5204 states and 8274 transitions. Word has length 98 [2022-11-25 23:24:32,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:32,200 INFO L495 AbstractCegarLoop]: Abstraction has 5204 states and 8274 transitions. [2022-11-25 23:24:32,201 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.5) internal successors, (60), 8 states have internal predecessors, (60), 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) [2022-11-25 23:24:32,201 INFO L276 IsEmpty]: Start isEmpty. Operand 5204 states and 8274 transitions. [2022-11-25 23:24:32,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 23:24:32,206 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:32,206 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] [2022-11-25 23:24:32,207 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-25 23:24:32,207 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:32,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:32,207 INFO L85 PathProgramCache]: Analyzing trace with hash -2134922000, now seen corresponding path program 1 times [2022-11-25 23:24:32,208 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:32,208 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1209332205] [2022-11-25 23:24:32,208 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:32,208 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:32,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:32,596 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:32,596 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:32,597 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1209332205] [2022-11-25 23:24:32,597 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1209332205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:32,597 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:32,597 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:24:32,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1706411389] [2022-11-25 23:24:32,597 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:32,598 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:24:32,598 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:32,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:24:32,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:24:32,600 INFO L87 Difference]: Start difference. First operand 5204 states and 8274 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) [2022-11-25 23:24:37,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:37,253 INFO L93 Difference]: Finished difference Result 17057 states and 27861 transitions. [2022-11-25 23:24:37,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:24:37,254 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 [2022-11-25 23:24:37,254 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:37,354 INFO L225 Difference]: With dead ends: 17057 [2022-11-25 23:24:37,354 INFO L226 Difference]: Without dead ends: 11878 [2022-11-25 23:24:37,387 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 [2022-11-25 23:24:37,390 INFO L413 NwaCegarLoop]: 592 mSDtfsCounter, 2224 mSDsluCounter, 1191 mSDsCounter, 0 mSdLazyCounter, 2971 mSolverCounterSat, 965 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2337 SdHoareTripleChecker+Valid, 1783 SdHoareTripleChecker+Invalid, 3936 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 965 IncrementalHoareTripleChecker+Valid, 2971 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.4s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:37,391 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2337 Valid, 1783 Invalid, 3936 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [965 Valid, 2971 Invalid, 0 Unknown, 0 Unchecked, 3.4s Time] [2022-11-25 23:24:37,407 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11878 states. [2022-11-25 23:24:38,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11878 to 10987. [2022-11-25 23:24:38,784 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10987 states, 7507 states have (on average 1.5255095244438523) internal successors, (11452), 7910 states have internal predecessors, (11452), 2806 states have call successors, (2806), 508 states have call predecessors, (2806), 673 states have return successors, (3468), 2799 states have call predecessors, (3468), 2801 states have call successors, (3468) [2022-11-25 23:24:38,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10987 states to 10987 states and 17726 transitions. [2022-11-25 23:24:38,872 INFO L78 Accepts]: Start accepts. Automaton has 10987 states and 17726 transitions. Word has length 101 [2022-11-25 23:24:38,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:38,874 INFO L495 AbstractCegarLoop]: Abstraction has 10987 states and 17726 transitions. [2022-11-25 23:24:38,875 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) [2022-11-25 23:24:38,875 INFO L276 IsEmpty]: Start isEmpty. Operand 10987 states and 17726 transitions. [2022-11-25 23:24:38,879 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 23:24:38,879 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:38,879 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] [2022-11-25 23:24:38,880 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-25 23:24:38,880 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:38,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:38,893 INFO L85 PathProgramCache]: Analyzing trace with hash 1945682801, now seen corresponding path program 1 times [2022-11-25 23:24:38,893 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:38,893 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [863820843] [2022-11-25 23:24:38,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:38,894 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:38,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:39,368 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-25 23:24:39,368 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:39,369 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [863820843] [2022-11-25 23:24:39,369 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [863820843] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:39,369 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:39,369 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 23:24:39,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [851917320] [2022-11-25 23:24:39,370 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:39,370 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 23:24:39,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:39,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 23:24:39,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 23:24:39,372 INFO L87 Difference]: Start difference. First operand 10987 states and 17726 transitions. Second operand has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-25 23:24:43,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:43,126 INFO L93 Difference]: Finished difference Result 21680 states and 35142 transitions. [2022-11-25 23:24:43,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 23:24:43,127 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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 102 [2022-11-25 23:24:43,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:43,217 INFO L225 Difference]: With dead ends: 21680 [2022-11-25 23:24:43,218 INFO L226 Difference]: Without dead ends: 12199 [2022-11-25 23:24:43,262 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 23:24:43,263 INFO L413 NwaCegarLoop]: 393 mSDtfsCounter, 1010 mSDsluCounter, 1284 mSDsCounter, 0 mSdLazyCounter, 2544 mSolverCounterSat, 412 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1086 SdHoareTripleChecker+Valid, 1677 SdHoareTripleChecker+Invalid, 2956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 412 IncrementalHoareTripleChecker+Valid, 2544 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:43,263 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1086 Valid, 1677 Invalid, 2956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [412 Valid, 2544 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-11-25 23:24:43,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12199 states. [2022-11-25 23:24:44,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12199 to 11221. [2022-11-25 23:24:44,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 11221 states, 7669 states have (on average 1.5217107836745338) internal successors, (11670), 8100 states have internal predecessors, (11670), 2820 states have call successors, (2820), 540 states have call predecessors, (2820), 731 states have return successors, (3556), 2811 states have call predecessors, (3556), 2815 states have call successors, (3556) [2022-11-25 23:24:44,852 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11221 states to 11221 states and 18046 transitions. [2022-11-25 23:24:44,858 INFO L78 Accepts]: Start accepts. Automaton has 11221 states and 18046 transitions. Word has length 102 [2022-11-25 23:24:44,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:44,859 INFO L495 AbstractCegarLoop]: Abstraction has 11221 states and 18046 transitions. [2022-11-25 23:24:44,859 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 8.857142857142858) internal successors, (62), 7 states have internal predecessors, (62), 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) [2022-11-25 23:24:44,859 INFO L276 IsEmpty]: Start isEmpty. Operand 11221 states and 18046 transitions. [2022-11-25 23:24:44,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2022-11-25 23:24:44,864 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:44,864 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] [2022-11-25 23:24:44,864 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-25 23:24:44,865 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:44,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:44,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1759072557, now seen corresponding path program 1 times [2022-11-25 23:24:44,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:44,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2021765737] [2022-11-25 23:24:44,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:44,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:44,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:45,241 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:24:45,242 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:45,242 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2021765737] [2022-11-25 23:24:45,242 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2021765737] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:45,242 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:45,243 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 23:24:45,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91843537] [2022-11-25 23:24:45,243 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:45,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 23:24:45,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:45,245 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 23:24:45,245 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 23:24:45,245 INFO L87 Difference]: Start difference. First operand 11221 states and 18046 transitions. Second operand has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 23:24:46,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:46,488 INFO L93 Difference]: Finished difference Result 22328 states and 36901 transitions. [2022-11-25 23:24:46,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 23:24:46,489 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) Word has length 107 [2022-11-25 23:24:46,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:46,582 INFO L225 Difference]: With dead ends: 22328 [2022-11-25 23:24:46,582 INFO L226 Difference]: Without dead ends: 12301 [2022-11-25 23:24:46,637 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 23:24:46,638 INFO L413 NwaCegarLoop]: 612 mSDtfsCounter, 216 mSDsluCounter, 928 mSDsCounter, 0 mSdLazyCounter, 166 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 216 SdHoareTripleChecker+Valid, 1540 SdHoareTripleChecker+Invalid, 202 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 166 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:46,638 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [216 Valid, 1540 Invalid, 202 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 23:24:46,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12301 states. [2022-11-25 23:24:47,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12301 to 12301. [2022-11-25 23:24:47,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12301 states, 8705 states have (on average 1.5332567489948306) internal successors, (13347), 9180 states have internal predecessors, (13347), 2820 states have call successors, (2820), 540 states have call predecessors, (2820), 775 states have return successors, (3736), 2811 states have call predecessors, (3736), 2815 states have call successors, (3736) [2022-11-25 23:24:47,926 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12301 states to 12301 states and 19903 transitions. [2022-11-25 23:24:47,929 INFO L78 Accepts]: Start accepts. Automaton has 12301 states and 19903 transitions. Word has length 107 [2022-11-25 23:24:47,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:47,930 INFO L495 AbstractCegarLoop]: Abstraction has 12301 states and 19903 transitions. [2022-11-25 23:24:47,930 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.0) internal successors, (64), 4 states have internal predecessors, (64), 4 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (19), 4 states have call predecessors, (19), 4 states have call successors, (19) [2022-11-25 23:24:47,930 INFO L276 IsEmpty]: Start isEmpty. Operand 12301 states and 19903 transitions. [2022-11-25 23:24:47,935 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-25 23:24:47,935 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:47,935 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] [2022-11-25 23:24:47,936 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-25 23:24:47,936 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:47,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:47,937 INFO L85 PathProgramCache]: Analyzing trace with hash -1080847228, now seen corresponding path program 1 times [2022-11-25 23:24:47,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:47,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1858395205] [2022-11-25 23:24:47,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:47,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:48,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:48,399 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:24:48,399 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:48,399 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1858395205] [2022-11-25 23:24:48,400 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1858395205] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:48,400 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:48,400 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-25 23:24:48,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978130580] [2022-11-25 23:24:48,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:48,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 23:24:48,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:48,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 23:24:48,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-25 23:24:48,403 INFO L87 Difference]: Start difference. First operand 12301 states and 19903 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) [2022-11-25 23:24:50,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:24:50,511 INFO L93 Difference]: Finished difference Result 12427 states and 20112 transitions. [2022-11-25 23:24:50,512 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 23:24:50,512 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 [2022-11-25 23:24:50,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:24:50,627 INFO L225 Difference]: With dead ends: 12427 [2022-11-25 23:24:50,627 INFO L226 Difference]: Without dead ends: 12412 [2022-11-25 23:24:50,644 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 [2022-11-25 23:24:50,645 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 668 mSDsluCounter, 1304 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 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, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 23:24:50,646 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1872 Invalid, 576 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 23:24:50,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12412 states. [2022-11-25 23:24:52,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12412 to 12309. [2022-11-25 23:24:52,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12309 states, 8713 states have (on average 1.5327671295764949) internal successors, (13355), 9188 states have internal predecessors, (13355), 2820 states have call successors, (2820), 540 states have call predecessors, (2820), 775 states have return successors, (3736), 2811 states have call predecessors, (3736), 2815 states have call successors, (3736) [2022-11-25 23:24:52,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12309 states to 12309 states and 19911 transitions. [2022-11-25 23:24:52,327 INFO L78 Accepts]: Start accepts. Automaton has 12309 states and 19911 transitions. Word has length 106 [2022-11-25 23:24:52,328 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:24:52,328 INFO L495 AbstractCegarLoop]: Abstraction has 12309 states and 19911 transitions. [2022-11-25 23:24:52,328 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) [2022-11-25 23:24:52,329 INFO L276 IsEmpty]: Start isEmpty. Operand 12309 states and 19911 transitions. [2022-11-25 23:24:52,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2022-11-25 23:24:52,336 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:24:52,336 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] [2022-11-25 23:24:52,336 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-25 23:24:52,337 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:24:52,337 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:24:52,337 INFO L85 PathProgramCache]: Analyzing trace with hash 1723177279, now seen corresponding path program 1 times [2022-11-25 23:24:52,338 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:24:52,338 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [463435554] [2022-11-25 23:24:52,338 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:24:52,338 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:24:52,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:24:53,147 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:24:53,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:24:53,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [463435554] [2022-11-25 23:24:53,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [463435554] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:24:53,148 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:24:53,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-25 23:24:53,149 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2063322767] [2022-11-25 23:24:53,149 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:24:53,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-25 23:24:53,150 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:24:53,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-25 23:24:53,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:24:53,151 INFO L87 Difference]: Start difference. First operand 12309 states and 19911 transitions. Second operand has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2022-11-25 23:25:00,803 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:00,804 INFO L93 Difference]: Finished difference Result 13497 states and 21721 transitions. [2022-11-25 23:25:00,804 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-25 23:25:00,805 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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 111 [2022-11-25 23:25:00,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:00,888 INFO L225 Difference]: With dead ends: 13497 [2022-11-25 23:25:00,888 INFO L226 Difference]: Without dead ends: 13480 [2022-11-25 23:25:00,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-25 23:25:00,904 INFO L413 NwaCegarLoop]: 556 mSDtfsCounter, 2747 mSDsluCounter, 3399 mSDsCounter, 0 mSdLazyCounter, 7937 mSolverCounterSat, 1555 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2773 SdHoareTripleChecker+Valid, 3955 SdHoareTripleChecker+Invalid, 9492 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 1555 IncrementalHoareTripleChecker+Valid, 7937 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.0s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:00,905 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2773 Valid, 3955 Invalid, 9492 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [1555 Valid, 7937 Invalid, 0 Unknown, 0 Unchecked, 6.0s Time] [2022-11-25 23:25:00,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13480 states. [2022-11-25 23:25:01,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13480 to 12949. [2022-11-25 23:25:01,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12949 states, 9208 states have (on average 1.538010425716768) internal successors, (14162), 9679 states have internal predecessors, (14162), 2861 states have call successors, (2861), 645 states have call predecessors, (2861), 879 states have return successors, (3788), 2855 states have call predecessors, (3788), 2856 states have call successors, (3788) [2022-11-25 23:25:02,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12949 states to 12949 states and 20811 transitions. [2022-11-25 23:25:02,047 INFO L78 Accepts]: Start accepts. Automaton has 12949 states and 20811 transitions. Word has length 111 [2022-11-25 23:25:02,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:02,048 INFO L495 AbstractCegarLoop]: Abstraction has 12949 states and 20811 transitions. [2022-11-25 23:25:02,048 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.0) internal successors, (66), 11 states have internal predecessors, (66), 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) [2022-11-25 23:25:02,048 INFO L276 IsEmpty]: Start isEmpty. Operand 12949 states and 20811 transitions. [2022-11-25 23:25:02,052 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-25 23:25:02,052 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:02,052 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] [2022-11-25 23:25:02,053 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-25 23:25:02,053 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:25:02,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:02,053 INFO L85 PathProgramCache]: Analyzing trace with hash -751901275, now seen corresponding path program 1 times [2022-11-25 23:25:02,054 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:02,054 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1188337069] [2022-11-25 23:25:02,054 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:02,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:02,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:02,748 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-25 23:25:02,749 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:02,749 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1188337069] [2022-11-25 23:25:02,749 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1188337069] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 23:25:02,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 23:25:02,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-25 23:25:02,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [302468007] [2022-11-25 23:25:02,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 23:25:02,750 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-25 23:25:02,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 23:25:02,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-25 23:25:02,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-11-25 23:25:02,752 INFO L87 Difference]: Start difference. First operand 12949 states and 20811 transitions. Second operand has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-25 23:25:07,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 23:25:07,950 INFO L93 Difference]: Finished difference Result 36610 states and 59528 transitions. [2022-11-25 23:25:07,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 23:25:07,951 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) Word has length 118 [2022-11-25 23:25:07,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 23:25:08,082 INFO L225 Difference]: With dead ends: 36610 [2022-11-25 23:25:08,083 INFO L226 Difference]: Without dead ends: 23688 [2022-11-25 23:25:08,146 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-25 23:25:08,147 INFO L413 NwaCegarLoop]: 547 mSDtfsCounter, 2587 mSDsluCounter, 1387 mSDsCounter, 0 mSdLazyCounter, 3218 mSolverCounterSat, 1047 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2657 SdHoareTripleChecker+Valid, 1934 SdHoareTripleChecker+Invalid, 4265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1047 IncrementalHoareTripleChecker+Valid, 3218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.3s IncrementalHoareTripleChecker+Time [2022-11-25 23:25:08,147 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2657 Valid, 1934 Invalid, 4265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1047 Valid, 3218 Invalid, 0 Unknown, 0 Unchecked, 3.3s Time] [2022-11-25 23:25:08,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23688 states. [2022-11-25 23:25:10,240 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23688 to 21017. [2022-11-25 23:25:10,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21017 states, 14812 states have (on average 1.5465163381042397) internal successors, (22907), 15721 states have internal predecessors, (22907), 4804 states have call successors, (4804), 1006 states have call predecessors, (4804), 1400 states have return successors, (6406), 4632 states have call predecessors, (6406), 4799 states have call successors, (6406) [2022-11-25 23:25:10,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21017 states to 21017 states and 34117 transitions. [2022-11-25 23:25:10,360 INFO L78 Accepts]: Start accepts. Automaton has 21017 states and 34117 transitions. Word has length 118 [2022-11-25 23:25:10,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 23:25:10,361 INFO L495 AbstractCegarLoop]: Abstraction has 21017 states and 34117 transitions. [2022-11-25 23:25:10,361 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 8.75) internal successors, (70), 8 states have internal predecessors, (70), 7 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 6 states have call successors, (21) [2022-11-25 23:25:10,361 INFO L276 IsEmpty]: Start isEmpty. Operand 21017 states and 34117 transitions. [2022-11-25 23:25:10,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2022-11-25 23:25:10,365 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 23:25:10,366 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, 1] [2022-11-25 23:25:10,366 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-11-25 23:25:10,366 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 23:25:10,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 23:25:10,367 INFO L85 PathProgramCache]: Analyzing trace with hash 670698030, now seen corresponding path program 1 times [2022-11-25 23:25:10,367 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 23:25:10,367 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2123138095] [2022-11-25 23:25:10,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:10,368 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 23:25:10,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:13,185 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-25 23:25:13,186 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 23:25:13,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2123138095] [2022-11-25 23:25:13,186 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2123138095] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 23:25:13,186 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1564699980] [2022-11-25 23:25:13,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 23:25:13,186 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 23:25:13,187 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 23:25:13,191 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 23:25:13,193 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_3ced9c31-fdfc-44a3-ae18-7ddf72f1f1bf/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 23:25:13,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 23:25:13,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 2114 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-25 23:25:13,690 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 23:25:16,673 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-25 23:25:16,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 23:25:20,149 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-25 23:25:20,149 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1564699980] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 23:25:20,150 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1165490049] [2022-11-25 23:25:20,178 INFO L159 IcfgInterpreter]: Started Sifa with 112 locations of interest [2022-11-25 23:25:20,178 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 23:25:20,182 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 23:25:20,187 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 23:25:20,188 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 23:25:27,885 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-25 23:26:51,414 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-25 23:27:40,618 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-25 23:27:40,720 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-11-25 23:27:48,184 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-11-25 23:27:48,286 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-11-25 23:27:48,305 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 68 for LOIs [2022-11-25 23:27:48,324 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 468 for LOIs [2022-11-25 23:27:48,699 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-25 23:27:53,608 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 476 for LOIs [2022-11-25 23:27:53,981 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-11-25 23:27:54,420 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 101 for LOIs [2022-11-25 23:27:54,446 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-25 23:27:58,100 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-25 23:32:17,574 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-25 23:32:18,136 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 23:32:37,627 WARN L233 SmtUtils]: Spent 10.82s 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) [2022-11-25 23:32:49,248 WARN L233 SmtUtils]: Spent 11.07s 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) [2022-11-25 23:32:57,510 WARN L233 SmtUtils]: Spent 7.82s 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) [2022-11-25 23:33:05,747 WARN L233 SmtUtils]: Spent 7.79s 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) [2022-11-25 23:33:26,299 WARN L233 SmtUtils]: Spent 19.86s 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) [2022-11-25 23:34:01,789 WARN L233 SmtUtils]: Spent 29.06s on a formula simplification. DAG size of input: 1178 DAG size of output: 686 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:34:39,841 WARN L233 SmtUtils]: Spent 5.92s 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) [2022-11-25 23:34:46,382 WARN L233 SmtUtils]: Spent 5.96s on a formula simplification. DAG size of input: 634 DAG size of output: 605 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:29,277 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 561 DAG size of output: 500 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:39,115 WARN L233 SmtUtils]: Spent 8.35s on a formula simplification. DAG size of input: 468 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:35:48,232 WARN L233 SmtUtils]: Spent 8.43s on a formula simplification. DAG size of input: 472 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:01,314 WARN L233 SmtUtils]: Spent 12.24s on a formula simplification. DAG size of input: 563 DAG size of output: 511 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:13,547 WARN L233 SmtUtils]: Spent 11.40s on a formula simplification. DAG size of input: 568 DAG size of output: 512 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:26,020 WARN L233 SmtUtils]: Spent 11.64s on a formula simplification. DAG size of input: 570 DAG size of output: 514 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:38,761 WARN L233 SmtUtils]: Spent 11.80s on a formula simplification. DAG size of input: 572 DAG size of output: 516 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:36:52,482 WARN L233 SmtUtils]: Spent 12.63s on a formula simplification. DAG size of input: 574 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:00,785 WARN L233 SmtUtils]: Spent 7.35s on a formula simplification. DAG size of input: 576 DAG size of output: 513 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:09,020 WARN L233 SmtUtils]: Spent 7.05s on a formula simplification. DAG size of input: 578 DAG size of output: 515 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:16,346 WARN L233 SmtUtils]: Spent 6.37s on a formula simplification. DAG size of input: 552 DAG size of output: 489 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:23,224 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 554 DAG size of output: 491 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:30,515 WARN L233 SmtUtils]: Spent 6.35s on a formula simplification. DAG size of input: 557 DAG size of output: 494 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 23:37:37,887 WARN L233 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 476 DAG size of output: 454 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)