./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 5e519f3a Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-5e519f3 [2022-11-03 02:44:26,977 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-03 02:44:26,979 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-03 02:44:27,005 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-03 02:44:27,005 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-03 02:44:27,007 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-03 02:44:27,008 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-03 02:44:27,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-03 02:44:27,011 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-03 02:44:27,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-03 02:44:27,014 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-03 02:44:27,015 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-03 02:44:27,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-03 02:44:27,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-03 02:44:27,018 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-03 02:44:27,019 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-03 02:44:27,020 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-03 02:44:27,021 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-03 02:44:27,023 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-03 02:44:27,025 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-03 02:44:27,027 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-03 02:44:27,028 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-03 02:44:27,029 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-03 02:44:27,030 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-03 02:44:27,034 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-03 02:44:27,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-03 02:44:27,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-03 02:44:27,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-03 02:44:27,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-03 02:44:27,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-03 02:44:27,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-03 02:44:27,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-03 02:44:27,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-03 02:44:27,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-03 02:44:27,042 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-03 02:44:27,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-03 02:44:27,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-03 02:44:27,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-03 02:44:27,044 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-03 02:44:27,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-03 02:44:27,045 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-03 02:44:27,046 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-03 02:44:27,087 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-03 02:44:27,092 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-03 02:44:27,093 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-03 02:44:27,093 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-03 02:44:27,094 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-03 02:44:27,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-03 02:44:27,095 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-03 02:44:27,095 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-03 02:44:27,095 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-03 02:44:27,096 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-03 02:44:27,097 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-03 02:44:27,097 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-03 02:44:27,097 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-03 02:44:27,098 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-03 02:44:27,098 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-03 02:44:27,098 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-03 02:44:27,098 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-03 02:44:27,099 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-03 02:44:27,114 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-03 02:44:27,114 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-03 02:44:27,114 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-03 02:44:27,115 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-03 02:44:27,116 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-03 02:44:27,116 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-03 02:44:27,116 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-03 02:44:27,116 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-03 02:44:27,116 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-03 02:44:27,117 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:27,117 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-03 02:44:27,117 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-03 02:44:27,117 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-03 02:44:27,117 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-03 02:44:27,118 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-03 02:44:27,118 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-03 02:44:27,118 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-03 02:44:27,118 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-03 02:44:27,118 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_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> f0289d2bc768d77152556c65688d1c231999d9919b651d65a3b9e8da8ee9b3f9 [2022-11-03 02:44:27,391 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-03 02:44:27,414 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-03 02:44:27,417 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-03 02:44:27,418 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-03 02:44:27,419 INFO L275 PluginConnector]: CDTParser initialized [2022-11-03 02:44:27,420 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/../../sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-11-03 02:44:27,498 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/data/d33faa603/75f4b48669c24d17a374a0e0847df4e8/FLAG2551c50b7 [2022-11-03 02:44:28,288 INFO L306 CDTParser]: Found 1 translation units. [2022-11-03 02:44:28,289 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c [2022-11-03 02:44:28,322 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/data/d33faa603/75f4b48669c24d17a374a0e0847df4e8/FLAG2551c50b7 [2022-11-03 02:44:28,409 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/data/d33faa603/75f4b48669c24d17a374a0e0847df4e8 [2022-11-03 02:44:28,413 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-03 02:44:28,415 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-03 02:44:28,419 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:28,420 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-03 02:44:28,435 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-03 02:44:28,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:28" (1/1) ... [2022-11-03 02:44:28,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6548480f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:28, skipping insertion in model container [2022-11-03 02:44:28,439 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 02:44:28" (1/1) ... [2022-11-03 02:44:28,447 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-03 02:44:28,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-03 02:44:28,915 WARN L230 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_1a342d66-ca7f-4eeb-a57c-f50631679599/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-11-03 02:44:29,137 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:29,153 INFO L203 MainTranslator]: Completed pre-run [2022-11-03 02:44:29,237 WARN L230 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_1a342d66-ca7f-4eeb-a57c-f50631679599/sv-benchmarks/c/product-lines/elevator_spec1_product22.cil.c[27271,27284] [2022-11-03 02:44:29,325 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-03 02:44:29,367 INFO L208 MainTranslator]: Completed translation [2022-11-03 02:44:29,368 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29 WrapperNode [2022-11-03 02:44:29,368 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-03 02:44:29,369 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:29,369 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-03 02:44:29,369 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-03 02:44:29,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,404 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,464 INFO L138 Inliner]: procedures = 94, calls = 346, calls flagged for inlining = 26, calls inlined = 22, statements flattened = 865 [2022-11-03 02:44:29,464 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-03 02:44:29,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-03 02:44:29,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-03 02:44:29,466 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-03 02:44:29,475 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,499 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,570 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,575 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,579 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,586 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-03 02:44:29,587 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-03 02:44:29,587 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-03 02:44:29,588 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-03 02:44:29,589 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (1/1) ... [2022-11-03 02:44:29,596 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-03 02:44:29,609 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:44:29,622 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-03 02:44:29,661 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-03 02:44:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-03 02:44:29,706 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-03 02:44:29,706 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-03 02:44:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-03 02:44:29,707 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-03 02:44:29,707 INFO L130 BoogieDeclarations]: Found specification of procedure bigMacCall [2022-11-03 02:44:29,707 INFO L138 BoogieDeclarations]: Found implementation of procedure bigMacCall [2022-11-03 02:44:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-03 02:44:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-03 02:44:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-03 02:44:29,708 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-03 02:44:29,708 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-03 02:44:29,709 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-03 02:44:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-03 02:44:29,709 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-03 02:44:29,709 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-03 02:44:29,709 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-03 02:44:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure areDoorsOpen [2022-11-03 02:44:29,710 INFO L138 BoogieDeclarations]: Found implementation of procedure areDoorsOpen [2022-11-03 02:44:29,710 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-03 02:44:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-03 02:44:29,711 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-03 02:44:29,711 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-03 02:44:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-03 02:44:29,712 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-03 02:44:29,712 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-03 02:44:29,712 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-03 02:44:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-03 02:44:29,713 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-03 02:44:29,713 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-03 02:44:29,715 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-03 02:44:29,715 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-03 02:44:29,716 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-03 02:44:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-03 02:44:29,716 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-03 02:44:29,716 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-03 02:44:29,716 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-03 02:44:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-03 02:44:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-03 02:44:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-03 02:44:29,717 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-03 02:44:29,717 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-03 02:44:29,718 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-03 02:44:29,718 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-03 02:44:29,719 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-03 02:44:29,720 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-03 02:44:29,721 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-03 02:44:29,721 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-03 02:44:29,722 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__twothirdsfull [2022-11-03 02:44:29,723 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__twothirdsfull [2022-11-03 02:44:29,723 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__weight [2022-11-03 02:44:29,723 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__weight [2022-11-03 02:44:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-03 02:44:29,724 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-03 02:44:29,724 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-03 02:44:29,725 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-03 02:44:30,006 INFO L235 CfgBuilder]: Building ICFG [2022-11-03 02:44:30,009 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-03 02:44:31,265 INFO L276 CfgBuilder]: Performing block encoding [2022-11-03 02:44:32,171 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-03 02:44:32,171 INFO L300 CfgBuilder]: Removed 1 assume(true) statements. [2022-11-03 02:44:32,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:32 BoogieIcfgContainer [2022-11-03 02:44:32,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-03 02:44:32,180 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-03 02:44:32,180 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-03 02:44:32,184 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-03 02:44:32,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 02:44:28" (1/3) ... [2022-11-03 02:44:32,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e9f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:32, skipping insertion in model container [2022-11-03 02:44:32,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 02:44:29" (2/3) ... [2022-11-03 02:44:32,186 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e9f2a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 02:44:32, skipping insertion in model container [2022-11-03 02:44:32,187 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 02:44:32" (3/3) ... [2022-11-03 02:44:32,188 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec1_product22.cil.c [2022-11-03 02:44:32,207 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-03 02:44:32,208 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-03 02:44:32,282 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-03 02:44:32,289 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;@2e625b42, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-03 02:44:32,290 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-03 02:44:32,296 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) [2022-11-03 02:44:32,312 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2022-11-03 02:44:32,313 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:32,314 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] [2022-11-03 02:44:32,314 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:32,320 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:32,320 INFO L85 PathProgramCache]: Analyzing trace with hash 258275901, now seen corresponding path program 1 times [2022-11-03 02:44:32,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:32,331 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080471869] [2022-11-03 02:44:32,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:32,332 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:32,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:33,446 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:44:33,447 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:33,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080471869] [2022-11-03 02:44:33,448 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080471869] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:33,448 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:33,449 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:44:33,451 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821794258] [2022-11-03 02:44:33,452 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:33,457 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:44:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:33,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:44:33,497 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:44:33,502 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) [2022-11-03 02:44:36,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:36,554 INFO L93 Difference]: Finished difference Result 1260 states and 2036 transitions. [2022-11-03 02:44:36,556 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-03 02:44:36,558 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 [2022-11-03 02:44:36,559 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:36,584 INFO L225 Difference]: With dead ends: 1260 [2022-11-03 02:44:36,585 INFO L226 Difference]: Without dead ends: 887 [2022-11-03 02:44:36,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:44:36,598 INFO L413 NwaCegarLoop]: 597 mSDtfsCounter, 1226 mSDsluCounter, 809 mSDsCounter, 0 mSdLazyCounter, 1431 mSolverCounterSat, 472 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1293 SdHoareTripleChecker+Valid, 1357 SdHoareTripleChecker+Invalid, 1903 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 472 IncrementalHoareTripleChecker+Valid, 1431 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:36,600 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1293 Valid, 1357 Invalid, 1903 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [472 Valid, 1431 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2022-11-03 02:44:36,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 887 states. [2022-11-03 02:44:36,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 887 to 800. [2022-11-03 02:44:36,754 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) [2022-11-03 02:44:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 800 states to 800 states and 1286 transitions. [2022-11-03 02:44:36,766 INFO L78 Accepts]: Start accepts. Automaton has 800 states and 1286 transitions. Word has length 54 [2022-11-03 02:44:36,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:36,767 INFO L495 AbstractCegarLoop]: Abstraction has 800 states and 1286 transitions. [2022-11-03 02:44:36,768 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) [2022-11-03 02:44:36,768 INFO L276 IsEmpty]: Start isEmpty. Operand 800 states and 1286 transitions. [2022-11-03 02:44:36,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2022-11-03 02:44:36,780 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:36,780 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] [2022-11-03 02:44:36,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-03 02:44:36,781 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:36,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:36,782 INFO L85 PathProgramCache]: Analyzing trace with hash -1581585000, now seen corresponding path program 1 times [2022-11-03 02:44:36,782 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:36,783 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219756433] [2022-11-03 02:44:36,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:36,783 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:36,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:37,836 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:44:37,836 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:37,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219756433] [2022-11-03 02:44:37,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219756433] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:37,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:37,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-11-03 02:44:37,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104070453] [2022-11-03 02:44:37,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:37,839 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-11-03 02:44:37,839 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:37,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-11-03 02:44:37,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:44:37,841 INFO L87 Difference]: Start difference. First operand 800 states and 1286 transitions. Second operand has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 02:44:44,545 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:44,545 INFO L93 Difference]: Finished difference Result 3325 states and 5449 transitions. [2022-11-03 02:44:44,546 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 34 states. [2022-11-03 02:44:44,546 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) Word has length 87 [2022-11-03 02:44:44,547 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:44,581 INFO L225 Difference]: With dead ends: 3325 [2022-11-03 02:44:44,581 INFO L226 Difference]: Without dead ends: 2548 [2022-11-03 02:44:44,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=240, Invalid=1400, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 02:44:44,596 INFO L413 NwaCegarLoop]: 960 mSDtfsCounter, 2525 mSDsluCounter, 3801 mSDsCounter, 0 mSdLazyCounter, 7657 mSolverCounterSat, 2181 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2557 SdHoareTripleChecker+Valid, 4582 SdHoareTripleChecker+Invalid, 9838 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 2181 IncrementalHoareTripleChecker+Valid, 7657 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:44,597 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2557 Valid, 4582 Invalid, 9838 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [2181 Valid, 7657 Invalid, 0 Unknown, 0 Unchecked, 5.8s Time] [2022-11-03 02:44:44,602 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2548 states. [2022-11-03 02:44:44,802 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2548 to 1806. [2022-11-03 02:44:44,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1806 states, 1236 states have (on average 1.564724919093851) internal successors, (1934), 1308 states have internal predecessors, (1934), 474 states have call successors, (474), 83 states have call predecessors, (474), 95 states have return successors, (493), 447 states have call predecessors, (493), 469 states have call successors, (493) [2022-11-03 02:44:44,820 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1806 states to 1806 states and 2901 transitions. [2022-11-03 02:44:44,821 INFO L78 Accepts]: Start accepts. Automaton has 1806 states and 2901 transitions. Word has length 87 [2022-11-03 02:44:44,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:44,822 INFO L495 AbstractCegarLoop]: Abstraction has 1806 states and 2901 transitions. [2022-11-03 02:44:44,822 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.909090909090909) internal successors, (54), 11 states have internal predecessors, (54), 6 states have call successors, (16), 3 states have call predecessors, (16), 4 states have return successors, (15), 5 states have call predecessors, (15), 6 states have call successors, (15) [2022-11-03 02:44:44,822 INFO L276 IsEmpty]: Start isEmpty. Operand 1806 states and 2901 transitions. [2022-11-03 02:44:44,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2022-11-03 02:44:44,826 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:44,827 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] [2022-11-03 02:44:44,827 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-03 02:44:44,827 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:44,828 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:44,828 INFO L85 PathProgramCache]: Analyzing trace with hash 225082816, now seen corresponding path program 1 times [2022-11-03 02:44:44,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:44,828 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1258245086] [2022-11-03 02:44:44,829 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:44,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:44,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:45,346 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:45,346 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:45,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1258245086] [2022-11-03 02:44:45,347 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1258245086] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:45,347 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:45,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-11-03 02:44:45,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1397979164] [2022-11-03 02:44:45,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:45,348 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-11-03 02:44:45,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:45,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-11-03 02:44:45,348 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-11-03 02:44:45,349 INFO L87 Difference]: Start difference. First operand 1806 states and 2901 transitions. Second operand has 9 states, 9 states have (on average 5.888888888888889) internal successors, (53), 9 states have internal predecessors, (53), 6 states have call successors, (17), 3 states have call predecessors, (17), 4 states have return successors, (16), 6 states have call predecessors, (16), 5 states have call successors, (16) [2022-11-03 02:44:48,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:48,747 INFO L93 Difference]: Finished difference Result 5061 states and 8162 transitions. [2022-11-03 02:44:48,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2022-11-03 02:44:48,748 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 [2022-11-03 02:44:48,749 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:48,769 INFO L225 Difference]: With dead ends: 5061 [2022-11-03 02:44:48,769 INFO L226 Difference]: Without dead ends: 3280 [2022-11-03 02:44:48,779 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 [2022-11-03 02:44:48,780 INFO L413 NwaCegarLoop]: 793 mSDtfsCounter, 1748 mSDsluCounter, 2333 mSDsCounter, 0 mSdLazyCounter, 3635 mSolverCounterSat, 610 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1814 SdHoareTripleChecker+Valid, 2993 SdHoareTripleChecker+Invalid, 4245 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 610 IncrementalHoareTripleChecker+Valid, 3635 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.9s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:48,781 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1814 Valid, 2993 Invalid, 4245 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [610 Valid, 3635 Invalid, 0 Unknown, 0 Unchecked, 2.9s Time] [2022-11-03 02:44:48,785 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2022-11-03 02:44:49,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3118. [2022-11-03 02:44:49,060 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3118 states, 2210 states have (on average 1.5886877828054298) internal successors, (3511), 2301 states have internal predecessors, (3511), 732 states have call successors, (732), 145 states have call predecessors, (732), 175 states have return successors, (795), 715 states have call predecessors, (795), 727 states have call successors, (795) [2022-11-03 02:44:49,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3118 states to 3118 states and 5038 transitions. [2022-11-03 02:44:49,084 INFO L78 Accepts]: Start accepts. Automaton has 3118 states and 5038 transitions. Word has length 89 [2022-11-03 02:44:49,085 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:49,086 INFO L495 AbstractCegarLoop]: Abstraction has 3118 states and 5038 transitions. [2022-11-03 02:44:49,086 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) [2022-11-03 02:44:49,086 INFO L276 IsEmpty]: Start isEmpty. Operand 3118 states and 5038 transitions. [2022-11-03 02:44:49,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 02:44:49,090 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:49,091 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] [2022-11-03 02:44:49,091 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-03 02:44:49,091 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:49,092 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:49,092 INFO L85 PathProgramCache]: Analyzing trace with hash -2121845223, now seen corresponding path program 1 times [2022-11-03 02:44:49,093 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:49,093 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918318164] [2022-11-03 02:44:49,093 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:49,093 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:49,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:49,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:49,511 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:49,511 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918318164] [2022-11-03 02:44:49,511 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918318164] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:49,511 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:49,512 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:44:49,512 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [237682059] [2022-11-03 02:44:49,512 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:49,514 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:44:49,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:49,514 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:44:49,514 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:49,515 INFO L87 Difference]: Start difference. First operand 3118 states and 5038 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:44:49,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:49,946 INFO L93 Difference]: Finished difference Result 5565 states and 9010 transitions. [2022-11-03 02:44:49,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:44:49,950 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 [2022-11-03 02:44:49,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:49,970 INFO L225 Difference]: With dead ends: 5565 [2022-11-03 02:44:49,971 INFO L226 Difference]: Without dead ends: 3230 [2022-11-03 02:44:49,984 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 [2022-11-03 02:44:49,992 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 3002 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 3404 SdHoareTripleChecker+Invalid, 257 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:49,993 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] [2022-11-03 02:44:49,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3230 states. [2022-11-03 02:44:50,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3230 to 3188. [2022-11-03 02:44:50,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3188 states, 2260 states have (on average 1.5756637168141594) internal successors, (3561), 2351 states have internal predecessors, (3561), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 735 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 02:44:50,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3188 states to 3188 states and 5138 transitions. [2022-11-03 02:44:50,254 INFO L78 Accepts]: Start accepts. Automaton has 3188 states and 5138 transitions. Word has length 94 [2022-11-03 02:44:50,254 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:50,254 INFO L495 AbstractCegarLoop]: Abstraction has 3188 states and 5138 transitions. [2022-11-03 02:44:50,255 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) [2022-11-03 02:44:50,255 INFO L276 IsEmpty]: Start isEmpty. Operand 3188 states and 5138 transitions. [2022-11-03 02:44:50,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2022-11-03 02:44:50,257 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:50,258 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] [2022-11-03 02:44:50,258 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-11-03 02:44:50,258 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:50,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:50,258 INFO L85 PathProgramCache]: Analyzing trace with hash -915832120, now seen corresponding path program 1 times [2022-11-03 02:44:50,259 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:50,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1255228290] [2022-11-03 02:44:50,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:50,259 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:50,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:50,664 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:50,665 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:50,665 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1255228290] [2022-11-03 02:44:50,665 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1255228290] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:50,665 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:50,665 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:44:50,665 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1708018599] [2022-11-03 02:44:50,666 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:50,666 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:44:50,667 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:50,667 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:44:50,667 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:50,667 INFO L87 Difference]: Start difference. First operand 3188 states and 5138 transitions. Second operand has 7 states, 7 states have (on average 7.857142857142857) internal successors, (55), 5 states have internal predecessors, (55), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:44:51,059 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:51,060 INFO L93 Difference]: Finished difference Result 5671 states and 9150 transitions. [2022-11-03 02:44:51,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:44:51,060 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 [2022-11-03 02:44:51,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:51,083 INFO L225 Difference]: With dead ends: 5671 [2022-11-03 02:44:51,083 INFO L226 Difference]: Without dead ends: 3280 [2022-11-03 02:44:51,096 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 [2022-11-03 02:44:51,098 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 3002 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 [2022-11-03 02:44:51,099 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] [2022-11-03 02:44:51,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3280 states. [2022-11-03 02:44:51,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3280 to 3198. [2022-11-03 02:44:51,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3198 states, 2270 states have (on average 1.5731277533039647) internal successors, (3571), 2351 states have internal predecessors, (3571), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 745 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 02:44:51,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3198 states to 3198 states and 5148 transitions. [2022-11-03 02:44:51,368 INFO L78 Accepts]: Start accepts. Automaton has 3198 states and 5148 transitions. Word has length 93 [2022-11-03 02:44:51,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:51,368 INFO L495 AbstractCegarLoop]: Abstraction has 3198 states and 5148 transitions. [2022-11-03 02:44:51,369 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) [2022-11-03 02:44:51,369 INFO L276 IsEmpty]: Start isEmpty. Operand 3198 states and 5148 transitions. [2022-11-03 02:44:51,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2022-11-03 02:44:51,377 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:51,377 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] [2022-11-03 02:44:51,377 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-11-03 02:44:51,377 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:51,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:51,378 INFO L85 PathProgramCache]: Analyzing trace with hash 2054709305, now seen corresponding path program 1 times [2022-11-03 02:44:51,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:51,378 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277469655] [2022-11-03 02:44:51,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:51,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:51,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:51,728 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:51,729 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:51,729 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277469655] [2022-11-03 02:44:51,729 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277469655] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:51,729 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:51,729 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:44:51,729 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740483438] [2022-11-03 02:44:51,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:51,731 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:44:51,731 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:51,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:44:51,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:44:51,732 INFO L87 Difference]: Start difference. First operand 3198 states and 5148 transitions. Second operand has 7 states, 7 states have (on average 8.0) internal successors, (56), 5 states have internal predecessors, (56), 2 states have call successors, (18), 2 states have call predecessors, (18), 4 states have return successors, (17), 4 states have call predecessors, (17), 2 states have call successors, (17) [2022-11-03 02:44:52,185 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:52,185 INFO L93 Difference]: Finished difference Result 5689 states and 9168 transitions. [2022-11-03 02:44:52,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-03 02:44:52,186 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 [2022-11-03 02:44:52,186 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:52,209 INFO L225 Difference]: With dead ends: 5689 [2022-11-03 02:44:52,209 INFO L226 Difference]: Without dead ends: 3290 [2022-11-03 02:44:52,223 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 [2022-11-03 02:44:52,225 INFO L413 NwaCegarLoop]: 575 mSDtfsCounter, 6 mSDsluCounter, 3002 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 [2022-11-03 02:44:52,225 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] [2022-11-03 02:44:52,230 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3290 states. [2022-11-03 02:44:52,454 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3290 to 3208. [2022-11-03 02:44:52,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3208 states, 2280 states have (on average 1.5706140350877194) internal successors, (3581), 2351 states have internal predecessors, (3581), 732 states have call successors, (732), 145 states have call predecessors, (732), 195 states have return successors, (845), 755 states have call predecessors, (845), 727 states have call successors, (845) [2022-11-03 02:44:52,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3208 states to 3208 states and 5158 transitions. [2022-11-03 02:44:52,477 INFO L78 Accepts]: Start accepts. Automaton has 3208 states and 5158 transitions. Word has length 94 [2022-11-03 02:44:52,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:52,478 INFO L495 AbstractCegarLoop]: Abstraction has 3208 states and 5158 transitions. [2022-11-03 02:44:52,478 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) [2022-11-03 02:44:52,478 INFO L276 IsEmpty]: Start isEmpty. Operand 3208 states and 5158 transitions. [2022-11-03 02:44:52,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 98 [2022-11-03 02:44:52,481 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:52,481 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:52,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-11-03 02:44:52,482 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:52,482 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:52,482 INFO L85 PathProgramCache]: Analyzing trace with hash -1713274016, now seen corresponding path program 1 times [2022-11-03 02:44:52,482 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:52,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885756045] [2022-11-03 02:44:52,483 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:52,483 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:52,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:52,946 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:52,946 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:52,946 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885756045] [2022-11-03 02:44:52,946 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [885756045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:52,946 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:52,946 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:44:52,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [821655156] [2022-11-03 02:44:52,947 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:52,947 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:44:52,947 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:52,948 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:44:52,948 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:44:52,948 INFO L87 Difference]: Start difference. First operand 3208 states and 5158 transitions. Second operand has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-03 02:44:55,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:44:55,713 INFO L93 Difference]: Finished difference Result 8008 states and 12960 transitions. [2022-11-03 02:44:55,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-11-03 02:44:55,714 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) Word has length 97 [2022-11-03 02:44:55,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:44:55,747 INFO L225 Difference]: With dead ends: 8008 [2022-11-03 02:44:55,748 INFO L226 Difference]: Without dead ends: 5359 [2022-11-03 02:44:55,765 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 [2022-11-03 02:44:55,766 INFO L413 NwaCegarLoop]: 886 mSDtfsCounter, 1968 mSDsluCounter, 908 mSDsCounter, 0 mSdLazyCounter, 2037 mSolverCounterSat, 906 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2133 SdHoareTripleChecker+Valid, 1737 SdHoareTripleChecker+Invalid, 2943 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 906 IncrementalHoareTripleChecker+Valid, 2037 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2022-11-03 02:44:55,766 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2133 Valid, 1737 Invalid, 2943 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [906 Valid, 2037 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2022-11-03 02:44:55,772 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5359 states. [2022-11-03 02:44:56,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5359 to 5220. [2022-11-03 02:44:56,269 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5220 states, 3635 states have (on average 1.5323246217331499) internal successors, (5570), 3776 states have internal predecessors, (5570), 1246 states have call successors, (1246), 258 states have call predecessors, (1246), 338 states have return successors, (1466), 1262 states have call predecessors, (1466), 1241 states have call successors, (1466) [2022-11-03 02:44:56,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5220 states to 5220 states and 8282 transitions. [2022-11-03 02:44:56,296 INFO L78 Accepts]: Start accepts. Automaton has 5220 states and 8282 transitions. Word has length 97 [2022-11-03 02:44:56,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:44:56,296 INFO L495 AbstractCegarLoop]: Abstraction has 5220 states and 8282 transitions. [2022-11-03 02:44:56,297 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 7.375) internal successors, (59), 8 states have internal predecessors, (59), 7 states have call successors, (18), 4 states have call predecessors, (18), 3 states have return successors, (17), 8 states have call predecessors, (17), 6 states have call successors, (17) [2022-11-03 02:44:56,297 INFO L276 IsEmpty]: Start isEmpty. Operand 5220 states and 8282 transitions. [2022-11-03 02:44:56,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 101 [2022-11-03 02:44:56,301 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:44:56,301 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:44:56,301 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-11-03 02:44:56,302 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:44:56,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:44:56,302 INFO L85 PathProgramCache]: Analyzing trace with hash 89626848, now seen corresponding path program 1 times [2022-11-03 02:44:56,302 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:44:56,302 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [300528455] [2022-11-03 02:44:56,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:44:56,303 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:44:56,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:44:56,924 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:44:56,924 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:44:56,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [300528455] [2022-11-03 02:44:56,924 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [300528455] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:44:56,924 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:44:56,925 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:44:56,925 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [868552033] [2022-11-03 02:44:56,925 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:44:56,925 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:44:56,925 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:44:56,926 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:44:56,926 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:44:56,926 INFO L87 Difference]: Start difference. First operand 5220 states and 8282 transitions. Second operand has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 02:45:02,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:02,467 INFO L93 Difference]: Finished difference Result 10943 states and 17682 transitions. [2022-11-03 02:45:02,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2022-11-03 02:45:02,468 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) Word has length 100 [2022-11-03 02:45:02,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:02,514 INFO L225 Difference]: With dead ends: 10943 [2022-11-03 02:45:02,514 INFO L226 Difference]: Without dead ends: 6194 [2022-11-03 02:45:02,544 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 352 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=206, Invalid=1434, Unknown=0, NotChecked=0, Total=1640 [2022-11-03 02:45:02,545 INFO L413 NwaCegarLoop]: 871 mSDtfsCounter, 2271 mSDsluCounter, 4236 mSDsCounter, 0 mSdLazyCounter, 7066 mSolverCounterSat, 1278 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2289 SdHoareTripleChecker+Valid, 4909 SdHoareTripleChecker+Invalid, 8344 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1278 IncrementalHoareTripleChecker+Valid, 7066 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:02,546 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2289 Valid, 4909 Invalid, 8344 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1278 Valid, 7066 Invalid, 0 Unknown, 0 Unchecked, 4.6s Time] [2022-11-03 02:45:02,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6194 states. [2022-11-03 02:45:03,084 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6194 to 6000. [2022-11-03 02:45:03,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6000 states, 4352 states have (on average 1.5415900735294117) internal successors, (6709), 4513 states have internal predecessors, (6709), 1269 states have call successors, (1269), 278 states have call predecessors, (1269), 378 states have return successors, (1489), 1285 states have call predecessors, (1489), 1264 states have call successors, (1489) [2022-11-03 02:45:03,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6000 states to 6000 states and 9467 transitions. [2022-11-03 02:45:03,121 INFO L78 Accepts]: Start accepts. Automaton has 6000 states and 9467 transitions. Word has length 100 [2022-11-03 02:45:03,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:03,123 INFO L495 AbstractCegarLoop]: Abstraction has 6000 states and 9467 transitions. [2022-11-03 02:45:03,123 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 5.166666666666667) internal successors, (62), 12 states have internal predecessors, (62), 8 states have call successors, (18), 3 states have call predecessors, (18), 6 states have return successors, (17), 7 states have call predecessors, (17), 8 states have call successors, (17) [2022-11-03 02:45:03,123 INFO L276 IsEmpty]: Start isEmpty. Operand 6000 states and 9467 transitions. [2022-11-03 02:45:03,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-03 02:45:03,126 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:03,126 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] [2022-11-03 02:45:03,126 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-11-03 02:45:03,127 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:03,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:03,127 INFO L85 PathProgramCache]: Analyzing trace with hash 1011991307, now seen corresponding path program 1 times [2022-11-03 02:45:03,128 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:03,128 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1145357390] [2022-11-03 02:45:03,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:03,128 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:03,455 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:45:03,456 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:03,456 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1145357390] [2022-11-03 02:45:03,456 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1145357390] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:03,456 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:03,456 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:45:03,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319129176] [2022-11-03 02:45:03,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:03,458 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:45:03,458 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:03,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:45:03,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:45:03,459 INFO L87 Difference]: Start difference. First operand 6000 states and 9467 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 5 states have call successors, (18), 3 states have call predecessors, (18), 3 states have return successors, (17), 6 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-03 02:45:07,027 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:07,027 INFO L93 Difference]: Finished difference Result 19284 states and 31114 transitions. [2022-11-03 02:45:07,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-03 02:45:07,028 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 [2022-11-03 02:45:07,028 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:07,113 INFO L225 Difference]: With dead ends: 19284 [2022-11-03 02:45:07,113 INFO L226 Difference]: Without dead ends: 13309 [2022-11-03 02:45:07,143 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 [2022-11-03 02:45:07,146 INFO L413 NwaCegarLoop]: 1001 mSDtfsCounter, 2173 mSDsluCounter, 1046 mSDsCounter, 0 mSdLazyCounter, 2305 mSolverCounterSat, 972 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2251 SdHoareTripleChecker+Valid, 1993 SdHoareTripleChecker+Invalid, 3277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 972 IncrementalHoareTripleChecker+Valid, 2305 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.4s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:07,146 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2251 Valid, 1993 Invalid, 3277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [972 Valid, 2305 Invalid, 0 Unknown, 0 Unchecked, 2.4s Time] [2022-11-03 02:45:07,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13309 states. [2022-11-03 02:45:08,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13309 to 12082. [2022-11-03 02:45:08,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12082 states, 8740 states have (on average 1.5322654462242562) internal successors, (13392), 9106 states have internal predecessors, (13392), 2570 states have call successors, (2570), 566 states have call predecessors, (2570), 771 states have return successors, (3232), 2605 states have call predecessors, (3232), 2565 states have call successors, (3232) [2022-11-03 02:45:08,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12082 states to 12082 states and 19194 transitions. [2022-11-03 02:45:08,405 INFO L78 Accepts]: Start accepts. Automaton has 12082 states and 19194 transitions. Word has length 101 [2022-11-03 02:45:08,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:08,405 INFO L495 AbstractCegarLoop]: Abstraction has 12082 states and 19194 transitions. [2022-11-03 02:45:08,406 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) [2022-11-03 02:45:08,406 INFO L276 IsEmpty]: Start isEmpty. Operand 12082 states and 19194 transitions. [2022-11-03 02:45:08,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2022-11-03 02:45:08,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:08,409 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:08,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-11-03 02:45:08,410 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:08,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:08,410 INFO L85 PathProgramCache]: Analyzing trace with hash 1167525085, now seen corresponding path program 1 times [2022-11-03 02:45:08,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:08,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1470346989] [2022-11-03 02:45:08,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:08,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:08,829 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2022-11-03 02:45:08,829 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:08,829 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1470346989] [2022-11-03 02:45:08,829 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1470346989] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:08,830 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:08,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-03 02:45:08,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1879231538] [2022-11-03 02:45:08,830 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:08,831 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-03 02:45:08,831 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:08,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-03 02:45:08,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-03 02:45:08,832 INFO L87 Difference]: Start difference. First operand 12082 states and 19194 transitions. Second operand has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 02:45:11,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:11,684 INFO L93 Difference]: Finished difference Result 23745 states and 37932 transitions. [2022-11-03 02:45:11,684 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-03 02:45:11,685 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) Word has length 103 [2022-11-03 02:45:11,685 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:11,765 INFO L225 Difference]: With dead ends: 23745 [2022-11-03 02:45:11,766 INFO L226 Difference]: Without dead ends: 13222 [2022-11-03 02:45:11,813 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-03 02:45:11,814 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 989 mSDsluCounter, 1363 mSDsCounter, 0 mSdLazyCounter, 2321 mSolverCounterSat, 428 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1065 SdHoareTripleChecker+Valid, 1920 SdHoareTripleChecker+Invalid, 2749 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 428 IncrementalHoareTripleChecker+Valid, 2321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.8s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:11,814 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1065 Valid, 1920 Invalid, 2749 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [428 Valid, 2321 Invalid, 0 Unknown, 0 Unchecked, 1.8s Time] [2022-11-03 02:45:11,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13222 states. [2022-11-03 02:45:13,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13222 to 12268. [2022-11-03 02:45:13,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12268 states, 8864 states have (on average 1.5279783393501805) internal successors, (13544), 9258 states have internal predecessors, (13544), 2574 states have call successors, (2574), 598 states have call predecessors, (2574), 829 states have return successors, (3310), 2607 states have call predecessors, (3310), 2569 states have call successors, (3310) [2022-11-03 02:45:13,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12268 states to 12268 states and 19428 transitions. [2022-11-03 02:45:13,126 INFO L78 Accepts]: Start accepts. Automaton has 12268 states and 19428 transitions. Word has length 103 [2022-11-03 02:45:13,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:13,126 INFO L495 AbstractCegarLoop]: Abstraction has 12268 states and 19428 transitions. [2022-11-03 02:45:13,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 9.0) internal successors, (63), 7 states have internal predecessors, (63), 5 states have call successors, (19), 3 states have call predecessors, (19), 3 states have return successors, (18), 5 states have call predecessors, (18), 4 states have call successors, (18) [2022-11-03 02:45:13,127 INFO L276 IsEmpty]: Start isEmpty. Operand 12268 states and 19428 transitions. [2022-11-03 02:45:13,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-03 02:45:13,130 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:13,130 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] [2022-11-03 02:45:13,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-11-03 02:45:13,131 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:13,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:13,131 INFO L85 PathProgramCache]: Analyzing trace with hash -1250478809, now seen corresponding path program 1 times [2022-11-03 02:45:13,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:13,131 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1105074265] [2022-11-03 02:45:13,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:13,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:13,427 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:45:13,427 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:13,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1105074265] [2022-11-03 02:45:13,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1105074265] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:13,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:13,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-11-03 02:45:13,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1155395475] [2022-11-03 02:45:13,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:13,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-03 02:45:13,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:13,430 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-03 02:45:13,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2022-11-03 02:45:13,430 INFO L87 Difference]: Start difference. First operand 12268 states and 19428 transitions. Second operand has 6 states, 6 states have (on average 10.5) internal successors, (63), 6 states have internal predecessors, (63), 3 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (19), 3 states have call predecessors, (19), 2 states have call successors, (19) [2022-11-03 02:45:15,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:15,008 INFO L93 Difference]: Finished difference Result 12394 states and 19637 transitions. [2022-11-03 02:45:15,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-03 02:45:15,009 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 [2022-11-03 02:45:15,009 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:15,078 INFO L225 Difference]: With dead ends: 12394 [2022-11-03 02:45:15,078 INFO L226 Difference]: Without dead ends: 12379 [2022-11-03 02:45:15,088 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 [2022-11-03 02:45:15,089 INFO L413 NwaCegarLoop]: 568 mSDtfsCounter, 668 mSDsluCounter, 1404 mSDsCounter, 0 mSdLazyCounter, 561 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 669 SdHoareTripleChecker+Valid, 1872 SdHoareTripleChecker+Invalid, 577 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 561 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:15,089 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [669 Valid, 1872 Invalid, 577 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 561 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-11-03 02:45:15,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12379 states. [2022-11-03 02:45:16,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12379 to 12276. [2022-11-03 02:45:16,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12276 states, 8872 states have (on average 1.527502254283138) internal successors, (13552), 9266 states have internal predecessors, (13552), 2574 states have call successors, (2574), 598 states have call predecessors, (2574), 829 states have return successors, (3310), 2607 states have call predecessors, (3310), 2569 states have call successors, (3310) [2022-11-03 02:45:16,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12276 states to 12276 states and 19436 transitions. [2022-11-03 02:45:16,094 INFO L78 Accepts]: Start accepts. Automaton has 12276 states and 19436 transitions. Word has length 106 [2022-11-03 02:45:16,095 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:16,095 INFO L495 AbstractCegarLoop]: Abstraction has 12276 states and 19436 transitions. [2022-11-03 02:45:16,095 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) [2022-11-03 02:45:16,095 INFO L276 IsEmpty]: Start isEmpty. Operand 12276 states and 19436 transitions. [2022-11-03 02:45:16,098 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-03 02:45:16,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:16,099 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:16,099 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-11-03 02:45:16,099 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:16,100 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:16,100 INFO L85 PathProgramCache]: Analyzing trace with hash 550466159, now seen corresponding path program 1 times [2022-11-03 02:45:16,100 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:16,100 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1260845959] [2022-11-03 02:45:16,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:16,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:16,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:16,694 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:45:16,695 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:16,695 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1260845959] [2022-11-03 02:45:16,695 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1260845959] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:16,695 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:16,696 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-11-03 02:45:16,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833786783] [2022-11-03 02:45:16,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:16,696 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-11-03 02:45:16,697 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:16,697 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-11-03 02:45:16,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=133, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:45:16,697 INFO L87 Difference]: Start difference. First operand 12276 states and 19436 transitions. Second operand has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 02:45:23,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:23,082 INFO L93 Difference]: Finished difference Result 13396 states and 21181 transitions. [2022-11-03 02:45:23,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2022-11-03 02:45:23,083 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) Word has length 112 [2022-11-03 02:45:23,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:23,163 INFO L225 Difference]: With dead ends: 13396 [2022-11-03 02:45:23,163 INFO L226 Difference]: Without dead ends: 13379 [2022-11-03 02:45:23,176 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 714 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=375, Invalid=2277, Unknown=0, NotChecked=0, Total=2652 [2022-11-03 02:45:23,177 INFO L413 NwaCegarLoop]: 860 mSDtfsCounter, 2721 mSDsluCounter, 3604 mSDsCounter, 0 mSdLazyCounter, 7583 mSolverCounterSat, 1585 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2747 SdHoareTripleChecker+Valid, 4260 SdHoareTripleChecker+Invalid, 9168 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1585 IncrementalHoareTripleChecker+Valid, 7583 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.7s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:23,178 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2747 Valid, 4260 Invalid, 9168 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1585 Valid, 7583 Invalid, 0 Unknown, 0 Unchecked, 4.7s Time] [2022-11-03 02:45:23,297 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13379 states. [2022-11-03 02:45:24,088 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13379 to 12848. [2022-11-03 02:45:24,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12848 states, 9326 states have (on average 1.5337765387089857) internal successors, (14304), 9716 states have internal predecessors, (14304), 2610 states have call successors, (2610), 681 states have call predecessors, (2610), 911 states have return successors, (3357), 2646 states have call predecessors, (3357), 2605 states have call successors, (3357) [2022-11-03 02:45:24,161 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12848 states to 12848 states and 20271 transitions. [2022-11-03 02:45:24,161 INFO L78 Accepts]: Start accepts. Automaton has 12848 states and 20271 transitions. Word has length 112 [2022-11-03 02:45:24,162 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:24,162 INFO L495 AbstractCegarLoop]: Abstraction has 12848 states and 20271 transitions. [2022-11-03 02:45:24,162 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 6.090909090909091) internal successors, (67), 11 states have internal predecessors, (67), 5 states have call successors, (21), 3 states have call predecessors, (21), 5 states have return successors, (20), 6 states have call predecessors, (20), 4 states have call successors, (20) [2022-11-03 02:45:24,163 INFO L276 IsEmpty]: Start isEmpty. Operand 12848 states and 20271 transitions. [2022-11-03 02:45:24,166 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 119 [2022-11-03 02:45:24,166 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:24,166 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] [2022-11-03 02:45:24,167 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-11-03 02:45:24,167 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:24,167 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:24,167 INFO L85 PathProgramCache]: Analyzing trace with hash 1167740981, now seen corresponding path program 1 times [2022-11-03 02:45:24,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1180994410] [2022-11-03 02:45:24,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:24,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:24,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:24,847 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-11-03 02:45:24,848 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:24,848 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1180994410] [2022-11-03 02:45:24,848 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1180994410] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:45:24,848 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-03 02:45:24,849 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-11-03 02:45:24,849 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1133847482] [2022-11-03 02:45:24,849 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:45:24,849 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-11-03 02:45:24,850 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:45:24,850 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-11-03 02:45:24,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-11-03 02:45:24,850 INFO L87 Difference]: Start difference. First operand 12848 states and 20271 transitions. Second operand has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-03 02:45:30,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-03 02:45:30,585 INFO L93 Difference]: Finished difference Result 36677 states and 58637 transitions. [2022-11-03 02:45:30,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-11-03 02:45:30,586 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) Word has length 118 [2022-11-03 02:45:30,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-03 02:45:30,736 INFO L225 Difference]: With dead ends: 36677 [2022-11-03 02:45:30,737 INFO L226 Difference]: Without dead ends: 23856 [2022-11-03 02:45:30,796 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2022-11-03 02:45:30,797 INFO L413 NwaCegarLoop]: 994 mSDtfsCounter, 2006 mSDsluCounter, 1506 mSDsCounter, 0 mSdLazyCounter, 3594 mSolverCounterSat, 828 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2076 SdHoareTripleChecker+Valid, 2419 SdHoareTripleChecker+Invalid, 4422 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 828 IncrementalHoareTripleChecker+Valid, 3594 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.5s IncrementalHoareTripleChecker+Time [2022-11-03 02:45:30,798 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2076 Valid, 2419 Invalid, 4422 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [828 Valid, 3594 Invalid, 0 Unknown, 0 Unchecked, 3.5s Time] [2022-11-03 02:45:30,819 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23856 states. [2022-11-03 02:45:33,096 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23856 to 21234. [2022-11-03 02:45:33,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21234 states, 15197 states have (on average 1.5409620319799961) internal successors, (23418), 16022 states have internal predecessors, (23418), 4580 states have call successors, (4580), 1069 states have call predecessors, (4580), 1456 states have return successors, (5852), 4450 states have call predecessors, (5852), 4575 states have call successors, (5852) [2022-11-03 02:45:33,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21234 states to 21234 states and 33850 transitions. [2022-11-03 02:45:33,186 INFO L78 Accepts]: Start accepts. Automaton has 21234 states and 33850 transitions. Word has length 118 [2022-11-03 02:45:33,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-03 02:45:33,186 INFO L495 AbstractCegarLoop]: Abstraction has 21234 states and 33850 transitions. [2022-11-03 02:45:33,186 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.75) internal successors, (70), 7 states have internal predecessors, (70), 6 states have call successors, (22), 4 states have call predecessors, (22), 2 states have return successors, (21), 6 states have call predecessors, (21), 5 states have call successors, (21) [2022-11-03 02:45:33,187 INFO L276 IsEmpty]: Start isEmpty. Operand 21234 states and 33850 transitions. [2022-11-03 02:45:33,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2022-11-03 02:45:33,195 INFO L187 NwaCegarLoop]: Found error trace [2022-11-03 02:45:33,195 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-03 02:45:33,195 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-11-03 02:45:33,196 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-03 02:45:33,196 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-03 02:45:33,196 INFO L85 PathProgramCache]: Analyzing trace with hash 1887082524, now seen corresponding path program 1 times [2022-11-03 02:45:33,196 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-03 02:45:33,197 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448209950] [2022-11-03 02:45:33,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:33,197 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-03 02:45:33,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:35,509 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2022-11-03 02:45:35,509 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-03 02:45:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448209950] [2022-11-03 02:45:35,509 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448209950] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-03 02:45:35,509 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1227382526] [2022-11-03 02:45:35,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-03 02:45:35,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-03 02:45:35,510 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 [2022-11-03 02:45:35,515 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-03 02:45:35,529 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_1a342d66-ca7f-4eeb-a57c-f50631679599/bin/utaipan-7li7fVZpFI/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-03 02:45:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-03 02:45:35,944 INFO L263 TraceCheckSpWp]: Trace formula consists of 2113 conjuncts, 23 conjunts are in the unsatisfiable core [2022-11-03 02:45:35,956 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-03 02:45:38,809 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 3 proven. 5 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-11-03 02:45:38,809 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-03 02:45:42,287 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2022-11-03 02:45:42,288 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1227382526] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-03 02:45:42,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1782435201] [2022-11-03 02:45:42,316 INFO L159 IcfgInterpreter]: Started Sifa with 111 locations of interest [2022-11-03 02:45:42,317 INFO L166 IcfgInterpreter]: Building call graph [2022-11-03 02:45:42,321 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-03 02:45:42,327 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-03 02:45:42,328 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-03 02:45:51,330 INFO L197 IcfgInterpreter]: Interpreting procedure cleanup with input of size 592 for LOIs [2022-11-03 02:47:14,165 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 592 for LOIs [2022-11-03 02:47:18,632 INFO L197 IcfgInterpreter]: Interpreting procedure areDoorsOpen with input of size 443 for LOIs [2022-11-03 02:47:18,764 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__twothirdsfull with input of size 577 for LOIs [2022-11-03 02:47:25,558 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 107 for LOIs [2022-11-03 02:47:26,149 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection__wrappee__weight with input of size 121 for LOIs [2022-11-03 02:47:26,852 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 33 for LOIs [2022-11-03 02:47:26,863 INFO L197 IcfgInterpreter]: Interpreting procedure buttonForFloorIsPressed with input of size 76 for LOIs [2022-11-03 02:47:26,878 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 33 for LOIs [2022-11-03 02:47:26,882 INFO L197 IcfgInterpreter]: Interpreting procedure bigMacCall with input of size 597 for LOIs [2022-11-03 02:47:31,171 INFO L197 IcfgInterpreter]: Interpreting procedure isBlocked with input of size 461 for LOIs [2022-11-03 02:47:31,491 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 106 for LOIs [2022-11-03 02:47:31,974 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 98 for LOIs [2022-11-03 02:47:31,988 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 560 for LOIs [2022-11-03 02:47:35,122 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 837 for LOIs [2022-11-03 02:48:08,435 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 664 for LOIs [2022-11-03 02:48:09,110 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-03 02:48:30,900 WARN L234 SmtUtils]: Spent 12.33s on a formula simplification. DAG size of input: 664 DAG size of output: 525 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:45,158 WARN L234 SmtUtils]: Spent 12.90s on a formula simplification. DAG size of input: 704 DAG size of output: 539 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:48:53,554 WARN L234 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:01,932 WARN L234 SmtUtils]: Spent 7.86s on a formula simplification. DAG size of input: 679 DAG size of output: 617 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:27,479 WARN L234 SmtUtils]: Spent 23.11s on a formula simplification. DAG size of input: 837 DAG size of output: 688 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:49:57,054 WARN L234 SmtUtils]: Spent 28.10s on a formula simplification. DAG size of input: 941 DAG size of output: 791 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:35,850 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 634 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:50:42,337 WARN L234 SmtUtils]: Spent 5.76s on a formula simplification. DAG size of input: 632 DAG size of output: 604 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:38,109 WARN L234 SmtUtils]: Spent 5.46s on a formula simplification. DAG size of input: 537 DAG size of output: 473 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:44,417 WARN L234 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 539 DAG size of output: 476 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:51:50,700 WARN L234 SmtUtils]: Spent 5.31s on a formula simplification. DAG size of input: 542 DAG size of output: 479 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:10,092 WARN L234 SmtUtils]: Spent 6.62s on a formula simplification. DAG size of input: 551 DAG size of output: 507 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:16,891 WARN L234 SmtUtils]: Spent 5.74s on a formula simplification. DAG size of input: 551 DAG size of output: 483 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:24,081 WARN L234 SmtUtils]: Spent 6.11s on a formula simplification. DAG size of input: 554 DAG size of output: 488 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:30,560 WARN L234 SmtUtils]: Spent 5.36s on a formula simplification. DAG size of input: 557 DAG size of output: 487 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:37,078 WARN L234 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 563 DAG size of output: 493 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:43,709 WARN L234 SmtUtils]: Spent 5.47s on a formula simplification. DAG size of input: 579 DAG size of output: 503 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:52:43,714 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [1782435201] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-03 02:52:43,714 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-03 02:52:43,714 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [78] imperfect sequences [22, 12, 12] total 116 [2022-11-03 02:52:43,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1213732256] [2022-11-03 02:52:43,715 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-03 02:52:43,715 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 79 states [2022-11-03 02:52:43,715 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-03 02:52:43,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 79 interpolants. [2022-11-03 02:52:43,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=800, Invalid=12540, Unknown=0, NotChecked=0, Total=13340 [2022-11-03 02:52:43,720 INFO L87 Difference]: Start difference. First operand 21234 states and 33850 transitions. Second operand has 79 states, 64 states have (on average 1.125) internal successors, (72), 50 states have internal predecessors, (72), 21 states have call successors, (22), 16 states have call predecessors, (22), 16 states have return successors, (21), 21 states have call predecessors, (21), 20 states have call successors, (21) [2022-11-03 02:52:53,355 WARN L234 SmtUtils]: Spent 8.78s on a formula simplification. DAG size of input: 646 DAG size of output: 600 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:02,766 WARN L234 SmtUtils]: Spent 8.90s on a formula simplification. DAG size of input: 658 DAG size of output: 607 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:10,177 WARN L234 SmtUtils]: Spent 6.65s on a formula simplification. DAG size of input: 752 DAG size of output: 647 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:18,227 WARN L234 SmtUtils]: Spent 6.92s on a formula simplification. DAG size of input: 609 DAG size of output: 563 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:25,768 WARN L234 SmtUtils]: Spent 7.04s on a formula simplification. DAG size of input: 621 DAG size of output: 570 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:43,373 WARN L234 SmtUtils]: Spent 11.39s on a formula simplification. DAG size of input: 799 DAG size of output: 584 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:53:56,348 WARN L234 SmtUtils]: Spent 5.12s on a formula simplification. DAG size of input: 603 DAG size of output: 598 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:02,517 WARN L234 SmtUtils]: Spent 5.44s on a formula simplification. DAG size of input: 625 DAG size of output: 601 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:08,442 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 613 DAG size of output: 609 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:14,603 WARN L234 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 623 DAG size of output: 609 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:20,665 WARN L234 SmtUtils]: Spent 5.25s on a formula simplification. DAG size of input: 617 DAG size of output: 610 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:26,469 WARN L234 SmtUtils]: Spent 5.22s on a formula simplification. DAG size of input: 609 DAG size of output: 601 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:32,332 WARN L234 SmtUtils]: Spent 5.43s on a formula simplification. DAG size of input: 621 DAG size of output: 613 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:39,025 WARN L234 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 658 DAG size of output: 623 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:45,664 WARN L234 SmtUtils]: Spent 6.04s on a formula simplification. DAG size of input: 656 DAG size of output: 621 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:52,088 WARN L234 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 639 DAG size of output: 608 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:54:58,633 WARN L234 SmtUtils]: Spent 5.97s on a formula simplification. DAG size of input: 645 DAG size of output: 614 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:05,503 WARN L234 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 662 DAG size of output: 624 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:12,444 WARN L234 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 667 DAG size of output: 628 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:19,483 WARN L234 SmtUtils]: Spent 6.41s on a formula simplification. DAG size of input: 671 DAG size of output: 632 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-03 02:55:26,596 WARN L234 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 673 DAG size of output: 634 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)