./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 38b53e6a Calling Ultimate with: /usr/lib/jvm/java-1.11.0-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/config/TaipanReach.xml -i ../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-38b53e6 [2022-11-25 22:31:06,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-11-25 22:31:06,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-11-25 22:31:06,065 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-11-25 22:31:06,066 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-11-25 22:31:06,070 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-11-25 22:31:06,073 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-11-25 22:31:06,077 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-11-25 22:31:06,080 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-11-25 22:31:06,086 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-11-25 22:31:06,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-11-25 22:31:06,091 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-11-25 22:31:06,091 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-11-25 22:31:06,095 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-11-25 22:31:06,097 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-11-25 22:31:06,099 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-11-25 22:31:06,101 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-11-25 22:31:06,103 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-11-25 22:31:06,104 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-11-25 22:31:06,113 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-11-25 22:31:06,114 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-11-25 22:31:06,118 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-11-25 22:31:06,119 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-11-25 22:31:06,121 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-11-25 22:31:06,133 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-11-25 22:31:06,133 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-11-25 22:31:06,134 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-11-25 22:31:06,137 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-11-25 22:31:06,137 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-11-25 22:31:06,138 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-11-25 22:31:06,139 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-11-25 22:31:06,140 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-11-25 22:31:06,142 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-11-25 22:31:06,144 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-11-25 22:31:06,147 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-11-25 22:31:06,147 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-11-25 22:31:06,148 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-11-25 22:31:06,148 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-11-25 22:31:06,149 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-11-25 22:31:06,151 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-11-25 22:31:06,152 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-11-25 22:31:06,153 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/config/svcomp-Reach-32bit-Taipan_Default.epf [2022-11-25 22:31:06,201 INFO L113 SettingsManager]: Loading preferences was successful [2022-11-25 22:31:06,202 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-11-25 22:31:06,202 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-11-25 22:31:06,203 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-11-25 22:31:06,204 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-11-25 22:31:06,204 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-11-25 22:31:06,204 INFO L138 SettingsManager]: * User list type=DISABLED [2022-11-25 22:31:06,204 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2022-11-25 22:31:06,205 INFO L138 SettingsManager]: * Explicit value domain=true [2022-11-25 22:31:06,205 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2022-11-25 22:31:06,206 INFO L138 SettingsManager]: * Octagon Domain=false [2022-11-25 22:31:06,206 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2022-11-25 22:31:06,207 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2022-11-25 22:31:06,207 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2022-11-25 22:31:06,207 INFO L138 SettingsManager]: * Interval Domain=false [2022-11-25 22:31:06,207 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2022-11-25 22:31:06,208 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2022-11-25 22:31:06,208 INFO L138 SettingsManager]: * Simplification Technique=POLY_PAC [2022-11-25 22:31:06,209 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-11-25 22:31:06,209 INFO L138 SettingsManager]: * sizeof long=4 [2022-11-25 22:31:06,209 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-11-25 22:31:06,210 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-11-25 22:31:06,210 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-11-25 22:31:06,210 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-11-25 22:31:06,210 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-11-25 22:31:06,211 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-11-25 22:31:06,211 INFO L138 SettingsManager]: * sizeof long double=12 [2022-11-25 22:31:06,212 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-11-25 22:31:06,212 INFO L138 SettingsManager]: * Use constant arrays=true [2022-11-25 22:31:06,212 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-11-25 22:31:06,212 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-11-25 22:31:06,213 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-11-25 22:31:06,213 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:31:06,213 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-11-25 22:31:06,214 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2022-11-25 22:31:06,214 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-11-25 22:31:06,214 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-11-25 22:31:06,214 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2022-11-25 22:31:06,215 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-11-25 22:31:06,215 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-11-25 22:31:06,215 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2022-11-25 22:31:06,215 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_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e7c9485412041f5ced738777edbcc586e5ce326d6f265b136a50fe41e5db19fb [2022-11-25 22:31:06,490 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-11-25 22:31:06,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-11-25 22:31:06,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-11-25 22:31:06,515 INFO L271 PluginConnector]: Initializing CDTParser... [2022-11-25 22:31:06,515 INFO L275 PluginConnector]: CDTParser initialized [2022-11-25 22:31:06,517 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/../../sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-11-25 22:31:09,489 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-11-25 22:31:09,839 INFO L351 CDTParser]: Found 1 translation units. [2022-11-25 22:31:09,840 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c [2022-11-25 22:31:09,860 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/data/04760674c/ee70a0336a4e4490a2d5eeb167246793/FLAGb3b21dfee [2022-11-25 22:31:09,877 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/data/04760674c/ee70a0336a4e4490a2d5eeb167246793 [2022-11-25 22:31:09,880 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-11-25 22:31:09,882 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-11-25 22:31:09,883 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-11-25 22:31:09,884 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-11-25 22:31:09,888 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-11-25 22:31:09,889 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:31:09" (1/1) ... [2022-11-25 22:31:09,891 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7dc2a031 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:09, skipping insertion in model container [2022-11-25 22:31:09,892 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.11 10:31:09" (1/1) ... [2022-11-25 22:31:09,901 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-11-25 22:31:09,990 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-11-25 22:31:10,164 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2022-11-25 22:31:10,598 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:31:10,610 INFO L203 MainTranslator]: Completed pre-run [2022-11-25 22:31:10,623 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/sv-benchmarks/c/product-lines/elevator_spec13_product32.cil.c[1546,1559] [2022-11-25 22:31:10,722 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-11-25 22:31:10,763 INFO L208 MainTranslator]: Completed translation [2022-11-25 22:31:10,763 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10 WrapperNode [2022-11-25 22:31:10,764 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-11-25 22:31:10,765 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-11-25 22:31:10,765 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-11-25 22:31:10,765 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-11-25 22:31:10,773 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,799 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,855 INFO L138 Inliner]: procedures = 97, calls = 354, calls flagged for inlining = 30, calls inlined = 26, statements flattened = 938 [2022-11-25 22:31:10,855 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-11-25 22:31:10,856 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-11-25 22:31:10,856 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-11-25 22:31:10,857 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-11-25 22:31:10,867 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,876 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,899 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,945 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,951 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,972 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:10,982 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-11-25 22:31:10,984 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-11-25 22:31:10,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-11-25 22:31:10,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-11-25 22:31:10,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (1/1) ... [2022-11-25 22:31:11,003 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-11-25 22:31:11,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:11,041 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-11-25 22:31:11,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-11-25 22:31:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentHeading [2022-11-25 22:31:11,104 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentHeading [2022-11-25 22:31:11,104 INFO L130 BoogieDeclarations]: Found specification of procedure existInLiftCallsInDirection [2022-11-25 22:31:11,104 INFO L138 BoogieDeclarations]: Found implementation of procedure existInLiftCallsInDirection [2022-11-25 22:31:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure enterElevator [2022-11-25 22:31:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure enterElevator [2022-11-25 22:31:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection [2022-11-25 22:31:11,105 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection [2022-11-25 22:31:11,105 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 22:31:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedInDirection__wrappee__empty [2022-11-25 22:31:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2022-11-25 22:31:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2022-11-25 22:31:11,106 INFO L130 BoogieDeclarations]: Found specification of procedure getDestination [2022-11-25 22:31:11,106 INFO L138 BoogieDeclarations]: Found implementation of procedure getDestination [2022-11-25 22:31:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure isBlocked [2022-11-25 22:31:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure isBlocked [2022-11-25 22:31:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure getCurrentFloorID [2022-11-25 22:31:11,107 INFO L138 BoogieDeclarations]: Found implementation of procedure getCurrentFloorID [2022-11-25 22:31:11,107 INFO L130 BoogieDeclarations]: Found specification of procedure buttonForFloorIsPressed [2022-11-25 22:31:11,108 INFO L138 BoogieDeclarations]: Found implementation of procedure buttonForFloorIsPressed [2022-11-25 22:31:11,108 INFO L130 BoogieDeclarations]: Found specification of procedure pressInLiftFloorButton [2022-11-25 22:31:11,108 INFO L138 BoogieDeclarations]: Found implementation of procedure pressInLiftFloorButton [2022-11-25 22:31:11,109 INFO L130 BoogieDeclarations]: Found specification of procedure leaveElevator [2022-11-25 22:31:11,110 INFO L138 BoogieDeclarations]: Found implementation of procedure leaveElevator [2022-11-25 22:31:11,110 INFO L130 BoogieDeclarations]: Found specification of procedure angelinaCall [2022-11-25 22:31:11,111 INFO L138 BoogieDeclarations]: Found implementation of procedure angelinaCall [2022-11-25 22:31:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-11-25 22:31:11,111 INFO L130 BoogieDeclarations]: Found specification of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-25 22:31:11,111 INFO L138 BoogieDeclarations]: Found implementation of procedure stopRequestedAtCurrentFloor__wrappee__twothirdsfull [2022-11-25 22:31:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure getWeight [2022-11-25 22:31:11,112 INFO L138 BoogieDeclarations]: Found implementation of procedure getWeight [2022-11-25 22:31:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure isExecutiveFloorCalling [2022-11-25 22:31:11,112 INFO L138 BoogieDeclarations]: Found implementation of procedure isExecutiveFloorCalling [2022-11-25 22:31:11,112 INFO L130 BoogieDeclarations]: Found specification of procedure bobCall [2022-11-25 22:31:11,113 INFO L138 BoogieDeclarations]: Found implementation of procedure bobCall [2022-11-25 22:31:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure getReverseHeading [2022-11-25 22:31:11,113 INFO L138 BoogieDeclarations]: Found implementation of procedure getReverseHeading [2022-11-25 22:31:11,113 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2022-11-25 22:31:11,113 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2022-11-25 22:31:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2022-11-25 22:31:11,114 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2022-11-25 22:31:11,114 INFO L130 BoogieDeclarations]: Found specification of procedure isTopFloor [2022-11-25 22:31:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure isTopFloor [2022-11-25 22:31:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure resetCallOnFloor [2022-11-25 22:31:11,115 INFO L138 BoogieDeclarations]: Found implementation of procedure resetCallOnFloor [2022-11-25 22:31:11,115 INFO L130 BoogieDeclarations]: Found specification of procedure initPersonOnFloor [2022-11-25 22:31:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure initPersonOnFloor [2022-11-25 22:31:11,116 INFO L130 BoogieDeclarations]: Found specification of procedure removePersonFromFloor [2022-11-25 22:31:11,116 INFO L138 BoogieDeclarations]: Found implementation of procedure removePersonFromFloor [2022-11-25 22:31:11,117 INFO L130 BoogieDeclarations]: Found specification of procedure getOrigin [2022-11-25 22:31:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure getOrigin [2022-11-25 22:31:11,118 INFO L130 BoogieDeclarations]: Found specification of procedure continueInDirection [2022-11-25 22:31:11,118 INFO L138 BoogieDeclarations]: Found implementation of procedure continueInDirection [2022-11-25 22:31:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-11-25 22:31:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure isPersonOnFloor [2022-11-25 22:31:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure isPersonOnFloor [2022-11-25 22:31:11,119 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-11-25 22:31:11,119 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-11-25 22:31:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure isFloorCalling [2022-11-25 22:31:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure isFloorCalling [2022-11-25 22:31:11,120 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift__wrappee__executivefloor [2022-11-25 22:31:11,120 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift__wrappee__executivefloor [2022-11-25 22:31:11,343 INFO L235 CfgBuilder]: Building ICFG [2022-11-25 22:31:11,345 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-11-25 22:31:12,665 INFO L276 CfgBuilder]: Performing block encoding [2022-11-25 22:31:13,563 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-11-25 22:31:13,564 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-11-25 22:31:13,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:31:13 BoogieIcfgContainer [2022-11-25 22:31:13,568 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-11-25 22:31:13,570 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-11-25 22:31:13,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-11-25 22:31:13,573 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-11-25 22:31:13,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.11 10:31:09" (1/3) ... [2022-11-25 22:31:13,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5e7fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:31:13, skipping insertion in model container [2022-11-25 22:31:13,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.11 10:31:10" (2/3) ... [2022-11-25 22:31:13,575 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e5e7fe4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.11 10:31:13, skipping insertion in model container [2022-11-25 22:31:13,575 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.11 10:31:13" (3/3) ... [2022-11-25 22:31:13,577 INFO L112 eAbstractionObserver]: Analyzing ICFG elevator_spec13_product32.cil.c [2022-11-25 22:31:13,597 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-11-25 22:31:13,598 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-11-25 22:31:13,658 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-11-25 22:31:13,664 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;@2dbac266, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-11-25 22:31:13,665 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-11-25 22:31:13,672 INFO L276 IsEmpty]: Start isEmpty. Operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) [2022-11-25 22:31:13,689 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2022-11-25 22:31:13,690 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:13,690 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:13,691 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:13,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:13,697 INFO L85 PathProgramCache]: Analyzing trace with hash -2089968167, now seen corresponding path program 1 times [2022-11-25 22:31:13,707 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:13,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [233453490] [2022-11-25 22:31:13,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:13,708 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:14,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:14,720 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:14,721 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:14,721 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [233453490] [2022-11-25 22:31:14,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [233453490] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:14,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:14,723 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-11-25 22:31:14,725 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1672941092] [2022-11-25 22:31:14,726 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:14,732 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-11-25 22:31:14,733 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:14,787 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-11-25 22:31:14,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:31:14,796 INFO L87 Difference]: Start difference. First operand has 443 states, 302 states have (on average 1.576158940397351) internal successors, (476), 322 states have internal predecessors, (476), 110 states have call successors, (110), 29 states have call predecessors, (110), 29 states have return successors, (110), 106 states have call predecessors, (110), 110 states have call successors, (110) Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:31:15,408 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:15,409 INFO L93 Difference]: Finished difference Result 1295 states and 2073 transitions. [2022-11-25 22:31:15,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-11-25 22:31:15,411 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) Word has length 58 [2022-11-25 22:31:15,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:15,440 INFO L225 Difference]: With dead ends: 1295 [2022-11-25 22:31:15,441 INFO L226 Difference]: Without dead ends: 857 [2022-11-25 22:31:15,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-11-25 22:31:15,457 INFO L413 NwaCegarLoop]: 749 mSDtfsCounter, 661 mSDsluCounter, 623 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 661 SdHoareTripleChecker+Valid, 1372 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:15,463 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [661 Valid, 1372 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-11-25 22:31:15,483 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 857 states. [2022-11-25 22:31:15,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 857 to 819. [2022-11-25 22:31:15,593 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 819 states, 577 states have (on average 1.5701906412478337) internal successors, (906), 604 states have internal predecessors, (906), 192 states have call successors, (192), 52 states have call predecessors, (192), 49 states have return successors, (195), 177 states have call predecessors, (195), 188 states have call successors, (195) [2022-11-25 22:31:15,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 819 states to 819 states and 1293 transitions. [2022-11-25 22:31:15,603 INFO L78 Accepts]: Start accepts. Automaton has 819 states and 1293 transitions. Word has length 58 [2022-11-25 22:31:15,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:15,603 INFO L495 AbstractCegarLoop]: Abstraction has 819 states and 1293 transitions. [2022-11-25 22:31:15,604 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 3 states have call successors, (11), 3 states have call predecessors, (11), 1 states have return successors, (9), 3 states have call predecessors, (9), 3 states have call successors, (9) [2022-11-25 22:31:15,604 INFO L276 IsEmpty]: Start isEmpty. Operand 819 states and 1293 transitions. [2022-11-25 22:31:15,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 102 [2022-11-25 22:31:15,613 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:15,613 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:15,614 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-11-25 22:31:15,614 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:15,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:15,615 INFO L85 PathProgramCache]: Analyzing trace with hash -633536550, now seen corresponding path program 1 times [2022-11-25 22:31:15,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:15,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1499722935] [2022-11-25 22:31:15,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:15,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:15,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:16,155 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 22:31:16,155 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:16,156 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1499722935] [2022-11-25 22:31:16,156 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1499722935] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:16,156 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:16,157 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-11-25 22:31:16,157 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [163548545] [2022-11-25 22:31:16,157 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:16,159 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:16,159 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:16,160 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:16,160 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:31:16,160 INFO L87 Difference]: Start difference. First operand 819 states and 1293 transitions. Second operand has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 22:31:16,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:16,523 INFO L93 Difference]: Finished difference Result 2032 states and 3200 transitions. [2022-11-25 22:31:16,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:31:16,528 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) Word has length 101 [2022-11-25 22:31:16,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:16,544 INFO L225 Difference]: With dead ends: 2032 [2022-11-25 22:31:16,544 INFO L226 Difference]: Without dead ends: 1228 [2022-11-25 22:31:16,554 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:16,557 INFO L413 NwaCegarLoop]: 823 mSDtfsCounter, 520 mSDsluCounter, 1229 mSDsCounter, 0 mSdLazyCounter, 123 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 526 SdHoareTripleChecker+Valid, 2052 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 123 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:16,557 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [526 Valid, 2052 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 123 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:31:16,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1228 states. [2022-11-25 22:31:16,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1228 to 1212. [2022-11-25 22:31:16,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1212 states, 855 states have (on average 1.535672514619883) internal successors, (1313), 883 states have internal predecessors, (1313), 277 states have call successors, (277), 80 states have call predecessors, (277), 79 states have return successors, (305), 262 states have call predecessors, (305), 271 states have call successors, (305) [2022-11-25 22:31:16,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1212 states to 1212 states and 1895 transitions. [2022-11-25 22:31:16,719 INFO L78 Accepts]: Start accepts. Automaton has 1212 states and 1895 transitions. Word has length 101 [2022-11-25 22:31:16,719 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:16,720 INFO L495 AbstractCegarLoop]: Abstraction has 1212 states and 1895 transitions. [2022-11-25 22:31:16,720 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.75) internal successors, (51), 4 states have internal predecessors, (51), 3 states have call successors, (19), 3 states have call predecessors, (19), 1 states have return successors, (17), 3 states have call predecessors, (17), 3 states have call successors, (17) [2022-11-25 22:31:16,720 INFO L276 IsEmpty]: Start isEmpty. Operand 1212 states and 1895 transitions. [2022-11-25 22:31:16,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2022-11-25 22:31:16,730 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:16,730 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:16,731 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-11-25 22:31:16,731 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:16,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:16,742 INFO L85 PathProgramCache]: Analyzing trace with hash -2057589460, now seen corresponding path program 1 times [2022-11-25 22:31:16,743 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:16,743 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [355263343] [2022-11-25 22:31:16,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:16,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:16,838 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:17,209 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2022-11-25 22:31:17,210 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:17,210 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [355263343] [2022-11-25 22:31:17,210 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [355263343] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:17,210 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:31:17,210 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-11-25 22:31:17,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [369412278] [2022-11-25 22:31:17,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:17,211 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:31:17,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:17,212 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:31:17,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:31:17,212 INFO L87 Difference]: Start difference. First operand 1212 states and 1895 transitions. Second operand has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 22:31:20,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:20,840 INFO L93 Difference]: Finished difference Result 3553 states and 5608 transitions. [2022-11-25 22:31:20,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2022-11-25 22:31:20,841 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) Word has length 102 [2022-11-25 22:31:20,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:20,862 INFO L225 Difference]: With dead ends: 3553 [2022-11-25 22:31:20,862 INFO L226 Difference]: Without dead ends: 2358 [2022-11-25 22:31:20,872 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:31:20,873 INFO L413 NwaCegarLoop]: 383 mSDtfsCounter, 1334 mSDsluCounter, 1202 mSDsCounter, 0 mSdLazyCounter, 3468 mSolverCounterSat, 487 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1437 SdHoareTripleChecker+Valid, 1585 SdHoareTripleChecker+Invalid, 3955 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 487 IncrementalHoareTripleChecker+Valid, 3468 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 3.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:20,874 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1437 Valid, 1585 Invalid, 3955 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [487 Valid, 3468 Invalid, 0 Unknown, 0 Unchecked, 3.2s Time] [2022-11-25 22:31:20,878 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2358 states. [2022-11-25 22:31:21,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2358 to 2076. [2022-11-25 22:31:21,038 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2076 states, 1469 states have (on average 1.5466303607896528) internal successors, (2272), 1520 states have internal predecessors, (2272), 467 states have call successors, (467), 138 states have call predecessors, (467), 139 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-25 22:31:21,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2076 states to 2076 states and 3262 transitions. [2022-11-25 22:31:21,124 INFO L78 Accepts]: Start accepts. Automaton has 2076 states and 3262 transitions. Word has length 102 [2022-11-25 22:31:21,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:21,125 INFO L495 AbstractCegarLoop]: Abstraction has 2076 states and 3262 transitions. [2022-11-25 22:31:21,125 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.428571428571429) internal successors, (52), 7 states have internal predecessors, (52), 4 states have call successors, (19), 4 states have call predecessors, (19), 3 states have return successors, (17), 5 states have call predecessors, (17), 4 states have call successors, (17) [2022-11-25 22:31:21,125 INFO L276 IsEmpty]: Start isEmpty. Operand 2076 states and 3262 transitions. [2022-11-25 22:31:21,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2022-11-25 22:31:21,129 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:21,130 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:21,130 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-11-25 22:31:21,130 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:21,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:21,131 INFO L85 PathProgramCache]: Analyzing trace with hash -668768586, now seen corresponding path program 1 times [2022-11-25 22:31:21,131 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:21,132 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [884424341] [2022-11-25 22:31:21,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:21,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:21,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:21,326 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:31:21,326 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:21,326 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [884424341] [2022-11-25 22:31:21,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [884424341] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:21,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1083461533] [2022-11-25 22:31:21,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:21,327 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:21,328 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:21,331 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:21,345 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-11-25 22:31:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:21,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 1585 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:21,735 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:21,786 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:21,786 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:21,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1083461533] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:21,787 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:21,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-25 22:31:21,787 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481500891] [2022-11-25 22:31:21,788 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:21,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:21,789 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:21,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:21,790 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:31:21,790 INFO L87 Difference]: Start difference. First operand 2076 states and 3262 transitions. Second operand has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:22,215 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:22,216 INFO L93 Difference]: Finished difference Result 4173 states and 6654 transitions. [2022-11-25 22:31:22,217 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:31:22,217 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 106 [2022-11-25 22:31:22,218 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:22,234 INFO L225 Difference]: With dead ends: 4173 [2022-11-25 22:31:22,234 INFO L226 Difference]: Without dead ends: 2112 [2022-11-25 22:31:22,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-11-25 22:31:22,258 INFO L413 NwaCegarLoop]: 636 mSDtfsCounter, 85 mSDsluCounter, 1185 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 1821 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:22,259 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 1821 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:31:22,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2112 states. [2022-11-25 22:31:22,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2112 to 2112. [2022-11-25 22:31:22,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2112 states, 1499 states have (on average 1.5396931287525017) internal successors, (2308), 1550 states have internal predecessors, (2308), 467 states have call successors, (467), 144 states have call predecessors, (467), 145 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-25 22:31:22,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2112 states to 2112 states and 3298 transitions. [2022-11-25 22:31:22,414 INFO L78 Accepts]: Start accepts. Automaton has 2112 states and 3298 transitions. Word has length 106 [2022-11-25 22:31:22,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:22,417 INFO L495 AbstractCegarLoop]: Abstraction has 2112 states and 3298 transitions. [2022-11-25 22:31:22,417 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.0) internal successors, (60), 4 states have internal predecessors, (60), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:22,417 INFO L276 IsEmpty]: Start isEmpty. Operand 2112 states and 3298 transitions. [2022-11-25 22:31:22,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2022-11-25 22:31:22,423 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:22,424 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:22,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:22,632 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:22,633 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:22,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:22,634 INFO L85 PathProgramCache]: Analyzing trace with hash 1652998317, now seen corresponding path program 1 times [2022-11-25 22:31:22,634 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:22,634 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862005879] [2022-11-25 22:31:22,635 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:22,635 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:22,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:22,968 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:31:22,968 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:22,979 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862005879] [2022-11-25 22:31:22,980 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862005879] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:22,980 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1795239147] [2022-11-25 22:31:22,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:22,980 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:22,981 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:22,987 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:23,015 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-11-25 22:31:23,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:23,420 INFO L263 TraceCheckSpWp]: Trace formula consists of 1590 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:23,433 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:23,493 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 22:31:23,493 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:23,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1795239147] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:23,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:23,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-25 22:31:23,494 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431089899] [2022-11-25 22:31:23,494 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:23,496 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:23,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:23,497 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:23,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:31:23,498 INFO L87 Difference]: Start difference. First operand 2112 states and 3298 transitions. Second operand has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:23,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:23,854 INFO L93 Difference]: Finished difference Result 4227 states and 6672 transitions. [2022-11-25 22:31:23,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:31:23,855 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 108 [2022-11-25 22:31:23,856 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:23,873 INFO L225 Difference]: With dead ends: 4227 [2022-11-25 22:31:23,874 INFO L226 Difference]: Without dead ends: 2106 [2022-11-25 22:31:23,889 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:23,892 INFO L413 NwaCegarLoop]: 635 mSDtfsCounter, 91 mSDsluCounter, 1182 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 91 SdHoareTripleChecker+Valid, 1817 SdHoareTripleChecker+Invalid, 138 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:23,892 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [91 Valid, 1817 Invalid, 138 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:31:23,895 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2106 states. [2022-11-25 22:31:24,038 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2106 to 2106. [2022-11-25 22:31:24,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2106 states, 1493 states have (on average 1.5298057602143336) internal successors, (2284), 1544 states have internal predecessors, (2284), 467 states have call successors, (467), 144 states have call predecessors, (467), 145 states have return successors, (523), 444 states have call predecessors, (523), 459 states have call successors, (523) [2022-11-25 22:31:24,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2106 states to 2106 states and 3274 transitions. [2022-11-25 22:31:24,093 INFO L78 Accepts]: Start accepts. Automaton has 2106 states and 3274 transitions. Word has length 108 [2022-11-25 22:31:24,093 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:24,093 INFO L495 AbstractCegarLoop]: Abstraction has 2106 states and 3274 transitions. [2022-11-25 22:31:24,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 15.5) internal successors, (62), 4 states have internal predecessors, (62), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:24,094 INFO L276 IsEmpty]: Start isEmpty. Operand 2106 states and 3274 transitions. [2022-11-25 22:31:24,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2022-11-25 22:31:24,099 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:24,100 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:24,122 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:24,308 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:24,308 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:24,309 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:24,309 INFO L85 PathProgramCache]: Analyzing trace with hash 1521342151, now seen corresponding path program 1 times [2022-11-25 22:31:24,309 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:24,309 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1835026176] [2022-11-25 22:31:24,310 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:24,310 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:24,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:24,675 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 22:31:24,676 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:24,676 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1835026176] [2022-11-25 22:31:24,676 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1835026176] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:24,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1580657045] [2022-11-25 22:31:24,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:24,677 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:24,677 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:24,679 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:24,706 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-11-25 22:31:25,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:25,069 INFO L263 TraceCheckSpWp]: Trace formula consists of 1594 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:25,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:25,160 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:25,160 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:25,161 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1580657045] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:25,161 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:25,161 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 22:31:25,161 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13630101] [2022-11-25 22:31:25,162 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:25,162 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:25,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:25,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:25,163 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:25,163 INFO L87 Difference]: Start difference. First operand 2106 states and 3274 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:26,618 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:26,618 INFO L93 Difference]: Finished difference Result 5379 states and 8626 transitions. [2022-11-25 22:31:26,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:26,620 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 109 [2022-11-25 22:31:26,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:26,659 INFO L225 Difference]: With dead ends: 5379 [2022-11-25 22:31:26,661 INFO L226 Difference]: Without dead ends: 3288 [2022-11-25 22:31:26,685 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 107 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:31:26,687 INFO L413 NwaCegarLoop]: 788 mSDtfsCounter, 652 mSDsluCounter, 1612 mSDsCounter, 0 mSdLazyCounter, 913 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 655 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 913 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:26,687 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [655 Valid, 2400 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 913 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 22:31:26,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3288 states. [2022-11-25 22:31:26,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3288 to 3240. [2022-11-25 22:31:26,930 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3240 states, 2302 states have (on average 1.4813205907906168) internal successors, (3410), 2376 states have internal predecessors, (3410), 707 states have call successors, (707), 229 states have call predecessors, (707), 230 states have return successors, (913), 674 states have call predecessors, (913), 695 states have call successors, (913) [2022-11-25 22:31:26,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3240 states to 3240 states and 5030 transitions. [2022-11-25 22:31:26,961 INFO L78 Accepts]: Start accepts. Automaton has 3240 states and 5030 transitions. Word has length 109 [2022-11-25 22:31:26,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:26,961 INFO L495 AbstractCegarLoop]: Abstraction has 3240 states and 5030 transitions. [2022-11-25 22:31:26,961 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 5 states have internal predecessors, (63), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:26,962 INFO L276 IsEmpty]: Start isEmpty. Operand 3240 states and 5030 transitions. [2022-11-25 22:31:26,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 22:31:26,968 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:26,968 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:26,981 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:27,176 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2022-11-25 22:31:27,176 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:27,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:27,177 INFO L85 PathProgramCache]: Analyzing trace with hash 2038205392, now seen corresponding path program 1 times [2022-11-25 22:31:27,177 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:27,177 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [666350402] [2022-11-25 22:31:27,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:27,178 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:27,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:27,486 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:27,487 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [666350402] [2022-11-25 22:31:27,487 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [666350402] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:27,487 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1282716280] [2022-11-25 22:31:27,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:27,488 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:27,488 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:27,491 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:27,522 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2022-11-25 22:31:27,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:27,890 INFO L263 TraceCheckSpWp]: Trace formula consists of 1597 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:27,894 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:27,953 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 22:31:27,953 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:27,954 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1282716280] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:27,954 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:27,954 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 22:31:27,954 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1724624846] [2022-11-25 22:31:27,954 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:27,955 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:27,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:27,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:27,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:27,957 INFO L87 Difference]: Start difference. First operand 3240 states and 5030 transitions. Second operand has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:28,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:28,354 INFO L93 Difference]: Finished difference Result 6591 states and 10553 transitions. [2022-11-25 22:31:28,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-11-25 22:31:28,355 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) Word has length 110 [2022-11-25 22:31:28,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:28,386 INFO L225 Difference]: With dead ends: 6591 [2022-11-25 22:31:28,386 INFO L226 Difference]: Without dead ends: 3366 [2022-11-25 22:31:28,415 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:28,416 INFO L413 NwaCegarLoop]: 650 mSDtfsCounter, 2 mSDsluCounter, 1931 mSDsCounter, 0 mSdLazyCounter, 167 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 2581 SdHoareTripleChecker+Invalid, 176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 167 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:28,416 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 2581 Invalid, 176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 167 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:28,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3366 states. [2022-11-25 22:31:28,704 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3366 to 3304. [2022-11-25 22:31:28,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3304 states, 2356 states have (on average 1.470288624787776) internal successors, (3464), 2418 states have internal predecessors, (3464), 707 states have call successors, (707), 229 states have call predecessors, (707), 240 states have return successors, (952), 696 states have call predecessors, (952), 695 states have call successors, (952) [2022-11-25 22:31:28,741 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3304 states to 3304 states and 5123 transitions. [2022-11-25 22:31:28,742 INFO L78 Accepts]: Start accepts. Automaton has 3304 states and 5123 transitions. Word has length 110 [2022-11-25 22:31:28,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:28,743 INFO L495 AbstractCegarLoop]: Abstraction has 3304 states and 5123 transitions. [2022-11-25 22:31:28,743 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.6) internal successors, (63), 4 states have internal predecessors, (63), 2 states have call successors, (20), 2 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:28,744 INFO L276 IsEmpty]: Start isEmpty. Operand 3304 states and 5123 transitions. [2022-11-25 22:31:28,747 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 111 [2022-11-25 22:31:28,748 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:28,748 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:28,756 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:28,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2022-11-25 22:31:28,956 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:28,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:28,957 INFO L85 PathProgramCache]: Analyzing trace with hash 1335703100, now seen corresponding path program 1 times [2022-11-25 22:31:28,957 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:28,957 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1883034031] [2022-11-25 22:31:28,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:28,957 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:29,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:29,305 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:31:29,305 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1883034031] [2022-11-25 22:31:29,305 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1883034031] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:29,305 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1259088786] [2022-11-25 22:31:29,306 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:29,306 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:29,306 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:29,307 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:29,331 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2022-11-25 22:31:29,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:29,741 INFO L263 TraceCheckSpWp]: Trace formula consists of 1595 conjuncts, 8 conjunts are in the unsatisfiable core [2022-11-25 22:31:29,747 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:29,956 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2022-11-25 22:31:29,956 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:29,956 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1259088786] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:29,956 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:29,957 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 10 [2022-11-25 22:31:29,957 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1302325967] [2022-11-25 22:31:29,957 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:29,958 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-11-25 22:31:29,958 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:29,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-11-25 22:31:29,959 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:31:29,959 INFO L87 Difference]: Start difference. First operand 3304 states and 5123 transitions. Second operand has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:31,190 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:31,190 INFO L93 Difference]: Finished difference Result 7434 states and 11689 transitions. [2022-11-25 22:31:31,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-11-25 22:31:31,191 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) Word has length 110 [2022-11-25 22:31:31,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:31,226 INFO L225 Difference]: With dead ends: 7434 [2022-11-25 22:31:31,226 INFO L226 Difference]: Without dead ends: 4145 [2022-11-25 22:31:31,251 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 108 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=140, Unknown=0, NotChecked=0, Total=182 [2022-11-25 22:31:31,252 INFO L413 NwaCegarLoop]: 918 mSDtfsCounter, 784 mSDsluCounter, 2942 mSDsCounter, 0 mSdLazyCounter, 498 mSolverCounterSat, 332 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 785 SdHoareTripleChecker+Valid, 3860 SdHoareTripleChecker+Invalid, 830 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 332 IncrementalHoareTripleChecker+Valid, 498 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:31,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [785 Valid, 3860 Invalid, 830 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [332 Valid, 498 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-11-25 22:31:31,258 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4145 states. [2022-11-25 22:31:31,595 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4145 to 4057. [2022-11-25 22:31:31,618 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4057 states, 2925 states have (on average 1.4560683760683761) internal successors, (4259), 2999 states have internal predecessors, (4259), 800 states have call successors, (800), 309 states have call predecessors, (800), 331 states have return successors, (1318), 788 states have call predecessors, (1318), 780 states have call successors, (1318) [2022-11-25 22:31:31,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4057 states to 4057 states and 6377 transitions. [2022-11-25 22:31:31,649 INFO L78 Accepts]: Start accepts. Automaton has 4057 states and 6377 transitions. Word has length 110 [2022-11-25 22:31:31,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:31,650 INFO L495 AbstractCegarLoop]: Abstraction has 4057 states and 6377 transitions. [2022-11-25 22:31:31,651 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 12.2) internal successors, (61), 4 states have internal predecessors, (61), 3 states have call successors, (20), 3 states have call predecessors, (20), 4 states have return successors, (18), 4 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:31,651 INFO L276 IsEmpty]: Start isEmpty. Operand 4057 states and 6377 transitions. [2022-11-25 22:31:31,654 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2022-11-25 22:31:31,655 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:31,655 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:31,666 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:31,863 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2022-11-25 22:31:31,863 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:31,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:31,864 INFO L85 PathProgramCache]: Analyzing trace with hash 1549143828, now seen corresponding path program 1 times [2022-11-25 22:31:31,864 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:31,864 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1099225772] [2022-11-25 22:31:31,864 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:31,864 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:31,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:32,147 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:32,147 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:32,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1099225772] [2022-11-25 22:31:32,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1099225772] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:32,148 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1384548061] [2022-11-25 22:31:32,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:32,148 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:32,148 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:32,150 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:32,175 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2022-11-25 22:31:32,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:32,564 INFO L263 TraceCheckSpWp]: Trace formula consists of 1601 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:32,568 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:32,617 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2022-11-25 22:31:32,617 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:32,618 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1384548061] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:32,618 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:32,618 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [5] total 7 [2022-11-25 22:31:32,618 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [159595065] [2022-11-25 22:31:32,618 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:32,619 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:32,619 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:32,619 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:32,620 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:31:32,620 INFO L87 Difference]: Start difference. First operand 4057 states and 6377 transitions. Second operand has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:33,206 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:33,207 INFO L93 Difference]: Finished difference Result 8324 states and 13441 transitions. [2022-11-25 22:31:33,207 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:31:33,208 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 112 [2022-11-25 22:31:33,208 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:33,245 INFO L225 Difference]: With dead ends: 8324 [2022-11-25 22:31:33,246 INFO L226 Difference]: Without dead ends: 4291 [2022-11-25 22:31:33,295 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 118 GetRequests, 113 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-11-25 22:31:33,315 INFO L413 NwaCegarLoop]: 633 mSDtfsCounter, 19 mSDsluCounter, 1144 mSDsCounter, 0 mSdLazyCounter, 269 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 1777 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 269 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:33,316 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 1777 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 269 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-11-25 22:31:33,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4291 states. [2022-11-25 22:31:33,643 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4291 to 4237. [2022-11-25 22:31:33,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4237 states, 3105 states have (on average 1.4663446054750402) internal successors, (4553), 3179 states have internal predecessors, (4553), 800 states have call successors, (800), 309 states have call predecessors, (800), 331 states have return successors, (1318), 788 states have call predecessors, (1318), 780 states have call successors, (1318) [2022-11-25 22:31:33,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4237 states to 4237 states and 6671 transitions. [2022-11-25 22:31:33,680 INFO L78 Accepts]: Start accepts. Automaton has 4237 states and 6671 transitions. Word has length 112 [2022-11-25 22:31:33,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:33,680 INFO L495 AbstractCegarLoop]: Abstraction has 4237 states and 6671 transitions. [2022-11-25 22:31:33,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.25) internal successors, (65), 4 states have internal predecessors, (65), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:33,680 INFO L276 IsEmpty]: Start isEmpty. Operand 4237 states and 6671 transitions. [2022-11-25 22:31:33,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 22:31:33,685 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:33,685 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:33,693 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:33,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:33,899 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:33,900 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:33,900 INFO L85 PathProgramCache]: Analyzing trace with hash 2100745002, now seen corresponding path program 1 times [2022-11-25 22:31:33,900 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:33,900 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940431513] [2022-11-25 22:31:33,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:33,901 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:33,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:34,238 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:34,239 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:34,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940431513] [2022-11-25 22:31:34,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940431513] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:34,239 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [376687784] [2022-11-25 22:31:34,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:34,240 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:34,240 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:34,241 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:34,247 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2022-11-25 22:31:34,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:34,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:34,634 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:34,705 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:34,706 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:34,706 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [376687784] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:34,706 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:34,706 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 22:31:34,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2145122267] [2022-11-25 22:31:34,709 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:34,709 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:34,709 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:34,710 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:34,710 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:34,711 INFO L87 Difference]: Start difference. First operand 4237 states and 6671 transitions. Second operand has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:36,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:36,506 INFO L93 Difference]: Finished difference Result 10658 states and 17887 transitions. [2022-11-25 22:31:36,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:36,507 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 114 [2022-11-25 22:31:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:36,574 INFO L225 Difference]: With dead ends: 10658 [2022-11-25 22:31:36,574 INFO L226 Difference]: Without dead ends: 7268 [2022-11-25 22:31:36,621 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 114 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:31:36,622 INFO L413 NwaCegarLoop]: 815 mSDtfsCounter, 660 mSDsluCounter, 1650 mSDsCounter, 0 mSdLazyCounter, 926 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 662 SdHoareTripleChecker+Valid, 2465 SdHoareTripleChecker+Invalid, 956 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 926 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:36,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [662 Valid, 2465 Invalid, 956 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 926 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2022-11-25 22:31:36,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7268 states. [2022-11-25 22:31:37,273 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7268 to 7119. [2022-11-25 22:31:37,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7119 states, 5232 states have (on average 1.4608180428134556) internal successors, (7643), 5351 states have internal predecessors, (7643), 1328 states have call successors, (1328), 524 states have call predecessors, (1328), 558 states have return successors, (2716), 1309 states have call predecessors, (2716), 1294 states have call successors, (2716) [2022-11-25 22:31:37,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7119 states to 7119 states and 11687 transitions. [2022-11-25 22:31:37,348 INFO L78 Accepts]: Start accepts. Automaton has 7119 states and 11687 transitions. Word has length 114 [2022-11-25 22:31:37,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:37,350 INFO L495 AbstractCegarLoop]: Abstraction has 7119 states and 11687 transitions. [2022-11-25 22:31:37,351 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.6) internal successors, (68), 5 states have internal predecessors, (68), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:37,351 INFO L276 IsEmpty]: Start isEmpty. Operand 7119 states and 11687 transitions. [2022-11-25 22:31:37,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 115 [2022-11-25 22:31:37,355 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:37,355 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:37,368 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:37,562 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2022-11-25 22:31:37,563 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:37,563 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:37,564 INFO L85 PathProgramCache]: Analyzing trace with hash -164560108, now seen corresponding path program 1 times [2022-11-25 22:31:37,564 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:37,564 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [505750131] [2022-11-25 22:31:37,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:37,564 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:37,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:37,757 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:37,757 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:37,757 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [505750131] [2022-11-25 22:31:37,758 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [505750131] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:37,758 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1250886216] [2022-11-25 22:31:37,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:37,758 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:37,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:37,760 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:37,783 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2022-11-25 22:31:38,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:38,177 INFO L263 TraceCheckSpWp]: Trace formula consists of 1602 conjuncts, 3 conjunts are in the unsatisfiable core [2022-11-25 22:31:38,181 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:38,195 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2022-11-25 22:31:38,195 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:38,195 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1250886216] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:38,195 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:38,196 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 4 [2022-11-25 22:31:38,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [214056893] [2022-11-25 22:31:38,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:38,197 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-11-25 22:31:38,197 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:38,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-11-25 22:31:38,198 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:31:38,198 INFO L87 Difference]: Start difference. First operand 7119 states and 11687 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:38,958 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:38,958 INFO L93 Difference]: Finished difference Result 14426 states and 24645 transitions. [2022-11-25 22:31:38,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-11-25 22:31:38,959 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) Word has length 114 [2022-11-25 22:31:38,962 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:39,017 INFO L225 Difference]: With dead ends: 14426 [2022-11-25 22:31:39,017 INFO L226 Difference]: Without dead ends: 7331 [2022-11-25 22:31:39,094 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 114 SyntacticMatches, 1 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-11-25 22:31:39,095 INFO L413 NwaCegarLoop]: 647 mSDtfsCounter, 4 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 1903 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:39,095 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 1903 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-11-25 22:31:39,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7331 states. [2022-11-25 22:31:39,560 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7331 to 7151. [2022-11-25 22:31:39,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7151 states, 5264 states have (on average 1.4466185410334347) internal successors, (7615), 5383 states have internal predecessors, (7615), 1328 states have call successors, (1328), 524 states have call predecessors, (1328), 558 states have return successors, (2716), 1309 states have call predecessors, (2716), 1294 states have call successors, (2716) [2022-11-25 22:31:39,653 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7151 states to 7151 states and 11659 transitions. [2022-11-25 22:31:39,656 INFO L78 Accepts]: Start accepts. Automaton has 7151 states and 11659 transitions. Word has length 114 [2022-11-25 22:31:39,656 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:39,656 INFO L495 AbstractCegarLoop]: Abstraction has 7151 states and 11659 transitions. [2022-11-25 22:31:39,657 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 2 states have call successors, (20), 2 states have call predecessors, (20), 2 states have return successors, (18), 2 states have call predecessors, (18), 2 states have call successors, (18) [2022-11-25 22:31:39,657 INFO L276 IsEmpty]: Start isEmpty. Operand 7151 states and 11659 transitions. [2022-11-25 22:31:39,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2022-11-25 22:31:39,662 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:39,662 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:39,677 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:39,871 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:39,871 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:39,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:39,873 INFO L85 PathProgramCache]: Analyzing trace with hash -251814407, now seen corresponding path program 1 times [2022-11-25 22:31:39,874 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:39,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [35671325] [2022-11-25 22:31:39,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:39,935 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:39,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:40,159 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:40,159 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:40,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [35671325] [2022-11-25 22:31:40,160 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [35671325] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:40,160 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1917041450] [2022-11-25 22:31:40,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:40,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:40,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:40,162 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:40,183 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2022-11-25 22:31:40,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:40,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 1604 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:40,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:40,640 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:40,641 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1917041450] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:40,641 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:40,641 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 22:31:40,641 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575288828] [2022-11-25 22:31:40,642 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:40,642 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:40,642 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:40,643 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:40,643 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:40,644 INFO L87 Difference]: Start difference. First operand 7151 states and 11659 transitions. Second operand has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:42,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:42,577 INFO L93 Difference]: Finished difference Result 16422 states and 28187 transitions. [2022-11-25 22:31:42,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:42,578 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 115 [2022-11-25 22:31:42,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:42,671 INFO L225 Difference]: With dead ends: 16422 [2022-11-25 22:31:42,672 INFO L226 Difference]: Without dead ends: 10158 [2022-11-25 22:31:42,792 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:31:42,793 INFO L413 NwaCegarLoop]: 819 mSDtfsCounter, 693 mSDsluCounter, 1400 mSDsCounter, 0 mSdLazyCounter, 889 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 695 SdHoareTripleChecker+Valid, 2219 SdHoareTripleChecker+Invalid, 919 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 889 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:42,793 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [695 Valid, 2219 Invalid, 919 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 889 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:31:42,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10158 states. [2022-11-25 22:31:43,822 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10158 to 10026. [2022-11-25 22:31:43,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10026 states, 7384 states have (on average 1.4442036836403034) internal successors, (10664), 7548 states have internal predecessors, (10664), 1856 states have call successors, (1856), 739 states have call predecessors, (1856), 785 states have return successors, (4476), 1830 states have call predecessors, (4476), 1808 states have call successors, (4476) [2022-11-25 22:31:43,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10026 states to 10026 states and 16996 transitions. [2022-11-25 22:31:43,955 INFO L78 Accepts]: Start accepts. Automaton has 10026 states and 16996 transitions. Word has length 115 [2022-11-25 22:31:43,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:43,955 INFO L495 AbstractCegarLoop]: Abstraction has 10026 states and 16996 transitions. [2022-11-25 22:31:43,956 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 13.8) internal successors, (69), 5 states have internal predecessors, (69), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:43,956 INFO L276 IsEmpty]: Start isEmpty. Operand 10026 states and 16996 transitions. [2022-11-25 22:31:43,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2022-11-25 22:31:43,961 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:43,962 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:43,976 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:44,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2022-11-25 22:31:44,171 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:44,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:44,172 INFO L85 PathProgramCache]: Analyzing trace with hash 927561536, now seen corresponding path program 1 times [2022-11-25 22:31:44,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:44,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [510727612] [2022-11-25 22:31:44,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:44,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:44,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:44,442 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:44,443 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:44,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [510727612] [2022-11-25 22:31:44,443 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [510727612] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:44,443 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [310564420] [2022-11-25 22:31:44,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:44,444 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:44,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:44,455 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:44,466 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2022-11-25 22:31:44,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:44,895 INFO L263 TraceCheckSpWp]: Trace formula consists of 1605 conjuncts, 4 conjunts are in the unsatisfiable core [2022-11-25 22:31:44,900 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:44,983 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:44,984 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:31:44,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [310564420] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:31:44,984 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:31:44,985 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [5] total 8 [2022-11-25 22:31:44,985 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1895682703] [2022-11-25 22:31:44,985 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:31:44,986 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-11-25 22:31:44,986 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:31:44,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-11-25 22:31:44,987 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-11-25 22:31:44,987 INFO L87 Difference]: Start difference. First operand 10026 states and 16996 transitions. Second operand has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:47,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:31:47,046 INFO L93 Difference]: Finished difference Result 21594 states and 37880 transitions. [2022-11-25 22:31:47,047 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-11-25 22:31:47,047 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) Word has length 116 [2022-11-25 22:31:47,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:31:47,157 INFO L225 Difference]: With dead ends: 21594 [2022-11-25 22:31:47,158 INFO L226 Difference]: Without dead ends: 12491 [2022-11-25 22:31:47,287 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 123 GetRequests, 116 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2022-11-25 22:31:47,289 INFO L413 NwaCegarLoop]: 792 mSDtfsCounter, 714 mSDsluCounter, 1372 mSDsCounter, 0 mSdLazyCounter, 870 mSolverCounterSat, 26 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 716 SdHoareTripleChecker+Valid, 2164 SdHoareTripleChecker+Invalid, 896 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 26 IncrementalHoareTripleChecker+Valid, 870 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2022-11-25 22:31:47,289 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [716 Valid, 2164 Invalid, 896 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [26 Valid, 870 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2022-11-25 22:31:47,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12491 states. [2022-11-25 22:31:48,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12491 to 12060. [2022-11-25 22:31:48,262 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12060 states, 8802 states have (on average 1.442853896841627) internal successors, (12700), 9014 states have internal predecessors, (12700), 2302 states have call successors, (2302), 915 states have call predecessors, (2302), 955 states have return successors, (5911), 2248 states have call predecessors, (5911), 2244 states have call successors, (5911) [2022-11-25 22:31:48,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12060 states to 12060 states and 20913 transitions. [2022-11-25 22:31:48,413 INFO L78 Accepts]: Start accepts. Automaton has 12060 states and 20913 transitions. Word has length 116 [2022-11-25 22:31:48,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:31:48,414 INFO L495 AbstractCegarLoop]: Abstraction has 12060 states and 20913 transitions. [2022-11-25 22:31:48,414 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 14.0) internal successors, (70), 5 states have internal predecessors, (70), 3 states have call successors, (20), 3 states have call predecessors, (20), 3 states have return successors, (18), 3 states have call predecessors, (18), 3 states have call successors, (18) [2022-11-25 22:31:48,414 INFO L276 IsEmpty]: Start isEmpty. Operand 12060 states and 20913 transitions. [2022-11-25 22:31:48,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2022-11-25 22:31:48,419 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:31:48,420 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:31:48,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2022-11-25 22:31:48,637 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2022-11-25 22:31:48,637 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:31:48,637 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:31:48,637 INFO L85 PathProgramCache]: Analyzing trace with hash -2008148255, now seen corresponding path program 1 times [2022-11-25 22:31:48,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:31:48,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1492131460] [2022-11-25 22:31:48,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:48,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:31:48,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:48,857 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:31:48,857 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:31:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1492131460] [2022-11-25 22:31:48,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1492131460] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:31:48,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1400148927] [2022-11-25 22:31:48,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:31:48,858 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:31:48,859 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:31:48,860 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:31:48,883 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2022-11-25 22:31:49,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:31:49,271 INFO L263 TraceCheckSpWp]: Trace formula consists of 1603 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:31:49,276 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:31:49,395 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:31:49,396 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:31:49,717 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:31:49,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1400148927] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:31:49,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [236112383] [2022-11-25 22:31:49,755 INFO L159 IcfgInterpreter]: Started Sifa with 97 locations of interest [2022-11-25 22:31:49,767 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:31:49,771 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:31:49,779 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:31:49,779 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:31:57,786 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-25 22:32:04,403 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 580 for LOIs [2022-11-25 22:32:16,566 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 455 for LOIs [2022-11-25 22:32:19,831 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 510 for LOIs [2022-11-25 22:32:22,726 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 512 for LOIs [2022-11-25 22:32:23,201 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 509 for LOIs [2022-11-25 22:32:23,598 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 44 for LOIs [2022-11-25 22:32:23,622 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 460 for LOIs [2022-11-25 22:32:24,749 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 456 for LOIs [2022-11-25 22:32:24,845 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 445 for LOIs [2022-11-25 22:32:24,937 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2022-11-25 22:32:28,042 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 800 for LOIs [2022-11-25 22:33:01,513 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 649 for LOIs [2022-11-25 22:33:02,139 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:33:18,835 WARN L233 SmtUtils]: Spent 11.30s on a formula simplification. DAG size of input: 649 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:30,531 WARN L233 SmtUtils]: Spent 11.44s on a formula simplification. DAG size of input: 689 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:33:55,299 WARN L233 SmtUtils]: Spent 15.07s on a formula simplification. DAG size of input: 800 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:14,153 WARN L233 SmtUtils]: Spent 18.02s on a formula simplification. DAG size of input: 897 DAG size of output: 776 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:48,019 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 624 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:34:54,352 WARN L233 SmtUtils]: Spent 5.98s on a formula simplification. DAG size of input: 631 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:10,782 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification. DAG size of input: 510 DAG size of output: 449 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:21,144 WARN L233 SmtUtils]: Spent 9.93s on a formula simplification. DAG size of input: 512 DAG size of output: 452 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:31,635 WARN L233 SmtUtils]: Spent 10.02s on a formula simplification. DAG size of input: 552 DAG size of output: 460 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:38,451 WARN L233 SmtUtils]: Spent 5.81s on a formula simplification. DAG size of input: 620 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:44,727 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification. DAG size of input: 620 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:51,088 WARN L233 SmtUtils]: Spent 5.88s on a formula simplification. DAG size of input: 622 DAG size of output: 596 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:35:57,686 WARN L233 SmtUtils]: Spent 5.62s on a formula simplification. DAG size of input: 513 DAG size of output: 481 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:04,147 WARN L233 SmtUtils]: Spent 5.94s on a formula simplification. DAG size of input: 626 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:10,597 WARN L233 SmtUtils]: Spent 5.93s on a formula simplification. DAG size of input: 624 DAG size of output: 598 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:17,164 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 630 DAG size of output: 602 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:23,839 WARN L233 SmtUtils]: Spent 6.12s on a formula simplification. DAG size of input: 635 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:36:30,437 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 631 DAG size of output: 604 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:06,909 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:13,834 WARN L233 SmtUtils]: Spent 6.27s on a formula simplification. DAG size of input: 645 DAG size of output: 613 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:37:49,162 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSifa [236112383] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:37:49,163 INFO L184 FreeRefinementEngine]: Found 1 perfect and 3 imperfect interpolant sequences. [2022-11-25 22:37:49,163 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [61] imperfect sequences [5, 6, 7] total 74 [2022-11-25 22:37:49,163 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728671734] [2022-11-25 22:37:49,164 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:37:49,164 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 62 states [2022-11-25 22:37:49,164 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:37:49,165 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 62 interpolants. [2022-11-25 22:37:49,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=463, Invalid=4939, Unknown=0, NotChecked=0, Total=5402 [2022-11-25 22:37:49,167 INFO L87 Difference]: Start difference. First operand 12060 states and 20913 transitions. Second operand has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-25 22:37:57,235 WARN L233 SmtUtils]: Spent 6.46s on a formula simplification. DAG size of input: 591 DAG size of output: 551 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:04,222 WARN L233 SmtUtils]: Spent 6.59s on a formula simplification. DAG size of input: 603 DAG size of output: 558 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:12,817 WARN L233 SmtUtils]: Spent 7.97s on a formula simplification. DAG size of input: 592 DAG size of output: 553 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:23,665 WARN L233 SmtUtils]: Spent 10.35s on a formula simplification. DAG size of input: 776 DAG size of output: 566 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:29,989 WARN L233 SmtUtils]: Spent 5.39s on a formula simplification. DAG size of input: 605 DAG size of output: 586 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:39,285 WARN L233 SmtUtils]: Spent 7.85s on a formula simplification. DAG size of input: 604 DAG size of output: 581 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:47,742 WARN L233 SmtUtils]: Spent 8.00s on a formula simplification. DAG size of input: 610 DAG size of output: 587 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:38:53,862 WARN L233 SmtUtils]: Spent 5.53s on a formula simplification. DAG size of input: 609 DAG size of output: 588 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:00,583 WARN L233 SmtUtils]: Spent 5.32s on a formula simplification. DAG size of input: 638 DAG size of output: 603 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:14,267 WARN L233 SmtUtils]: Spent 9.56s on a formula simplification. DAG size of input: 467 DAG size of output: 458 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:39:35,373 WARN L233 SmtUtils]: Spent 6.20s on a formula simplification. DAG size of input: 631 DAG size of output: 608 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:40:21,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:21,654 INFO L93 Difference]: Finished difference Result 24486 states and 42387 transitions. [2022-11-25 22:40:21,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 69 states. [2022-11-25 22:40:21,655 INFO L78 Accepts]: Start accepts. Automaton has has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) Word has length 117 [2022-11-25 22:40:21,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:21,746 INFO L225 Difference]: With dead ends: 24486 [2022-11-25 22:40:21,747 INFO L226 Difference]: Without dead ends: 12449 [2022-11-25 22:40:21,896 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 365 GetRequests, 273 SyntacticMatches, 9 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2519 ImplicationChecksByTransitivity, 369.7s TimeCoverageRelationStatistics Valid=558, Invalid=6582, Unknown=0, NotChecked=0, Total=7140 [2022-11-25 22:40:21,897 INFO L413 NwaCegarLoop]: 552 mSDtfsCounter, 587 mSDsluCounter, 7320 mSDsCounter, 0 mSdLazyCounter, 13319 mSolverCounterSat, 158 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 610 SdHoareTripleChecker+Valid, 7872 SdHoareTripleChecker+Invalid, 13477 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.2s SdHoareTripleChecker+Time, 158 IncrementalHoareTripleChecker+Valid, 13319 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 68.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:21,898 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [610 Valid, 7872 Invalid, 13477 Unknown, 0 Unchecked, 0.2s Time], IncrementalHoareTripleChecker [158 Valid, 13319 Invalid, 0 Unknown, 0 Unchecked, 68.4s Time] [2022-11-25 22:40:21,911 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12449 states. [2022-11-25 22:40:23,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12449 to 12372. [2022-11-25 22:40:23,143 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12372 states, 9041 states have (on average 1.4398849684769384) internal successors, (13018), 9257 states have internal predecessors, (13018), 2345 states have call successors, (2345), 936 states have call predecessors, (2345), 985 states have return successors, (5969), 2296 states have call predecessors, (5969), 2287 states have call successors, (5969) [2022-11-25 22:40:23,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12372 states to 12372 states and 21332 transitions. [2022-11-25 22:40:23,283 INFO L78 Accepts]: Start accepts. Automaton has 12372 states and 21332 transitions. Word has length 117 [2022-11-25 22:40:23,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:23,284 INFO L495 AbstractCegarLoop]: Abstraction has 12372 states and 21332 transitions. [2022-11-25 22:40:23,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 62 states, 48 states have (on average 1.375) internal successors, (66), 41 states have internal predecessors, (66), 18 states have call successors, (20), 13 states have call predecessors, (20), 12 states have return successors, (18), 17 states have call predecessors, (18), 17 states have call successors, (18) [2022-11-25 22:40:23,285 INFO L276 IsEmpty]: Start isEmpty. Operand 12372 states and 21332 transitions. [2022-11-25 22:40:23,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 22:40:23,291 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:23,291 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:23,305 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2022-11-25 22:40:23,500 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2022-11-25 22:40:23,501 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:23,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:23,501 INFO L85 PathProgramCache]: Analyzing trace with hash 489427958, now seen corresponding path program 1 times [2022-11-25 22:40:23,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:23,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590727748] [2022-11-25 22:40:23,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:23,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:23,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:23,943 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2022-11-25 22:40:23,944 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:23,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590727748] [2022-11-25 22:40:23,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590727748] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:23,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-11-25 22:40:23,944 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-11-25 22:40:23,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32541483] [2022-11-25 22:40:23,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:23,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-11-25 22:40:23,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:23,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-11-25 22:40:23,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:40:23,946 INFO L87 Difference]: Start difference. First operand 12372 states and 21332 transitions. Second operand has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:40:30,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:30,039 INFO L93 Difference]: Finished difference Result 28470 states and 53678 transitions. [2022-11-25 22:40:30,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2022-11-25 22:40:30,040 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) Word has length 122 [2022-11-25 22:40:30,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:30,176 INFO L225 Difference]: With dead ends: 28470 [2022-11-25 22:40:30,176 INFO L226 Difference]: Without dead ends: 16792 [2022-11-25 22:40:30,290 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 126 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=151, Invalid=605, Unknown=0, NotChecked=0, Total=756 [2022-11-25 22:40:30,290 INFO L413 NwaCegarLoop]: 430 mSDtfsCounter, 1622 mSDsluCounter, 2640 mSDsCounter, 0 mSdLazyCounter, 6344 mSolverCounterSat, 632 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 3.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1713 SdHoareTripleChecker+Valid, 3070 SdHoareTripleChecker+Invalid, 6976 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 632 IncrementalHoareTripleChecker+Valid, 6344 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.4s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:30,291 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1713 Valid, 3070 Invalid, 6976 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [632 Valid, 6344 Invalid, 0 Unknown, 0 Unchecked, 4.4s Time] [2022-11-25 22:40:30,305 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16792 states. [2022-11-25 22:40:31,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16792 to 13521. [2022-11-25 22:40:31,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13521 states, 9896 states have (on average 1.4386620856911883) internal successors, (14237), 10119 states have internal predecessors, (14237), 2512 states have call successors, (2512), 1010 states have call predecessors, (2512), 1112 states have return successors, (6541), 2508 states have call predecessors, (6541), 2454 states have call successors, (6541) [2022-11-25 22:40:32,395 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13521 states to 13521 states and 23290 transitions. [2022-11-25 22:40:32,401 INFO L78 Accepts]: Start accepts. Automaton has 13521 states and 23290 transitions. Word has length 122 [2022-11-25 22:40:32,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:32,401 INFO L495 AbstractCegarLoop]: Abstraction has 13521 states and 23290 transitions. [2022-11-25 22:40:32,402 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 7.2) internal successors, (72), 10 states have internal predecessors, (72), 7 states have call successors, (20), 4 states have call predecessors, (20), 4 states have return successors, (18), 7 states have call predecessors, (18), 7 states have call successors, (18) [2022-11-25 22:40:32,402 INFO L276 IsEmpty]: Start isEmpty. Operand 13521 states and 23290 transitions. [2022-11-25 22:40:32,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2022-11-25 22:40:32,409 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:32,409 INFO L195 NwaCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:32,409 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-11-25 22:40:32,410 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:32,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:32,410 INFO L85 PathProgramCache]: Analyzing trace with hash -363255232, now seen corresponding path program 1 times [2022-11-25 22:40:32,410 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:32,411 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [541509050] [2022-11-25 22:40:32,411 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:32,411 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:32,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:32,613 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2022-11-25 22:40:32,613 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:32,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [541509050] [2022-11-25 22:40:32,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [541509050] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:32,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1683938642] [2022-11-25 22:40:32,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:32,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:32,614 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:32,615 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:32,840 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2022-11-25 22:40:33,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:33,186 INFO L263 TraceCheckSpWp]: Trace formula consists of 1627 conjuncts, 9 conjunts are in the unsatisfiable core [2022-11-25 22:40:33,190 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:33,250 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2022-11-25 22:40:33,251 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-11-25 22:40:33,251 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1683938642] provided 1 perfect and 0 imperfect interpolant sequences [2022-11-25 22:40:33,251 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-11-25 22:40:33,251 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [5] total 10 [2022-11-25 22:40:33,251 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154204867] [2022-11-25 22:40:33,252 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-11-25 22:40:33,254 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-11-25 22:40:33,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2022-11-25 22:40:33,255 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-11-25 22:40:33,255 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-11-25 22:40:33,256 INFO L87 Difference]: Start difference. First operand 13521 states and 23290 transitions. Second operand has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:40:34,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-11-25 22:40:34,746 INFO L93 Difference]: Finished difference Result 27626 states and 49668 transitions. [2022-11-25 22:40:34,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-11-25 22:40:34,747 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) Word has length 124 [2022-11-25 22:40:34,747 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-11-25 22:40:34,871 INFO L225 Difference]: With dead ends: 27626 [2022-11-25 22:40:34,871 INFO L226 Difference]: Without dead ends: 14958 [2022-11-25 22:40:35,076 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 120 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2022-11-25 22:40:35,083 INFO L413 NwaCegarLoop]: 723 mSDtfsCounter, 119 mSDsluCounter, 3468 mSDsCounter, 0 mSdLazyCounter, 254 mSolverCounterSat, 86 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 119 SdHoareTripleChecker+Valid, 4191 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 86 IncrementalHoareTripleChecker+Valid, 254 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-11-25 22:40:35,084 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [119 Valid, 4191 Invalid, 340 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [86 Valid, 254 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-11-25 22:40:35,100 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14958 states. [2022-11-25 22:40:36,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14958 to 13674. [2022-11-25 22:40:36,243 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13674 states, 10017 states have (on average 1.433363282419886) internal successors, (14358), 10253 states have internal predecessors, (14358), 2512 states have call successors, (2512), 1010 states have call predecessors, (2512), 1144 states have return successors, (6604), 2527 states have call predecessors, (6604), 2454 states have call successors, (6604) [2022-11-25 22:40:36,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13674 states to 13674 states and 23474 transitions. [2022-11-25 22:40:36,368 INFO L78 Accepts]: Start accepts. Automaton has 13674 states and 23474 transitions. Word has length 124 [2022-11-25 22:40:36,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-11-25 22:40:36,369 INFO L495 AbstractCegarLoop]: Abstraction has 13674 states and 23474 transitions. [2022-11-25 22:40:36,369 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 10.714285714285714) internal successors, (75), 6 states have internal predecessors, (75), 2 states have call successors, (22), 2 states have call predecessors, (22), 3 states have return successors, (20), 3 states have call predecessors, (20), 2 states have call successors, (20) [2022-11-25 22:40:36,369 INFO L276 IsEmpty]: Start isEmpty. Operand 13674 states and 23474 transitions. [2022-11-25 22:40:36,375 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 123 [2022-11-25 22:40:36,375 INFO L187 NwaCegarLoop]: Found error trace [2022-11-25 22:40:36,375 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-11-25 22:40:36,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2022-11-25 22:40:36,584 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable15 [2022-11-25 22:40:36,584 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting __automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-11-25 22:40:36,585 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-11-25 22:40:36,585 INFO L85 PathProgramCache]: Analyzing trace with hash 1452408900, now seen corresponding path program 1 times [2022-11-25 22:40:36,585 INFO L118 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2022-11-25 22:40:36,585 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886527110] [2022-11-25 22:40:36,585 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:36,585 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-11-25 22:40:36,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:36,815 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2022-11-25 22:40:36,816 INFO L136 FreeRefinementEngine]: Strategy SIFA_TAIPAN found an infeasible trace [2022-11-25 22:40:36,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886527110] [2022-11-25 22:40:36,816 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886527110] provided 0 perfect and 1 imperfect interpolant sequences [2022-11-25 22:40:36,816 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459664280] [2022-11-25 22:40:36,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-11-25 22:40:36,816 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-11-25 22:40:36,817 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 [2022-11-25 22:40:36,818 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-11-25 22:40:36,823 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_9f120edb-07d7-4e32-8414-ac77c5582a67/bin/utaipan-ByfvJB40ur/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2022-11-25 22:40:37,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-11-25 22:40:37,179 INFO L263 TraceCheckSpWp]: Trace formula consists of 1612 conjuncts, 5 conjunts are in the unsatisfiable core [2022-11-25 22:40:37,182 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-11-25 22:40:37,269 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 6 proven. 2 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2022-11-25 22:40:37,270 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-11-25 22:40:37,631 INFO L134 CoverageAnalysis]: Checked inductivity of 20 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2022-11-25 22:40:37,632 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [459664280] provided 0 perfect and 2 imperfect interpolant sequences [2022-11-25 22:40:37,632 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSifa [1164392255] [2022-11-25 22:40:37,641 INFO L159 IcfgInterpreter]: Started Sifa with 103 locations of interest [2022-11-25 22:40:37,641 INFO L166 IcfgInterpreter]: Building call graph [2022-11-25 22:40:37,642 INFO L171 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2022-11-25 22:40:37,642 INFO L176 IcfgInterpreter]: Starting interpretation [2022-11-25 22:40:37,645 INFO L197 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2022-11-25 22:40:42,478 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift with input of size 582 for LOIs [2022-11-25 22:40:54,043 INFO L197 IcfgInterpreter]: Interpreting procedure timeShift__wrappee__executivefloor with input of size 578 for LOIs [2022-11-25 22:41:04,086 INFO L197 IcfgInterpreter]: Interpreting procedure stopRequestedInDirection with input of size 453 for LOIs [2022-11-25 22:41:07,111 INFO L197 IcfgInterpreter]: Interpreting procedure isExecutiveFloorCalling with input of size 509 for LOIs [2022-11-25 22:41:09,735 INFO L197 IcfgInterpreter]: Interpreting procedure isFloorCalling with input of size 511 for LOIs [2022-11-25 22:41:10,119 INFO L197 IcfgInterpreter]: Interpreting procedure __automaton_fail with input of size 49 for LOIs [2022-11-25 22:41:10,121 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentFloorID with input of size 509 for LOIs [2022-11-25 22:41:10,494 INFO L197 IcfgInterpreter]: Interpreting procedure existInLiftCallsInDirection with input of size 32 for LOIs [2022-11-25 22:41:10,786 INFO L197 IcfgInterpreter]: Interpreting procedure continueInDirection with input of size 460 for LOIs [2022-11-25 22:41:11,983 INFO L197 IcfgInterpreter]: Interpreting procedure isTopFloor with input of size 455 for LOIs [2022-11-25 22:41:12,072 INFO L197 IcfgInterpreter]: Interpreting procedure getCurrentHeading with input of size 56 for LOIs [2022-11-25 22:41:12,080 INFO L197 IcfgInterpreter]: Interpreting procedure angelinaCall with input of size 548 for LOIs [2022-11-25 22:41:15,040 INFO L197 IcfgInterpreter]: Interpreting procedure initPersonOnFloor with input of size 800 for LOIs [2022-11-25 22:41:34,141 INFO L197 IcfgInterpreter]: Interpreting procedure getOrigin with input of size 649 for LOIs [2022-11-25 22:41:34,706 INFO L180 IcfgInterpreter]: Interpretation finished [2022-11-25 22:41:51,644 WARN L233 SmtUtils]: Spent 11.71s on a formula simplification. DAG size of input: 649 DAG size of output: 518 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:03,759 WARN L233 SmtUtils]: Spent 11.84s on a formula simplification. DAG size of input: 689 DAG size of output: 532 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:29,615 WARN L233 SmtUtils]: Spent 15.70s on a formula simplification. DAG size of input: 800 DAG size of output: 591 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:42:49,060 WARN L233 SmtUtils]: Spent 18.79s on a formula simplification. DAG size of input: 864 DAG size of output: 760 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:21,282 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification. DAG size of input: 624 DAG size of output: 594 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:27,989 WARN L233 SmtUtils]: Spent 6.30s on a formula simplification. DAG size of input: 631 DAG size of output: 597 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:42,746 WARN L233 SmtUtils]: Spent 10.46s on a formula simplification. DAG size of input: 509 DAG size of output: 448 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:43:53,666 WARN L233 SmtUtils]: Spent 10.45s on a formula simplification. DAG size of input: 511 DAG size of output: 451 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:04,658 WARN L233 SmtUtils]: Spent 10.47s on a formula simplification. DAG size of input: 551 DAG size of output: 459 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:11,635 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 618 DAG size of output: 593 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:18,067 WARN L233 SmtUtils]: Spent 5.95s on a formula simplification. DAG size of input: 618 DAG size of output: 593 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2022-11-25 22:44:24,662 WARN L233 SmtUtils]: Spent 6.07s on a formula simplification. DAG size of input: 620 DAG size of output: 595 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)