./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4bf978f501147b566a0f6f3e817c934f24352e71 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c -s /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4bf978f501147b566a0f6f3e817c934f24352e71 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:30:22,774 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:30:22,775 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:30:22,813 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:30:22,814 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:30:22,815 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:30:22,816 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:30:22,819 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:30:22,821 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:30:22,822 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:30:22,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:30:22,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:30:22,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:30:22,826 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:30:22,827 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:30:22,828 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:30:22,829 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:30:22,830 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:30:22,831 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:30:22,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:30:22,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:30:22,837 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:30:22,838 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:30:22,839 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:30:22,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:30:22,842 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:30:22,842 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:30:22,843 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:30:22,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:30:22,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:30:22,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:30:22,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:30:22,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:30:22,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:30:22,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:30:22,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:30:22,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:30:22,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:30:22,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:30:22,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:30:22,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:30:22,851 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 07:30:22,872 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:30:22,872 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:30:22,873 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:30:22,873 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:30:22,873 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:30:22,873 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 07:30:22,874 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:30:22,874 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 07:30:22,875 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 07:30:22,875 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 07:30:22,875 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 07:30:22,875 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 07:30:22,876 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 07:30:22,876 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 07:30:22,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:30:22,877 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:30:22,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:30:22,877 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:30:22,877 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:30:22,877 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:30:22,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:30:22,878 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:30:22,878 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:30:22,878 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 07:30:22,878 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 07:30:22,878 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:30:22,879 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:30:22,879 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES 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-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bf978f501147b566a0f6f3e817c934f24352e71 [2020-12-09 07:30:23,066 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:30:23,082 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:30:23,084 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:30:23,085 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:30:23,085 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:30:23,086 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:23,130 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/34c0a0280/9d7fc637cab04e649ca7fc176f1d1b56/FLAGc53f9aed6 [2020-12-09 07:30:23,524 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:30:23,524 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:23,536 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/34c0a0280/9d7fc637cab04e649ca7fc176f1d1b56/FLAGc53f9aed6 [2020-12-09 07:30:23,545 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/34c0a0280/9d7fc637cab04e649ca7fc176f1d1b56 [2020-12-09 07:30:23,547 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:30:23,548 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:30:23,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:30:23,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:30:23,551 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:30:23,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,553 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3bbe5f83 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23, skipping insertion in model container [2020-12-09 07:30:23,554 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,559 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:30:23,591 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:30:23,760 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2020-12-09 07:30:23,762 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:30:23,770 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:30:23,815 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2020-12-09 07:30:23,815 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:30:23,829 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:30:23,829 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23 WrapperNode [2020-12-09 07:30:23,829 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:30:23,830 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:30:23,830 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:30:23,830 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:30:23,837 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,849 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,903 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:30:23,904 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:30:23,904 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:30:23,904 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:30:23,912 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,912 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,920 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,920 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,940 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,950 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,955 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... [2020-12-09 07:30:23,964 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:30:23,965 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:30:23,965 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:30:23,965 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:30:23,966 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:30:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:30:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-09 07:30:24,031 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:30:24,031 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:30:24,171 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,176 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,184 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,190 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,195 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,198 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,204 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,210 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,215 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,219 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,223 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,234 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:24,704 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##219: assume false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##220: assume !false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2020-12-09 07:30:24,705 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##322: assume !false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##321: assume false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2020-12-09 07:30:24,706 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##141: assume !false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##389: assume !false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##388: assume false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume !false; [2020-12-09 07:30:24,707 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##161: assume false; [2020-12-09 07:30:25,337 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:30:25,337 INFO L299 CfgBuilder]: Removed 154 assume(true) statements. [2020-12-09 07:30:25,340 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:25 BoogieIcfgContainer [2020-12-09 07:30:25,340 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:30:25,342 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:30:25,342 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:30:25,345 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:30:25,345 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:30:23" (1/3) ... [2020-12-09 07:30:25,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:30:25, skipping insertion in model container [2020-12-09 07:30:25,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:23" (2/3) ... [2020-12-09 07:30:25,346 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1abe0c4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:30:25, skipping insertion in model container [2020-12-09 07:30:25,346 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:25" (3/3) ... [2020-12-09 07:30:25,347 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:25,361 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:30:25,365 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2020-12-09 07:30:25,375 INFO L253 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2020-12-09 07:30:25,395 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:30:25,395 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 07:30:25,395 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:30:25,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:30:25,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:30:25,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:30:25,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:30:25,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:30:25,414 INFO L276 IsEmpty]: Start isEmpty. Operand 203 states. [2020-12-09 07:30:25,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-12-09 07:30:25,419 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:25,420 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-12-09 07:30:25,420 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:25,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:25,425 INFO L82 PathProgramCache]: Analyzing trace with hash 39803519, now seen corresponding path program 1 times [2020-12-09 07:30:25,434 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:25,434 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1460694527] [2020-12-09 07:30:25,435 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:25,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:25,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:25,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1460694527] [2020-12-09 07:30:25,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:25,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:30:25,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [170973693] [2020-12-09 07:30:25,561 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:25,561 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:25,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:25,571 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,572 INFO L87 Difference]: Start difference. First operand 203 states. Second operand 3 states. [2020-12-09 07:30:25,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:25,621 INFO L93 Difference]: Finished difference Result 206 states and 273 transitions. [2020-12-09 07:30:25,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:25,623 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 4 [2020-12-09 07:30:25,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:25,634 INFO L225 Difference]: With dead ends: 206 [2020-12-09 07:30:25,634 INFO L226 Difference]: Without dead ends: 204 [2020-12-09 07:30:25,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 204 states. [2020-12-09 07:30:25,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 204 to 202. [2020-12-09 07:30:25,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-12-09 07:30:25,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 270 transitions. [2020-12-09 07:30:25,672 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 270 transitions. Word has length 4 [2020-12-09 07:30:25,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:25,672 INFO L481 AbstractCegarLoop]: Abstraction has 202 states and 270 transitions. [2020-12-09 07:30:25,673 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:25,673 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 270 transitions. [2020-12-09 07:30:25,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:30:25,673 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:25,673 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:25,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-09 07:30:25,674 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:25,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:25,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1154217683, now seen corresponding path program 1 times [2020-12-09 07:30:25,674 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:25,674 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [490870007] [2020-12-09 07:30:25,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:25,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:25,720 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:25,720 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [490870007] [2020-12-09 07:30:25,720 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:25,720 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:25,720 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217862351] [2020-12-09 07:30:25,721 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:25,721 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:25,722 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:25,722 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,722 INFO L87 Difference]: Start difference. First operand 202 states and 270 transitions. Second operand 3 states. [2020-12-09 07:30:25,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:25,823 INFO L93 Difference]: Finished difference Result 190 states and 257 transitions. [2020-12-09 07:30:25,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:25,824 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 07:30:25,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:25,825 INFO L225 Difference]: With dead ends: 190 [2020-12-09 07:30:25,825 INFO L226 Difference]: Without dead ends: 190 [2020-12-09 07:30:25,826 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-09 07:30:25,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 187. [2020-12-09 07:30:25,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-09 07:30:25,836 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 255 transitions. [2020-12-09 07:30:25,836 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 255 transitions. Word has length 9 [2020-12-09 07:30:25,836 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:25,836 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 255 transitions. [2020-12-09 07:30:25,836 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:25,836 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 255 transitions. [2020-12-09 07:30:25,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 07:30:25,836 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:25,836 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:25,837 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-09 07:30:25,837 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:25,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:25,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1152942318, now seen corresponding path program 1 times [2020-12-09 07:30:25,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:25,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [922717150] [2020-12-09 07:30:25,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:25,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:25,871 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:25,871 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [922717150] [2020-12-09 07:30:25,871 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:25,871 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2020-12-09 07:30:25,871 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755617241] [2020-12-09 07:30:25,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:25,872 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:25,872 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:25,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,872 INFO L87 Difference]: Start difference. First operand 187 states and 255 transitions. Second operand 3 states. [2020-12-09 07:30:25,875 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:25,875 INFO L93 Difference]: Finished difference Result 186 states and 254 transitions. [2020-12-09 07:30:25,875 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:25,876 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2020-12-09 07:30:25,876 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:25,877 INFO L225 Difference]: With dead ends: 186 [2020-12-09 07:30:25,877 INFO L226 Difference]: Without dead ends: 184 [2020-12-09 07:30:25,877 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,877 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 184 states. [2020-12-09 07:30:25,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 184 to 184. [2020-12-09 07:30:25,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 184 states. [2020-12-09 07:30:25,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 184 states to 184 states and 244 transitions. [2020-12-09 07:30:25,885 INFO L78 Accepts]: Start accepts. Automaton has 184 states and 244 transitions. Word has length 9 [2020-12-09 07:30:25,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:25,885 INFO L481 AbstractCegarLoop]: Abstraction has 184 states and 244 transitions. [2020-12-09 07:30:25,885 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:25,885 INFO L276 IsEmpty]: Start isEmpty. Operand 184 states and 244 transitions. [2020-12-09 07:30:25,886 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 07:30:25,886 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:25,886 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:25,886 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-09 07:30:25,886 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:25,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:25,887 INFO L82 PathProgramCache]: Analyzing trace with hash -1723421193, now seen corresponding path program 1 times [2020-12-09 07:30:25,887 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:25,887 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [210696917] [2020-12-09 07:30:25,887 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:25,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:25,921 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:25,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [210696917] [2020-12-09 07:30:25,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:25,921 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:25,921 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [197043980] [2020-12-09 07:30:25,922 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:25,922 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:25,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:25,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,923 INFO L87 Difference]: Start difference. First operand 184 states and 244 transitions. Second operand 3 states. [2020-12-09 07:30:25,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:25,953 INFO L93 Difference]: Finished difference Result 190 states and 243 transitions. [2020-12-09 07:30:25,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:25,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-12-09 07:30:25,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:25,955 INFO L225 Difference]: With dead ends: 190 [2020-12-09 07:30:25,955 INFO L226 Difference]: Without dead ends: 190 [2020-12-09 07:30:25,956 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:25,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 190 states. [2020-12-09 07:30:25,962 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 190 to 154. [2020-12-09 07:30:25,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 154 states. [2020-12-09 07:30:25,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 200 transitions. [2020-12-09 07:30:25,964 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 200 transitions. Word has length 10 [2020-12-09 07:30:25,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:25,964 INFO L481 AbstractCegarLoop]: Abstraction has 154 states and 200 transitions. [2020-12-09 07:30:25,964 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:25,964 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 200 transitions. [2020-12-09 07:30:25,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 07:30:25,965 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:25,965 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:25,966 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-09 07:30:25,966 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:25,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:25,966 INFO L82 PathProgramCache]: Analyzing trace with hash 1972881779, now seen corresponding path program 1 times [2020-12-09 07:30:25,967 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:25,967 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1245081268] [2020-12-09 07:30:25,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:25,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,008 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1245081268] [2020-12-09 07:30:26,008 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,008 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,008 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989761308] [2020-12-09 07:30:26,008 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,008 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,009 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,009 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,009 INFO L87 Difference]: Start difference. First operand 154 states and 200 transitions. Second operand 3 states. [2020-12-09 07:30:26,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,076 INFO L93 Difference]: Finished difference Result 140 states and 186 transitions. [2020-12-09 07:30:26,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,076 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-09 07:30:26,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,077 INFO L225 Difference]: With dead ends: 140 [2020-12-09 07:30:26,077 INFO L226 Difference]: Without dead ends: 140 [2020-12-09 07:30:26,078 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2020-12-09 07:30:26,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2020-12-09 07:30:26,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 07:30:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 186 transitions. [2020-12-09 07:30:26,084 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 186 transitions. Word has length 15 [2020-12-09 07:30:26,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,084 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 186 transitions. [2020-12-09 07:30:26,084 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,084 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 186 transitions. [2020-12-09 07:30:26,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:30:26,086 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,086 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-09 07:30:26,086 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,087 INFO L82 PathProgramCache]: Analyzing trace with hash 388452936, now seen corresponding path program 1 times [2020-12-09 07:30:26,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855784230] [2020-12-09 07:30:26,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,135 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855784230] [2020-12-09 07:30:26,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2116220704] [2020-12-09 07:30:26,136 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,136 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,136 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,137 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,137 INFO L87 Difference]: Start difference. First operand 140 states and 186 transitions. Second operand 3 states. [2020-12-09 07:30:26,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,153 INFO L93 Difference]: Finished difference Result 158 states and 206 transitions. [2020-12-09 07:30:26,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,153 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 07:30:26,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,154 INFO L225 Difference]: With dead ends: 158 [2020-12-09 07:30:26,154 INFO L226 Difference]: Without dead ends: 158 [2020-12-09 07:30:26,155 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-12-09 07:30:26,158 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 140. [2020-12-09 07:30:26,158 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-12-09 07:30:26,159 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 185 transitions. [2020-12-09 07:30:26,159 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 185 transitions. Word has length 18 [2020-12-09 07:30:26,159 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,160 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 185 transitions. [2020-12-09 07:30:26,160 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,160 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 185 transitions. [2020-12-09 07:30:26,161 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-12-09 07:30:26,161 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,162 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-09 07:30:26,162 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,162 INFO L82 PathProgramCache]: Analyzing trace with hash -640203662, now seen corresponding path program 1 times [2020-12-09 07:30:26,162 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,163 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [930298710] [2020-12-09 07:30:26,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,202 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [930298710] [2020-12-09 07:30:26,202 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,202 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,202 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [549962615] [2020-12-09 07:30:26,203 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,203 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,203 INFO L87 Difference]: Start difference. First operand 140 states and 185 transitions. Second operand 3 states. [2020-12-09 07:30:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,262 INFO L93 Difference]: Finished difference Result 137 states and 181 transitions. [2020-12-09 07:30:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,263 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 18 [2020-12-09 07:30:26,263 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,264 INFO L225 Difference]: With dead ends: 137 [2020-12-09 07:30:26,264 INFO L226 Difference]: Without dead ends: 137 [2020-12-09 07:30:26,264 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,264 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-12-09 07:30:26,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 137. [2020-12-09 07:30:26,266 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-09 07:30:26,266 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 181 transitions. [2020-12-09 07:30:26,267 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 181 transitions. Word has length 18 [2020-12-09 07:30:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,267 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 181 transitions. [2020-12-09 07:30:26,267 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 181 transitions. [2020-12-09 07:30:26,268 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-12-09 07:30:26,268 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,268 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,268 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-09 07:30:26,268 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,268 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,268 INFO L82 PathProgramCache]: Analyzing trace with hash -1436132024, now seen corresponding path program 1 times [2020-12-09 07:30:26,269 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,269 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [92529094] [2020-12-09 07:30:26,269 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,306 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [92529094] [2020-12-09 07:30:26,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1605503364] [2020-12-09 07:30:26,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,308 INFO L87 Difference]: Start difference. First operand 137 states and 181 transitions. Second operand 3 states. [2020-12-09 07:30:26,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,320 INFO L93 Difference]: Finished difference Result 153 states and 199 transitions. [2020-12-09 07:30:26,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,321 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 19 [2020-12-09 07:30:26,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,322 INFO L225 Difference]: With dead ends: 153 [2020-12-09 07:30:26,322 INFO L226 Difference]: Without dead ends: 153 [2020-12-09 07:30:26,322 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-09 07:30:26,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 135. [2020-12-09 07:30:26,325 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 07:30:26,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 178 transitions. [2020-12-09 07:30:26,326 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 178 transitions. Word has length 19 [2020-12-09 07:30:26,326 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,326 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 178 transitions. [2020-12-09 07:30:26,326 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,327 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 178 transitions. [2020-12-09 07:30:26,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-12-09 07:30:26,327 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,327 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,328 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-09 07:30:26,328 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,328 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,328 INFO L82 PathProgramCache]: Analyzing trace with hash -327942383, now seen corresponding path program 1 times [2020-12-09 07:30:26,329 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,329 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1962927105] [2020-12-09 07:30:26,329 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,377 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,377 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1962927105] [2020-12-09 07:30:26,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1811087847] [2020-12-09 07:30:26,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:26,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:26,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:26,378 INFO L87 Difference]: Start difference. First operand 135 states and 178 transitions. Second operand 4 states. [2020-12-09 07:30:26,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,461 INFO L93 Difference]: Finished difference Result 135 states and 177 transitions. [2020-12-09 07:30:26,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:26,461 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2020-12-09 07:30:26,461 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,462 INFO L225 Difference]: With dead ends: 135 [2020-12-09 07:30:26,462 INFO L226 Difference]: Without dead ends: 135 [2020-12-09 07:30:26,462 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:26,462 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2020-12-09 07:30:26,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 135. [2020-12-09 07:30:26,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-12-09 07:30:26,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 177 transitions. [2020-12-09 07:30:26,465 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 177 transitions. Word has length 20 [2020-12-09 07:30:26,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,465 INFO L481 AbstractCegarLoop]: Abstraction has 135 states and 177 transitions. [2020-12-09 07:30:26,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:26,465 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 177 transitions. [2020-12-09 07:30:26,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 07:30:26,465 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,465 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,465 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-12-09 07:30:26,466 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,466 INFO L82 PathProgramCache]: Analyzing trace with hash 936264234, now seen corresponding path program 1 times [2020-12-09 07:30:26,466 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [135521687] [2020-12-09 07:30:26,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,486 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,486 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [135521687] [2020-12-09 07:30:26,486 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,486 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,486 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1684919817] [2020-12-09 07:30:26,486 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,487 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,487 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,487 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,487 INFO L87 Difference]: Start difference. First operand 135 states and 177 transitions. Second operand 3 states. [2020-12-09 07:30:26,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,495 INFO L93 Difference]: Finished difference Result 130 states and 170 transitions. [2020-12-09 07:30:26,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,495 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 07:30:26,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,496 INFO L225 Difference]: With dead ends: 130 [2020-12-09 07:30:26,496 INFO L226 Difference]: Without dead ends: 130 [2020-12-09 07:30:26,496 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2020-12-09 07:30:26,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 130. [2020-12-09 07:30:26,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 07:30:26,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-12-09 07:30:26,499 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 21 [2020-12-09 07:30:26,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,499 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-12-09 07:30:26,499 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,499 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-12-09 07:30:26,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 07:30:26,499 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,499 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,499 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-12-09 07:30:26,500 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,500 INFO L82 PathProgramCache]: Analyzing trace with hash 42584549, now seen corresponding path program 1 times [2020-12-09 07:30:26,500 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,500 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [551081831] [2020-12-09 07:30:26,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,566 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [551081831] [2020-12-09 07:30:26,567 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,567 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 07:30:26,567 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [667728535] [2020-12-09 07:30:26,567 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-09 07:30:26,567 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-09 07:30:26,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-12-09 07:30:26,568 INFO L87 Difference]: Start difference. First operand 130 states and 170 transitions. Second operand 6 states. [2020-12-09 07:30:26,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,762 INFO L93 Difference]: Finished difference Result 152 states and 193 transitions. [2020-12-09 07:30:26,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:30:26,763 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2020-12-09 07:30:26,763 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,764 INFO L225 Difference]: With dead ends: 152 [2020-12-09 07:30:26,764 INFO L226 Difference]: Without dead ends: 152 [2020-12-09 07:30:26,764 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:26,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-12-09 07:30:26,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 130. [2020-12-09 07:30:26,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 130 states. [2020-12-09 07:30:26,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 130 states to 130 states and 170 transitions. [2020-12-09 07:30:26,766 INFO L78 Accepts]: Start accepts. Automaton has 130 states and 170 transitions. Word has length 21 [2020-12-09 07:30:26,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,766 INFO L481 AbstractCegarLoop]: Abstraction has 130 states and 170 transitions. [2020-12-09 07:30:26,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-12-09 07:30:26,767 INFO L276 IsEmpty]: Start isEmpty. Operand 130 states and 170 transitions. [2020-12-09 07:30:26,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 07:30:26,767 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,767 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,767 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-12-09 07:30:26,767 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,768 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,768 INFO L82 PathProgramCache]: Analyzing trace with hash -1040201214, now seen corresponding path program 1 times [2020-12-09 07:30:26,768 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,768 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [416359367] [2020-12-09 07:30:26,768 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,791 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,791 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [416359367] [2020-12-09 07:30:26,791 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,791 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:26,791 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008590687] [2020-12-09 07:30:26,792 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:26,792 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,792 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:26,792 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:26,793 INFO L87 Difference]: Start difference. First operand 130 states and 170 transitions. Second operand 4 states. [2020-12-09 07:30:26,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,838 INFO L93 Difference]: Finished difference Result 140 states and 181 transitions. [2020-12-09 07:30:26,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:30:26,839 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-09 07:30:26,839 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,839 INFO L225 Difference]: With dead ends: 140 [2020-12-09 07:30:26,839 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 07:30:26,840 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:26,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 07:30:26,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-12-09 07:30:26,842 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-09 07:30:26,842 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 159 transitions. [2020-12-09 07:30:26,842 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 159 transitions. Word has length 22 [2020-12-09 07:30:26,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,842 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 159 transitions. [2020-12-09 07:30:26,842 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:26,842 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 159 transitions. [2020-12-09 07:30:26,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 07:30:26,843 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,843 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,843 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-12-09 07:30:26,843 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1254208032, now seen corresponding path program 1 times [2020-12-09 07:30:26,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,844 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1150699109] [2020-12-09 07:30:26,844 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,863 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,863 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1150699109] [2020-12-09 07:30:26,863 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,863 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,863 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [669642813] [2020-12-09 07:30:26,864 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:26,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:26,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,864 INFO L87 Difference]: Start difference. First operand 122 states and 159 transitions. Second operand 3 states. [2020-12-09 07:30:26,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:26,911 INFO L93 Difference]: Finished difference Result 124 states and 162 transitions. [2020-12-09 07:30:26,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:26,912 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-12-09 07:30:26,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:26,912 INFO L225 Difference]: With dead ends: 124 [2020-12-09 07:30:26,912 INFO L226 Difference]: Without dead ends: 124 [2020-12-09 07:30:26,913 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:26,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2020-12-09 07:30:26,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2020-12-09 07:30:26,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 124 states. [2020-12-09 07:30:26,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 162 transitions. [2020-12-09 07:30:26,915 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 162 transitions. Word has length 22 [2020-12-09 07:30:26,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:26,915 INFO L481 AbstractCegarLoop]: Abstraction has 124 states and 162 transitions. [2020-12-09 07:30:26,915 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:26,915 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 162 transitions. [2020-12-09 07:30:26,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-12-09 07:30:26,916 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:26,916 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:26,916 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-12-09 07:30:26,916 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:26,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:26,916 INFO L82 PathProgramCache]: Analyzing trace with hash -1365167297, now seen corresponding path program 1 times [2020-12-09 07:30:26,917 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:26,917 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1142476543] [2020-12-09 07:30:26,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:26,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:26,939 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:26,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1142476543] [2020-12-09 07:30:26,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:26,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:26,939 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1492958044] [2020-12-09 07:30:26,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:26,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:26,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:26,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:26,940 INFO L87 Difference]: Start difference. First operand 124 states and 162 transitions. Second operand 4 states. [2020-12-09 07:30:27,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,011 INFO L93 Difference]: Finished difference Result 144 states and 182 transitions. [2020-12-09 07:30:27,011 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:27,012 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-12-09 07:30:27,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,013 INFO L225 Difference]: With dead ends: 144 [2020-12-09 07:30:27,013 INFO L226 Difference]: Without dead ends: 144 [2020-12-09 07:30:27,013 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:27,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-12-09 07:30:27,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 137. [2020-12-09 07:30:27,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-12-09 07:30:27,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 175 transitions. [2020-12-09 07:30:27,017 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 175 transitions. Word has length 22 [2020-12-09 07:30:27,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,017 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 175 transitions. [2020-12-09 07:30:27,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:27,017 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 175 transitions. [2020-12-09 07:30:27,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 07:30:27,018 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,018 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,018 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-12-09 07:30:27,018 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,018 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,019 INFO L82 PathProgramCache]: Analyzing trace with hash 1638707614, now seen corresponding path program 1 times [2020-12-09 07:30:27,019 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,019 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [396556707] [2020-12-09 07:30:27,019 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,048 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,048 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [396556707] [2020-12-09 07:30:27,048 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,048 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:27,048 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [656793131] [2020-12-09 07:30:27,049 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:27,049 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,049 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:27,049 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:27,049 INFO L87 Difference]: Start difference. First operand 137 states and 175 transitions. Second operand 3 states. [2020-12-09 07:30:27,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,106 INFO L93 Difference]: Finished difference Result 148 states and 187 transitions. [2020-12-09 07:30:27,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:27,106 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-09 07:30:27,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,107 INFO L225 Difference]: With dead ends: 148 [2020-12-09 07:30:27,107 INFO L226 Difference]: Without dead ends: 131 [2020-12-09 07:30:27,107 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:27,108 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2020-12-09 07:30:27,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 131. [2020-12-09 07:30:27,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-12-09 07:30:27,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 162 transitions. [2020-12-09 07:30:27,111 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 162 transitions. Word has length 23 [2020-12-09 07:30:27,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,111 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 162 transitions. [2020-12-09 07:30:27,111 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:27,111 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 162 transitions. [2020-12-09 07:30:27,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 07:30:27,112 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,112 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-12-09 07:30:27,112 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,113 INFO L82 PathProgramCache]: Analyzing trace with hash 218084611, now seen corresponding path program 1 times [2020-12-09 07:30:27,113 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,113 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1079926762] [2020-12-09 07:30:27,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,139 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,139 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1079926762] [2020-12-09 07:30:27,139 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,139 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:27,139 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1470004393] [2020-12-09 07:30:27,140 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:27,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,140 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:27,140 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:27,140 INFO L87 Difference]: Start difference. First operand 131 states and 162 transitions. Second operand 3 states. [2020-12-09 07:30:27,146 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,147 INFO L93 Difference]: Finished difference Result 127 states and 157 transitions. [2020-12-09 07:30:27,147 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:27,147 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 23 [2020-12-09 07:30:27,147 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,148 INFO L225 Difference]: With dead ends: 127 [2020-12-09 07:30:27,148 INFO L226 Difference]: Without dead ends: 126 [2020-12-09 07:30:27,149 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:27,149 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2020-12-09 07:30:27,151 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 126. [2020-12-09 07:30:27,151 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 126 states. [2020-12-09 07:30:27,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 156 transitions. [2020-12-09 07:30:27,152 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 156 transitions. Word has length 23 [2020-12-09 07:30:27,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,152 INFO L481 AbstractCegarLoop]: Abstraction has 126 states and 156 transitions. [2020-12-09 07:30:27,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:27,152 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 156 transitions. [2020-12-09 07:30:27,153 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 07:30:27,153 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,153 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,153 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-12-09 07:30:27,153 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,154 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,154 INFO L82 PathProgramCache]: Analyzing trace with hash 239431486, now seen corresponding path program 1 times [2020-12-09 07:30:27,154 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,154 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1825400251] [2020-12-09 07:30:27,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,176 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1825400251] [2020-12-09 07:30:27,176 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,176 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:27,176 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288951342] [2020-12-09 07:30:27,176 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:27,176 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,177 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:27,177 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:27,177 INFO L87 Difference]: Start difference. First operand 126 states and 156 transitions. Second operand 4 states. [2020-12-09 07:30:27,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,235 INFO L93 Difference]: Finished difference Result 113 states and 137 transitions. [2020-12-09 07:30:27,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:27,235 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-09 07:30:27,235 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,236 INFO L225 Difference]: With dead ends: 113 [2020-12-09 07:30:27,236 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 07:30:27,236 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:27,236 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 07:30:27,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-12-09 07:30:27,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 07:30:27,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 137 transitions. [2020-12-09 07:30:27,238 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 137 transitions. Word has length 23 [2020-12-09 07:30:27,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,238 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 137 transitions. [2020-12-09 07:30:27,238 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:27,238 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 137 transitions. [2020-12-09 07:30:27,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-12-09 07:30:27,239 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,239 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-12-09 07:30:27,239 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,239 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,239 INFO L82 PathProgramCache]: Analyzing trace with hash -225387948, now seen corresponding path program 1 times [2020-12-09 07:30:27,239 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,240 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1620924472] [2020-12-09 07:30:27,240 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,260 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1620924472] [2020-12-09 07:30:27,261 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,261 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:27,261 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1140403974] [2020-12-09 07:30:27,261 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:27,261 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,262 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:27,262 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:27,262 INFO L87 Difference]: Start difference. First operand 113 states and 137 transitions. Second operand 4 states. [2020-12-09 07:30:27,305 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,305 INFO L93 Difference]: Finished difference Result 113 states and 131 transitions. [2020-12-09 07:30:27,305 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:27,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 23 [2020-12-09 07:30:27,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,306 INFO L225 Difference]: With dead ends: 113 [2020-12-09 07:30:27,306 INFO L226 Difference]: Without dead ends: 113 [2020-12-09 07:30:27,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:27,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2020-12-09 07:30:27,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2020-12-09 07:30:27,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 113 states. [2020-12-09 07:30:27,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 131 transitions. [2020-12-09 07:30:27,310 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 131 transitions. Word has length 23 [2020-12-09 07:30:27,310 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,310 INFO L481 AbstractCegarLoop]: Abstraction has 113 states and 131 transitions. [2020-12-09 07:30:27,310 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:27,310 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 131 transitions. [2020-12-09 07:30:27,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-12-09 07:30:27,310 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,311 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-12-09 07:30:27,311 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,311 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,311 INFO L82 PathProgramCache]: Analyzing trace with hash 842002148, now seen corresponding path program 1 times [2020-12-09 07:30:27,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,312 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [719302287] [2020-12-09 07:30:27,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,354 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [719302287] [2020-12-09 07:30:27,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,355 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:27,355 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577220166] [2020-12-09 07:30:27,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:27,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:27,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:27,356 INFO L87 Difference]: Start difference. First operand 113 states and 131 transitions. Second operand 4 states. [2020-12-09 07:30:27,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,424 INFO L93 Difference]: Finished difference Result 122 states and 140 transitions. [2020-12-09 07:30:27,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:30:27,425 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-12-09 07:30:27,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,426 INFO L225 Difference]: With dead ends: 122 [2020-12-09 07:30:27,426 INFO L226 Difference]: Without dead ends: 87 [2020-12-09 07:30:27,426 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:27,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-12-09 07:30:27,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2020-12-09 07:30:27,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-12-09 07:30:27,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 99 transitions. [2020-12-09 07:30:27,429 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 99 transitions. Word has length 24 [2020-12-09 07:30:27,429 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,429 INFO L481 AbstractCegarLoop]: Abstraction has 87 states and 99 transitions. [2020-12-09 07:30:27,429 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:27,429 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 99 transitions. [2020-12-09 07:30:27,429 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-12-09 07:30:27,430 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,430 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-12-09 07:30:27,430 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,430 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,431 INFO L82 PathProgramCache]: Analyzing trace with hash -2072439918, now seen corresponding path program 1 times [2020-12-09 07:30:27,431 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,431 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [885147280] [2020-12-09 07:30:27,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,467 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,467 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [885147280] [2020-12-09 07:30:27,467 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,467 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:27,467 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [645089747] [2020-12-09 07:30:27,468 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:27,468 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:27,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:27,468 INFO L87 Difference]: Start difference. First operand 87 states and 99 transitions. Second operand 4 states. [2020-12-09 07:30:27,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,500 INFO L93 Difference]: Finished difference Result 85 states and 97 transitions. [2020-12-09 07:30:27,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:27,500 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-12-09 07:30:27,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,501 INFO L225 Difference]: With dead ends: 85 [2020-12-09 07:30:27,501 INFO L226 Difference]: Without dead ends: 68 [2020-12-09 07:30:27,501 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:27,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-12-09 07:30:27,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-12-09 07:30:27,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-12-09 07:30:27,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 80 transitions. [2020-12-09 07:30:27,504 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 80 transitions. Word has length 25 [2020-12-09 07:30:27,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,504 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 80 transitions. [2020-12-09 07:30:27,504 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:27,504 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 80 transitions. [2020-12-09 07:30:27,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 07:30:27,504 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,505 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-12-09 07:30:27,505 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,505 INFO L82 PathProgramCache]: Analyzing trace with hash 1246165642, now seen corresponding path program 1 times [2020-12-09 07:30:27,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869302026] [2020-12-09 07:30:27,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:27,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:27,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869302026] [2020-12-09 07:30:27,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:27,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:30:27,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1767658638] [2020-12-09 07:30:27,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:30:27,538 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy SIFA_TAIPAN [2020-12-09 07:30:27,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:30:27,538 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:27,538 INFO L87 Difference]: Start difference. First operand 68 states and 80 transitions. Second operand 5 states. [2020-12-09 07:30:27,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:27,583 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-12-09 07:30:27,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:30:27,583 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-12-09 07:30:27,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:27,583 INFO L225 Difference]: With dead ends: 78 [2020-12-09 07:30:27,583 INFO L226 Difference]: Without dead ends: 52 [2020-12-09 07:30:27,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:27,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-12-09 07:30:27,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2020-12-09 07:30:27,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-12-09 07:30:27,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-12-09 07:30:27,585 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 26 [2020-12-09 07:30:27,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:27,585 INFO L481 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-12-09 07:30:27,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:30:27,585 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-12-09 07:30:27,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 07:30:27,585 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:27,585 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:27,586 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-12-09 07:30:27,586 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:27,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:27,586 INFO L82 PathProgramCache]: Analyzing trace with hash -637299823, now seen corresponding path program 1 times [2020-12-09 07:30:27,586 INFO L162 FreeRefinementEngine]: Executing refinement strategy SIFA_TAIPAN [2020-12-09 07:30:27,586 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1652893901] [2020-12-09 07:30:27,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-09 07:30:27,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:30:27,597 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:30:27,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:30:27,608 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:30:27,630 INFO L173 FreeRefinementEngine]: Strategy SIFA_TAIPAN found a feasible trace [2020-12-09 07:30:27,630 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:30:27,630 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-12-09 07:30:27,680 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:30:27 BoogieIcfgContainer [2020-12-09 07:30:27,681 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:30:27,681 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:30:27,681 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:30:27,681 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:30:27,682 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:25" (3/4) ... [2020-12-09 07:30:27,684 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 07:30:27,684 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:30:27,685 INFO L168 Benchmark]: Toolchain (without parser) took 4136.37 ms. Allocated memory was 94.4 MB in the beginning and 172.0 MB in the end (delta: 77.6 MB). Free memory was 53.5 MB in the beginning and 85.6 MB in the end (delta: -32.1 MB). Peak memory consumption was 47.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,685 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:30:27,685 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.60 ms. Allocated memory is still 94.4 MB. Free memory was 53.3 MB in the beginning and 58.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,686 INFO L168 Benchmark]: Boogie Procedure Inliner took 72.99 ms. Allocated memory is still 94.4 MB. Free memory was 58.8 MB in the beginning and 52.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,686 INFO L168 Benchmark]: Boogie Preprocessor took 60.34 ms. Allocated memory is still 94.4 MB. Free memory was 52.6 MB in the beginning and 48.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,686 INFO L168 Benchmark]: RCFGBuilder took 1375.46 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 48.4 MB in the beginning and 52.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,687 INFO L168 Benchmark]: TraceAbstraction took 2338.88 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 51.2 MB in the beginning and 85.6 MB in the end (delta: -34.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:27,687 INFO L168 Benchmark]: Witness Printer took 2.82 ms. Allocated memory is still 172.0 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:30:27,689 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 94.4 MB. Free memory is still 70.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 280.60 ms. Allocated memory is still 94.4 MB. Free memory was 53.3 MB in the beginning and 58.8 MB in the end (delta: -5.4 MB). Peak memory consumption was 7.2 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 72.99 ms. Allocated memory is still 94.4 MB. Free memory was 58.8 MB in the beginning and 52.6 MB in the end (delta: 6.2 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 60.34 ms. Allocated memory is still 94.4 MB. Free memory was 52.6 MB in the beginning and 48.4 MB in the end (delta: 4.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1375.46 ms. Allocated memory was 94.4 MB in the beginning and 117.4 MB in the end (delta: 23.1 MB). Free memory was 48.4 MB in the beginning and 52.2 MB in the end (delta: -3.9 MB). Peak memory consumption was 40.8 MB. Max. memory is 16.1 GB. * TraceAbstraction took 2338.88 ms. Allocated memory was 117.4 MB in the beginning and 172.0 MB in the end (delta: 54.5 MB). Free memory was 51.2 MB in the beginning and 85.6 MB in the end (delta: -34.4 MB). Peak memory consumption was 21.2 MB. Max. memory is 16.1 GB. * Witness Printer took 2.82 ms. Allocated memory is still 172.0 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1013]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1013. Possible FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 [L337] COND TRUE irp_choice == 0 [L338] pirp__IoStatus__Status = -1073741637 [L339] myStatus = -1073741637 [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L106] COND FALSE !(irpStack__MinorFunction == 0) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L109] COND FALSE !(irpStack__MinorFunction == 23) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L112] COND TRUE irpStack__MinorFunction == 2 [L236] devExt__Removed = 1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L237] COND TRUE s == NP [L238] s = SKIP1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L489] COND FALSE !(\read(compRegistered)) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 [L518] returnVal2 = -1073741823 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L528] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L532] COND FALSE !(s == MPR1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L551] return (returnVal2); [L248] status = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L290] return (status); [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L420] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L428] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L429] COND TRUE status != -1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L430] COND FALSE !(s != SKIP2) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L440] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L447] COND FALSE !(s == DC) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L452] COND TRUE status != lowerDriverReturn VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1013] reach_error() VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=-1073741823, MPR1=5, MPR3=6, myStatus=-1073741637, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 203 locations, 31 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.2s, OverallIterations: 22, TraceHistogramMax: 1, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3359 SDtfs, 1996 SDslu, 2120 SDs, 0 SdLazy, 1101 SolverSat, 125 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.7s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 78 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=203occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 21 MinimizatonAttempts, 106 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 424 NumberOfCodeBlocks, 424 NumberOfCodeBlocksAsserted, 22 NumberOfCheckSat, 376 ConstructedInterpolants, 0 QuantifiedInterpolants, 16816 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.0-7b2dab5 [2020-12-09 07:30:29,226 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 07:30:29,228 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 07:30:29,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 07:30:29,259 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 07:30:29,260 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 07:30:29,261 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 07:30:29,263 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 07:30:29,264 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 07:30:29,265 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 07:30:29,266 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 07:30:29,267 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 07:30:29,268 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 07:30:29,268 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 07:30:29,269 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 07:30:29,270 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 07:30:29,271 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 07:30:29,272 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 07:30:29,273 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 07:30:29,275 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 07:30:29,276 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 07:30:29,277 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 07:30:29,278 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 07:30:29,279 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 07:30:29,281 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 07:30:29,282 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 07:30:29,282 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 07:30:29,283 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 07:30:29,283 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 07:30:29,284 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 07:30:29,285 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 07:30:29,285 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 07:30:29,286 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 07:30:29,287 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 07:30:29,287 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 07:30:29,288 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 07:30:29,288 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 07:30:29,288 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 07:30:29,288 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 07:30:29,289 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 07:30:29,289 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 07:30:29,290 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 07:30:29,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 07:30:29,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 07:30:29,308 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 07:30:29,308 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 07:30:29,308 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 07:30:29,308 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 07:30:29,308 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 07:30:29,308 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 07:30:29,308 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 07:30:29,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 07:30:29,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 07:30:29,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 07:30:29,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 07:30:29,309 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 07:30:29,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 07:30:29,309 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 07:30:29,310 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 07:30:29,311 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:30:29,311 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 07:30:29,311 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 07:30:29,312 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 07:30:29,312 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 07:30:29,312 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bf978f501147b566a0f6f3e817c934f24352e71 [2020-12-09 07:30:29,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 07:30:29,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 07:30:29,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 07:30:29,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 07:30:29,601 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 07:30:29,601 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/../../sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:29,647 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/908845242/8e7072ea75264af9999e8f550d650cc1/FLAGaa66210f3 [2020-12-09 07:30:30,094 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 07:30:30,094 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:30,104 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/908845242/8e7072ea75264af9999e8f550d650cc1/FLAGaa66210f3 [2020-12-09 07:30:30,114 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/data/908845242/8e7072ea75264af9999e8f550d650cc1 [2020-12-09 07:30:30,116 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 07:30:30,117 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 07:30:30,118 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 07:30:30,118 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 07:30:30,121 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 07:30:30,121 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,123 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21b48268 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30, skipping insertion in model container [2020-12-09 07:30:30,123 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,128 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 07:30:30,157 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 07:30:30,311 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2020-12-09 07:30:30,313 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:30:30,322 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 07:30:30,396 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/sv-benchmarks/c/ntdrivers-simplified/kbfiltr_simpl2.cil-2.c[29656,29669] [2020-12-09 07:30:30,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 07:30:30,419 INFO L208 MainTranslator]: Completed translation [2020-12-09 07:30:30,419 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30 WrapperNode [2020-12-09 07:30:30,419 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 07:30:30,421 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 07:30:30,421 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 07:30:30,421 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 07:30:30,429 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,447 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,500 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 07:30:30,501 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 07:30:30,501 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 07:30:30,501 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 07:30:30,509 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,509 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,519 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,519 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,540 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,553 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,558 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... [2020-12-09 07:30:30,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 07:30:30,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 07:30:30,567 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 07:30:30,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 07:30:30,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 07:30:30,632 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2020-12-09 07:30:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 07:30:30,633 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 07:30:30,633 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 07:30:30,776 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,784 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,794 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,804 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,811 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,816 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,824 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,832 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,840 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,846 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,851 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:30,862 WARN L800 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2020-12-09 07:30:31,479 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##249: assume false; [2020-12-09 07:30:31,479 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##250: assume !false; [2020-12-09 07:30:31,479 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##279: assume false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##280: assume !false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##219: assume false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##220: assume !false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##302: assume !false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##301: assume false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##322: assume !false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##321: assume false; [2020-12-09 07:30:31,480 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##85: assume !false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##84: assume false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##191: assume false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##192: assume !false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##46: assume !false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##45: assume false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##140: assume false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##141: assume !false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##389: assume !false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##388: assume false; [2020-12-09 07:30:31,481 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##18: assume false; [2020-12-09 07:30:31,482 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##19: assume !false; [2020-12-09 07:30:31,482 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##162: assume !false; [2020-12-09 07:30:31,482 INFO L752 $ProcedureCfgBuilder]: dead code at ProgramPoint $Ultimate##161: assume false; [2020-12-09 07:30:31,494 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 07:30:31,494 INFO L299 CfgBuilder]: Removed 154 assume(true) statements. [2020-12-09 07:30:31,496 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:31 BoogieIcfgContainer [2020-12-09 07:30:31,497 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 07:30:31,502 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 07:30:31,502 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 07:30:31,504 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 07:30:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 07:30:30" (1/3) ... [2020-12-09 07:30:31,504 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3171a23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:30:31, skipping insertion in model container [2020-12-09 07:30:31,504 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 07:30:30" (2/3) ... [2020-12-09 07:30:31,505 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3171a23c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 07:30:31, skipping insertion in model container [2020-12-09 07:30:31,505 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:31" (3/3) ... [2020-12-09 07:30:31,506 INFO L111 eAbstractionObserver]: Analyzing ICFG kbfiltr_simpl2.cil-2.c [2020-12-09 07:30:31,515 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 07:30:31,518 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 31 error locations. [2020-12-09 07:30:31,528 INFO L253 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2020-12-09 07:30:31,543 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 07:30:31,543 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 07:30:31,543 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 07:30:31,543 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 07:30:31,543 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 07:30:31,543 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 07:30:31,543 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 07:30:31,544 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 07:30:31,568 INFO L276 IsEmpty]: Start isEmpty. Operand 331 states. [2020-12-09 07:30:31,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-12-09 07:30:31,574 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:31,574 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:31,575 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:31,580 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:31,580 INFO L82 PathProgramCache]: Analyzing trace with hash 1805892157, now seen corresponding path program 1 times [2020-12-09 07:30:31,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:31,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406597302] [2020-12-09 07:30:31,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:31,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:31,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:31,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:31,722 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:31,723 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:31,723 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406597302] [2020-12-09 07:30:31,724 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:31,724 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:31,724 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2091036503] [2020-12-09 07:30:31,728 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:31,728 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:31,740 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:31,741 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:31,743 INFO L87 Difference]: Start difference. First operand 331 states. Second operand 3 states. [2020-12-09 07:30:31,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:31,824 INFO L93 Difference]: Finished difference Result 335 states and 461 transitions. [2020-12-09 07:30:31,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:31,825 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 7 [2020-12-09 07:30:31,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:31,841 INFO L225 Difference]: With dead ends: 335 [2020-12-09 07:30:31,842 INFO L226 Difference]: Without dead ends: 331 [2020-12-09 07:30:31,843 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:31,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 331 states. [2020-12-09 07:30:31,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 331 to 329. [2020-12-09 07:30:31,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 329 states. [2020-12-09 07:30:31,910 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 456 transitions. [2020-12-09 07:30:31,911 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 456 transitions. Word has length 7 [2020-12-09 07:30:31,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:31,911 INFO L481 AbstractCegarLoop]: Abstraction has 329 states and 456 transitions. [2020-12-09 07:30:31,912 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:31,912 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 456 transitions. [2020-12-09 07:30:31,913 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:30:31,913 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:31,913 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:32,114 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 07:30:32,115 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:32,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:32,116 INFO L82 PathProgramCache]: Analyzing trace with hash 557701687, now seen corresponding path program 1 times [2020-12-09 07:30:32,117 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:32,117 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1378166897] [2020-12-09 07:30:32,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:32,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:32,326 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:32,327 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:32,340 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:32,340 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:32,340 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1378166897] [2020-12-09 07:30:32,340 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:32,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:32,341 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1770971163] [2020-12-09 07:30:32,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:32,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:32,343 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:32,343 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:32,343 INFO L87 Difference]: Start difference. First operand 329 states and 456 transitions. Second operand 3 states. [2020-12-09 07:30:32,556 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:32,556 INFO L93 Difference]: Finished difference Result 378 states and 524 transitions. [2020-12-09 07:30:32,557 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:32,557 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-09 07:30:32,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:32,561 INFO L225 Difference]: With dead ends: 378 [2020-12-09 07:30:32,561 INFO L226 Difference]: Without dead ends: 378 [2020-12-09 07:30:32,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:32,564 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 378 states. [2020-12-09 07:30:32,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 378 to 357. [2020-12-09 07:30:32,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 357 states. [2020-12-09 07:30:32,585 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 357 states to 357 states and 495 transitions. [2020-12-09 07:30:32,585 INFO L78 Accepts]: Start accepts. Automaton has 357 states and 495 transitions. Word has length 13 [2020-12-09 07:30:32,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:32,586 INFO L481 AbstractCegarLoop]: Abstraction has 357 states and 495 transitions. [2020-12-09 07:30:32,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:32,586 INFO L276 IsEmpty]: Start isEmpty. Operand 357 states and 495 transitions. [2020-12-09 07:30:32,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-12-09 07:30:32,587 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:32,587 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:32,787 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 07:30:32,788 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:32,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:32,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1801870968, now seen corresponding path program 1 times [2020-12-09 07:30:32,789 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:32,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235019883] [2020-12-09 07:30:32,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:32,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:32,868 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:32,869 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:32,879 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:32,880 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:32,880 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235019883] [2020-12-09 07:30:32,880 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:32,880 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 07:30:32,880 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918007593] [2020-12-09 07:30:32,880 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:32,881 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:32,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:32,881 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:32,881 INFO L87 Difference]: Start difference. First operand 357 states and 495 transitions. Second operand 3 states. [2020-12-09 07:30:32,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:32,897 INFO L93 Difference]: Finished difference Result 356 states and 494 transitions. [2020-12-09 07:30:32,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:32,899 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-12-09 07:30:32,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:32,900 INFO L225 Difference]: With dead ends: 356 [2020-12-09 07:30:32,900 INFO L226 Difference]: Without dead ends: 351 [2020-12-09 07:30:32,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:32,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 351 states. [2020-12-09 07:30:32,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 351 to 351. [2020-12-09 07:30:32,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 351 states. [2020-12-09 07:30:32,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 351 states to 351 states and 479 transitions. [2020-12-09 07:30:32,910 INFO L78 Accepts]: Start accepts. Automaton has 351 states and 479 transitions. Word has length 13 [2020-12-09 07:30:32,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:32,910 INFO L481 AbstractCegarLoop]: Abstraction has 351 states and 479 transitions. [2020-12-09 07:30:32,910 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:32,910 INFO L276 IsEmpty]: Start isEmpty. Operand 351 states and 479 transitions. [2020-12-09 07:30:32,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-12-09 07:30:32,911 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:32,911 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:33,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 07:30:33,113 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:33,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:33,114 INFO L82 PathProgramCache]: Analyzing trace with hash 1900748477, now seen corresponding path program 1 times [2020-12-09 07:30:33,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:33,115 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1644149751] [2020-12-09 07:30:33,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:33,259 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:33,261 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:33,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:33,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:33,273 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:33,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1644149751] [2020-12-09 07:30:33,273 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:33,273 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:33,273 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225501413] [2020-12-09 07:30:33,274 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:33,274 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:33,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:33,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:33,274 INFO L87 Difference]: Start difference. First operand 351 states and 479 transitions. Second operand 3 states. [2020-12-09 07:30:33,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:33,307 INFO L93 Difference]: Finished difference Result 362 states and 491 transitions. [2020-12-09 07:30:33,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:33,308 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 15 [2020-12-09 07:30:33,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:33,310 INFO L225 Difference]: With dead ends: 362 [2020-12-09 07:30:33,310 INFO L226 Difference]: Without dead ends: 362 [2020-12-09 07:30:33,310 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:33,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 362 states. [2020-12-09 07:30:33,315 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 362 to 307. [2020-12-09 07:30:33,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 307 states. [2020-12-09 07:30:33,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 421 transitions. [2020-12-09 07:30:33,316 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 421 transitions. Word has length 15 [2020-12-09 07:30:33,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:33,316 INFO L481 AbstractCegarLoop]: Abstraction has 307 states and 421 transitions. [2020-12-09 07:30:33,316 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:33,316 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 421 transitions. [2020-12-09 07:30:33,318 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-12-09 07:30:33,318 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:33,318 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:33,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 07:30:33,520 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:33,520 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:33,520 INFO L82 PathProgramCache]: Analyzing trace with hash 306593718, now seen corresponding path program 1 times [2020-12-09 07:30:33,521 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:33,521 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [626111292] [2020-12-09 07:30:33,521 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:33,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:33,621 INFO L263 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:33,622 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:33,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:33,638 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:33,638 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [626111292] [2020-12-09 07:30:33,638 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:33,638 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:33,638 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840329090] [2020-12-09 07:30:33,639 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:33,639 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:33,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:33,639 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:33,639 INFO L87 Difference]: Start difference. First operand 307 states and 421 transitions. Second operand 3 states. [2020-12-09 07:30:33,759 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:33,759 INFO L93 Difference]: Finished difference Result 293 states and 407 transitions. [2020-12-09 07:30:33,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:33,760 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-12-09 07:30:33,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:33,762 INFO L225 Difference]: With dead ends: 293 [2020-12-09 07:30:33,762 INFO L226 Difference]: Without dead ends: 293 [2020-12-09 07:30:33,762 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:33,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2020-12-09 07:30:33,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2020-12-09 07:30:33,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 293 states. [2020-12-09 07:30:33,770 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 407 transitions. [2020-12-09 07:30:33,770 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 407 transitions. Word has length 21 [2020-12-09 07:30:33,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:33,770 INFO L481 AbstractCegarLoop]: Abstraction has 293 states and 407 transitions. [2020-12-09 07:30:33,770 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:33,770 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 407 transitions. [2020-12-09 07:30:33,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-12-09 07:30:33,773 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:33,773 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:33,973 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 07:30:33,975 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:33,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:33,976 INFO L82 PathProgramCache]: Analyzing trace with hash 847063989, now seen corresponding path program 1 times [2020-12-09 07:30:33,977 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:33,978 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [14285327] [2020-12-09 07:30:33,978 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:34,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:34,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:34,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:34,303 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:34,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:34,304 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [14285327] [2020-12-09 07:30:34,304 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:34,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:34,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [769136582] [2020-12-09 07:30:34,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:34,305 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:34,305 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:34,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:34,305 INFO L87 Difference]: Start difference. First operand 293 states and 407 transitions. Second operand 4 states. [2020-12-09 07:30:34,453 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:34,453 INFO L93 Difference]: Finished difference Result 310 states and 426 transitions. [2020-12-09 07:30:34,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:34,453 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2020-12-09 07:30:34,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:34,455 INFO L225 Difference]: With dead ends: 310 [2020-12-09 07:30:34,456 INFO L226 Difference]: Without dead ends: 309 [2020-12-09 07:30:34,456 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:34,457 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2020-12-09 07:30:34,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 305. [2020-12-09 07:30:34,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-12-09 07:30:34,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 422 transitions. [2020-12-09 07:30:34,464 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 422 transitions. Word has length 26 [2020-12-09 07:30:34,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:34,464 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 422 transitions. [2020-12-09 07:30:34,465 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:34,465 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 422 transitions. [2020-12-09 07:30:34,466 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 07:30:34,466 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:34,466 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:34,667 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 07:30:34,668 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:34,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:34,669 INFO L82 PathProgramCache]: Analyzing trace with hash -1660315800, now seen corresponding path program 1 times [2020-12-09 07:30:34,670 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:34,670 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2083578679] [2020-12-09 07:30:34,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:34,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:34,765 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:34,767 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:34,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:34,784 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:34,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2083578679] [2020-12-09 07:30:34,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:34,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:34,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492100776] [2020-12-09 07:30:34,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:34,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:34,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:34,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:34,785 INFO L87 Difference]: Start difference. First operand 305 states and 422 transitions. Second operand 3 states. [2020-12-09 07:30:34,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:34,870 INFO L93 Difference]: Finished difference Result 302 states and 418 transitions. [2020-12-09 07:30:34,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:34,870 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-09 07:30:34,870 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:34,872 INFO L225 Difference]: With dead ends: 302 [2020-12-09 07:30:34,872 INFO L226 Difference]: Without dead ends: 302 [2020-12-09 07:30:34,872 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:34,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-12-09 07:30:34,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 302. [2020-12-09 07:30:34,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-09 07:30:34,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 418 transitions. [2020-12-09 07:30:34,877 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 418 transitions. Word has length 27 [2020-12-09 07:30:34,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:34,877 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 418 transitions. [2020-12-09 07:30:34,877 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:34,877 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 418 transitions. [2020-12-09 07:30:34,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 07:30:34,878 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:34,878 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:35,079 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 07:30:35,080 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:35,081 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:35,082 INFO L82 PathProgramCache]: Analyzing trace with hash -23036524, now seen corresponding path program 1 times [2020-12-09 07:30:35,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:35,084 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1138638532] [2020-12-09 07:30:35,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:35,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:35,200 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:35,201 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:35,217 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:35,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:35,217 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1138638532] [2020-12-09 07:30:35,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:35,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:35,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42224388] [2020-12-09 07:30:35,218 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:35,218 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:35,218 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:35,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:35,219 INFO L87 Difference]: Start difference. First operand 302 states and 418 transitions. Second operand 3 states. [2020-12-09 07:30:35,239 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:35,239 INFO L93 Difference]: Finished difference Result 315 states and 432 transitions. [2020-12-09 07:30:35,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:35,240 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-12-09 07:30:35,240 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:35,241 INFO L225 Difference]: With dead ends: 315 [2020-12-09 07:30:35,241 INFO L226 Difference]: Without dead ends: 315 [2020-12-09 07:30:35,241 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:35,242 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2020-12-09 07:30:35,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 302. [2020-12-09 07:30:35,245 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-09 07:30:35,246 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 417 transitions. [2020-12-09 07:30:35,246 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 417 transitions. Word has length 27 [2020-12-09 07:30:35,246 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:35,246 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 417 transitions. [2020-12-09 07:30:35,246 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:35,247 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 417 transitions. [2020-12-09 07:30:35,247 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-12-09 07:30:35,247 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:35,247 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:35,448 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 07:30:35,449 INFO L429 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:35,449 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:35,449 INFO L82 PathProgramCache]: Analyzing trace with hash 476963846, now seen corresponding path program 1 times [2020-12-09 07:30:35,450 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:35,450 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1981811325] [2020-12-09 07:30:35,450 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:35,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:35,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 121 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:35,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:35,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:35,621 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:35,621 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1981811325] [2020-12-09 07:30:35,621 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:35,621 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:35,621 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099007294] [2020-12-09 07:30:35,621 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:35,621 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:35,622 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:35,622 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:35,622 INFO L87 Difference]: Start difference. First operand 302 states and 417 transitions. Second operand 4 states. [2020-12-09 07:30:35,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:35,747 INFO L93 Difference]: Finished difference Result 306 states and 419 transitions. [2020-12-09 07:30:35,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:35,748 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 27 [2020-12-09 07:30:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:35,749 INFO L225 Difference]: With dead ends: 306 [2020-12-09 07:30:35,749 INFO L226 Difference]: Without dead ends: 306 [2020-12-09 07:30:35,749 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:35,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 306 states. [2020-12-09 07:30:35,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 306 to 302. [2020-12-09 07:30:35,753 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-12-09 07:30:35,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 416 transitions. [2020-12-09 07:30:35,754 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 416 transitions. Word has length 27 [2020-12-09 07:30:35,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:35,754 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 416 transitions. [2020-12-09 07:30:35,754 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:35,754 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 416 transitions. [2020-12-09 07:30:35,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-12-09 07:30:35,755 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:35,755 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:35,956 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2020-12-09 07:30:35,957 INFO L429 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:35,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:35,957 INFO L82 PathProgramCache]: Analyzing trace with hash 1894183263, now seen corresponding path program 1 times [2020-12-09 07:30:35,958 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:35,958 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1313448445] [2020-12-09 07:30:35,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:36,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:36,049 INFO L263 TraceCheckSpWp]: Trace formula consists of 122 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:36,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:36,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:36,067 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:36,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1313448445] [2020-12-09 07:30:36,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:36,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:36,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1072563654] [2020-12-09 07:30:36,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:36,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:36,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:36,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:36,068 INFO L87 Difference]: Start difference. First operand 302 states and 416 transitions. Second operand 3 states. [2020-12-09 07:30:36,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:36,081 INFO L93 Difference]: Finished difference Result 295 states and 404 transitions. [2020-12-09 07:30:36,081 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:36,081 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-12-09 07:30:36,081 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:36,082 INFO L225 Difference]: With dead ends: 295 [2020-12-09 07:30:36,083 INFO L226 Difference]: Without dead ends: 273 [2020-12-09 07:30:36,083 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:36,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-12-09 07:30:36,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 249. [2020-12-09 07:30:36,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-12-09 07:30:36,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 347 transitions. [2020-12-09 07:30:36,087 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 347 transitions. Word has length 28 [2020-12-09 07:30:36,087 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:36,087 INFO L481 AbstractCegarLoop]: Abstraction has 249 states and 347 transitions. [2020-12-09 07:30:36,087 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:36,087 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 347 transitions. [2020-12-09 07:30:36,087 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-12-09 07:30:36,087 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:36,087 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:36,288 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2020-12-09 07:30:36,289 INFO L429 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:36,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:36,289 INFO L82 PathProgramCache]: Analyzing trace with hash 403678015, now seen corresponding path program 1 times [2020-12-09 07:30:36,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:36,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [351702192] [2020-12-09 07:30:36,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:36,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:36,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 149 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:36,429 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:36,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:36,454 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:36,455 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [351702192] [2020-12-09 07:30:36,455 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:36,455 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:36,455 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [774751208] [2020-12-09 07:30:36,455 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:36,455 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:36,456 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:36,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:36,456 INFO L87 Difference]: Start difference. First operand 249 states and 347 transitions. Second operand 4 states. [2020-12-09 07:30:36,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:36,507 INFO L93 Difference]: Finished difference Result 242 states and 337 transitions. [2020-12-09 07:30:36,507 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:36,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 30 [2020-12-09 07:30:36,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:36,508 INFO L225 Difference]: With dead ends: 242 [2020-12-09 07:30:36,508 INFO L226 Difference]: Without dead ends: 242 [2020-12-09 07:30:36,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:36,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-09 07:30:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-12-09 07:30:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 07:30:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 337 transitions. [2020-12-09 07:30:36,512 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 337 transitions. Word has length 30 [2020-12-09 07:30:36,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:36,512 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 337 transitions. [2020-12-09 07:30:36,512 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 337 transitions. [2020-12-09 07:30:36,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 07:30:36,513 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:36,513 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:36,713 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2020-12-09 07:30:36,714 INFO L429 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:36,714 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:36,714 INFO L82 PathProgramCache]: Analyzing trace with hash -959450186, now seen corresponding path program 1 times [2020-12-09 07:30:36,714 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:36,715 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [487792661] [2020-12-09 07:30:36,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:36,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:36,792 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:36,794 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:36,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:36,836 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:36,836 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [487792661] [2020-12-09 07:30:36,837 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:36,837 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:36,837 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [147502231] [2020-12-09 07:30:36,837 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:36,837 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:36,837 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:36,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:36,838 INFO L87 Difference]: Start difference. First operand 242 states and 337 transitions. Second operand 4 states. [2020-12-09 07:30:36,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:36,970 INFO L93 Difference]: Finished difference Result 242 states and 330 transitions. [2020-12-09 07:30:36,970 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:36,970 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-09 07:30:36,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:36,971 INFO L225 Difference]: With dead ends: 242 [2020-12-09 07:30:36,971 INFO L226 Difference]: Without dead ends: 242 [2020-12-09 07:30:36,972 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:36,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-09 07:30:36,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-12-09 07:30:36,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 07:30:36,975 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 330 transitions. [2020-12-09 07:30:36,975 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 330 transitions. Word has length 31 [2020-12-09 07:30:36,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:36,976 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 330 transitions. [2020-12-09 07:30:36,976 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:36,976 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 330 transitions. [2020-12-09 07:30:36,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-12-09 07:30:36,976 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:36,976 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:37,177 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2020-12-09 07:30:37,178 INFO L429 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:37,179 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:37,179 INFO L82 PathProgramCache]: Analyzing trace with hash -841653818, now seen corresponding path program 1 times [2020-12-09 07:30:37,180 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:37,180 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [886202356] [2020-12-09 07:30:37,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:37,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:37,316 INFO L263 TraceCheckSpWp]: Trace formula consists of 151 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:37,317 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:37,355 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:37,355 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:37,355 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [886202356] [2020-12-09 07:30:37,355 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:37,356 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:37,356 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2000488964] [2020-12-09 07:30:37,356 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:37,356 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:37,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:37,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:37,357 INFO L87 Difference]: Start difference. First operand 242 states and 330 transitions. Second operand 4 states. [2020-12-09 07:30:37,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:37,464 INFO L93 Difference]: Finished difference Result 242 states and 329 transitions. [2020-12-09 07:30:37,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:37,465 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 31 [2020-12-09 07:30:37,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:37,466 INFO L225 Difference]: With dead ends: 242 [2020-12-09 07:30:37,466 INFO L226 Difference]: Without dead ends: 242 [2020-12-09 07:30:37,466 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:37,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-12-09 07:30:37,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 242. [2020-12-09 07:30:37,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 242 states. [2020-12-09 07:30:37,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 329 transitions. [2020-12-09 07:30:37,470 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 329 transitions. Word has length 31 [2020-12-09 07:30:37,470 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:37,470 INFO L481 AbstractCegarLoop]: Abstraction has 242 states and 329 transitions. [2020-12-09 07:30:37,470 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:37,470 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 329 transitions. [2020-12-09 07:30:37,471 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 07:30:37,471 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:37,471 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:37,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2020-12-09 07:30:37,672 INFO L429 AbstractCegarLoop]: === Iteration 14 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:37,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:37,672 INFO L82 PathProgramCache]: Analyzing trace with hash 2012498225, now seen corresponding path program 1 times [2020-12-09 07:30:37,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:37,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1405944899] [2020-12-09 07:30:37,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 15 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 15 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:37,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:37,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 131 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:30:37,754 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:37,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:37,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:37,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1405944899] [2020-12-09 07:30:37,818 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:37,818 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:37,818 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [547057763] [2020-12-09 07:30:37,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:37,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:37,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:37,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:37,819 INFO L87 Difference]: Start difference. First operand 242 states and 329 transitions. Second operand 8 states. [2020-12-09 07:30:38,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:38,176 INFO L93 Difference]: Finished difference Result 329 states and 422 transitions. [2020-12-09 07:30:38,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-09 07:30:38,177 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-12-09 07:30:38,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:38,178 INFO L225 Difference]: With dead ends: 329 [2020-12-09 07:30:38,178 INFO L226 Difference]: Without dead ends: 302 [2020-12-09 07:30:38,179 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2020-12-09 07:30:38,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 302 states. [2020-12-09 07:30:38,181 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 302 to 255. [2020-12-09 07:30:38,181 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 255 states. [2020-12-09 07:30:38,182 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 344 transitions. [2020-12-09 07:30:38,182 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 344 transitions. Word has length 33 [2020-12-09 07:30:38,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:38,183 INFO L481 AbstractCegarLoop]: Abstraction has 255 states and 344 transitions. [2020-12-09 07:30:38,183 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 344 transitions. [2020-12-09 07:30:38,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-12-09 07:30:38,183 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:38,183 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:38,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 mathsat -unsat_core_generation=3 [2020-12-09 07:30:38,385 INFO L429 AbstractCegarLoop]: === Iteration 15 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:38,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:38,386 INFO L82 PathProgramCache]: Analyzing trace with hash -1889062697, now seen corresponding path program 1 times [2020-12-09 07:30:38,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:38,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [606353594] [2020-12-09 07:30:38,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 16 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 16 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:38,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:38,745 INFO L263 TraceCheckSpWp]: Trace formula consists of 157 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:30:38,746 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:38,772 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:38,772 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:38,772 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [606353594] [2020-12-09 07:30:38,772 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:38,772 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:30:38,772 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1172011203] [2020-12-09 07:30:38,773 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:30:38,773 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:38,773 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:30:38,773 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:38,773 INFO L87 Difference]: Start difference. First operand 255 states and 344 transitions. Second operand 5 states. [2020-12-09 07:30:38,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:38,896 INFO L93 Difference]: Finished difference Result 285 states and 373 transitions. [2020-12-09 07:30:38,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:30:38,897 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-12-09 07:30:38,897 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:38,898 INFO L225 Difference]: With dead ends: 285 [2020-12-09 07:30:38,898 INFO L226 Difference]: Without dead ends: 278 [2020-12-09 07:30:38,899 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:38,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2020-12-09 07:30:38,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 251. [2020-12-09 07:30:38,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 251 states. [2020-12-09 07:30:38,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 251 states to 251 states and 339 transitions. [2020-12-09 07:30:38,902 INFO L78 Accepts]: Start accepts. Automaton has 251 states and 339 transitions. Word has length 33 [2020-12-09 07:30:38,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:38,902 INFO L481 AbstractCegarLoop]: Abstraction has 251 states and 339 transitions. [2020-12-09 07:30:38,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:30:38,902 INFO L276 IsEmpty]: Start isEmpty. Operand 251 states and 339 transitions. [2020-12-09 07:30:38,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:38,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:38,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:39,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 mathsat -unsat_core_generation=3 [2020-12-09 07:30:39,105 INFO L429 AbstractCegarLoop]: === Iteration 16 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:39,105 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:39,106 INFO L82 PathProgramCache]: Analyzing trace with hash 689228260, now seen corresponding path program 1 times [2020-12-09 07:30:39,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:39,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1714202869] [2020-12-09 07:30:39,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 17 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 17 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:39,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:39,237 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:30:39,238 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:39,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:39,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:39,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1714202869] [2020-12-09 07:30:39,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:39,307 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:39,307 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594939823] [2020-12-09 07:30:39,307 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:39,307 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:39,308 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:39,308 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:39,308 INFO L87 Difference]: Start difference. First operand 251 states and 339 transitions. Second operand 8 states. [2020-12-09 07:30:39,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:39,634 INFO L93 Difference]: Finished difference Result 338 states and 432 transitions. [2020-12-09 07:30:39,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:30:39,635 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-09 07:30:39,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:39,636 INFO L225 Difference]: With dead ends: 338 [2020-12-09 07:30:39,636 INFO L226 Difference]: Without dead ends: 311 [2020-12-09 07:30:39,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:30:39,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 311 states. [2020-12-09 07:30:39,639 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 311 to 252. [2020-12-09 07:30:39,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 252 states. [2020-12-09 07:30:39,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 338 transitions. [2020-12-09 07:30:39,640 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 338 transitions. Word has length 34 [2020-12-09 07:30:39,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:39,640 INFO L481 AbstractCegarLoop]: Abstraction has 252 states and 338 transitions. [2020-12-09 07:30:39,640 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:39,640 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 338 transitions. [2020-12-09 07:30:39,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:39,641 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:39,641 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:39,842 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 mathsat -unsat_core_generation=3 [2020-12-09 07:30:39,843 INFO L429 AbstractCegarLoop]: === Iteration 17 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:39,843 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:39,844 INFO L82 PathProgramCache]: Analyzing trace with hash 1401702948, now seen corresponding path program 1 times [2020-12-09 07:30:39,844 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:39,845 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [366549116] [2020-12-09 07:30:39,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 18 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 18 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:40,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 07:30:40,103 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:40,172 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:40,172 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:40,172 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [366549116] [2020-12-09 07:30:40,172 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:40,172 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:40,172 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733643899] [2020-12-09 07:30:40,173 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:40,173 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:40,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:40,173 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:40,173 INFO L87 Difference]: Start difference. First operand 252 states and 338 transitions. Second operand 8 states. [2020-12-09 07:30:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:40,445 INFO L93 Difference]: Finished difference Result 301 states and 379 transitions. [2020-12-09 07:30:40,445 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:30:40,445 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-12-09 07:30:40,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:40,447 INFO L225 Difference]: With dead ends: 301 [2020-12-09 07:30:40,447 INFO L226 Difference]: Without dead ends: 250 [2020-12-09 07:30:40,447 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:30:40,447 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 250 states. [2020-12-09 07:30:40,449 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 250 to 210. [2020-12-09 07:30:40,449 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 210 states. [2020-12-09 07:30:40,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 210 states to 210 states and 279 transitions. [2020-12-09 07:30:40,450 INFO L78 Accepts]: Start accepts. Automaton has 210 states and 279 transitions. Word has length 34 [2020-12-09 07:30:40,450 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:40,450 INFO L481 AbstractCegarLoop]: Abstraction has 210 states and 279 transitions. [2020-12-09 07:30:40,450 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:40,450 INFO L276 IsEmpty]: Start isEmpty. Operand 210 states and 279 transitions. [2020-12-09 07:30:40,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:40,450 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:40,451 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:40,651 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 mathsat -unsat_core_generation=3 [2020-12-09 07:30:40,652 INFO L429 AbstractCegarLoop]: === Iteration 18 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:40,653 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:40,653 INFO L82 PathProgramCache]: Analyzing trace with hash 1662125936, now seen corresponding path program 1 times [2020-12-09 07:30:40,654 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:40,654 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [27031787] [2020-12-09 07:30:40,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 19 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 19 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:40,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:40,758 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:30:40,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:40,793 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:40,793 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:40,793 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [27031787] [2020-12-09 07:30:40,794 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:40,794 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:30:40,794 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011204015] [2020-12-09 07:30:40,794 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:30:40,794 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:40,795 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:30:40,795 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:40,795 INFO L87 Difference]: Start difference. First operand 210 states and 279 transitions. Second operand 5 states. [2020-12-09 07:30:40,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:40,898 INFO L93 Difference]: Finished difference Result 245 states and 316 transitions. [2020-12-09 07:30:40,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:30:40,899 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-09 07:30:40,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:40,900 INFO L225 Difference]: With dead ends: 245 [2020-12-09 07:30:40,900 INFO L226 Difference]: Without dead ends: 238 [2020-12-09 07:30:40,900 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:40,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-12-09 07:30:40,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 199. [2020-12-09 07:30:40,903 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-09 07:30:40,903 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 266 transitions. [2020-12-09 07:30:40,903 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 266 transitions. Word has length 34 [2020-12-09 07:30:40,903 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:40,903 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 266 transitions. [2020-12-09 07:30:40,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:30:40,903 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 266 transitions. [2020-12-09 07:30:40,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:40,904 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:40,904 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:41,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 mathsat -unsat_core_generation=3 [2020-12-09 07:30:41,105 INFO L429 AbstractCegarLoop]: === Iteration 19 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:41,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:41,107 INFO L82 PathProgramCache]: Analyzing trace with hash -822248422, now seen corresponding path program 1 times [2020-12-09 07:30:41,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:41,108 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1636837422] [2020-12-09 07:30:41,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 20 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 20 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:41,352 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:41,356 INFO L263 TraceCheckSpWp]: Trace formula consists of 155 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 07:30:41,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:41,389 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:41,389 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:41,389 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1636837422] [2020-12-09 07:30:41,389 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:41,390 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-12-09 07:30:41,390 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187612668] [2020-12-09 07:30:41,390 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-12-09 07:30:41,390 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:41,391 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-12-09 07:30:41,391 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:41,391 INFO L87 Difference]: Start difference. First operand 199 states and 266 transitions. Second operand 5 states. [2020-12-09 07:30:41,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:41,489 INFO L93 Difference]: Finished difference Result 226 states and 292 transitions. [2020-12-09 07:30:41,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-12-09 07:30:41,490 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 34 [2020-12-09 07:30:41,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:41,491 INFO L225 Difference]: With dead ends: 226 [2020-12-09 07:30:41,491 INFO L226 Difference]: Without dead ends: 226 [2020-12-09 07:30:41,491 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:41,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 226 states. [2020-12-09 07:30:41,493 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 226 to 199. [2020-12-09 07:30:41,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 199 states. [2020-12-09 07:30:41,494 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 265 transitions. [2020-12-09 07:30:41,494 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 265 transitions. Word has length 34 [2020-12-09 07:30:41,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:41,495 INFO L481 AbstractCegarLoop]: Abstraction has 199 states and 265 transitions. [2020-12-09 07:30:41,495 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-12-09 07:30:41,495 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 265 transitions. [2020-12-09 07:30:41,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:41,495 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:41,496 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:41,696 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 mathsat -unsat_core_generation=3 [2020-12-09 07:30:41,697 INFO L429 AbstractCegarLoop]: === Iteration 20 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:41,698 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:41,698 INFO L82 PathProgramCache]: Analyzing trace with hash -864264718, now seen corresponding path program 1 times [2020-12-09 07:30:41,699 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:41,700 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1914063397] [2020-12-09 07:30:41,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 21 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 21 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:41,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:41,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 159 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:41,799 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:41,818 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:41,818 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:41,818 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1914063397] [2020-12-09 07:30:41,819 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:41,819 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:41,819 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783645484] [2020-12-09 07:30:41,819 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:41,819 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:41,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:41,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:41,819 INFO L87 Difference]: Start difference. First operand 199 states and 265 transitions. Second operand 3 states. [2020-12-09 07:30:41,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:41,872 INFO L93 Difference]: Finished difference Result 214 states and 276 transitions. [2020-12-09 07:30:41,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:41,872 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 34 [2020-12-09 07:30:41,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:41,873 INFO L225 Difference]: With dead ends: 214 [2020-12-09 07:30:41,873 INFO L226 Difference]: Without dead ends: 214 [2020-12-09 07:30:41,873 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:41,874 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 214 states. [2020-12-09 07:30:41,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 214 to 188. [2020-12-09 07:30:41,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 188 states. [2020-12-09 07:30:41,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 188 states to 188 states and 250 transitions. [2020-12-09 07:30:41,876 INFO L78 Accepts]: Start accepts. Automaton has 188 states and 250 transitions. Word has length 34 [2020-12-09 07:30:41,876 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:41,876 INFO L481 AbstractCegarLoop]: Abstraction has 188 states and 250 transitions. [2020-12-09 07:30:41,876 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:41,876 INFO L276 IsEmpty]: Start isEmpty. Operand 188 states and 250 transitions. [2020-12-09 07:30:41,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-12-09 07:30:41,877 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:41,877 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:42,077 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 mathsat -unsat_core_generation=3 [2020-12-09 07:30:42,078 INFO L429 AbstractCegarLoop]: === Iteration 21 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:42,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:42,080 INFO L82 PathProgramCache]: Analyzing trace with hash 1935189253, now seen corresponding path program 1 times [2020-12-09 07:30:42,080 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:42,081 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [801464588] [2020-12-09 07:30:42,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 22 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 22 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:42,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:42,170 INFO L263 TraceCheckSpWp]: Trace formula consists of 127 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:42,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:42,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:42,218 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:42,218 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [801464588] [2020-12-09 07:30:42,218 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:42,218 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 07:30:42,218 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1474967821] [2020-12-09 07:30:42,219 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:30:42,219 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:42,219 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:30:42,219 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:42,219 INFO L87 Difference]: Start difference. First operand 188 states and 250 transitions. Second operand 7 states. [2020-12-09 07:30:42,359 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:42,359 INFO L93 Difference]: Finished difference Result 204 states and 268 transitions. [2020-12-09 07:30:42,359 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-12-09 07:30:42,360 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-12-09 07:30:42,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:42,360 INFO L225 Difference]: With dead ends: 204 [2020-12-09 07:30:42,360 INFO L226 Difference]: Without dead ends: 187 [2020-12-09 07:30:42,361 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:30:42,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 187 states. [2020-12-09 07:30:42,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 187 to 187. [2020-12-09 07:30:42,363 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-12-09 07:30:42,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 248 transitions. [2020-12-09 07:30:42,363 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 248 transitions. Word has length 34 [2020-12-09 07:30:42,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:42,363 INFO L481 AbstractCegarLoop]: Abstraction has 187 states and 248 transitions. [2020-12-09 07:30:42,363 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:30:42,363 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 248 transitions. [2020-12-09 07:30:42,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:30:42,364 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:42,364 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:42,564 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 mathsat -unsat_core_generation=3 [2020-12-09 07:30:42,565 INFO L429 AbstractCegarLoop]: === Iteration 22 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:42,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:42,567 INFO L82 PathProgramCache]: Analyzing trace with hash -1030061199, now seen corresponding path program 1 times [2020-12-09 07:30:42,567 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:42,568 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1563341199] [2020-12-09 07:30:42,568 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 23 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 23 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:42,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:42,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 07:30:42,666 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:42,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:42,687 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:42,687 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1563341199] [2020-12-09 07:30:42,687 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:42,687 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-12-09 07:30:42,687 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339209557] [2020-12-09 07:30:42,687 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 07:30:42,687 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:42,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 07:30:42,688 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:42,688 INFO L87 Difference]: Start difference. First operand 187 states and 248 transitions. Second operand 3 states. [2020-12-09 07:30:42,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:42,697 INFO L93 Difference]: Finished difference Result 183 states and 244 transitions. [2020-12-09 07:30:42,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 07:30:42,698 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 35 [2020-12-09 07:30:42,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:42,699 INFO L225 Difference]: With dead ends: 183 [2020-12-09 07:30:42,699 INFO L226 Difference]: Without dead ends: 162 [2020-12-09 07:30:42,699 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 07:30:42,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2020-12-09 07:30:42,700 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 162. [2020-12-09 07:30:42,700 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-12-09 07:30:42,701 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 223 transitions. [2020-12-09 07:30:42,701 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 223 transitions. Word has length 35 [2020-12-09 07:30:42,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:42,701 INFO L481 AbstractCegarLoop]: Abstraction has 162 states and 223 transitions. [2020-12-09 07:30:42,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 07:30:42,701 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 223 transitions. [2020-12-09 07:30:42,701 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:30:42,702 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:42,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:42,902 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 mathsat -unsat_core_generation=3 [2020-12-09 07:30:42,903 INFO L429 AbstractCegarLoop]: === Iteration 23 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:42,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:42,904 INFO L82 PathProgramCache]: Analyzing trace with hash -2102888975, now seen corresponding path program 1 times [2020-12-09 07:30:42,905 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:42,905 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1438470049] [2020-12-09 07:30:42,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 24 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 24 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:43,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:43,077 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 07:30:43,078 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:43,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:43,110 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:43,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1438470049] [2020-12-09 07:30:43,110 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:43,110 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 07:30:43,110 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831152845] [2020-12-09 07:30:43,110 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 07:30:43,110 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:43,111 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 07:30:43,111 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 07:30:43,111 INFO L87 Difference]: Start difference. First operand 162 states and 223 transitions. Second operand 4 states. [2020-12-09 07:30:43,160 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:43,160 INFO L93 Difference]: Finished difference Result 153 states and 204 transitions. [2020-12-09 07:30:43,161 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 07:30:43,161 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 35 [2020-12-09 07:30:43,161 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:43,162 INFO L225 Difference]: With dead ends: 153 [2020-12-09 07:30:43,162 INFO L226 Difference]: Without dead ends: 153 [2020-12-09 07:30:43,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 07:30:43,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-12-09 07:30:43,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 145. [2020-12-09 07:30:43,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 145 states. [2020-12-09 07:30:43,164 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 196 transitions. [2020-12-09 07:30:43,164 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 196 transitions. Word has length 35 [2020-12-09 07:30:43,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:43,165 INFO L481 AbstractCegarLoop]: Abstraction has 145 states and 196 transitions. [2020-12-09 07:30:43,165 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 07:30:43,165 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 196 transitions. [2020-12-09 07:30:43,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:30:43,165 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:43,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:43,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 mathsat -unsat_core_generation=3 [2020-12-09 07:30:43,367 INFO L429 AbstractCegarLoop]: === Iteration 24 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:43,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:43,368 INFO L82 PathProgramCache]: Analyzing trace with hash -1665760845, now seen corresponding path program 1 times [2020-12-09 07:30:43,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:43,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [725095250] [2020-12-09 07:30:43,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 25 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 25 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:43,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:43,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 128 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:43,457 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:43,510 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:43,511 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:43,511 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [725095250] [2020-12-09 07:30:43,511 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:43,511 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:43,511 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1858413484] [2020-12-09 07:30:43,511 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:43,511 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:43,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:43,512 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:43,512 INFO L87 Difference]: Start difference. First operand 145 states and 196 transitions. Second operand 8 states. [2020-12-09 07:30:43,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:43,731 INFO L93 Difference]: Finished difference Result 189 states and 240 transitions. [2020-12-09 07:30:43,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 07:30:43,732 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-12-09 07:30:43,732 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:43,732 INFO L225 Difference]: With dead ends: 189 [2020-12-09 07:30:43,732 INFO L226 Difference]: Without dead ends: 160 [2020-12-09 07:30:43,733 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=140, Unknown=0, NotChecked=0, Total=210 [2020-12-09 07:30:43,733 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-12-09 07:30:43,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 142. [2020-12-09 07:30:43,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 142 states. [2020-12-09 07:30:43,734 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 190 transitions. [2020-12-09 07:30:43,735 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 190 transitions. Word has length 35 [2020-12-09 07:30:43,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:43,735 INFO L481 AbstractCegarLoop]: Abstraction has 142 states and 190 transitions. [2020-12-09 07:30:43,735 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:43,735 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 190 transitions. [2020-12-09 07:30:43,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:30:43,735 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:43,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:43,936 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 mathsat -unsat_core_generation=3 [2020-12-09 07:30:43,937 INFO L429 AbstractCegarLoop]: === Iteration 25 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:43,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:43,938 INFO L82 PathProgramCache]: Analyzing trace with hash 1804254012, now seen corresponding path program 1 times [2020-12-09 07:30:43,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:43,939 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828353637] [2020-12-09 07:30:43,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 26 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 26 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:44,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:44,028 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:44,029 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:44,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:44,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:44,079 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828353637] [2020-12-09 07:30:44,079 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:44,080 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 07:30:44,080 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [26876639] [2020-12-09 07:30:44,080 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:30:44,080 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:44,080 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:30:44,080 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:44,080 INFO L87 Difference]: Start difference. First operand 142 states and 190 transitions. Second operand 7 states. [2020-12-09 07:30:44,186 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:44,186 INFO L93 Difference]: Finished difference Result 157 states and 205 transitions. [2020-12-09 07:30:44,187 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:30:44,187 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-09 07:30:44,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:44,188 INFO L225 Difference]: With dead ends: 157 [2020-12-09 07:30:44,188 INFO L226 Difference]: Without dead ends: 141 [2020-12-09 07:30:44,188 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:30:44,188 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-12-09 07:30:44,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 141. [2020-12-09 07:30:44,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 141 states. [2020-12-09 07:30:44,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 141 states to 141 states and 188 transitions. [2020-12-09 07:30:44,190 INFO L78 Accepts]: Start accepts. Automaton has 141 states and 188 transitions. Word has length 35 [2020-12-09 07:30:44,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:44,190 INFO L481 AbstractCegarLoop]: Abstraction has 141 states and 188 transitions. [2020-12-09 07:30:44,190 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:30:44,190 INFO L276 IsEmpty]: Start isEmpty. Operand 141 states and 188 transitions. [2020-12-09 07:30:44,190 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-12-09 07:30:44,190 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:44,190 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:44,391 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 mathsat -unsat_core_generation=3 [2020-12-09 07:30:44,392 INFO L429 AbstractCegarLoop]: === Iteration 26 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:44,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:44,393 INFO L82 PathProgramCache]: Analyzing trace with hash -805162244, now seen corresponding path program 1 times [2020-12-09 07:30:44,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:44,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [539373440] [2020-12-09 07:30:44,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 27 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 27 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:44,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:44,749 INFO L263 TraceCheckSpWp]: Trace formula consists of 129 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:44,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:44,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:44,798 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:44,798 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [539373440] [2020-12-09 07:30:44,798 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:44,798 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-09 07:30:44,798 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2142163684] [2020-12-09 07:30:44,798 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 07:30:44,798 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:44,799 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 07:30:44,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-09 07:30:44,799 INFO L87 Difference]: Start difference. First operand 141 states and 188 transitions. Second operand 7 states. [2020-12-09 07:30:44,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:44,899 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2020-12-09 07:30:44,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 07:30:44,900 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-12-09 07:30:44,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:44,900 INFO L225 Difference]: With dead ends: 150 [2020-12-09 07:30:44,901 INFO L226 Difference]: Without dead ends: 122 [2020-12-09 07:30:44,901 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-12-09 07:30:44,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-12-09 07:30:44,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2020-12-09 07:30:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 122 states. [2020-12-09 07:30:44,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 163 transitions. [2020-12-09 07:30:44,902 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 163 transitions. Word has length 35 [2020-12-09 07:30:44,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:44,903 INFO L481 AbstractCegarLoop]: Abstraction has 122 states and 163 transitions. [2020-12-09 07:30:44,903 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 07:30:44,903 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 163 transitions. [2020-12-09 07:30:44,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 07:30:44,903 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:44,903 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:45,104 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 27 mathsat -unsat_core_generation=3 [2020-12-09 07:30:45,104 INFO L429 AbstractCegarLoop]: === Iteration 27 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:45,104 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:45,105 INFO L82 PathProgramCache]: Analyzing trace with hash 1628575734, now seen corresponding path program 1 times [2020-12-09 07:30:45,105 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:45,105 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1892241991] [2020-12-09 07:30:45,105 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 28 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 28 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:45,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:45,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:45,285 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:45,341 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:45,341 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:45,341 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1892241991] [2020-12-09 07:30:45,341 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:45,341 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:45,342 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [493833236] [2020-12-09 07:30:45,342 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:45,342 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:45,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:45,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:45,342 INFO L87 Difference]: Start difference. First operand 122 states and 163 transitions. Second operand 8 states. [2020-12-09 07:30:45,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:45,529 INFO L93 Difference]: Finished difference Result 168 states and 209 transitions. [2020-12-09 07:30:45,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:30:45,529 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-12-09 07:30:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:45,530 INFO L225 Difference]: With dead ends: 168 [2020-12-09 07:30:45,530 INFO L226 Difference]: Without dead ends: 145 [2020-12-09 07:30:45,530 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:30:45,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2020-12-09 07:30:45,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 120. [2020-12-09 07:30:45,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-12-09 07:30:45,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 159 transitions. [2020-12-09 07:30:45,532 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 159 transitions. Word has length 36 [2020-12-09 07:30:45,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:45,532 INFO L481 AbstractCegarLoop]: Abstraction has 120 states and 159 transitions. [2020-12-09 07:30:45,532 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:45,532 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 159 transitions. [2020-12-09 07:30:45,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-12-09 07:30:45,532 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:45,532 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:45,733 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 28 mathsat -unsat_core_generation=3 [2020-12-09 07:30:45,734 INFO L429 AbstractCegarLoop]: === Iteration 28 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:45,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:45,735 INFO L82 PathProgramCache]: Analyzing trace with hash -1953916874, now seen corresponding path program 1 times [2020-12-09 07:30:45,736 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:45,736 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1862614706] [2020-12-09 07:30:45,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 29 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 29 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:45,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 07:30:45,821 INFO L263 TraceCheckSpWp]: Trace formula consists of 130 conjuncts, 7 conjunts are in the unsatisfiable core [2020-12-09 07:30:45,821 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 07:30:45,878 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 07:30:45,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 07:30:45,878 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1862614706] [2020-12-09 07:30:45,878 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 07:30:45,878 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 07:30:45,878 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416558100] [2020-12-09 07:30:45,879 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 07:30:45,879 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 07:30:45,879 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 07:30:45,879 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-12-09 07:30:45,879 INFO L87 Difference]: Start difference. First operand 120 states and 159 transitions. Second operand 8 states. [2020-12-09 07:30:46,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 07:30:46,039 INFO L93 Difference]: Finished difference Result 156 states and 195 transitions. [2020-12-09 07:30:46,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 07:30:46,040 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-12-09 07:30:46,040 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 07:30:46,040 INFO L225 Difference]: With dead ends: 156 [2020-12-09 07:30:46,040 INFO L226 Difference]: Without dead ends: 102 [2020-12-09 07:30:46,041 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 07:30:46,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-12-09 07:30:46,041 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 77. [2020-12-09 07:30:46,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-12-09 07:30:46,042 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 96 transitions. [2020-12-09 07:30:46,042 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 96 transitions. Word has length 36 [2020-12-09 07:30:46,042 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 07:30:46,042 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 96 transitions. [2020-12-09 07:30:46,042 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 07:30:46,042 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 96 transitions. [2020-12-09 07:30:46,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-12-09 07:30:46,042 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 07:30:46,042 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 07:30:46,243 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 29 mathsat -unsat_core_generation=3 [2020-12-09 07:30:46,244 INFO L429 AbstractCegarLoop]: === Iteration 29 === [ULTIMATE.startErr14ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr21ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr28ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr17ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr23ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr27ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr15ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr18ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr20ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr22ASSERT_VIOLATIONMEMORY_LEAK]=== [2020-12-09 07:30:46,245 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 07:30:46,245 INFO L82 PathProgramCache]: Analyzing trace with hash 724480386, now seen corresponding path program 1 times [2020-12-09 07:30:46,246 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 07:30:46,246 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754029007] [2020-12-09 07:30:46,247 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_59fe3503-fef9-4cf0-868b-54926cbb7e39/bin/utaipan/mathsat Starting monitored process 30 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 30 with mathsat -unsat_core_generation=3 [2020-12-09 07:30:46,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:30:46,378 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:30:46,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-12-09 07:30:46,414 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-12-09 07:30:46,473 INFO L173 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2020-12-09 07:30:46,473 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-12-09 07:30:46,673 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 30 mathsat -unsat_core_generation=3 [2020-12-09 07:30:46,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 07:30:46 BoogieIcfgContainer [2020-12-09 07:30:46,747 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 07:30:46,747 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 07:30:46,747 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 07:30:46,747 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 07:30:46,748 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 07:30:31" (3/4) ... [2020-12-09 07:30:46,750 INFO L140 WitnessPrinter]: No result that supports witness generation found [2020-12-09 07:30:46,750 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 07:30:46,751 INFO L168 Benchmark]: Toolchain (without parser) took 16633.12 ms. Allocated memory was 65.0 MB in the beginning and 113.2 MB in the end (delta: 48.2 MB). Free memory was 46.1 MB in the beginning and 46.8 MB in the end (delta: -612.1 kB). Peak memory consumption was 47.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,751 INFO L168 Benchmark]: CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 07:30:46,751 INFO L168 Benchmark]: CACSL2BoogieTranslator took 301.64 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 44.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,752 INFO L168 Benchmark]: Boogie Procedure Inliner took 79.82 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 38.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,752 INFO L168 Benchmark]: Boogie Preprocessor took 65.74 ms. Allocated memory is still 65.0 MB. Free memory was 38.3 MB in the beginning and 34.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,752 INFO L168 Benchmark]: RCFGBuilder took 929.38 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 34.3 MB in the beginning and 39.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,753 INFO L168 Benchmark]: TraceAbstraction took 15245.24 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.1 MB in the beginning and 47.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,753 INFO L168 Benchmark]: Witness Printer took 2.93 ms. Allocated memory is still 113.2 MB. Free memory was 47.8 MB in the beginning and 46.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 07:30:46,754 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12 ms. Allocated memory is still 65.0 MB. Free memory is still 48.2 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 301.64 ms. Allocated memory is still 65.0 MB. Free memory was 45.9 MB in the beginning and 44.0 MB in the end (delta: 1.9 MB). Peak memory consumption was 18.9 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 79.82 ms. Allocated memory is still 65.0 MB. Free memory was 44.0 MB in the beginning and 38.3 MB in the end (delta: 5.8 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 65.74 ms. Allocated memory is still 65.0 MB. Free memory was 38.3 MB in the beginning and 34.3 MB in the end (delta: 3.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 929.38 ms. Allocated memory was 65.0 MB in the beginning and 94.4 MB in the end (delta: 29.4 MB). Free memory was 34.3 MB in the beginning and 39.5 MB in the end (delta: -5.2 MB). Peak memory consumption was 26.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 15245.24 ms. Allocated memory was 94.4 MB in the beginning and 113.2 MB in the end (delta: 18.9 MB). Free memory was 72.1 MB in the beginning and 47.8 MB in the end (delta: 24.3 MB). Peak memory consumption was 41.7 MB. Max. memory is 16.1 GB. * Witness Printer took 2.93 ms. Allocated memory is still 113.2 MB. Free memory was 47.8 MB in the beginning and 46.8 MB in the end (delta: 1.1 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 1013]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 1013. Possible FailurePath: [L23] int KernelMode ; [L24] int Executive ; [L25] int DevicePowerState ; [L26] int s ; [L27] int UNLOADED ; [L28] int NP ; [L29] int DC ; [L30] int SKIP1 ; [L31] int SKIP2 ; [L32] int MPR1 ; [L33] int MPR3 ; [L34] int IPC ; [L35] int pended ; [L36] int compFptr ; [L37] int compRegistered ; [L38] int lowerDriverReturn ; [L39] int setEventCalled ; [L40] int customIrp ; [L41] int myStatus ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=0, DevicePowerState=0, Executive=0, IPC=0, KernelMode=0, lowerDriverReturn=0, MPR1=0, MPR3=0, myStatus=0, NP=0, pended=0, s=0, setEventCalled=0, SKIP1=0, SKIP2=0, UNLOADED=0] [L294] int status ; [L295] int irp = __VERIFIER_nondet_int() ; [L296] int pirp ; [L297] int pirp__IoStatus__Status ; [L298] int irp_choice = __VERIFIER_nondet_int() ; [L299] int devobj = __VERIFIER_nondet_int() ; [L300] int __cil_tmp8 ; [L302] KernelMode = 0 [L303] Executive = 0 [L304] DevicePowerState = 1 [L305] s = 0 [L306] UNLOADED = 0 [L307] NP = 0 [L308] DC = 0 [L309] SKIP1 = 0 [L310] SKIP2 = 0 [L311] MPR1 = 0 [L312] MPR3 = 0 [L313] IPC = 0 [L314] pended = 0 [L315] compFptr = 0 [L316] compRegistered = 0 [L317] lowerDriverReturn = 0 [L318] setEventCalled = 0 [L319] customIrp = 0 [L320] myStatus = 0 [L324] status = 0 [L325] pirp = irp [L61] UNLOADED = 0 [L62] NP = 1 [L63] DC = 2 [L64] SKIP1 = 3 [L65] SKIP2 = 4 [L66] MPR1 = 5 [L67] MPR3 = 6 [L68] IPC = 7 [L69] s = UNLOADED [L70] pended = 0 [L71] compFptr = 0 [L72] compRegistered = 0 [L73] lowerDriverReturn = 0 [L74] setEventCalled = 0 [L75] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=0, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L328] COND TRUE status >= 0 [L329] s = NP [L330] customIrp = 0 [L331] setEventCalled = customIrp [L332] lowerDriverReturn = setEventCalled [L333] compRegistered = lowerDriverReturn [L334] pended = compRegistered [L335] pirp__IoStatus__Status = 0 [L336] myStatus = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=0, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L337] COND TRUE irp_choice == 0 [L338] pirp__IoStatus__Status = -1073741637 [L339] myStatus = -1073741637 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L47] s = NP [L48] pended = 0 [L49] compFptr = 0 [L50] compRegistered = 0 [L51] lowerDriverReturn = 0 [L52] setEventCalled = 0 [L53] customIrp = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L345] COND FALSE !(status < 0) [L349] int tmp_ndt_1; [L350] tmp_ndt_1 = __VERIFIER_nondet_int() [L351] COND FALSE !(tmp_ndt_1 == 0) [L354] int tmp_ndt_2; [L355] tmp_ndt_2 = __VERIFIER_nondet_int() [L356] COND FALSE !(tmp_ndt_2 == 1) [L359] int tmp_ndt_3; [L360] tmp_ndt_3 = __VERIFIER_nondet_int() [L361] COND TRUE tmp_ndt_3 == 3 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L80] int devExt ; [L81] int irpStack ; [L82] int status ; [L83] int event = __VERIFIER_nondet_int() ; [L84] int DeviceObject__DeviceExtension = __VERIFIER_nondet_int() ; [L85] int Irp__Tail__Overlay__CurrentStackLocation = __VERIFIER_nondet_int() ; [L86] int irpStack__MinorFunction = __VERIFIER_nondet_int() ; [L87] int devExt__TopOfStack = __VERIFIER_nondet_int() ; [L88] int devExt__Started ; [L89] int devExt__Removed ; [L90] int devExt__SurpriseRemoved ; [L91] int Irp__IoStatus__Status ; [L92] int Irp__IoStatus__Information ; [L93] int Irp__CurrentLocation = __VERIFIER_nondet_int() ; [L94] int irpSp ; [L95] int nextIrpSp ; [L96] int nextIrpSp__Control ; [L97] int irpSp___0 ; [L98] int irpSp__Context ; [L99] int irpSp__Control ; [L100] long __cil_tmp23 ; [L103] status = 0 [L104] devExt = DeviceObject__DeviceExtension [L105] irpStack = Irp__Tail__Overlay__CurrentStackLocation VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L106] COND FALSE !(irpStack__MinorFunction == 0) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L109] COND FALSE !(irpStack__MinorFunction == 23) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L112] COND TRUE irpStack__MinorFunction == 2 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L236] devExt__Removed = 1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=1, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L237] COND TRUE s == NP [L238] s = SKIP1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L245] Irp__CurrentLocation ++ [L246] Irp__Tail__Overlay__CurrentStackLocation ++ [L483] int returnVal2 ; [L484] int compRetStatus ; [L485] int lcontext = __VERIFIER_nondet_int() ; [L486] long long __cil_tmp7 ; VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L489] COND FALSE !(\read(compRegistered)) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L502] int tmp_ndt_6; [L503] tmp_ndt_6 = __VERIFIER_nondet_int() [L504] COND FALSE !(tmp_ndt_6 == 0) [L507] int tmp_ndt_7; [L508] tmp_ndt_7 = __VERIFIER_nondet_int() [L509] COND TRUE tmp_ndt_7 == 1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L518] returnVal2 = -1073741823 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L528] COND FALSE !(s == NP) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L532] COND FALSE !(s == MPR1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=0, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=3, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L541] COND TRUE s == SKIP1 [L542] s = SKIP2 [L543] lowerDriverReturn = returnVal2 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L551] return (returnVal2); VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L248] status = 0 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L290] return (status); VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L388] status = KbFilter_PnP(devobj, pirp) [L412] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L420] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L428] COND TRUE s != UNLOADED VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L429] COND TRUE status != -1 VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L430] COND FALSE !(s != SKIP2) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L440] COND FALSE !(pended == 1) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L447] COND FALSE !(s == DC) VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L452] COND TRUE status != lowerDriverReturn VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] [L1013] reach_error() VAL [compFptr=0, compRegistered=0, customIrp=0, DC=2, DevicePowerState=1, Executive=0, IPC=7, KernelMode=0, lowerDriverReturn=3221225473, MPR1=5, MPR3=6, myStatus=3221225659, NP=1, pended=0, s=4, setEventCalled=0, SKIP1=3, SKIP2=4, UNLOADED=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 331 locations, 31 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.1s, OverallIterations: 29, TraceHistogramMax: 1, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8179 SDtfs, 5693 SDslu, 14424 SDs, 0 SdLazy, 2653 SolverSat, 372 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 836 GetRequests, 704 SyntacticMatches, 0 SemanticMatches, 132 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 1.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=357occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 28 MinimizatonAttempts, 464 StatesRemovedByMinimization, 18 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.5s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 1.1s InterpolantComputationTime, 850 NumberOfCodeBlocks, 850 NumberOfCodeBlocksAsserted, 29 NumberOfCheckSat, 785 ConstructedInterpolants, 0 QuantifiedInterpolants, 79212 SizeOfPredicates, 75 NumberOfNonLiveVariables, 3644 ConjunctsInSsa, 128 ConjunctsInUnsatCore, 28 InterpolantComputations, 28 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...