./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 0f8a17c6 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:01,604 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:01,606 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:01,661 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:01,662 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:01,667 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:01,668 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:01,672 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:01,675 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:01,683 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:01,684 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:01,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:01,686 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:01,690 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:01,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:01,701 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:01,702 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:01,703 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:01,719 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:01,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:01,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:01,730 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:01,734 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:01,735 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:01,738 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:01,738 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:01,739 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:01,740 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:01,740 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:01,741 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:01,741 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:01,742 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:01,743 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:01,744 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:01,745 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:01,745 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:01,746 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:01,746 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:01,746 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:01,747 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:01,748 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:01,748 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-19 15:01:01,775 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:01,775 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:01,776 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:01,776 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:01,776 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:01,777 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:01,777 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:01,777 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-19 15:01:01,777 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:01,777 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:01,777 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-19 15:01:01,778 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-19 15:01:01,778 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:01,778 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-19 15:01:01,778 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-19 15:01:01,778 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-19 15:01:01,779 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:01,779 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:01,780 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:01:01,781 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:01,781 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:01,781 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:01:01,781 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:01,781 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:01:01,782 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:01,782 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:01,782 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:01,782 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:01,782 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:01,783 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:01,784 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_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 [2021-11-19 15:01:02,073 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:02,100 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:02,103 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:02,105 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:02,105 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:02,107 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-19 15:01:02,173 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/fda079fa7/c16d876b023241019f1a13b2a1ae6d1f/FLAGdb473ebad [2021-11-19 15:01:02,920 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:02,921 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-19 15:01:02,950 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/fda079fa7/c16d876b023241019f1a13b2a1ae6d1f/FLAGdb473ebad [2021-11-19 15:01:03,048 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/fda079fa7/c16d876b023241019f1a13b2a1ae6d1f [2021-11-19 15:01:03,053 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:03,055 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:03,059 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:03,060 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:03,063 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:03,064 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:03" (1/1) ... [2021-11-19 15:01:03,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2fb6a777 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:03, skipping insertion in model container [2021-11-19 15:01:03,067 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:03" (1/1) ... [2021-11-19 15:01:03,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:03,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:03,684 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[33021,33034] [2021-11-19 15:01:04,023 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[84583,84596] [2021-11-19 15:01:04,033 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:04,045 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-11-19 15:01:04,045 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4c4ba878 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:04, skipping insertion in model container [2021-11-19 15:01:04,046 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:04,046 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-19 15:01:04,048 INFO L158 Benchmark]: Toolchain (without parser) took 991.94ms. Allocated memory is still 109.1MB. Free memory was 75.7MB in the beginning and 43.5MB in the end (delta: 32.2MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 15:01:04,050 INFO L158 Benchmark]: CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-19 15:01:04,052 INFO L158 Benchmark]: CACSL2BoogieTranslator took 987.04ms. Allocated memory is still 109.1MB. Free memory was 75.7MB in the beginning and 43.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. [2021-11-19 15:01:04,054 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25ms. Allocated memory is still 86.0MB. Free memory was 53.1MB in the beginning and 53.1MB in the end (delta: 69.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 987.04ms. Allocated memory is still 109.1MB. Free memory was 75.7MB in the beginning and 43.7MB in the end (delta: 32.0MB). Peak memory consumption was 33.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 2221]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-0f8a17c [2021-11-19 15:01:06,508 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-19 15:01:06,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-19 15:01:06,555 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-19 15:01:06,556 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-19 15:01:06,561 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-19 15:01:06,563 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-19 15:01:06,567 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-19 15:01:06,571 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-19 15:01:06,580 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-19 15:01:06,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-19 15:01:06,584 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-19 15:01:06,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-19 15:01:06,587 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-19 15:01:06,590 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-19 15:01:06,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-19 15:01:06,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-19 15:01:06,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-19 15:01:06,600 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-19 15:01:06,607 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-19 15:01:06,609 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-19 15:01:06,611 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-19 15:01:06,614 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-19 15:01:06,616 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-19 15:01:06,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-19 15:01:06,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-19 15:01:06,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-19 15:01:06,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-19 15:01:06,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-19 15:01:06,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-19 15:01:06,631 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-19 15:01:06,632 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-19 15:01:06,634 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-19 15:01:06,635 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-19 15:01:06,636 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-19 15:01:06,637 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-19 15:01:06,638 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-19 15:01:06,638 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-19 15:01:06,638 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-19 15:01:06,640 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-19 15:01:06,641 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-19 15:01:06,642 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-19 15:01:06,692 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-19 15:01:06,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-19 15:01:06,694 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-19 15:01:06,694 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-19 15:01:06,695 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-19 15:01:06,695 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-19 15:01:06,695 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-19 15:01:06,695 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-19 15:01:06,696 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-19 15:01:06,696 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-19 15:01:06,698 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-19 15:01:06,699 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-19 15:01:06,699 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-19 15:01:06,699 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-19 15:01:06,700 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-19 15:01:06,700 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-19 15:01:06,700 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-19 15:01:06,700 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-19 15:01:06,700 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-19 15:01:06,701 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-19 15:01:06,701 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-19 15:01:06,701 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-19 15:01:06,702 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-19 15:01:06,702 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-19 15:01:06,702 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-19 15:01:06,702 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-19 15:01:06,703 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-19 15:01:06,703 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:06,703 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-19 15:01:06,703 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-19 15:01:06,704 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-19 15:01:06,704 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-19 15:01:06,704 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:06,704 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-19 15:01:06,705 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-19 15:01:06,705 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-19 15:01:06,706 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_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e2cb3c9a8570b7ee66b623ed5fd2a1832f018e766f6bb5120cee7430951770d6 [2021-11-19 15:01:07,164 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-19 15:01:07,201 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-19 15:01:07,205 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-19 15:01:07,206 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-19 15:01:07,209 INFO L275 PluginConnector]: CDTParser initialized [2021-11-19 15:01:07,210 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/../../sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-19 15:01:07,309 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/a50a6a952/449d739c99154b5eb1cf7f86aae0d61d/FLAG0c112d37c [2021-11-19 15:01:08,233 INFO L306 CDTParser]: Found 1 translation units. [2021-11-19 15:01:08,234 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i [2021-11-19 15:01:08,257 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/a50a6a952/449d739c99154b5eb1cf7f86aae0d61d/FLAG0c112d37c [2021-11-19 15:01:08,744 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/data/a50a6a952/449d739c99154b5eb1cf7f86aae0d61d [2021-11-19 15:01:08,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-19 15:01:08,747 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-19 15:01:08,751 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:08,751 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-19 15:01:08,755 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-19 15:01:08,756 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:08" (1/1) ... [2021-11-19 15:01:08,757 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60f21071 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:08, skipping insertion in model container [2021-11-19 15:01:08,757 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 03:01:08" (1/1) ... [2021-11-19 15:01:08,779 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-19 15:01:08,880 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:09,465 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[33021,33034] [2021-11-19 15:01:09,766 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[84583,84596] [2021-11-19 15:01:09,769 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:09,782 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-19 15:01:09,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-19 15:01:09,840 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[33021,33034] [2021-11-19 15:01:10,006 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[84583,84596] [2021-11-19 15:01:10,013 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:10,021 INFO L203 MainTranslator]: Completed pre-run [2021-11-19 15:01:10,068 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[33021,33034] [2021-11-19 15:01:10,211 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/sv-benchmarks/c/uthash-2.0.2/uthash_SAX_test9-1.i[84583,84596] [2021-11-19 15:01:10,213 INFO L207 PostProcessor]: Analyzing one entry point: main [2021-11-19 15:01:10,264 INFO L208 MainTranslator]: Completed translation [2021-11-19 15:01:10,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10 WrapperNode [2021-11-19 15:01:10,264 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-19 15:01:10,266 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:10,266 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-19 15:01:10,266 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-19 15:01:10,273 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,352 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,508 INFO L137 Inliner]: procedures = 180, calls = 730, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 2864 [2021-11-19 15:01:10,508 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-19 15:01:10,509 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-19 15:01:10,509 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-19 15:01:10,509 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-19 15:01:10,518 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,519 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,537 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,538 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,652 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,681 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,690 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,709 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-19 15:01:10,710 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-19 15:01:10,710 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-19 15:01:10,711 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-19 15:01:10,711 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (1/1) ... [2021-11-19 15:01:10,719 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-19 15:01:10,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:01:10,747 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-19 15:01:10,758 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-19 15:01:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-19 15:01:10,795 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-19 15:01:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-19 15:01:10,796 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-19 15:01:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-19 15:01:10,796 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-19 15:01:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-19 15:01:10,796 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-19 15:01:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-19 15:01:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-19 15:01:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-19 15:01:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-19 15:01:10,797 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-19 15:01:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-19 15:01:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-19 15:01:10,798 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-19 15:01:10,798 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-19 15:01:11,078 INFO L236 CfgBuilder]: Building ICFG [2021-11-19 15:01:11,087 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-19 15:01:20,766 INFO L277 CfgBuilder]: Performing block encoding [2021-11-19 15:01:20,796 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-19 15:01:20,796 INFO L301 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-19 15:01:20,800 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:20 BoogieIcfgContainer [2021-11-19 15:01:20,801 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-19 15:01:20,804 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-19 15:01:20,804 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-19 15:01:20,807 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-19 15:01:20,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 03:01:08" (1/3) ... [2021-11-19 15:01:20,808 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70f7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:20, skipping insertion in model container [2021-11-19 15:01:20,808 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 03:01:10" (2/3) ... [2021-11-19 15:01:20,809 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3f70f7fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 03:01:20, skipping insertion in model container [2021-11-19 15:01:20,809 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 03:01:20" (3/3) ... [2021-11-19 15:01:20,810 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SAX_test9-1.i [2021-11-19 15:01:20,817 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-19 15:01:20,817 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-19 15:01:20,905 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-19 15:01:20,911 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-19 15:01:20,911 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-19 15:01:20,964 INFO L276 IsEmpty]: Start isEmpty. Operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:20,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-19 15:01:20,968 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:20,969 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:20,970 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:20,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:20,975 INFO L85 PathProgramCache]: Analyzing trace with hash -858764483, now seen corresponding path program 1 times [2021-11-19 15:01:20,987 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:20,988 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [197581156] [2021-11-19 15:01:20,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:20,989 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:20,989 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:20,992 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:21,036 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-19 15:01:21,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:21,156 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-19 15:01:21,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:21,219 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:21,219 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:21,243 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:21,244 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:21,245 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [197581156] [2021-11-19 15:01:21,245 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [197581156] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:21,246 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:21,246 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-19 15:01:21,247 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414392544] [2021-11-19 15:01:21,248 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:21,252 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-19 15:01:21,253 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:21,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-19 15:01:21,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:21,299 INFO L87 Difference]: Start difference. First operand has 1167 states, 659 states have (on average 1.922610015174507) internal successors, (1267), 1161 states have internal predecessors, (1267), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) Second operand has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:21,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:21,540 INFO L93 Difference]: Finished difference Result 2332 states and 5044 transitions. [2021-11-19 15:01:21,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-19 15:01:21,543 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-11-19 15:01:21,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:21,599 INFO L225 Difference]: With dead ends: 2332 [2021-11-19 15:01:21,599 INFO L226 Difference]: Without dead ends: 1163 [2021-11-19 15:01:21,617 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-19 15:01:21,625 INFO L933 BasicCegarLoop]: 2213 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 2213 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:21,629 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 2213 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:01:21,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1163 states. [2021-11-19 15:01:22,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1163 to 1163. [2021-11-19 15:01:22,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1163 states, 656 states have (on average 1.833841463414634) internal successors, (1203), 1157 states have internal predecessors, (1203), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:22,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1163 states to 1163 states and 2209 transitions. [2021-11-19 15:01:22,068 INFO L78 Accepts]: Start accepts. Automaton has 1163 states and 2209 transitions. Word has length 9 [2021-11-19 15:01:22,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:22,068 INFO L470 AbstractCegarLoop]: Abstraction has 1163 states and 2209 transitions. [2021-11-19 15:01:22,068 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:22,069 INFO L276 IsEmpty]: Start isEmpty. Operand 1163 states and 2209 transitions. [2021-11-19 15:01:22,070 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 15:01:22,071 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:22,071 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:22,093 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-11-19 15:01:22,283 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:22,284 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:22,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:22,285 INFO L85 PathProgramCache]: Analyzing trace with hash -293931519, now seen corresponding path program 1 times [2021-11-19 15:01:22,286 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:22,286 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [262150530] [2021-11-19 15:01:22,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:22,286 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:22,286 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:22,289 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:22,305 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-19 15:01:22,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:22,511 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:01:22,514 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:22,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:22,708 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:22,947 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:22,947 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:22,947 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [262150530] [2021-11-19 15:01:22,948 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [262150530] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:22,948 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:22,948 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-19 15:01:22,948 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [963889124] [2021-11-19 15:01:22,948 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:22,950 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-19 15:01:22,950 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:22,951 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-19 15:01:22,951 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:01:22,951 INFO L87 Difference]: Start difference. First operand 1163 states and 2209 transitions. Second operand has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:25,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:25,881 INFO L93 Difference]: Finished difference Result 2240 states and 4307 transitions. [2021-11-19 15:01:25,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:25,883 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 15:01:25,883 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:25,897 INFO L225 Difference]: With dead ends: 2240 [2021-11-19 15:01:25,898 INFO L226 Difference]: Without dead ends: 1172 [2021-11-19 15:01:25,904 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:01:25,906 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 2112 mSDsluCounter, 6149 mSDsCounter, 0 mSdLazyCounter, 1062 mSolverCounterSat, 526 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2612 SdHoareTripleChecker+Valid, 8332 SdHoareTripleChecker+Invalid, 1588 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 526 IncrementalHoareTripleChecker+Valid, 1062 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:25,907 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2612 Valid, 8332 Invalid, 1588 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [526 Valid, 1062 Invalid, 0 Unknown, 0 Unchecked, 2.7s Time] [2021-11-19 15:01:25,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1172 states. [2021-11-19 15:01:26,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1172 to 1166. [2021-11-19 15:01:26,300 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1166 states, 659 states have (on average 1.817905918057663) internal successors, (1198), 1160 states have internal predecessors, (1198), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:26,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1166 states to 1166 states and 2204 transitions. [2021-11-19 15:01:26,316 INFO L78 Accepts]: Start accepts. Automaton has 1166 states and 2204 transitions. Word has length 44 [2021-11-19 15:01:26,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:26,317 INFO L470 AbstractCegarLoop]: Abstraction has 1166 states and 2204 transitions. [2021-11-19 15:01:26,317 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 7.0) internal successors, (49), 7 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:26,317 INFO L276 IsEmpty]: Start isEmpty. Operand 1166 states and 2204 transitions. [2021-11-19 15:01:26,320 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 15:01:26,320 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:26,321 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:26,341 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-11-19 15:01:26,535 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:26,535 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:26,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:26,536 INFO L85 PathProgramCache]: Analyzing trace with hash -1193374541, now seen corresponding path program 1 times [2021-11-19 15:01:26,536 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:26,536 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [598012271] [2021-11-19 15:01:26,536 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:26,537 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:26,537 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:26,537 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:26,539 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-19 15:01:26,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:26,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-19 15:01:26,707 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:26,912 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:26,912 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:27,369 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:27,369 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:27,369 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [598012271] [2021-11-19 15:01:27,370 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [598012271] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:27,370 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:27,370 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-19 15:01:27,370 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1714249400] [2021-11-19 15:01:27,370 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:27,371 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-19 15:01:27,371 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:27,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-19 15:01:27,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:01:27,372 INFO L87 Difference]: Start difference. First operand 1166 states and 2204 transitions. Second operand has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:29,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:29,870 INFO L93 Difference]: Finished difference Result 2236 states and 4284 transitions. [2021-11-19 15:01:29,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:29,872 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 15:01:29,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:29,883 INFO L225 Difference]: With dead ends: 2236 [2021-11-19 15:01:29,884 INFO L226 Difference]: Without dead ends: 1165 [2021-11-19 15:01:29,890 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 80 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-19 15:01:29,891 INFO L933 BasicCegarLoop]: 2183 mSDtfsCounter, 2102 mSDsluCounter, 3975 mSDsCounter, 0 mSdLazyCounter, 1055 mSolverCounterSat, 517 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2602 SdHoareTripleChecker+Valid, 6158 SdHoareTripleChecker+Invalid, 1572 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 517 IncrementalHoareTripleChecker+Valid, 1055 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.3s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:29,892 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2602 Valid, 6158 Invalid, 1572 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [517 Valid, 1055 Invalid, 0 Unknown, 0 Unchecked, 2.3s Time] [2021-11-19 15:01:29,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1165 states. [2021-11-19 15:01:30,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1165 to 1160. [2021-11-19 15:01:30,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1160 states, 653 states have (on average 1.8192955589586524) internal successors, (1188), 1154 states have internal predecessors, (1188), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:30,115 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 2194 transitions. [2021-11-19 15:01:30,115 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 2194 transitions. Word has length 44 [2021-11-19 15:01:30,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:30,116 INFO L470 AbstractCegarLoop]: Abstraction has 1160 states and 2194 transitions. [2021-11-19 15:01:30,116 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 8.125) internal successors, (65), 8 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:30,117 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 2194 transitions. [2021-11-19 15:01:30,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-19 15:01:30,118 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:30,119 INFO L514 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, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:30,132 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-11-19 15:01:30,332 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:30,332 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:30,332 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:30,333 INFO L85 PathProgramCache]: Analyzing trace with hash -440422729, now seen corresponding path program 1 times [2021-11-19 15:01:30,333 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:30,333 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131684342] [2021-11-19 15:01:30,333 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:30,334 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:30,334 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:30,334 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:30,336 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-19 15:01:30,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:30,513 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:30,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:30,542 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:30,543 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:30,544 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-19 15:01:30,631 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-19 15:01:30,632 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 36 [2021-11-19 15:01:30,708 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-19 15:01:30,709 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 67 treesize of output 23 [2021-11-19 15:01:30,830 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:30,831 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:31,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:31,003 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:31,003 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131684342] [2021-11-19 15:01:31,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131684342] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:31,003 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:31,003 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-19 15:01:31,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768864206] [2021-11-19 15:01:31,004 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:31,004 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-19 15:01:31,004 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:31,005 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-19 15:01:31,005 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:01:31,005 INFO L87 Difference]: Start difference. First operand 1160 states and 2194 transitions. Second operand has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:34,005 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.06s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:36,494 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:01:45,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:45,934 INFO L93 Difference]: Finished difference Result 4383 states and 8450 transitions. [2021-11-19 15:01:45,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-19 15:01:45,935 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 44 [2021-11-19 15:01:45,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:45,975 INFO L225 Difference]: With dead ends: 4383 [2021-11-19 15:01:45,976 INFO L226 Difference]: Without dead ends: 3317 [2021-11-19 15:01:45,984 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:01:45,985 INFO L933 BasicCegarLoop]: 3165 mSDtfsCounter, 3291 mSDsluCounter, 9013 mSDsCounter, 0 mSdLazyCounter, 1161 mSolverCounterSat, 507 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 13.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4291 SdHoareTripleChecker+Valid, 12178 SdHoareTripleChecker+Invalid, 1669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 507 IncrementalHoareTripleChecker+Valid, 1161 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 14.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:45,986 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4291 Valid, 12178 Invalid, 1669 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [507 Valid, 1161 Invalid, 1 Unknown, 0 Unchecked, 14.4s Time] [2021-11-19 15:01:45,993 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3317 states. [2021-11-19 15:01:46,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3317 to 1162. [2021-11-19 15:01:46,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1162 states, 655 states have (on average 1.816793893129771) internal successors, (1190), 1156 states have internal predecessors, (1190), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:46,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1162 states to 1162 states and 2196 transitions. [2021-11-19 15:01:46,582 INFO L78 Accepts]: Start accepts. Automaton has 1162 states and 2196 transitions. Word has length 44 [2021-11-19 15:01:46,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:46,583 INFO L470 AbstractCegarLoop]: Abstraction has 1162 states and 2196 transitions. [2021-11-19 15:01:46,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 7.833333333333333) internal successors, (47), 6 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:46,583 INFO L276 IsEmpty]: Start isEmpty. Operand 1162 states and 2196 transitions. [2021-11-19 15:01:46,585 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 15:01:46,585 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:46,586 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:46,605 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:46,801 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:46,801 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:46,802 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:46,802 INFO L85 PathProgramCache]: Analyzing trace with hash 1363006627, now seen corresponding path program 1 times [2021-11-19 15:01:46,803 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:46,803 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525455044] [2021-11-19 15:01:46,803 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:46,803 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:46,804 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:46,805 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:46,808 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-19 15:01:47,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:47,059 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:47,064 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:47,315 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:47,315 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:47,600 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:47,600 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:47,600 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525455044] [2021-11-19 15:01:47,600 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525455044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:47,601 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:47,601 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-19 15:01:47,601 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424205231] [2021-11-19 15:01:47,601 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:47,602 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-19 15:01:47,602 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:47,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-19 15:01:47,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:01:47,603 INFO L87 Difference]: Start difference. First operand 1162 states and 2196 transitions. Second operand has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:47,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:47,884 INFO L93 Difference]: Finished difference Result 2329 states and 4400 transitions. [2021-11-19 15:01:47,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:47,885 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 15:01:47,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:47,897 INFO L225 Difference]: With dead ends: 2329 [2021-11-19 15:01:47,897 INFO L226 Difference]: Without dead ends: 1171 [2021-11-19 15:01:47,903 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 191 GetRequests, 187 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:01:47,904 INFO L933 BasicCegarLoop]: 2172 mSDtfsCounter, 1164 mSDsluCounter, 3199 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1667 SdHoareTripleChecker+Valid, 5371 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:47,905 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1667 Valid, 5371 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-19 15:01:47,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1171 states. [2021-11-19 15:01:48,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1171 to 1165. [2021-11-19 15:01:48,205 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1165 states, 658 states have (on average 1.8009118541033435) internal successors, (1185), 1159 states have internal predecessors, (1185), 503 states have call successors, (503), 2 states have call predecessors, (503), 2 states have return successors, (503), 4 states have call predecessors, (503), 503 states have call successors, (503) [2021-11-19 15:01:48,217 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1165 states to 1165 states and 2191 transitions. [2021-11-19 15:01:48,218 INFO L78 Accepts]: Start accepts. Automaton has 1165 states and 2191 transitions. Word has length 96 [2021-11-19 15:01:48,220 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:48,220 INFO L470 AbstractCegarLoop]: Abstraction has 1165 states and 2191 transitions. [2021-11-19 15:01:48,221 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 19.8) internal successors, (99), 5 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:48,221 INFO L276 IsEmpty]: Start isEmpty. Operand 1165 states and 2191 transitions. [2021-11-19 15:01:48,226 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-19 15:01:48,226 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:48,227 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:48,244 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:48,441 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:48,442 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:48,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:48,442 INFO L85 PathProgramCache]: Analyzing trace with hash -725158097, now seen corresponding path program 1 times [2021-11-19 15:01:48,443 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:48,444 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [673351197] [2021-11-19 15:01:48,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:48,444 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:48,444 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:48,448 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:48,489 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-19 15:01:48,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:48,798 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:48,802 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:49,201 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:49,201 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:49,595 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:49,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [673351197] [2021-11-19 15:01:49,596 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [673351197] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:49,596 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1182063915] [2021-11-19 15:01:49,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:49,596 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:49,597 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:01:49,603 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:01:49,610 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-19 15:01:49,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:49,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 196 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:49,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:50,475 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:50,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:51,080 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:51,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1182063915] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:51,080 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:01:51,081 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-11-19 15:01:51,081 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1543115523] [2021-11-19 15:01:51,081 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:51,082 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:01:51,082 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:51,082 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:01:51,082 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:01:51,082 INFO L87 Difference]: Start difference. First operand 1165 states and 2191 transitions. Second operand has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:52,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:52,171 INFO L93 Difference]: Finished difference Result 3450 states and 6521 transitions. [2021-11-19 15:01:52,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:01:52,172 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 96 [2021-11-19 15:01:52,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:52,217 INFO L225 Difference]: With dead ends: 3450 [2021-11-19 15:01:52,218 INFO L226 Difference]: Without dead ends: 2289 [2021-11-19 15:01:52,223 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 380 GetRequests, 377 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-19 15:01:52,225 INFO L933 BasicCegarLoop]: 2715 mSDtfsCounter, 1104 mSDsluCounter, 2150 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1605 SdHoareTripleChecker+Valid, 4865 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:52,226 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1605 Valid, 4865 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2021-11-19 15:01:52,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2289 states. [2021-11-19 15:01:52,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2289 to 2287. [2021-11-19 15:01:52,805 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2287 states, 1279 states have (on average 1.8162627052384674) internal successors, (2323), 2280 states have internal predecessors, (2323), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2021-11-19 15:01:52,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2287 states to 2287 states and 4331 transitions. [2021-11-19 15:01:52,831 INFO L78 Accepts]: Start accepts. Automaton has 2287 states and 4331 transitions. Word has length 96 [2021-11-19 15:01:52,833 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:52,834 INFO L470 AbstractCegarLoop]: Abstraction has 2287 states and 4331 transitions. [2021-11-19 15:01:52,834 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 32.0) internal successors, (96), 3 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:52,834 INFO L276 IsEmpty]: Start isEmpty. Operand 2287 states and 4331 transitions. [2021-11-19 15:01:52,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-19 15:01:52,838 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:52,839 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:52,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:53,065 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:53,260 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:53,261 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:53,261 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:53,261 INFO L85 PathProgramCache]: Analyzing trace with hash -824271743, now seen corresponding path program 1 times [2021-11-19 15:01:53,262 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:53,262 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [439044955] [2021-11-19 15:01:53,263 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:53,263 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:53,263 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:53,265 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:53,313 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-19 15:01:53,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:53,544 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:53,548 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:54,252 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:01:54,252 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:54,964 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:01:54,965 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:54,965 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [439044955] [2021-11-19 15:01:54,965 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [439044955] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:01:54,965 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-19 15:01:54,965 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-19 15:01:54,966 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388906431] [2021-11-19 15:01:54,966 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:54,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-19 15:01:54,967 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:54,967 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-19 15:01:54,968 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:01:54,968 INFO L87 Difference]: Start difference. First operand 2287 states and 4331 transitions. Second operand has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:55,892 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:55,893 INFO L93 Difference]: Finished difference Result 3517 states and 6588 transitions. [2021-11-19 15:01:55,893 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-19 15:01:55,894 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 103 [2021-11-19 15:01:55,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:55,916 INFO L225 Difference]: With dead ends: 3517 [2021-11-19 15:01:55,917 INFO L226 Difference]: Without dead ends: 2365 [2021-11-19 15:01:55,923 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 204 GetRequests, 203 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-19 15:01:55,924 INFO L933 BasicCegarLoop]: 2716 mSDtfsCounter, 1019 mSDsluCounter, 2161 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1521 SdHoareTripleChecker+Valid, 4877 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:55,925 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1521 Valid, 4877 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-19 15:01:55,929 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2365 states. [2021-11-19 15:01:56,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2365 to 2363. [2021-11-19 15:01:56,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2363 states, 1355 states have (on average 1.7734317343173431) internal successors, (2403), 2356 states have internal predecessors, (2403), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 2 states have return successors, (1004), 6 states have call predecessors, (1004), 1004 states have call successors, (1004) [2021-11-19 15:01:56,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2363 states to 2363 states and 4411 transitions. [2021-11-19 15:01:56,569 INFO L78 Accepts]: Start accepts. Automaton has 2363 states and 4411 transitions. Word has length 103 [2021-11-19 15:01:56,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:56,569 INFO L470 AbstractCegarLoop]: Abstraction has 2363 states and 4411 transitions. [2021-11-19 15:01:56,570 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 34.0) internal successors, (102), 3 states have internal predecessors, (102), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-11-19 15:01:56,570 INFO L276 IsEmpty]: Start isEmpty. Operand 2363 states and 4411 transitions. [2021-11-19 15:01:56,571 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-19 15:01:56,571 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:56,572 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:56,595 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:56,785 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:56,785 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:56,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:56,786 INFO L85 PathProgramCache]: Analyzing trace with hash 372571869, now seen corresponding path program 1 times [2021-11-19 15:01:56,787 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:56,788 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2045544371] [2021-11-19 15:01:56,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:56,788 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:56,788 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:56,789 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:56,805 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-19 15:01:57,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:57,105 INFO L263 TraceCheckSpWp]: Trace formula consists of 265 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:57,108 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:57,343 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-19 15:01:57,343 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:57,650 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:01:57,650 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:57,650 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2045544371] [2021-11-19 15:01:57,650 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2045544371] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-19 15:01:57,650 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-19 15:01:57,651 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-19 15:01:57,651 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209503756] [2021-11-19 15:01:57,651 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-19 15:01:57,651 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:01:57,651 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:01:57,652 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:01:57,652 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-19 15:01:57,652 INFO L87 Difference]: Start difference. First operand 2363 states and 4411 transitions. Second operand has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:01:57,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:01:57,935 INFO L93 Difference]: Finished difference Result 4684 states and 8780 transitions. [2021-11-19 15:01:57,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:01:57,936 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) Word has length 111 [2021-11-19 15:01:57,937 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:01:57,959 INFO L225 Difference]: With dead ends: 4684 [2021-11-19 15:01:57,959 INFO L226 Difference]: Without dead ends: 2366 [2021-11-19 15:01:57,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-19 15:01:57,971 INFO L933 BasicCegarLoop]: 2180 mSDtfsCounter, 2 mSDsluCounter, 4356 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 6536 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-19 15:01:57,972 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 6536 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-19 15:01:57,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2366 states. [2021-11-19 15:01:58,423 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2366 to 2366. [2021-11-19 15:01:58,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2366 states, 1357 states have (on average 1.7730287398673545) internal successors, (2406), 2359 states have internal predecessors, (2406), 1004 states have call successors, (1004), 2 states have call predecessors, (1004), 3 states have return successors, (1006), 6 states have call predecessors, (1006), 1004 states have call successors, (1006) [2021-11-19 15:01:58,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2366 states to 2366 states and 4416 transitions. [2021-11-19 15:01:58,446 INFO L78 Accepts]: Start accepts. Automaton has 2366 states and 4416 transitions. Word has length 111 [2021-11-19 15:01:58,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:01:58,446 INFO L470 AbstractCegarLoop]: Abstraction has 2366 states and 4416 transitions. [2021-11-19 15:01:58,447 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.75) internal successors, (107), 4 states have internal predecessors, (107), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-19 15:01:58,447 INFO L276 IsEmpty]: Start isEmpty. Operand 2366 states and 4416 transitions. [2021-11-19 15:01:58,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-19 15:01:58,448 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:01:58,449 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:01:58,468 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-19 15:01:58,665 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:01:58,665 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:01:58,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:01:58,666 INFO L85 PathProgramCache]: Analyzing trace with hash -735525253, now seen corresponding path program 1 times [2021-11-19 15:01:58,666 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:01:58,666 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1190890369] [2021-11-19 15:01:58,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:58,667 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:01:58,667 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:01:58,667 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:01:58,687 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-19 15:01:58,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:58,960 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:01:58,962 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:01:59,186 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:01:59,186 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:01:59,519 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:01:59,520 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:01:59,520 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1190890369] [2021-11-19 15:01:59,523 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1190890369] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:01:59,523 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [144250105] [2021-11-19 15:01:59,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:01:59,524 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:01:59,524 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:01:59,526 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:01:59,550 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-19 15:01:59,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:01:59,767 INFO L263 TraceCheckSpWp]: Trace formula consists of 275 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-19 15:01:59,769 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:00,211 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:02:00,212 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:00,642 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-19 15:02:00,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [144250105] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-19 15:02:00,642 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-19 15:02:00,642 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-19 15:02:00,643 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099401373] [2021-11-19 15:02:00,643 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-19 15:02:00,643 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-19 15:02:00,644 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:00,644 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-19 15:02:00,644 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-19 15:02:00,644 INFO L87 Difference]: Start difference. First operand 2366 states and 4416 transitions. Second operand has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 15:02:03,123 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-19 15:02:06,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:06,420 INFO L93 Difference]: Finished difference Result 3646 states and 6741 transitions. [2021-11-19 15:02:06,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-19 15:02:06,421 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 113 [2021-11-19 15:02:06,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:06,433 INFO L225 Difference]: With dead ends: 3646 [2021-11-19 15:02:06,433 INFO L226 Difference]: Without dead ends: 1325 [2021-11-19 15:02:06,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 450 GetRequests, 441 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:02:06,445 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 2230 mSDsluCounter, 1067 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1003 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 5.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2230 SdHoareTripleChecker+Valid, 3249 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1003 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 5.6s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:06,445 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2230 Valid, 3249 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1003 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 5.6s Time] [2021-11-19 15:02:06,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1325 states. [2021-11-19 15:02:06,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1325 to 1209. [2021-11-19 15:02:06,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1209 states, 701 states have (on average 1.7560627674750358) internal successors, (1231), 1203 states have internal predecessors, (1231), 503 states have call successors, (503), 2 states have call predecessors, (503), 3 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2021-11-19 15:02:06,718 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1209 states to 1209 states and 2238 transitions. [2021-11-19 15:02:06,719 INFO L78 Accepts]: Start accepts. Automaton has 1209 states and 2238 transitions. Word has length 113 [2021-11-19 15:02:06,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:06,721 INFO L470 AbstractCegarLoop]: Abstraction has 1209 states and 2238 transitions. [2021-11-19 15:02:06,722 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 26.25) internal successors, (105), 4 states have internal predecessors, (105), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-19 15:02:06,722 INFO L276 IsEmpty]: Start isEmpty. Operand 1209 states and 2238 transitions. [2021-11-19 15:02:06,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-19 15:02:06,724 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:06,724 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:06,742 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:06,942 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:07,137 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:07,138 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:07,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:07,138 INFO L85 PathProgramCache]: Analyzing trace with hash -629194827, now seen corresponding path program 1 times [2021-11-19 15:02:07,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:07,139 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [914578517] [2021-11-19 15:02:07,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:07,139 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:07,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:07,141 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:07,147 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-19 15:02:07,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:07,473 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:07,476 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:07,725 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:02:07,725 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:08,064 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:02:08,064 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:08,064 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [914578517] [2021-11-19 15:02:08,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [914578517] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:08,065 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1017294489] [2021-11-19 15:02:08,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:08,065 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:08,065 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:08,070 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:08,089 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-19 15:02:08,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:08,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:08,419 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:08,639 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-19 15:02:08,639 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:08,884 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:02:08,884 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1017294489] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:08,884 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1714620842] [2021-11-19 15:02:08,884 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-19 15:02:08,884 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:02:08,885 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:02:08,886 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:02:08,886 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-19 15:02:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-19 15:02:09,104 INFO L263 TraceCheckSpWp]: Trace formula consists of 290 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-19 15:02:09,106 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:09,316 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:02:09,316 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:09,598 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-19 15:02:09,598 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1714620842] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:09,598 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:02:09,598 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-19 15:02:09,598 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1832607694] [2021-11-19 15:02:09,598 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:02:09,599 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-19 15:02:09,600 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:09,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-19 15:02:09,600 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-19 15:02:09,600 INFO L87 Difference]: Start difference. First operand 1209 states and 2238 transitions. Second operand has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:02:10,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:10,110 INFO L93 Difference]: Finished difference Result 2385 states and 4449 transitions. [2021-11-19 15:02:10,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-19 15:02:10,112 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 120 [2021-11-19 15:02:10,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:10,123 INFO L225 Difference]: With dead ends: 2385 [2021-11-19 15:02:10,123 INFO L226 Difference]: Without dead ends: 1224 [2021-11-19 15:02:10,129 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-19 15:02:10,130 INFO L933 BasicCegarLoop]: 2179 mSDtfsCounter, 57 mSDsluCounter, 8698 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 57 SdHoareTripleChecker+Valid, 10877 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:10,131 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [57 Valid, 10877 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-19 15:02:10,134 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1224 states. [2021-11-19 15:02:10,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1224 to 1220. [2021-11-19 15:02:10,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1220 states, 711 states have (on average 1.7566807313642756) internal successors, (1249), 1213 states have internal predecessors, (1249), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2021-11-19 15:02:10,411 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1220 states to 1220 states and 2256 transitions. [2021-11-19 15:02:10,412 INFO L78 Accepts]: Start accepts. Automaton has 1220 states and 2256 transitions. Word has length 120 [2021-11-19 15:02:10,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:10,412 INFO L470 AbstractCegarLoop]: Abstraction has 1220 states and 2256 transitions. [2021-11-19 15:02:10,412 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 11.818181818181818) internal successors, (130), 11 states have internal predecessors, (130), 2 states have call successors, (4), 2 states have call predecessors, (4), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-19 15:02:10,413 INFO L276 IsEmpty]: Start isEmpty. Operand 1220 states and 2256 transitions. [2021-11-19 15:02:10,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-19 15:02:10,414 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:10,415 INFO L514 BasicCegarLoop]: trace histogram [8, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:10,460 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:10,637 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:10,843 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:11,029 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 [2021-11-19 15:02:11,030 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:11,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:11,030 INFO L85 PathProgramCache]: Analyzing trace with hash 159541395, now seen corresponding path program 2 times [2021-11-19 15:02:11,031 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:11,031 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1573392063] [2021-11-19 15:02:11,031 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:02:11,031 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:11,031 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:11,032 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:11,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-19 15:02:11,359 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:02:11,359 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:11,385 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:11,388 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:11,634 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:02:11,634 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:12,061 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:02:12,061 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:12,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1573392063] [2021-11-19 15:02:12,061 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1573392063] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:12,061 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1910023664] [2021-11-19 15:02:12,061 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:02:12,061 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:12,061 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:12,062 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:12,064 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-19 15:02:12,622 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:02:12,622 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:12,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-19 15:02:12,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:12,848 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:02:12,849 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:13,118 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:02:13,118 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1910023664] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:13,118 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2120768040] [2021-11-19 15:02:13,118 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-19 15:02:13,119 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:02:13,119 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:02:13,122 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:02:13,122 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-19 15:02:13,389 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-19 15:02:13,389 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:13,407 INFO L263 TraceCheckSpWp]: Trace formula consists of 320 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-19 15:02:13,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:13,654 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-19 15:02:13,655 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:14,108 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-19 15:02:14,109 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2120768040] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:14,109 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-19 15:02:14,109 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-19 15:02:14,110 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426118707] [2021-11-19 15:02:14,110 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-19 15:02:14,110 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-19 15:02:14,110 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-19 15:02:14,111 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-19 15:02:14,111 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-19 15:02:14,111 INFO L87 Difference]: Start difference. First operand 1220 states and 2256 transitions. Second operand has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:02:15,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-19 15:02:15,267 INFO L93 Difference]: Finished difference Result 2403 states and 4474 transitions. [2021-11-19 15:02:15,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-19 15:02:15,268 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) Word has length 126 [2021-11-19 15:02:15,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-19 15:02:15,280 INFO L225 Difference]: With dead ends: 2403 [2021-11-19 15:02:15,280 INFO L226 Difference]: Without dead ends: 1233 [2021-11-19 15:02:15,286 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-19 15:02:15,287 INFO L933 BasicCegarLoop]: 2182 mSDtfsCounter, 71 mSDsluCounter, 15252 mSDsCounter, 0 mSdLazyCounter, 224 mSolverCounterSat, 54 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 17434 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 54 IncrementalHoareTripleChecker+Valid, 224 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-19 15:02:15,287 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 17434 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [54 Valid, 224 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-19 15:02:15,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1233 states. [2021-11-19 15:02:15,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1233 to 1227. [2021-11-19 15:02:15,529 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1227 states, 718 states have (on average 1.7493036211699164) internal successors, (1256), 1220 states have internal predecessors, (1256), 503 states have call successors, (503), 3 states have call predecessors, (503), 4 states have return successors, (504), 4 states have call predecessors, (504), 503 states have call successors, (504) [2021-11-19 15:02:15,535 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1227 states to 1227 states and 2263 transitions. [2021-11-19 15:02:15,537 INFO L78 Accepts]: Start accepts. Automaton has 1227 states and 2263 transitions. Word has length 126 [2021-11-19 15:02:15,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-19 15:02:15,537 INFO L470 AbstractCegarLoop]: Abstraction has 1227 states and 2263 transitions. [2021-11-19 15:02:15,537 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 20 states have (on average 6.9) internal successors, (138), 20 states have internal predecessors, (138), 2 states have call successors, (3), 2 states have call predecessors, (3), 5 states have return successors, (5), 1 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-19 15:02:15,538 INFO L276 IsEmpty]: Start isEmpty. Operand 1227 states and 2263 transitions. [2021-11-19 15:02:15,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-19 15:02:15,539 INFO L506 BasicCegarLoop]: Found error trace [2021-11-19 15:02:15,540 INFO L514 BasicCegarLoop]: trace histogram [15, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-19 15:02:15,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:15,764 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (17)] Ended with exit code 0 [2021-11-19 15:02:15,987 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2021-11-19 15:02:16,158 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3,17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:02:16,158 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-19 15:02:16,158 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-19 15:02:16,159 INFO L85 PathProgramCache]: Analyzing trace with hash -675467253, now seen corresponding path program 3 times [2021-11-19 15:02:16,159 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-19 15:02:16,159 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [389607307] [2021-11-19 15:02:16,159 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:02:16,159 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-19 15:02:16,159 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat [2021-11-19 15:02:16,161 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-19 15:02:16,162 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-19 15:02:18,830 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 15:02:18,830 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:02:18,883 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:02:18,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:02:19,179 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 15:02:19,180 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:02:19,759 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 15:02:19,759 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-19 15:02:19,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [389607307] [2021-11-19 15:02:19,759 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [389607307] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:02:19,759 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [79714336] [2021-11-19 15:02:19,759 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:02:19,759 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-19 15:02:19,759 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 [2021-11-19 15:02:19,760 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-19 15:02:19,765 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-19 15:03:16,776 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-19 15:03:16,776 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-19 15:03:16,822 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-19 15:03:16,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-19 15:03:17,053 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 15:03:17,053 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-19 15:03:17,386 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-19 15:03:17,386 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [79714336] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-19 15:03:17,387 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2005736215] [2021-11-19 15:03:17,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-19 15:03:17,387 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-19 15:03:17,387 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 [2021-11-19 15:03:17,388 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-19 15:03:17,390 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_60eb528d-3df3-4b04-a6f0-77f0aebf53a2/bin/utaipan-UbGMyvGFUs/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process