./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 63182f13 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF --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 c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:29,569 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:29,572 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:29,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:29,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:29,633 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:29,635 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:29,639 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:29,642 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:29,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:29,649 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:29,652 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:29,652 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:29,655 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:29,657 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:29,665 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:29,667 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:29,669 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:29,671 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:29,679 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:29,681 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:29,683 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:29,687 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:29,688 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:29,697 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:29,698 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:29,698 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:29,700 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:29,701 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:29,702 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:29,703 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:29,704 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:29,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:29,708 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:29,710 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:29,710 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:29,711 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:29,711 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:29,712 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:29,713 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:29,714 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:29,715 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-12 23:09:29,760 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:29,760 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:29,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:29,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:29,762 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:29,763 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:29,763 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:29,764 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-12 23:09:29,764 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:29,764 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:29,771 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-12 23:09:29,771 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-12 23:09:29,772 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:29,772 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-12 23:09:29,772 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-12 23:09:29,772 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-12 23:09:29,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:29,774 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:09:29,774 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-12 23:09:29,774 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:09:29,774 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:29,775 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:29,775 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:29,775 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:29,775 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:29,775 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:09:29,776 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:29,776 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:29,776 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:29,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:29,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:29,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:29,779 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:29,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:29,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:29,780 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-12 23:09:29,780 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-12 23:09:29,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:29,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:29,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:29,781 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e [2021-11-12 23:09:30,040 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:30,074 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:30,077 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:30,078 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:30,080 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:30,082 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2021-11-12 23:09:30,169 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/479a69811/e8e8f809c0274d879f08b7f7225369bc/FLAG99f6f3b90 [2021-11-12 23:09:30,782 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:30,783 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2021-11-12 23:09:30,811 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/479a69811/e8e8f809c0274d879f08b7f7225369bc/FLAG99f6f3b90 [2021-11-12 23:09:31,044 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/479a69811/e8e8f809c0274d879f08b7f7225369bc [2021-11-12 23:09:31,046 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:31,048 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:31,062 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:31,062 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:31,065 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:31,066 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:31" (1/1) ... [2021-11-12 23:09:31,067 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@afc0c53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:31, skipping insertion in model container [2021-11-12 23:09:31,068 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:31" (1/1) ... [2021-11-12 23:09:31,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:31,139 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:31,665 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2021-11-12 23:09:31,817 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2021-11-12 23:09:31,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:31,838 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) [2021-11-12 23:09:31,844 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@6573c43d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:31, skipping insertion in model container [2021-11-12 23:09:31,844 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:31,845 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-12 23:09:31,847 INFO L158 Benchmark]: Toolchain (without parser) took 797.80ms. Allocated memory is still 109.1MB. Free memory was 71.3MB in the beginning and 76.5MB in the end (delta: -5.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:31,848 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 80.9MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-12 23:09:31,849 INFO L158 Benchmark]: CACSL2BoogieTranslator took 782.87ms. Allocated memory is still 109.1MB. Free memory was 71.2MB in the beginning and 76.5MB in the end (delta: -5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-11-12 23:09:31,853 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 109.1MB. Free memory was 80.9MB in the beginning and 80.9MB in the end (delta: 27.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 782.87ms. Allocated memory is still 109.1MB. Free memory was 71.2MB in the beginning and 76.5MB in the end (delta: -5.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 815]: 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF --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 c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e --- Real Ultimate output --- This is Ultimate 0.2.1-dev-63182f1 [2021-11-12 23:09:34,141 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-12 23:09:34,145 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-12 23:09:34,192 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-12 23:09:34,193 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-12 23:09:34,198 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-12 23:09:34,200 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-12 23:09:34,204 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-12 23:09:34,208 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-12 23:09:34,216 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-12 23:09:34,217 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-12 23:09:34,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-12 23:09:34,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-12 23:09:34,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-12 23:09:34,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-12 23:09:34,232 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-12 23:09:34,234 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-12 23:09:34,235 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-12 23:09:34,237 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-12 23:09:34,247 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-12 23:09:34,249 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-12 23:09:34,251 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-12 23:09:34,254 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-12 23:09:34,256 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-12 23:09:34,265 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-12 23:09:34,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-12 23:09:34,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-12 23:09:34,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-12 23:09:34,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-12 23:09:34,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-12 23:09:34,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-12 23:09:34,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-12 23:09:34,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-12 23:09:34,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-12 23:09:34,277 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-12 23:09:34,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-12 23:09:34,278 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-12 23:09:34,278 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-12 23:09:34,278 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-12 23:09:34,280 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-12 23:09:34,281 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-12 23:09:34,286 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-12 23:09:34,352 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-12 23:09:34,353 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-12 23:09:34,354 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-12 23:09:34,354 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-12 23:09:34,355 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-12 23:09:34,355 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-12 23:09:34,355 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-12 23:09:34,355 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-12 23:09:34,356 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-12 23:09:34,356 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-12 23:09:34,358 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-12 23:09:34,359 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-12 23:09:34,359 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-12 23:09:34,359 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-12 23:09:34,359 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-12 23:09:34,359 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-12 23:09:34,360 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-12 23:09:34,360 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-12 23:09:34,360 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-12 23:09:34,360 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-12 23:09:34,361 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-12 23:09:34,361 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-12 23:09:34,361 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-12 23:09:34,361 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-12 23:09:34,361 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-12 23:09:34,362 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-12 23:09:34,362 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-12 23:09:34,362 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:34,362 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-12 23:09:34,363 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-12 23:09:34,363 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-12 23:09:34,363 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-12 23:09:34,363 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-12 23:09:34,364 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-12 23:09:34,364 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-12 23:09:34,364 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-12 23:09:34,365 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c2bc72e0ba847f7c079e01dc4ce9f95afa555e9d2ef7b4bcdf5e1274db86053e [2021-11-12 23:09:34,814 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-12 23:09:34,842 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-12 23:09:34,845 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-12 23:09:34,846 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-12 23:09:34,847 INFO L275 PluginConnector]: CDTParser initialized [2021-11-12 23:09:34,849 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/../../sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2021-11-12 23:09:34,914 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/02d57db37/0d49245a02114a21a3ca9992ccfad061/FLAG6d9b50219 [2021-11-12 23:09:35,649 INFO L306 CDTParser]: Found 1 translation units. [2021-11-12 23:09:35,649 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i [2021-11-12 23:09:35,665 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/02d57db37/0d49245a02114a21a3ca9992ccfad061/FLAG6d9b50219 [2021-11-12 23:09:35,837 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/data/02d57db37/0d49245a02114a21a3ca9992ccfad061 [2021-11-12 23:09:35,840 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-12 23:09:35,841 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-12 23:09:35,843 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:35,843 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-12 23:09:35,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-12 23:09:35,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:35" (1/1) ... [2021-11-12 23:09:35,863 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64e98463 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:35, skipping insertion in model container [2021-11-12 23:09:35,863 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.11 11:09:35" (1/1) ... [2021-11-12 23:09:35,870 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-12 23:09:35,942 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:36,497 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2021-11-12 23:09:36,677 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2021-11-12 23:09:36,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:36,705 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-12 23:09:36,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-12 23:09:36,760 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2021-11-12 23:09:36,849 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2021-11-12 23:09:36,851 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:36,856 INFO L203 MainTranslator]: Completed pre-run [2021-11-12 23:09:36,881 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[37019,37032] [2021-11-12 23:09:36,946 WARN L228 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_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/sv-benchmarks/c/uthash-2.0.2/uthash_FNV_test2-1.i[47352,47365] [2021-11-12 23:09:36,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-12 23:09:37,012 INFO L208 MainTranslator]: Completed translation [2021-11-12 23:09:37,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37 WrapperNode [2021-11-12 23:09:37,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-12 23:09:37,014 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:37,014 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-12 23:09:37,015 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-12 23:09:37,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,092 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,197 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-12 23:09:37,197 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-12 23:09:37,198 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-12 23:09:37,198 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-12 23:09:37,213 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,213 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,229 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,299 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,319 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,342 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,363 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-12 23:09:37,364 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-12 23:09:37,364 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-12 23:09:37,365 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-12 23:09:37,365 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (1/1) ... [2021-11-12 23:09:37,372 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-12 23:09:37,384 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:09:37,399 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-12 23:09:37,428 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-12 23:09:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-12 23:09:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-12 23:09:37,451 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-11-12 23:09:37,451 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-12 23:09:37,452 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2021-11-12 23:09:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2021-11-12 23:09:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-12 23:09:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-12 23:09:37,453 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-12 23:09:37,453 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-12 23:09:44,213 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-12 23:09:44,213 INFO L299 CfgBuilder]: Removed 54 assume(true) statements. [2021-11-12 23:09:44,215 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:44 BoogieIcfgContainer [2021-11-12 23:09:44,215 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-12 23:09:44,217 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-12 23:09:44,217 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-12 23:09:44,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-12 23:09:44,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.11 11:09:35" (1/3) ... [2021-11-12 23:09:44,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387600e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:44, skipping insertion in model container [2021-11-12 23:09:44,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.11 11:09:37" (2/3) ... [2021-11-12 23:09:44,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@387600e6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.11 11:09:44, skipping insertion in model container [2021-11-12 23:09:44,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.11 11:09:44" (3/3) ... [2021-11-12 23:09:44,223 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_FNV_test2-1.i [2021-11-12 23:09:44,229 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-12 23:09:44,229 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-12 23:09:44,279 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-12 23:09:44,291 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 [2021-11-12 23:09:44,291 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-12 23:09:44,313 INFO L276 IsEmpty]: Start isEmpty. Operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:44,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-12 23:09:44,317 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:44,318 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-12 23:09:44,319 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:44,324 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:44,324 INFO L85 PathProgramCache]: Analyzing trace with hash -858859523, now seen corresponding path program 1 times [2021-11-12 23:09:44,336 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:44,336 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [153975352] [2021-11-12 23:09:44,337 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:44,337 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:44,338 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:44,341 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:44,347 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-12 23:09:44,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:44,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-12 23:09:44,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:44,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:44,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:44,582 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:44,583 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:44,583 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [153975352] [2021-11-12 23:09:44,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [153975352] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:44,584 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:44,584 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-12 23:09:44,586 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816429936] [2021-11-12 23:09:44,587 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:44,591 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-12 23:09:44,591 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:44,615 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-12 23:09:44,616 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-12 23:09:44,619 INFO L87 Difference]: Start difference. First operand has 177 states, 164 states have (on average 1.6890243902439024) internal successors, (277), 171 states have internal predecessors, (277), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) 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) [2021-11-12 23:09:44,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:44,687 INFO L93 Difference]: Finished difference Result 352 states and 589 transitions. [2021-11-12 23:09:44,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-12 23:09:44,689 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 [2021-11-12 23:09:44,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:44,700 INFO L225 Difference]: With dead ends: 352 [2021-11-12 23:09:44,701 INFO L226 Difference]: Without dead ends: 173 [2021-11-12 23:09:44,705 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 [2021-11-12 23:09:44,709 INFO L933 BasicCegarLoop]: 233 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.00ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.95ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.00ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:44,710 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 2.95ms Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.00ms Time] [2021-11-12 23:09:44,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 173 states. [2021-11-12 23:09:44,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 173 to 173. [2021-11-12 23:09:44,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 173 states, 161 states have (on average 1.3229813664596273) internal successors, (213), 167 states have internal predecessors, (213), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:44,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 229 transitions. [2021-11-12 23:09:44,775 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 229 transitions. Word has length 9 [2021-11-12 23:09:44,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:44,776 INFO L470 AbstractCegarLoop]: Abstraction has 173 states and 229 transitions. [2021-11-12 23:09:44,776 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) [2021-11-12 23:09:44,776 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 229 transitions. [2021-11-12 23:09:44,779 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:09:44,779 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:44,779 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] [2021-11-12 23:09:44,796 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:44,995 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:44,995 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:44,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:44,996 INFO L85 PathProgramCache]: Analyzing trace with hash -294026559, now seen corresponding path program 1 times [2021-11-12 23:09:44,997 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:44,998 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1347979852] [2021-11-12 23:09:44,998 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:44,998 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:44,998 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:45,002 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:45,013 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-12 23:09:45,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:45,180 INFO L263 TraceCheckSpWp]: Trace formula consists of 94 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:09:45,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:45,384 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:45,384 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:45,625 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:45,626 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:45,627 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1347979852] [2021-11-12 23:09:45,634 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1347979852] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:45,634 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:45,635 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-11-12 23:09:45,635 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123164568] [2021-11-12 23:09:45,636 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:45,639 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-12 23:09:45,639 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:45,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-12 23:09:45,642 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:09:45,646 INFO L87 Difference]: Start difference. First operand 173 states and 229 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) [2021-11-12 23:09:45,945 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:45,945 INFO L93 Difference]: Finished difference Result 260 states and 347 transitions. [2021-11-12 23:09:45,945 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:45,946 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 [2021-11-12 23:09:45,946 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:45,956 INFO L225 Difference]: With dead ends: 260 [2021-11-12 23:09:45,956 INFO L226 Difference]: Without dead ends: 182 [2021-11-12 23:09:45,958 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 [2021-11-12 23:09:45,959 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 70 mSDsluCounter, 840 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 25 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 174.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 1043 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 12.22ms SdHoareTripleChecker+Time, 25 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:45,960 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [75 Valid, 1043 Invalid, 98 Unknown, 0 Unchecked, 12.22ms Time], IncrementalHoareTripleChecker [25 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 253.80ms Time] [2021-11-12 23:09:45,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 182 states. [2021-11-12 23:09:45,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 182 to 176. [2021-11-12 23:09:45,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 164 states have (on average 1.2682926829268293) internal successors, (208), 170 states have internal predecessors, (208), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:46,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 224 transitions. [2021-11-12 23:09:46,001 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 224 transitions. Word has length 44 [2021-11-12 23:09:46,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:46,002 INFO L470 AbstractCegarLoop]: Abstraction has 176 states and 224 transitions. [2021-11-12 23:09:46,002 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) [2021-11-12 23:09:46,002 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 224 transitions. [2021-11-12 23:09:46,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:09:46,004 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:46,004 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] [2021-11-12 23:09:46,022 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:46,217 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:46,218 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:46,218 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:46,219 INFO L85 PathProgramCache]: Analyzing trace with hash -1193469581, now seen corresponding path program 1 times [2021-11-12 23:09:46,219 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:46,219 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1518614207] [2021-11-12 23:09:46,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:46,220 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:46,220 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:46,221 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:46,232 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-12 23:09:46,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:46,423 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-12 23:09:46,426 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:46,638 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:46,638 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:47,067 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:47,067 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:47,068 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1518614207] [2021-11-12 23:09:47,068 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1518614207] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:47,068 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:47,068 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 6] imperfect sequences [] total 8 [2021-11-12 23:09:47,068 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287648700] [2021-11-12 23:09:47,069 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:47,069 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-12 23:09:47,069 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:47,070 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-12 23:09:47,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-12 23:09:47,070 INFO L87 Difference]: Start difference. First operand 176 states and 224 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) [2021-11-12 23:09:47,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:47,223 INFO L93 Difference]: Finished difference Result 256 states and 324 transitions. [2021-11-12 23:09:47,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:47,224 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 [2021-11-12 23:09:47,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:47,225 INFO L225 Difference]: With dead ends: 256 [2021-11-12 23:09:47,225 INFO L226 Difference]: Without dead ends: 175 [2021-11-12 23:09:47,226 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 [2021-11-12 23:09:47,227 INFO L933 BasicCegarLoop]: 203 mSDtfsCounter, 121 mSDsluCounter, 510 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.94ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 126 SdHoareTripleChecker+Valid, 713 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.41ms SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 134.78ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:47,228 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [126 Valid, 713 Invalid, 85 Unknown, 0 Unchecked, 3.41ms Time], IncrementalHoareTripleChecker [20 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 134.78ms Time] [2021-11-12 23:09:47,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2021-11-12 23:09:47,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 170. [2021-11-12 23:09:47,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 170 states, 158 states have (on average 1.2531645569620253) internal successors, (198), 164 states have internal predecessors, (198), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:47,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 170 states to 170 states and 214 transitions. [2021-11-12 23:09:47,241 INFO L78 Accepts]: Start accepts. Automaton has 170 states and 214 transitions. Word has length 44 [2021-11-12 23:09:47,242 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:47,242 INFO L470 AbstractCegarLoop]: Abstraction has 170 states and 214 transitions. [2021-11-12 23:09:47,242 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) [2021-11-12 23:09:47,243 INFO L276 IsEmpty]: Start isEmpty. Operand 170 states and 214 transitions. [2021-11-12 23:09:47,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-12 23:09:47,244 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:47,245 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] [2021-11-12 23:09:47,259 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:47,454 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:47,455 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:47,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:47,455 INFO L85 PathProgramCache]: Analyzing trace with hash -440517769, now seen corresponding path program 1 times [2021-11-12 23:09:47,456 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:47,456 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1217622965] [2021-11-12 23:09:47,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:47,456 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:47,457 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:47,471 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:47,472 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-12 23:09:47,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:47,662 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:09:47,665 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:47,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:09:47,705 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:09:47,706 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-12 23:09:47,787 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-12 23:09:47,787 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 [2021-11-12 23:09:47,853 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-12 23:09:47,854 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 [2021-11-12 23:09:47,974 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:47,974 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:48,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:48,192 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:48,192 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1217622965] [2021-11-12 23:09:48,192 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1217622965] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:48,192 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:48,193 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-12 23:09:48,193 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430143168] [2021-11-12 23:09:48,193 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:48,193 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-12 23:09:48,194 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:48,194 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-12 23:09:48,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:09:48,195 INFO L87 Difference]: Start difference. First operand 170 states and 214 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) [2021-11-12 23:09:52,584 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:09:55,118 WARN L515 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.52s for a HTC check with result INVALID. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers [] [2021-11-12 23:09:55,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:55,291 INFO L93 Difference]: Finished difference Result 423 states and 530 transitions. [2021-11-12 23:09:55,291 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-12 23:09:55,292 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 [2021-11-12 23:09:55,292 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:55,295 INFO L225 Difference]: With dead ends: 423 [2021-11-12 23:09:55,295 INFO L226 Difference]: Without dead ends: 347 [2021-11-12 23:09:55,296 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 [2021-11-12 23:09:55,298 INFO L933 BasicCegarLoop]: 195 mSDtfsCounter, 321 mSDsluCounter, 598 mSDsCounter, 0 mSdLazyCounter, 171 mSolverCounterSat, 12 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6815.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 331 SdHoareTripleChecker+Valid, 793 SdHoareTripleChecker+Invalid, 184 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.95ms SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 171 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 7026.23ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:55,298 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [331 Valid, 793 Invalid, 184 Unknown, 0 Unchecked, 6.95ms Time], IncrementalHoareTripleChecker [12 Valid, 171 Invalid, 1 Unknown, 0 Unchecked, 7026.23ms Time] [2021-11-12 23:09:55,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 347 states. [2021-11-12 23:09:55,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 347 to 172. [2021-11-12 23:09:55,329 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 160 states have (on average 1.25) internal successors, (200), 166 states have internal predecessors, (200), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 216 transitions. [2021-11-12 23:09:55,331 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 216 transitions. Word has length 44 [2021-11-12 23:09:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:55,331 INFO L470 AbstractCegarLoop]: Abstraction has 172 states and 216 transitions. [2021-11-12 23:09:55,332 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) [2021-11-12 23:09:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 216 transitions. [2021-11-12 23:09:55,337 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 23:09:55,337 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:55,337 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] [2021-11-12 23:09:55,355 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:55,554 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,554 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:55,555 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:55,555 INFO L85 PathProgramCache]: Analyzing trace with hash 1362911587, now seen corresponding path program 1 times [2021-11-12 23:09:55,556 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:55,556 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1589622724] [2021-11-12 23:09:55,556 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:55,557 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:55,557 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:55,561 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:55,563 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-12 23:09:55,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:55,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 207 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:09:55,841 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:56,092 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:56,370 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:56,371 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:56,371 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1589622724] [2021-11-12 23:09:56,371 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1589622724] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:56,371 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:09:56,371 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-12 23:09:56,372 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1102363479] [2021-11-12 23:09:56,372 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:56,372 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-12 23:09:56,373 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:56,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-12 23:09:56,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:56,374 INFO L87 Difference]: Start difference. First operand 172 states and 216 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) [2021-11-12 23:09:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:56,516 INFO L93 Difference]: Finished difference Result 349 states and 440 transitions. [2021-11-12 23:09:56,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:09:56,517 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 [2021-11-12 23:09:56,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:56,519 INFO L225 Difference]: With dead ends: 349 [2021-11-12 23:09:56,519 INFO L226 Difference]: Without dead ends: 181 [2021-11-12 23:09:56,519 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 [2021-11-12 23:09:56,520 INFO L933 BasicCegarLoop]: 192 mSDtfsCounter, 174 mSDsluCounter, 229 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 30 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 97.93ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 182 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.89ms SdHoareTripleChecker+Time, 30 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 114.86ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:56,521 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [182 Valid, 421 Invalid, 69 Unknown, 0 Unchecked, 2.89ms Time], IncrementalHoareTripleChecker [30 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 114.86ms Time] [2021-11-12 23:09:56,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 181 states. [2021-11-12 23:09:56,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 181 to 175. [2021-11-12 23:09:56,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 163 states have (on average 1.196319018404908) internal successors, (195), 169 states have internal predecessors, (195), 8 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (8), 4 states have call predecessors, (8), 8 states have call successors, (8) [2021-11-12 23:09:56,548 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 211 transitions. [2021-11-12 23:09:56,549 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 211 transitions. Word has length 96 [2021-11-12 23:09:56,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:56,551 INFO L470 AbstractCegarLoop]: Abstraction has 175 states and 211 transitions. [2021-11-12 23:09:56,552 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) [2021-11-12 23:09:56,552 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 211 transitions. [2021-11-12 23:09:56,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2021-11-12 23:09:56,564 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:56,564 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] [2021-11-12 23:09:56,578 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-12 23:09:56,764 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:09:56,765 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:09:56,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:09:56,766 INFO L85 PathProgramCache]: Analyzing trace with hash -725253137, now seen corresponding path program 1 times [2021-11-12 23:09:56,767 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:09:56,767 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1528059463] [2021-11-12 23:09:56,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:56,768 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:09:56,768 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:09:56,769 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:09:56,819 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-12 23:09:57,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:57,070 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:09:57,074 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:57,468 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:57,468 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:57,863 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:57,864 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:09:57,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1528059463] [2021-11-12 23:09:57,864 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1528059463] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:09:57,864 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1818344835] [2021-11-12 23:09:57,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:09:57,865 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:09:57,865 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:09:57,878 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:09:57,893 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Waiting until timeout for monitored process [2021-11-12 23:09:58,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:09:58,141 INFO L263 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:09:58,144 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:09:58,742 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:58,742 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:09:59,297 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:09:59,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1818344835] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:09:59,298 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:09:59,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [4, 4] total 5 [2021-11-12 23:09:59,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [42029395] [2021-11-12 23:09:59,299 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:09:59,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:09:59,300 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:09:59,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:09:59,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-12 23:09:59,301 INFO L87 Difference]: Start difference. First operand 175 states and 211 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) [2021-11-12 23:09:59,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:09:59,907 INFO L93 Difference]: Finished difference Result 480 states and 581 transitions. [2021-11-12 23:09:59,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:09:59,909 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 [2021-11-12 23:09:59,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:09:59,913 INFO L225 Difference]: With dead ends: 480 [2021-11-12 23:09:59,913 INFO L226 Difference]: Without dead ends: 309 [2021-11-12 23:09:59,914 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 [2021-11-12 23:09:59,917 INFO L933 BasicCegarLoop]: 240 mSDtfsCounter, 114 mSDsluCounter, 170 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 542.39ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 120 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.97ms SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 574.05ms IncrementalHoareTripleChecker+Time [2021-11-12 23:09:59,917 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [120 Valid, 410 Invalid, 19 Unknown, 0 Unchecked, 1.97ms Time], IncrementalHoareTripleChecker [2 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 574.05ms Time] [2021-11-12 23:09:59,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 309 states. [2021-11-12 23:09:59,934 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 309 to 307. [2021-11-12 23:09:59,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 307 states, 289 states have (on average 1.1868512110726643) internal successors, (343), 300 states have internal predecessors, (343), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-12 23:09:59,939 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 307 states to 307 states and 371 transitions. [2021-11-12 23:09:59,940 INFO L78 Accepts]: Start accepts. Automaton has 307 states and 371 transitions. Word has length 96 [2021-11-12 23:09:59,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:09:59,942 INFO L470 AbstractCegarLoop]: Abstraction has 307 states and 371 transitions. [2021-11-12 23:09:59,942 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) [2021-11-12 23:09:59,942 INFO L276 IsEmpty]: Start isEmpty. Operand 307 states and 371 transitions. [2021-11-12 23:09:59,946 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 104 [2021-11-12 23:09:59,946 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:09:59,946 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] [2021-11-12 23:09:59,953 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (8)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:00,159 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:00,349 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:00,351 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:00,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:00,352 INFO L85 PathProgramCache]: Analyzing trace with hash -824366783, now seen corresponding path program 1 times [2021-11-12 23:10:00,353 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:00,353 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [698042217] [2021-11-12 23:10:00,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:00,353 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:00,353 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:00,354 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:00,356 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-12 23:10:00,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:00,577 INFO L263 TraceCheckSpWp]: Trace formula consists of 216 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:10:00,580 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:01,437 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:02,231 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:02,232 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:02,232 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [698042217] [2021-11-12 23:10:02,232 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [698042217] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:02,232 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-12 23:10:02,232 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-12 23:10:02,233 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2058110757] [2021-11-12 23:10:02,233 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:02,233 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-12 23:10:02,234 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:02,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-12 23:10:02,234 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-12 23:10:02,235 INFO L87 Difference]: Start difference. First operand 307 states and 371 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) [2021-11-12 23:10:02,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:02,731 INFO L93 Difference]: Finished difference Result 547 states and 648 transitions. [2021-11-12 23:10:02,732 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-12 23:10:02,732 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 [2021-11-12 23:10:02,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:02,735 INFO L225 Difference]: With dead ends: 547 [2021-11-12 23:10:02,735 INFO L226 Difference]: Without dead ends: 385 [2021-11-12 23:10:02,736 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 [2021-11-12 23:10:02,737 INFO L933 BasicCegarLoop]: 241 mSDtfsCounter, 29 mSDsluCounter, 181 mSDsCounter, 0 mSdLazyCounter, 13 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 455.49ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 422 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.92ms SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 13 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 476.63ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:02,737 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 422 Invalid, 16 Unknown, 0 Unchecked, 1.92ms Time], IncrementalHoareTripleChecker [3 Valid, 13 Invalid, 0 Unknown, 0 Unchecked, 476.63ms Time] [2021-11-12 23:10:02,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2021-11-12 23:10:02,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 383. [2021-11-12 23:10:02,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 383 states, 365 states have (on average 1.158904109589041) internal successors, (423), 376 states have internal predecessors, (423), 14 states have call successors, (14), 2 states have call predecessors, (14), 2 states have return successors, (14), 6 states have call predecessors, (14), 14 states have call successors, (14) [2021-11-12 23:10:02,758 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 383 states to 383 states and 451 transitions. [2021-11-12 23:10:02,759 INFO L78 Accepts]: Start accepts. Automaton has 383 states and 451 transitions. Word has length 103 [2021-11-12 23:10:02,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:02,759 INFO L470 AbstractCegarLoop]: Abstraction has 383 states and 451 transitions. [2021-11-12 23:10:02,759 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) [2021-11-12 23:10:02,760 INFO L276 IsEmpty]: Start isEmpty. Operand 383 states and 451 transitions. [2021-11-12 23:10:02,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2021-11-12 23:10:02,761 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:02,761 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] [2021-11-12 23:10:02,781 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:02,977 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:02,978 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:02,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:02,978 INFO L85 PathProgramCache]: Analyzing trace with hash -1015837155, now seen corresponding path program 1 times [2021-11-12 23:10:02,979 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:02,979 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1083716131] [2021-11-12 23:10:02,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:02,979 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:02,979 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:02,980 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:02,981 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-12 23:10:03,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:03,265 INFO L263 TraceCheckSpWp]: Trace formula consists of 270 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:10:03,267 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:03,541 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-12 23:10:03,541 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:03,866 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:10:03,866 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:03,866 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1083716131] [2021-11-12 23:10:03,866 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1083716131] provided 1 perfect and 1 imperfect interpolant sequences [2021-11-12 23:10:03,867 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-12 23:10:03,867 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 6 [2021-11-12 23:10:03,867 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106597905] [2021-11-12 23:10:03,867 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:03,868 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:03,868 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:03,868 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:03,868 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-12 23:10:03,868 INFO L87 Difference]: Start difference. First operand 383 states and 451 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) [2021-11-12 23:10:03,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:03,940 INFO L93 Difference]: Finished difference Result 724 states and 860 transitions. [2021-11-12 23:10:03,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:10:03,941 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 [2021-11-12 23:10:03,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:03,945 INFO L225 Difference]: With dead ends: 724 [2021-11-12 23:10:03,945 INFO L226 Difference]: Without dead ends: 386 [2021-11-12 23:10:03,946 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 221 GetRequests, 216 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-11-12 23:10:03,947 INFO L933 BasicCegarLoop]: 200 mSDtfsCounter, 2 mSDsluCounter, 396 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 32.82ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.95ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 37.41ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:03,947 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 596 Invalid, 13 Unknown, 0 Unchecked, 1.95ms Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 37.41ms Time] [2021-11-12 23:10:03,948 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2021-11-12 23:10:03,965 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 386. [2021-11-12 23:10:03,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 386 states, 367 states have (on average 1.1607629427792916) internal successors, (426), 379 states have internal predecessors, (426), 14 states have call successors, (14), 2 states have call predecessors, (14), 3 states have return successors, (16), 6 states have call predecessors, (16), 14 states have call successors, (16) [2021-11-12 23:10:03,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 386 states to 386 states and 456 transitions. [2021-11-12 23:10:03,969 INFO L78 Accepts]: Start accepts. Automaton has 386 states and 456 transitions. Word has length 111 [2021-11-12 23:10:03,969 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:03,969 INFO L470 AbstractCegarLoop]: Abstraction has 386 states and 456 transitions. [2021-11-12 23:10:03,969 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) [2021-11-12 23:10:03,970 INFO L276 IsEmpty]: Start isEmpty. Operand 386 states and 456 transitions. [2021-11-12 23:10:03,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2021-11-12 23:10:03,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:03,972 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] [2021-11-12 23:10:03,992 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:04,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:04,189 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash -1408576837, now seen corresponding path program 1 times [2021-11-12 23:10:04,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:04,190 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [244273953] [2021-11-12 23:10:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:04,190 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:04,190 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:04,191 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:04,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-12 23:10:04,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:04,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:10:04,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:04,692 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:10:04,692 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:05,055 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:05,056 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:05,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [244273953] [2021-11-12 23:10:05,056 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [244273953] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:05,056 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [755000171] [2021-11-12 23:10:05,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:05,057 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:05,057 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:10:05,058 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:10:05,081 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-12 23:10:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:05,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 280 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-12 23:10:05,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:05,836 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:10:05,836 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:06,301 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2021-11-12 23:10:06,302 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [755000171] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-12 23:10:06,302 INFO L186 FreeRefinementEngine]: Found 2 perfect and 2 imperfect interpolant sequences. [2021-11-12 23:10:06,302 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [5, 5] total 10 [2021-11-12 23:10:06,302 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2756116] [2021-11-12 23:10:06,302 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-12 23:10:06,303 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-12 23:10:06,303 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:06,304 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-12 23:10:06,304 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2021-11-12 23:10:06,304 INFO L87 Difference]: Start difference. First operand 386 states and 456 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) [2021-11-12 23:10:08,852 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 [] [2021-11-12 23:10:11,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:11,266 INFO L93 Difference]: Finished difference Result 676 states and 801 transitions. [2021-11-12 23:10:11,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-12 23:10:11,267 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 [2021-11-12 23:10:11,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:11,270 INFO L225 Difference]: With dead ends: 676 [2021-11-12 23:10:11,270 INFO L226 Difference]: Without dead ends: 335 [2021-11-12 23:10:11,271 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 [2021-11-12 23:10:11,272 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 250 mSDsluCounter, 77 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 13 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4783.12ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 250 SdHoareTripleChecker+Valid, 279 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.16ms SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4905.80ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:11,272 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [250 Valid, 279 Invalid, 63 Unknown, 0 Unchecked, 3.16ms Time], IncrementalHoareTripleChecker [13 Valid, 49 Invalid, 1 Unknown, 0 Unchecked, 4905.80ms Time] [2021-11-12 23:10:11,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 335 states. [2021-11-12 23:10:11,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 335 to 219. [2021-11-12 23:10:11,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 219 states, 206 states have (on average 1.1699029126213591) internal successors, (241), 213 states have internal predecessors, (241), 8 states have call successors, (8), 2 states have call predecessors, (8), 3 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:10:11,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 219 states to 219 states and 258 transitions. [2021-11-12 23:10:11,288 INFO L78 Accepts]: Start accepts. Automaton has 219 states and 258 transitions. Word has length 113 [2021-11-12 23:10:11,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:11,289 INFO L470 AbstractCegarLoop]: Abstraction has 219 states and 258 transitions. [2021-11-12 23:10:11,289 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) [2021-11-12 23:10:11,290 INFO L276 IsEmpty]: Start isEmpty. Operand 219 states and 258 transitions. [2021-11-12 23:10:11,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 121 [2021-11-12 23:10:11,291 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:11,291 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] [2021-11-12 23:10:11,295 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (12)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:11,508 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:11,701 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:11,702 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:11,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:11,702 INFO L85 PathProgramCache]: Analyzing trace with hash -1827414795, now seen corresponding path program 1 times [2021-11-12 23:10:11,703 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:11,703 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1235093688] [2021-11-12 23:10:11,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:11,703 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:11,703 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:11,704 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:11,705 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-12 23:10:11,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:12,016 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:10:12,018 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:12,280 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:10:12,280 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:12,685 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:12,685 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:12,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1235093688] [2021-11-12 23:10:12,686 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1235093688] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:12,686 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [432882352] [2021-11-12 23:10:12,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:12,687 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:12,687 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:10:12,688 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:10:12,702 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Waiting until timeout for monitored process [2021-11-12 23:10:13,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:13,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:10:13,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:13,475 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-12 23:10:13,476 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:13,826 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 2 proven. 7 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:13,826 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [432882352] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:13,826 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [517221367] [2021-11-12 23:10:13,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-12 23:10:13,827 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:13,827 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:13,834 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:10:13,853 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2021-11-12 23:10:14,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-12 23:10:14,102 INFO L263 TraceCheckSpWp]: Trace formula consists of 295 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-12 23:10:14,105 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:14,342 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:14,342 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:14,736 INFO L134 CoverageAnalysis]: Checked inductivity of 11 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-11-12 23:10:14,737 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [517221367] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:14,737 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:10:14,737 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 5, 5] total 11 [2021-11-12 23:10:14,737 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734260879] [2021-11-12 23:10:14,737 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:10:14,741 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-12 23:10:14,741 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:14,741 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-12 23:10:14,741 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2021-11-12 23:10:14,742 INFO L87 Difference]: Start difference. First operand 219 states and 258 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) [2021-11-12 23:10:15,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:15,318 INFO L93 Difference]: Finished difference Result 405 states and 489 transitions. [2021-11-12 23:10:15,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-12 23:10:15,320 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 [2021-11-12 23:10:15,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:15,322 INFO L225 Difference]: With dead ends: 405 [2021-11-12 23:10:15,322 INFO L226 Difference]: Without dead ends: 234 [2021-11-12 23:10:15,324 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 725 GetRequests, 705 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=156, Invalid=306, Unknown=0, NotChecked=0, Total=462 [2021-11-12 23:10:15,324 INFO L933 BasicCegarLoop]: 199 mSDtfsCounter, 42 mSDsluCounter, 1166 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 215.79ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 1365 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 6.23ms SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 257.34ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:15,325 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [42 Valid, 1365 Invalid, 109 Unknown, 0 Unchecked, 6.23ms Time], IncrementalHoareTripleChecker [34 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 257.34ms Time] [2021-11-12 23:10:15,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 234 states. [2021-11-12 23:10:15,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 234 to 230. [2021-11-12 23:10:15,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 216 states have (on average 1.1990740740740742) internal successors, (259), 223 states have internal predecessors, (259), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:10:15,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 276 transitions. [2021-11-12 23:10:15,364 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 276 transitions. Word has length 120 [2021-11-12 23:10:15,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:15,364 INFO L470 AbstractCegarLoop]: Abstraction has 230 states and 276 transitions. [2021-11-12 23:10:15,365 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) [2021-11-12 23:10:15,365 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 276 transitions. [2021-11-12 23:10:15,367 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 127 [2021-11-12 23:10:15,367 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:15,368 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] [2021-11-12 23:10:15,393 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:15,591 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (14)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:15,823 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:15,982 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:15,982 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:15,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:15,983 INFO L85 PathProgramCache]: Analyzing trace with hash 852458707, now seen corresponding path program 2 times [2021-11-12 23:10:15,984 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:15,984 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1422578901] [2021-11-12 23:10:15,984 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:10:15,984 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:15,984 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:15,986 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:15,988 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-12 23:10:16,455 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:10:16,455 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:10:16,492 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:10:16,494 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:16,853 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:10:16,853 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:17,544 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:10:17,544 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:17,544 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1422578901] [2021-11-12 23:10:17,544 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1422578901] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:17,545 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2034503091] [2021-11-12 23:10:17,545 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:10:17,545 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:17,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:10:17,550 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:10:17,577 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Waiting until timeout for monitored process [2021-11-12 23:10:18,467 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:10:18,467 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:10:18,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-12 23:10:18,515 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:18,796 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:10:18,796 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:19,160 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:10:19,160 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [2034503091] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:19,160 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [484726819] [2021-11-12 23:10:19,161 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-12 23:10:19,161 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:19,161 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:19,162 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:10:19,163 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2021-11-12 23:10:19,562 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-12 23:10:19,562 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:10:19,585 INFO L263 TraceCheckSpWp]: Trace formula consists of 325 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-12 23:10:19,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:19,917 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 30 proven. 10 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2021-11-12 23:10:19,917 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:20,627 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2021-11-12 23:10:20,628 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [484726819] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:20,628 INFO L186 FreeRefinementEngine]: Found 0 perfect and 6 imperfect interpolant sequences. [2021-11-12 23:10:20,628 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8, 8, 8, 8] total 20 [2021-11-12 23:10:20,629 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [809687932] [2021-11-12 23:10:20,629 INFO L85 oduleStraightlineAll]: Using 6 imperfect interpolants to construct interpolant automaton [2021-11-12 23:10:20,630 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-12 23:10:20,630 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-12 23:10:20,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-12 23:10:20,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=248, Unknown=0, NotChecked=0, Total=380 [2021-11-12 23:10:20,631 INFO L87 Difference]: Start difference. First operand 230 states and 276 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) [2021-11-12 23:10:22,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-12 23:10:22,094 INFO L93 Difference]: Finished difference Result 423 states and 514 transitions. [2021-11-12 23:10:22,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2021-11-12 23:10:22,095 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 [2021-11-12 23:10:22,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-12 23:10:22,098 INFO L225 Difference]: With dead ends: 423 [2021-11-12 23:10:22,098 INFO L226 Difference]: Without dead ends: 243 [2021-11-12 23:10:22,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 765 GetRequests, 732 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 183 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=416, Invalid=774, Unknown=0, NotChecked=0, Total=1190 [2021-11-12 23:10:22,100 INFO L933 BasicCegarLoop]: 202 mSDtfsCounter, 60 mSDsluCounter, 1388 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 42 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 514.37ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 1590 SdHoareTripleChecker+Invalid, 240 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 8.66ms SdHoareTripleChecker+Time, 42 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 585.27ms IncrementalHoareTripleChecker+Time [2021-11-12 23:10:22,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [60 Valid, 1590 Invalid, 240 Unknown, 0 Unchecked, 8.66ms Time], IncrementalHoareTripleChecker [42 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 585.27ms Time] [2021-11-12 23:10:22,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 243 states. [2021-11-12 23:10:22,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 243 to 237. [2021-11-12 23:10:22,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 237 states, 223 states have (on average 1.1928251121076232) internal successors, (266), 230 states have internal predecessors, (266), 8 states have call successors, (8), 3 states have call predecessors, (8), 4 states have return successors, (9), 4 states have call predecessors, (9), 8 states have call successors, (9) [2021-11-12 23:10:22,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 237 states to 237 states and 283 transitions. [2021-11-12 23:10:22,120 INFO L78 Accepts]: Start accepts. Automaton has 237 states and 283 transitions. Word has length 126 [2021-11-12 23:10:22,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-12 23:10:22,121 INFO L470 AbstractCegarLoop]: Abstraction has 237 states and 283 transitions. [2021-11-12 23:10:22,121 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) [2021-11-12 23:10:22,121 INFO L276 IsEmpty]: Start isEmpty. Operand 237 states and 283 transitions. [2021-11-12 23:10:22,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2021-11-12 23:10:22,124 INFO L506 BasicCegarLoop]: Found error trace [2021-11-12 23:10:22,124 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] [2021-11-12 23:10:22,138 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (17)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:22,357 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Ended with exit code 0 [2021-11-12 23:10:22,543 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-12 23:10:22,730 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt,18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 [2021-11-12 23:10:22,730 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-12 23:10:22,731 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-12 23:10:22,731 INFO L85 PathProgramCache]: Analyzing trace with hash 453394239, now seen corresponding path program 3 times [2021-11-12 23:10:22,732 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-12 23:10:22,732 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1457415011] [2021-11-12 23:10:22,732 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:10:22,732 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-12 23:10:22,733 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat [2021-11-12 23:10:22,734 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-12 23:10:22,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2021-11-12 23:10:29,597 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:10:29,597 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:10:29,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:10:29,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:10:30,080 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:30,831 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:10:30,831 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-12 23:10:30,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1457415011] [2021-11-12 23:10:30,831 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1457415011] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:30,831 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1573868869] [2021-11-12 23:10:30,831 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:10:30,832 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-12 23:10:30,832 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 [2021-11-12 23:10:30,833 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-12 23:10:30,836 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/cvc4 --incremental --print-success --lang smt (20)] Waiting until timeout for monitored process [2021-11-12 23:10:48,873 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2021-11-12 23:10:48,873 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-12 23:10:48,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 330 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-12 23:10:48,933 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-12 23:10:49,214 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:10:49,214 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-12 23:10:49,642 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 70 proven. 15 refuted. 0 times theorem prover too weak. 56 trivial. 0 not checked. [2021-11-12 23:10:49,642 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1573868869] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-12 23:10:49,642 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [615961104] [2021-11-12 23:10:49,642 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-11-12 23:10:49,642 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-12 23:10:49,643 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 [2021-11-12 23:10:49,643 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-12 23:10:49,644 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_bdd53a42-b3f7-4191-bb9f-40f5e15b402c/bin/utaipan-vmNK8stdcF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process