./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9ad7fb26 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH --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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:51:15,661 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:51:15,663 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:51:15,692 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:51:15,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:51:15,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:51:15,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:51:15,699 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:51:15,701 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:51:15,702 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:51:15,704 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:51:15,705 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:51:15,706 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:51:15,707 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:51:15,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:51:15,710 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:51:15,711 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:51:15,712 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:51:15,715 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:51:15,717 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:51:15,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:51:15,721 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:51:15,723 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:51:15,724 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:51:15,727 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:51:15,728 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:51:15,728 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:51:15,730 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:51:15,730 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:51:15,732 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:51:15,732 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:51:15,733 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:51:15,734 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:51:15,735 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:51:15,736 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:51:15,737 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:51:15,738 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:51:15,738 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:51:15,739 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:51:15,740 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:51:15,741 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:51:15,742 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Default.epf [2021-11-03 03:51:15,767 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:51:15,768 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:51:15,769 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:51:15,769 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:51:15,770 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:51:15,770 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:51:15,770 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2021-11-03 03:51:15,771 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:51:15,771 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:51:15,772 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2021-11-03 03:51:15,772 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2021-11-03 03:51:15,772 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:51:15,773 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2021-11-03 03:51:15,773 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2021-11-03 03:51:15,774 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2021-11-03 03:51:15,774 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:51:15,775 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:51:15,775 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-03 03:51:15,775 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:51:15,776 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:51:15,776 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:51:15,776 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:51:15,776 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:51:15,776 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:51:15,777 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:51:15,777 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:51:15,777 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:51:15,777 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:51:15,778 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:51:15,778 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:51:15,778 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:51:15,778 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:51:15,779 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:51:15,779 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:51:15,779 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2021-11-03 03:51:15,779 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-03 03:51:15,780 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:51:15,780 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:51:15,780 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:51:15,780 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-11-03 03:51:16,020 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:51:16,040 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:51:16,043 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:51:16,044 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:51:16,045 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:51:16,045 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 03:51:16,102 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/77d88c66d/e967023a81184b51a3565a6717b53c64/FLAG969a0fde9 [2021-11-03 03:51:16,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:51:16,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 03:51:16,807 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/77d88c66d/e967023a81184b51a3565a6717b53c64/FLAG969a0fde9 [2021-11-03 03:51:17,078 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/77d88c66d/e967023a81184b51a3565a6717b53c64 [2021-11-03 03:51:17,080 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:51:17,082 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:51:17,084 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:17,084 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:51:17,115 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:51:17,116 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:17" (1/1) ... [2021-11-03 03:51:17,118 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4f314d7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:17, skipping insertion in model container [2021-11-03 03:51:17,118 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:17" (1/1) ... [2021-11-03 03:51:17,126 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:51:17,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:51:17,595 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 03:51:17,772 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 03:51:17,804 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:17,822 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) [2021-11-03 03:51:17,825 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@22d9edb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:17, skipping insertion in model container [2021-11-03 03:51:17,825 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:17,826 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-03 03:51:17,828 INFO L168 Benchmark]: Toolchain (without parser) took 744.82 ms. Allocated memory is still 96.5 MB. Free memory was 53.1 MB in the beginning and 60.2 MB in the end (delta: -7.1 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:51:17,830 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 72.0 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-11-03 03:51:17,832 INFO L168 Benchmark]: CACSL2BoogieTranslator took 741.86 ms. Allocated memory is still 96.5 MB. Free memory was 52.9 MB in the beginning and 60.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. [2021-11-03 03:51:17,833 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 96.5 MB. Free memory was 72.1 MB in the beginning and 72.0 MB in the end (delta: 53.0 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 741.86 ms. Allocated memory is still 96.5 MB. Free memory was 52.9 MB in the beginning and 60.2 MB in the end (delta: -7.3 MB). Peak memory consumption was 4.7 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 766]: 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/TaipanReach.xml -i ../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH --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 dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd --- Real Ultimate output --- This is Ultimate 0.2.1-dev-9ad7fb2 [2021-11-03 03:51:20,202 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-03 03:51:20,205 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-03 03:51:20,255 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-03 03:51:20,256 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-03 03:51:20,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-03 03:51:20,264 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-03 03:51:20,273 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-03 03:51:20,277 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-03 03:51:20,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-03 03:51:20,289 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-03 03:51:20,291 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-03 03:51:20,292 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-03 03:51:20,294 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-03 03:51:20,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-03 03:51:20,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-03 03:51:20,300 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-03 03:51:20,301 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-03 03:51:20,318 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-03 03:51:20,319 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-03 03:51:20,321 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-03 03:51:20,323 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-03 03:51:20,324 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-03 03:51:20,325 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-03 03:51:20,329 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-03 03:51:20,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-03 03:51:20,330 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-03 03:51:20,331 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-03 03:51:20,332 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-03 03:51:20,333 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-03 03:51:20,334 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-03 03:51:20,335 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-03 03:51:20,336 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-03 03:51:20,336 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-03 03:51:20,338 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-03 03:51:20,338 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-03 03:51:20,339 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-03 03:51:20,340 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-03 03:51:20,340 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-03 03:51:20,341 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-03 03:51:20,342 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-03 03:51:20,343 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/config/svcomp-Reach-32bit-Taipan_Bitvector.epf [2021-11-03 03:51:20,369 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-03 03:51:20,369 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-03 03:51:20,370 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-03 03:51:20,370 INFO L138 SettingsManager]: * User list type=DISABLED [2021-11-03 03:51:20,371 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2021-11-03 03:51:20,371 INFO L138 SettingsManager]: * Explicit value domain=true [2021-11-03 03:51:20,371 INFO L138 SettingsManager]: * Octagon Domain=false [2021-11-03 03:51:20,371 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2021-11-03 03:51:20,372 INFO L138 SettingsManager]: * Interval Domain=false [2021-11-03 03:51:20,373 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-03 03:51:20,373 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-03 03:51:20,373 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-03 03:51:20,373 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-03 03:51:20,374 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-03 03:51:20,374 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-03 03:51:20,374 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-03 03:51:20,374 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-03 03:51:20,374 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-03 03:51:20,375 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-03 03:51:20,375 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-03 03:51:20,375 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-03 03:51:20,375 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-03 03:51:20,376 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-03 03:51:20,376 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-03 03:51:20,376 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-03 03:51:20,376 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-03 03:51:20,377 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:51:20,377 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-03 03:51:20,377 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-03 03:51:20,378 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-03 03:51:20,378 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2021-11-03 03:51:20,378 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-03 03:51:20,378 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-03 03:51:20,379 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-03 03:51:20,379 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-03 03:51:20,379 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> dfe9cedb3fb732c747a1ef802da6fccda86efe7de6f5d2fc74063f23f28dc4dd [2021-11-03 03:51:20,755 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-03 03:51:20,791 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-03 03:51:20,793 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-03 03:51:20,795 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-03 03:51:20,795 INFO L275 PluginConnector]: CDTParser initialized [2021-11-03 03:51:20,798 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/../../sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 03:51:20,865 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/b273cb7ac/e89f9e404968463ea72bbd441562a51f/FLAGe7735c8f0 [2021-11-03 03:51:21,560 INFO L306 CDTParser]: Found 1 translation units. [2021-11-03 03:51:21,561 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i [2021-11-03 03:51:21,580 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/b273cb7ac/e89f9e404968463ea72bbd441562a51f/FLAGe7735c8f0 [2021-11-03 03:51:21,725 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/data/b273cb7ac/e89f9e404968463ea72bbd441562a51f [2021-11-03 03:51:21,727 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-03 03:51:21,728 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-03 03:51:21,729 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:21,729 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-03 03:51:21,733 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-03 03:51:21,733 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:21" (1/1) ... [2021-11-03 03:51:21,735 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c872a45 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:21, skipping insertion in model container [2021-11-03 03:51:21,735 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.11 03:51:21" (1/1) ... [2021-11-03 03:51:21,742 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-03 03:51:21,798 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:51:22,220 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 03:51:22,411 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 03:51:22,436 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:22,458 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-03 03:51:22,475 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-03 03:51:22,495 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 03:51:22,570 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 03:51:22,582 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:22,586 INFO L203 MainTranslator]: Completed pre-run [2021-11-03 03:51:22,617 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[33021,33034] [2021-11-03 03:51:22,670 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_c3c2a89b-f251-4ad7-a071-045170ff70d4/sv-benchmarks/c/uthash-2.0.2/uthash_SFH_test8-2.i[45234,45247] [2021-11-03 03:51:22,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-11-03 03:51:22,742 INFO L208 MainTranslator]: Completed translation [2021-11-03 03:51:22,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22 WrapperNode [2021-11-03 03:51:22,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-03 03:51:22,745 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-03 03:51:22,745 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-03 03:51:22,745 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-03 03:51:22,753 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:22,822 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:22,907 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-03 03:51:22,908 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-03 03:51:22,908 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-03 03:51:22,909 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-03 03:51:22,941 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:22,942 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:22,953 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:22,953 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:23,030 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:23,075 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:23,083 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:23,100 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-03 03:51:23,102 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-03 03:51:23,102 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-03 03:51:23,102 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-03 03:51:23,103 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (1/1) ... [2021-11-03 03:51:23,110 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-03 03:51:23,121 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:23,138 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-03 03:51:23,171 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-03 03:51:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE1 [2021-11-03 03:51:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-11-03 03:51:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-03 03:51:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-03 03:51:23,193 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure memcmp [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-11-03 03:51:23,194 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-03 03:51:23,195 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-03 03:51:30,575 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-03 03:51:30,575 INFO L299 CfgBuilder]: Removed 145 assume(true) statements. [2021-11-03 03:51:30,578 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:30 BoogieIcfgContainer [2021-11-03 03:51:30,578 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-03 03:51:30,580 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-03 03:51:30,580 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-03 03:51:30,583 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-03 03:51:30,583 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.11 03:51:21" (1/3) ... [2021-11-03 03:51:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a0da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:30, skipping insertion in model container [2021-11-03 03:51:30,584 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.11 03:51:22" (2/3) ... [2021-11-03 03:51:30,584 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29a0da5d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.11 03:51:30, skipping insertion in model container [2021-11-03 03:51:30,585 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.11 03:51:30" (3/3) ... [2021-11-03 03:51:30,586 INFO L111 eAbstractionObserver]: Analyzing ICFG uthash_SFH_test8-2.i [2021-11-03 03:51:30,591 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-03 03:51:30,591 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 31 error locations. [2021-11-03 03:51:30,639 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-03 03:51:30,645 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 [2021-11-03 03:51:30,645 INFO L340 AbstractCegarLoop]: Starting to check reachability of 31 error locations. [2021-11-03 03:51:30,667 INFO L276 IsEmpty]: Start isEmpty. Operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 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) [2021-11-03 03:51:30,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-11-03 03:51:30,673 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:30,673 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:30,674 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:30,679 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:30,679 INFO L85 PathProgramCache]: Analyzing trace with hash -109840528, now seen corresponding path program 1 times [2021-11-03 03:51:30,690 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:30,691 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496759286] [2021-11-03 03:51:30,691 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:30,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:30,692 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:30,695 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:30,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-03 03:51:30,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:30,880 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 1 conjunts are in the unsatisfiable core [2021-11-03 03:51:30,886 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:30,932 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:30,933 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:30,959 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:30,960 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:30,960 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496759286] [2021-11-03 03:51:30,961 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496759286] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:30,961 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:30,961 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-11-03 03:51:30,963 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684614099] [2021-11-03 03:51:30,967 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2021-11-03 03:51:30,968 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:30,980 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2021-11-03 03:51:30,981 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2021-11-03 03:51:30,984 INFO L87 Difference]: Start difference. First operand has 331 states, 299 states have (on average 1.7826086956521738) internal successors, (533), 330 states have internal predecessors, (533), 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) 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) [2021-11-03 03:51:31,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:31,028 INFO L93 Difference]: Finished difference Result 660 states and 1064 transitions. [2021-11-03 03:51:31,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2021-11-03 03:51:31,030 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 [2021-11-03 03:51:31,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:31,043 INFO L225 Difference]: With dead ends: 660 [2021-11-03 03:51:31,043 INFO L226 Difference]: Without dead ends: 298 [2021-11-03 03:51:31,048 INFO L786 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 [2021-11-03 03:51:31,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 298 states. [2021-11-03 03:51:31,095 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 298 to 298. [2021-11-03 03:51:31,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 267 states have (on average 1.4344569288389513) internal successors, (383), 297 states have internal predecessors, (383), 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) [2021-11-03 03:51:31,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 383 transitions. [2021-11-03 03:51:31,100 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 383 transitions. Word has length 9 [2021-11-03 03:51:31,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:31,101 INFO L470 AbstractCegarLoop]: Abstraction has 298 states and 383 transitions. [2021-11-03 03:51:31,101 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) [2021-11-03 03:51:31,101 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 383 transitions. [2021-11-03 03:51:31,103 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:51:31,104 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:31,104 INFO L513 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] [2021-11-03 03:51:31,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:31,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:31,317 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:31,318 INFO L85 PathProgramCache]: Analyzing trace with hash 518597571, now seen corresponding path program 1 times [2021-11-03 03:51:31,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:31,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1825895048] [2021-11-03 03:51:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:31,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:31,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:31,321 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:31,327 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-03 03:51:31,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:31,542 INFO L263 TraceCheckSpWp]: Trace formula consists of 95 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:31,546 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:31,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:31,716 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:31,888 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:31,888 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:31,888 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1825895048] [2021-11-03 03:51:31,889 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1825895048] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:31,889 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:31,889 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:51:31,889 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [799984245] [2021-11-03 03:51:31,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:51:31,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:31,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:51:31,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:51:31,893 INFO L87 Difference]: Start difference. First operand 298 states and 383 transitions. Second operand has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-03 03:51:32,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:32,076 INFO L93 Difference]: Finished difference Result 451 states and 581 transitions. [2021-11-03 03:51:32,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:51:32,077 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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 [2021-11-03 03:51:32,077 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:32,080 INFO L225 Difference]: With dead ends: 451 [2021-11-03 03:51:32,080 INFO L226 Difference]: Without dead ends: 307 [2021-11-03 03:51:32,082 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 83 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:51:32,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 307 states. [2021-11-03 03:51:32,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 307 to 301. [2021-11-03 03:51:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 270 states have (on average 1.4) internal successors, (378), 300 states have internal predecessors, (378), 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) [2021-11-03 03:51:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 378 transitions. [2021-11-03 03:51:32,102 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 378 transitions. Word has length 44 [2021-11-03 03:51:32,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:32,102 INFO L470 AbstractCegarLoop]: Abstraction has 301 states and 378 transitions. [2021-11-03 03:51:32,103 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 9.4) internal successors, (47), 5 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) [2021-11-03 03:51:32,103 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 378 transitions. [2021-11-03 03:51:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2021-11-03 03:51:32,105 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:32,105 INFO L513 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] [2021-11-03 03:51:32,121 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:32,317 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:32,317 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:32,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:32,318 INFO L85 PathProgramCache]: Analyzing trace with hash -230237769, now seen corresponding path program 1 times [2021-11-03 03:51:32,319 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:32,319 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1045694038] [2021-11-03 03:51:32,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:32,320 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:32,320 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:32,321 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:32,325 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-03 03:51:32,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:32,609 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:32,612 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:32,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:32,654 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:32,655 INFO L173 IndexEqualityManager]: detected equality via solver [2021-11-03 03:51:32,727 INFO L354 Elim1Store]: treesize reduction 166, result has 13.5 percent of original size [2021-11-03 03:51:32,728 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 [2021-11-03 03:51:32,819 INFO L354 Elim1Store]: treesize reduction 66, result has 1.5 percent of original size [2021-11-03 03:51:32,819 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 [2021-11-03 03:51:32,948 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:32,948 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:33,150 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:33,150 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:33,150 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1045694038] [2021-11-03 03:51:33,151 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1045694038] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:33,151 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:33,151 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-11-03 03:51:33,151 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9569856] [2021-11-03 03:51:33,152 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-03 03:51:33,152 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:33,153 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-03 03:51:33,153 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:51:33,153 INFO L87 Difference]: Start difference. First operand 301 states and 378 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) [2021-11-03 03:51:43,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:43,504 INFO L93 Difference]: Finished difference Result 768 states and 954 transitions. [2021-11-03 03:51:43,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-03 03:51:43,506 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 [2021-11-03 03:51:43,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:43,510 INFO L225 Difference]: With dead ends: 768 [2021-11-03 03:51:43,510 INFO L226 Difference]: Without dead ends: 620 [2021-11-03 03:51:43,512 INFO L786 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 [2021-11-03 03:51:43,513 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 620 states. [2021-11-03 03:51:43,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 620 to 303. [2021-11-03 03:51:43,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 303 states, 272 states have (on average 1.3970588235294117) internal successors, (380), 302 states have internal predecessors, (380), 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) [2021-11-03 03:51:43,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 303 states to 303 states and 380 transitions. [2021-11-03 03:51:43,535 INFO L78 Accepts]: Start accepts. Automaton has 303 states and 380 transitions. Word has length 44 [2021-11-03 03:51:43,535 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:43,535 INFO L470 AbstractCegarLoop]: Abstraction has 303 states and 380 transitions. [2021-11-03 03:51:43,535 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) [2021-11-03 03:51:43,536 INFO L276 IsEmpty]: Start isEmpty. Operand 303 states and 380 transitions. [2021-11-03 03:51:43,537 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:51:43,538 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:43,538 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:43,562 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:43,763 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:43,763 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:43,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:43,764 INFO L85 PathProgramCache]: Analyzing trace with hash 1543983351, now seen corresponding path program 1 times [2021-11-03 03:51:43,765 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:43,765 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1525455689] [2021-11-03 03:51:43,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:43,766 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:43,766 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:43,767 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:43,773 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-03 03:51:44,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:44,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:44,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:44,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:44,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:44,454 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:44,454 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1525455689] [2021-11-03 03:51:44,455 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1525455689] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:44,455 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:44,455 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 5 [2021-11-03 03:51:44,455 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [679058935] [2021-11-03 03:51:44,456 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-03 03:51:44,456 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:44,457 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-03 03:51:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-11-03 03:51:44,458 INFO L87 Difference]: Start difference. First operand 303 states and 380 transitions. Second operand has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-03 03:51:44,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:44,588 INFO L93 Difference]: Finished difference Result 611 states and 768 transitions. [2021-11-03 03:51:44,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:51:44,588 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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 57 [2021-11-03 03:51:44,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:44,591 INFO L225 Difference]: With dead ends: 611 [2021-11-03 03:51:44,591 INFO L226 Difference]: Without dead ends: 312 [2021-11-03 03:51:44,592 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 109 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-11-03 03:51:44,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2021-11-03 03:51:44,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 306. [2021-11-03 03:51:44,605 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 306 states, 275 states have (on average 1.3636363636363635) internal successors, (375), 305 states have internal predecessors, (375), 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) [2021-11-03 03:51:44,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 306 states to 306 states and 375 transitions. [2021-11-03 03:51:44,607 INFO L78 Accepts]: Start accepts. Automaton has 306 states and 375 transitions. Word has length 57 [2021-11-03 03:51:44,607 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:44,607 INFO L470 AbstractCegarLoop]: Abstraction has 306 states and 375 transitions. [2021-11-03 03:51:44,608 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 12.0) internal successors, (60), 5 states have internal predecessors, (60), 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) [2021-11-03 03:51:44,608 INFO L276 IsEmpty]: Start isEmpty. Operand 306 states and 375 transitions. [2021-11-03 03:51:44,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-11-03 03:51:44,610 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:44,610 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:44,633 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:44,825 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:44,826 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:44,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:44,826 INFO L85 PathProgramCache]: Analyzing trace with hash -1996694677, now seen corresponding path program 1 times [2021-11-03 03:51:44,827 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:44,827 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1710480839] [2021-11-03 03:51:44,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:44,828 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:44,828 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:44,829 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:44,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-03 03:51:45,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:45,167 INFO L263 TraceCheckSpWp]: Trace formula consists of 150 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:45,171 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:45,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:45,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:46,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:46,106 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:46,107 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1710480839] [2021-11-03 03:51:46,107 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1710480839] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:46,107 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:46,107 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-03 03:51:46,107 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1157696962] [2021-11-03 03:51:46,108 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-03 03:51:46,108 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:46,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-03 03:51:46,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:46,109 INFO L87 Difference]: Start difference. First operand 306 states and 375 transitions. Second operand has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-03 03:51:46,823 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:46,823 INFO L93 Difference]: Finished difference Result 779 states and 950 transitions. [2021-11-03 03:51:46,823 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-03 03:51:46,824 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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 57 [2021-11-03 03:51:46,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:46,827 INFO L225 Difference]: With dead ends: 779 [2021-11-03 03:51:46,827 INFO L226 Difference]: Without dead ends: 477 [2021-11-03 03:51:46,828 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 112 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-11-03 03:51:46,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 477 states. [2021-11-03 03:51:46,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 477 to 444. [2021-11-03 03:51:46,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 444 states, 413 states have (on average 1.3559322033898304) internal successors, (560), 443 states have internal predecessors, (560), 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) [2021-11-03 03:51:46,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 444 states to 444 states and 560 transitions. [2021-11-03 03:51:46,846 INFO L78 Accepts]: Start accepts. Automaton has 444 states and 560 transitions. Word has length 57 [2021-11-03 03:51:46,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:46,846 INFO L470 AbstractCegarLoop]: Abstraction has 444 states and 560 transitions. [2021-11-03 03:51:46,846 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 19.0) internal successors, (57), 3 states have internal predecessors, (57), 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) [2021-11-03 03:51:46,847 INFO L276 IsEmpty]: Start isEmpty. Operand 444 states and 560 transitions. [2021-11-03 03:51:46,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2021-11-03 03:51:46,849 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:46,849 INFO L513 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:46,884 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:47,065 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:47,065 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:47,065 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash -1378561412, now seen corresponding path program 1 times [2021-11-03 03:51:47,066 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:47,067 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [912585632] [2021-11-03 03:51:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:47,067 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:47,068 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:47,071 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-03 03:51:47,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:47,489 INFO L263 TraceCheckSpWp]: Trace formula consists of 202 conjuncts, 3 conjunts are in the unsatisfiable core [2021-11-03 03:51:47,492 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:47,687 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:47,687 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:47,847 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-03 03:51:47,848 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:47,848 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [912585632] [2021-11-03 03:51:47,848 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [912585632] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-03 03:51:47,848 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-11-03 03:51:47,848 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-11-03 03:51:47,848 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414296784] [2021-11-03 03:51:47,849 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-03 03:51:47,849 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:47,849 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-03 03:51:47,850 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:51:47,850 INFO L87 Difference]: Start difference. First operand 444 states and 560 transitions. Second operand has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-03 03:51:47,926 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:47,926 INFO L93 Difference]: Finished difference Result 846 states and 1077 transitions. [2021-11-03 03:51:47,927 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-03 03:51:47,927 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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 64 [2021-11-03 03:51:47,928 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:47,930 INFO L225 Difference]: With dead ends: 846 [2021-11-03 03:51:47,931 INFO L226 Difference]: Without dead ends: 447 [2021-11-03 03:51:47,932 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 124 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-11-03 03:51:47,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 447 states. [2021-11-03 03:51:47,948 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 447 to 447. [2021-11-03 03:51:47,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 447 states, 416 states have (on average 1.3533653846153846) internal successors, (563), 446 states have internal predecessors, (563), 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) [2021-11-03 03:51:47,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 447 states to 447 states and 563 transitions. [2021-11-03 03:51:47,951 INFO L78 Accepts]: Start accepts. Automaton has 447 states and 563 transitions. Word has length 64 [2021-11-03 03:51:47,952 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:47,952 INFO L470 AbstractCegarLoop]: Abstraction has 447 states and 563 transitions. [2021-11-03 03:51:47,952 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 16.5) internal successors, (66), 4 states have internal predecessors, (66), 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) [2021-11-03 03:51:47,952 INFO L276 IsEmpty]: Start isEmpty. Operand 447 states and 563 transitions. [2021-11-03 03:51:47,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2021-11-03 03:51:47,954 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:47,954 INFO L513 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] [2021-11-03 03:51:47,971 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:48,169 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 [2021-11-03 03:51:48,169 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:48,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:48,169 INFO L85 PathProgramCache]: Analyzing trace with hash 1549801264, now seen corresponding path program 1 times [2021-11-03 03:51:48,170 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:48,171 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [572146944] [2021-11-03 03:51:48,171 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:48,171 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:48,171 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:48,172 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:48,211 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-03 03:51:48,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:48,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:51:48,682 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:48,912 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:48,913 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:49,177 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:49,178 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:49,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [572146944] [2021-11-03 03:51:49,178 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [572146944] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:49,178 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1573225419] [2021-11-03 03:51:49,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:49,179 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:51:49,179 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:51:49,185 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:51:49,203 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Waiting until timeout for monitored process [2021-11-03 03:51:49,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:49,892 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 5 conjunts are in the unsatisfiable core [2021-11-03 03:51:49,895 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:50,110 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:50,110 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:50,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2021-11-03 03:51:50,281 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1573225419] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:50,281 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [284867038] [2021-11-03 03:51:50,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-03 03:51:50,281 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:51:50,282 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:51:50,289 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:51:50,332 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-11-03 03:51:50,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-03 03:51:50,841 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-03 03:51:50,844 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:51:51,065 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:51,214 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2021-11-03 03:51:51,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [284867038] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:51,214 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 6 imperfect interpolant sequences. [2021-11-03 03:51:51,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5, 5, 4, 4] total 10 [2021-11-03 03:51:51,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1531602018] [2021-11-03 03:51:51,216 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-03 03:51:51,216 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2021-11-03 03:51:51,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-03 03:51:51,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2021-11-03 03:51:51,217 INFO L87 Difference]: Start difference. First operand 447 states and 563 transitions. Second operand has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 03:51:51,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-03 03:51:51,580 INFO L93 Difference]: Finished difference Result 857 states and 1093 transitions. [2021-11-03 03:51:51,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-03 03:51:51,581 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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 67 [2021-11-03 03:51:51,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-03 03:51:51,584 INFO L225 Difference]: With dead ends: 857 [2021-11-03 03:51:51,584 INFO L226 Difference]: Without dead ends: 455 [2021-11-03 03:51:51,585 INFO L786 BasicCegarLoop]: 0 DeclaredPredicates, 400 GetRequests, 390 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2021-11-03 03:51:51,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 455 states. [2021-11-03 03:51:51,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 455 to 455. [2021-11-03 03:51:51,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 455 states, 424 states have (on average 1.346698113207547) internal successors, (571), 454 states have internal predecessors, (571), 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) [2021-11-03 03:51:51,602 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 455 states to 455 states and 571 transitions. [2021-11-03 03:51:51,602 INFO L78 Accepts]: Start accepts. Automaton has 455 states and 571 transitions. Word has length 67 [2021-11-03 03:51:51,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-03 03:51:51,603 INFO L470 AbstractCegarLoop]: Abstraction has 455 states and 571 transitions. [2021-11-03 03:51:51,604 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 8.1) internal successors, (81), 10 states have internal predecessors, (81), 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) [2021-11-03 03:51:51,604 INFO L276 IsEmpty]: Start isEmpty. Operand 455 states and 571 transitions. [2021-11-03 03:51:51,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2021-11-03 03:51:51,606 INFO L505 BasicCegarLoop]: Found error trace [2021-11-03 03:51:51,607 INFO L513 BasicCegarLoop]: trace histogram [6, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-03 03:51:51,632 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:51,848 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:52,028 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (9)] Forceful destruction successful, exit code 0 [2021-11-03 03:51:52,224 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3,10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true,9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt [2021-11-03 03:51:52,225 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr1ASSERT_VIOLATIONERROR_FUNCTION, ULTIMATE.startErr2ASSERT_VIOLATIONERROR_FUNCTION (and 28 more)] === [2021-11-03 03:51:52,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-03 03:51:52,225 INFO L85 PathProgramCache]: Analyzing trace with hash -2058382096, now seen corresponding path program 2 times [2021-11-03 03:51:52,226 INFO L121 FreeRefinementEngine]: Executing refinement strategy WALRUS [2021-11-03 03:51:52,226 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [843047277] [2021-11-03 03:51:52,226 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:51:52,226 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-03 03:51:52,226 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat [2021-11-03 03:51:52,231 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-03 03:51:52,236 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-03 03:51:53,722 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:51:53,722 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:51:53,756 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:51:53,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:51:54,121 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:51:54,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:51:54,583 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:51:54,584 INFO L139 FreeRefinementEngine]: Strategy WALRUS found an infeasible trace [2021-11-03 03:51:54,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [843047277] [2021-11-03 03:51:54,584 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [843047277] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:51:54,584 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [931565908] [2021-11-03 03:51:54,584 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:51:54,584 INFO L168 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-11-03 03:51:54,584 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 [2021-11-03 03:51:54,585 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-11-03 03:51:54,586 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/cvc4 --incremental --print-success --lang smt (12)] Waiting until timeout for monitored process [2021-11-03 03:52:07,681 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-11-03 03:52:07,681 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-11-03 03:52:07,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 257 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-03 03:52:07,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-03 03:52:07,944 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:52:07,944 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-03 03:52:08,139 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2021-11-03 03:52:08,139 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [931565908] provided 0 perfect and 2 imperfect interpolant sequences [2021-11-03 03:52:08,140 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1218197986] [2021-11-03 03:52:08,140 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-11-03 03:52:08,140 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-03 03:52:08,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 [2021-11-03 03:52:08,149 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-03 03:52:08,169 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_c3c2a89b-f251-4ad7-a071-045170ff70d4/bin/utaipan-aC7eJsxGYH/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process