./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ........................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/lib/jvm/java-8-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/config -Xmx12G -Xms1G -jar /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i -s /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Taipan --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-12-07 20:37:23,696 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:37:23,698 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:37:23,705 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:37:23,705 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:37:23,706 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:37:23,707 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:37:23,708 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:37:23,710 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:37:23,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:37:23,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:37:23,712 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:37:23,712 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:37:23,712 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:37:23,713 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:37:23,714 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:37:23,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:37:23,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:37:23,716 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:37:23,718 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:37:23,719 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:37:23,720 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:37:23,721 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:37:23,721 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:37:23,723 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:37:23,723 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:37:23,723 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:37:23,724 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:37:23,724 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:37:23,724 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:37:23,724 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:37:23,725 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:37:23,725 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:37:23,726 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:37:23,726 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:37:23,726 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:37:23,727 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:37:23,727 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:37:23,727 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:37:23,728 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:37:23,728 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:37:23,728 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2019-12-07 20:37:23,739 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:37:23,739 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:37:23,740 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:37:23,740 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:37:23,740 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:37:23,740 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:37:23,740 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2019-12-07 20:37:23,740 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:37:23,741 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2019-12-07 20:37:23,741 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2019-12-07 20:37:23,742 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:37:23,742 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:37:23,742 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:37:23,742 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:37:23,742 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:37:23,742 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:37:23,742 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:37:23,743 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:37:23,743 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:37:23,744 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-12-07 20:37:23,744 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:37:23,745 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:37:23,745 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2019-12-07 20:37:23,843 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:37:23,851 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:37:23,853 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:37:23,854 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:37:23,854 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:37:23,855 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-12-07 20:37:23,892 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/2ade86de9/1626342a41e2431a9e7f069cbc60cec2/FLAG448d23a4f [2019-12-07 20:37:24,375 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:37:24,375 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-12-07 20:37:24,385 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/2ade86de9/1626342a41e2431a9e7f069cbc60cec2/FLAG448d23a4f [2019-12-07 20:37:24,394 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/2ade86de9/1626342a41e2431a9e7f069cbc60cec2 [2019-12-07 20:37:24,396 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:37:24,397 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:37:24,398 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:37:24,398 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:37:24,400 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:37:24,400 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:37:24" (1/1) ... [2019-12-07 20:37:24,402 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@14dcdfae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:24, skipping insertion in model container [2019-12-07 20:37:24,402 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:37:24" (1/1) ... [2019-12-07 20:37:24,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:37:24,433 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:37:24,700 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:37:24,715 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) [2019-12-07 20:37:24,716 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@64fb0670 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:24, skipping insertion in model container [2019-12-07 20:37:24,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:37:24,716 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2019-12-07 20:37:24,718 INFO L168 Benchmark]: Toolchain (without parser) took 320.21 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:24,718 INFO L168 Benchmark]: CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:37:24,719 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:24,720 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.13 ms. Allocated memory is still 1.0 GB. Free memory is still 955.5 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 318.50 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 77.1 MB). Free memory was 934.0 MB in the beginning and 1.1 GB in the end (delta: -126.8 MB). Peak memory consumption was 18.5 MB. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: 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... ### Bit-precise run ### This is Ultimate 0.1.25-f470102 [2019-12-07 20:37:25,808 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-12-07 20:37:25,810 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-12-07 20:37:25,817 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-12-07 20:37:25,818 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-12-07 20:37:25,818 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-12-07 20:37:25,819 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-12-07 20:37:25,821 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-12-07 20:37:25,822 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-12-07 20:37:25,823 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-12-07 20:37:25,823 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-12-07 20:37:25,824 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-12-07 20:37:25,824 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-12-07 20:37:25,825 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-12-07 20:37:25,826 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-12-07 20:37:25,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-12-07 20:37:25,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-12-07 20:37:25,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-12-07 20:37:25,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-12-07 20:37:25,830 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-12-07 20:37:25,832 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-12-07 20:37:25,832 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-12-07 20:37:25,833 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-12-07 20:37:25,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-12-07 20:37:25,836 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-12-07 20:37:25,836 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-12-07 20:37:25,836 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-12-07 20:37:25,837 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-12-07 20:37:25,837 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-12-07 20:37:25,837 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-12-07 20:37:25,838 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-12-07 20:37:25,838 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-12-07 20:37:25,839 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-12-07 20:37:25,839 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-12-07 20:37:25,840 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-12-07 20:37:25,840 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-12-07 20:37:25,840 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-12-07 20:37:25,841 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-12-07 20:37:25,841 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-12-07 20:37:25,841 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-12-07 20:37:25,842 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-12-07 20:37:25,842 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2019-12-07 20:37:25,852 INFO L113 SettingsManager]: Loading preferences was successful [2019-12-07 20:37:25,853 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-12-07 20:37:25,853 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-12-07 20:37:25,853 INFO L138 SettingsManager]: * User list type=DISABLED [2019-12-07 20:37:25,854 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-12-07 20:37:25,854 INFO L138 SettingsManager]: * Explicit value domain=true [2019-12-07 20:37:25,854 INFO L138 SettingsManager]: * Octagon Domain=false [2019-12-07 20:37:25,854 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2019-12-07 20:37:25,854 INFO L138 SettingsManager]: * Interval Domain=false [2019-12-07 20:37:25,855 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-12-07 20:37:25,855 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-12-07 20:37:25,855 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-12-07 20:37:25,855 INFO L138 SettingsManager]: * sizeof long=4 [2019-12-07 20:37:25,855 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-12-07 20:37:25,855 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-12-07 20:37:25,855 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-12-07 20:37:25,856 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * sizeof long double=12 [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * Use constant arrays=true [2019-12-07 20:37:25,857 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-12-07 20:37:25,857 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:37:25,858 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-12-07 20:37:25,858 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-12-07 20:37:25,859 INFO L138 SettingsManager]: * Logic for external solver=AUFBV Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 254e3dbb3d4b2f0b71591f87e1d60dc8ec7bfdff [2019-12-07 20:37:26,020 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-12-07 20:37:26,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-12-07 20:37:26,033 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-12-07 20:37:26,034 INFO L271 PluginConnector]: Initializing CDTParser... [2019-12-07 20:37:26,035 INFO L275 PluginConnector]: CDTParser initialized [2019-12-07 20:37:26,035 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-12-07 20:37:26,074 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/4869d41c5/81b913de07c1416bae110a45728dcefa/FLAG19c0e2522 [2019-12-07 20:37:26,464 INFO L306 CDTParser]: Found 1 translation units. [2019-12-07 20:37:26,464 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/sv-benchmarks/c/ldv-memsafety/memleaks_test6_1.i [2019-12-07 20:37:26,475 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/4869d41c5/81b913de07c1416bae110a45728dcefa/FLAG19c0e2522 [2019-12-07 20:37:26,484 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/data/4869d41c5/81b913de07c1416bae110a45728dcefa [2019-12-07 20:37:26,486 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-12-07 20:37:26,487 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2019-12-07 20:37:26,487 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-12-07 20:37:26,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-12-07 20:37:26,490 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-12-07 20:37:26,490 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,492 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b5dd555 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26, skipping insertion in model container [2019-12-07 20:37:26,492 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,497 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-12-07 20:37:26,529 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:37:26,796 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:37:26,808 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2019-12-07 20:37:26,817 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-12-07 20:37:26,847 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:37:26,852 INFO L203 MainTranslator]: Completed pre-run [2019-12-07 20:37:26,887 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-12-07 20:37:26,940 INFO L208 MainTranslator]: Completed translation [2019-12-07 20:37:26,941 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26 WrapperNode [2019-12-07 20:37:26,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-12-07 20:37:26,941 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2019-12-07 20:37:26,941 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2019-12-07 20:37:26,942 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2019-12-07 20:37:26,947 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,963 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,978 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2019-12-07 20:37:26,978 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-12-07 20:37:26,979 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-12-07 20:37:26,979 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-12-07 20:37:26,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,985 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,987 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,987 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,995 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,996 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... [2019-12-07 20:37:26,998 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-12-07 20:37:26,999 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-12-07 20:37:26,999 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-12-07 20:37:26,999 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-12-07 20:37:26,999 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-12-07 20:37:27,037 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-12-07 20:37:27,038 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-12-07 20:37:27,038 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-12-07 20:37:27,260 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-12-07 20:37:27,260 INFO L287 CfgBuilder]: Removed 16 assume(true) statements. [2019-12-07 20:37:27,261 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:37:27 BoogieIcfgContainer [2019-12-07 20:37:27,261 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-12-07 20:37:27,262 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-12-07 20:37:27,262 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-12-07 20:37:27,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-12-07 20:37:27,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.12 08:37:26" (1/3) ... [2019-12-07 20:37:27,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2e374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:37:27, skipping insertion in model container [2019-12-07 20:37:27,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.12 08:37:26" (2/3) ... [2019-12-07 20:37:27,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a2e374 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.12 08:37:27, skipping insertion in model container [2019-12-07 20:37:27,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:37:27" (3/3) ... [2019-12-07 20:37:27,266 INFO L109 eAbstractionObserver]: Analyzing ICFG memleaks_test6_1.i [2019-12-07 20:37:27,272 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-12-07 20:37:27,276 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2019-12-07 20:37:27,283 INFO L249 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2019-12-07 20:37:27,295 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-12-07 20:37:27,295 INFO L374 AbstractCegarLoop]: Hoare is false [2019-12-07 20:37:27,295 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-12-07 20:37:27,295 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-12-07 20:37:27,295 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-12-07 20:37:27,295 INFO L378 AbstractCegarLoop]: Difference is false [2019-12-07 20:37:27,295 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-12-07 20:37:27,295 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-12-07 20:37:27,304 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2019-12-07 20:37:27,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:37:27,309 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:27,309 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:27,310 INFO L410 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:27,313 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:27,313 INFO L82 PathProgramCache]: Analyzing trace with hash 119409031, now seen corresponding path program 1 times [2019-12-07 20:37:27,320 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:27,320 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1437976653] [2019-12-07 20:37:27,320 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:27,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:27,373 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:37:27,376 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:27,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:27,402 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:27,405 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:27,406 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1437976653] [2019-12-07 20:37:27,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:27,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:37:27,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1511783449] [2019-12-07 20:37:27,411 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:27,411 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:27,420 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:27,421 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:27,423 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 4 states. [2019-12-07 20:37:27,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:27,490 INFO L93 Difference]: Finished difference Result 71 states and 77 transitions. [2019-12-07 20:37:27,491 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-12-07 20:37:27,492 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 20:37:27,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:27,499 INFO L225 Difference]: With dead ends: 71 [2019-12-07 20:37:27,499 INFO L226 Difference]: Without dead ends: 67 [2019-12-07 20:37:27,500 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:37:27,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2019-12-07 20:37:27,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 37. [2019-12-07 20:37:27,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-12-07 20:37:27,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2019-12-07 20:37:27,525 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 8 [2019-12-07 20:37:27,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:27,525 INFO L462 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2019-12-07 20:37:27,525 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:27,525 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2019-12-07 20:37:27,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:37:27,526 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:27,526 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:27,726 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2019-12-07 20:37:27,727 INFO L410 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:27,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:27,728 INFO L82 PathProgramCache]: Analyzing trace with hash 119443416, now seen corresponding path program 1 times [2019-12-07 20:37:27,729 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:27,730 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108497680] [2019-12-07 20:37:27,730 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:27,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:27,823 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:37:27,825 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:27,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:27,844 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:27,852 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:27,852 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108497680] [2019-12-07 20:37:27,853 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:27,853 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 20:37:27,853 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2036680833] [2019-12-07 20:37:27,855 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:27,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:27,856 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:27,856 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:27,856 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 4 states. [2019-12-07 20:37:27,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:27,884 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-12-07 20:37:27,885 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:27,885 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 20:37:27,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:27,886 INFO L225 Difference]: With dead ends: 36 [2019-12-07 20:37:27,886 INFO L226 Difference]: Without dead ends: 36 [2019-12-07 20:37:27,887 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:37:27,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2019-12-07 20:37:27,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2019-12-07 20:37:27,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2019-12-07 20:37:27,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 40 transitions. [2019-12-07 20:37:27,890 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 40 transitions. Word has length 8 [2019-12-07 20:37:27,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:27,890 INFO L462 AbstractCegarLoop]: Abstraction has 36 states and 40 transitions. [2019-12-07 20:37:27,891 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:27,891 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 40 transitions. [2019-12-07 20:37:27,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:37:27,891 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:27,891 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:28,092 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,092 INFO L410 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:28,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:28,093 INFO L82 PathProgramCache]: Analyzing trace with hash 176667333, now seen corresponding path program 1 times [2019-12-07 20:37:28,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:28,094 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [579490666] [2019-12-07 20:37:28,094 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:28,161 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 20:37:28,162 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:28,222 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-12-07 20:37:28,222 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-12-07 20:37:28,223 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:28,244 INFO L614 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-12-07 20:37:28,245 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:28,248 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:28,248 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-12-07 20:37:28,249 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:28,261 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:28,261 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:28,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:28,262 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [579490666] [2019-12-07 20:37:28,263 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:28,263 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 1 [2019-12-07 20:37:28,263 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1116108288] [2019-12-07 20:37:28,263 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:37:28,263 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:28,264 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:37:28,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:37:28,264 INFO L87 Difference]: Start difference. First operand 36 states and 40 transitions. Second operand 3 states. [2019-12-07 20:37:28,318 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:28,318 INFO L93 Difference]: Finished difference Result 49 states and 54 transitions. [2019-12-07 20:37:28,319 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:37:28,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2019-12-07 20:37:28,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:28,320 INFO L225 Difference]: With dead ends: 49 [2019-12-07 20:37:28,320 INFO L226 Difference]: Without dead ends: 49 [2019-12-07 20:37:28,320 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:37:28,320 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2019-12-07 20:37:28,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 39. [2019-12-07 20:37:28,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-12-07 20:37:28,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 45 transitions. [2019-12-07 20:37:28,324 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 45 transitions. Word has length 8 [2019-12-07 20:37:28,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:28,324 INFO L462 AbstractCegarLoop]: Abstraction has 39 states and 45 transitions. [2019-12-07 20:37:28,324 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:37:28,324 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 45 transitions. [2019-12-07 20:37:28,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:37:28,324 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:28,324 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:28,525 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,525 INFO L410 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:28,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:28,525 INFO L82 PathProgramCache]: Analyzing trace with hash 176667334, now seen corresponding path program 1 times [2019-12-07 20:37:28,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:28,526 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1578305240] [2019-12-07 20:37:28,526 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:28,558 INFO L264 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 3 conjunts are in the unsatisfiable core [2019-12-07 20:37:28,559 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:28,577 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:28,578 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 20:37:28,578 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:28,597 INFO L614 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-12-07 20:37:28,598 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:37:28,598 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-12-07 20:37:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:28,606 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:28,637 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:28,637 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1578305240] [2019-12-07 20:37:28,637 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:28,638 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1, 1] imperfect sequences [] total 2 [2019-12-07 20:37:28,638 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2021354904] [2019-12-07 20:37:28,638 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:28,638 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:28,638 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:28,638 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:28,639 INFO L87 Difference]: Start difference. First operand 39 states and 45 transitions. Second operand 4 states. [2019-12-07 20:37:28,709 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:28,709 INFO L93 Difference]: Finished difference Result 70 states and 79 transitions. [2019-12-07 20:37:28,710 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:28,710 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-12-07 20:37:28,710 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:28,710 INFO L225 Difference]: With dead ends: 70 [2019-12-07 20:37:28,710 INFO L226 Difference]: Without dead ends: 70 [2019-12-07 20:37:28,711 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:28,711 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2019-12-07 20:37:28,714 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 58. [2019-12-07 20:37:28,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 20:37:28,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 78 transitions. [2019-12-07 20:37:28,716 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 78 transitions. Word has length 8 [2019-12-07 20:37:28,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:28,716 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 78 transitions. [2019-12-07 20:37:28,716 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:28,716 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 78 transitions. [2019-12-07 20:37:28,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-12-07 20:37:28,716 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:28,716 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:28,917 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,918 INFO L410 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:28,919 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:28,919 INFO L82 PathProgramCache]: Analyzing trace with hash 176666948, now seen corresponding path program 1 times [2019-12-07 20:37:28,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:28,921 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2138156269] [2019-12-07 20:37:28,921 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:28,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:28,992 INFO L264 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:37:28,993 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:29,007 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,008 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:29,028 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,028 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2138156269] [2019-12-07 20:37:29,028 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:29,029 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 8 [2019-12-07 20:37:29,029 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [73347060] [2019-12-07 20:37:29,029 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:37:29,029 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:29,030 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:37:29,031 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:37:29,031 INFO L87 Difference]: Start difference. First operand 58 states and 78 transitions. Second operand 8 states. [2019-12-07 20:37:29,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:29,104 INFO L93 Difference]: Finished difference Result 78 states and 94 transitions. [2019-12-07 20:37:29,104 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-12-07 20:37:29,104 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 8 [2019-12-07 20:37:29,105 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:29,105 INFO L225 Difference]: With dead ends: 78 [2019-12-07 20:37:29,105 INFO L226 Difference]: Without dead ends: 78 [2019-12-07 20:37:29,106 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2019-12-07 20:37:29,107 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2019-12-07 20:37:29,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 62. [2019-12-07 20:37:29,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2019-12-07 20:37:29,111 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 80 transitions. [2019-12-07 20:37:29,111 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 80 transitions. Word has length 8 [2019-12-07 20:37:29,111 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:29,111 INFO L462 AbstractCegarLoop]: Abstraction has 62 states and 80 transitions. [2019-12-07 20:37:29,111 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:37:29,111 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 80 transitions. [2019-12-07 20:37:29,112 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:37:29,112 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:29,112 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:29,312 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2019-12-07 20:37:29,313 INFO L410 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:29,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:29,314 INFO L82 PathProgramCache]: Analyzing trace with hash -592221333, now seen corresponding path program 1 times [2019-12-07 20:37:29,315 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:29,315 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [448473794] [2019-12-07 20:37:29,315 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:29,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:29,415 INFO L264 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 6 conjunts are in the unsatisfiable core [2019-12-07 20:37:29,417 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:29,478 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,478 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:29,522 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,522 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [448473794] [2019-12-07 20:37:29,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:29,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-12-07 20:37:29,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543905741] [2019-12-07 20:37:29,524 INFO L442 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-12-07 20:37:29,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:29,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-12-07 20:37:29,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2019-12-07 20:37:29,525 INFO L87 Difference]: Start difference. First operand 62 states and 80 transitions. Second operand 7 states. [2019-12-07 20:37:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:29,645 INFO L93 Difference]: Finished difference Result 72 states and 79 transitions. [2019-12-07 20:37:29,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:37:29,645 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 9 [2019-12-07 20:37:29,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:29,646 INFO L225 Difference]: With dead ends: 72 [2019-12-07 20:37:29,646 INFO L226 Difference]: Without dead ends: 72 [2019-12-07 20:37:29,646 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2019-12-07 20:37:29,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2019-12-07 20:37:29,649 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2019-12-07 20:37:29,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2019-12-07 20:37:29,650 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 78 transitions. [2019-12-07 20:37:29,650 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 78 transitions. Word has length 9 [2019-12-07 20:37:29,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:29,650 INFO L462 AbstractCegarLoop]: Abstraction has 61 states and 78 transitions. [2019-12-07 20:37:29,650 INFO L463 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-12-07 20:37:29,651 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 78 transitions. [2019-12-07 20:37:29,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-12-07 20:37:29,651 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:29,651 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:29,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2019-12-07 20:37:29,853 INFO L410 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:29,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:29,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1181720059, now seen corresponding path program 1 times [2019-12-07 20:37:29,855 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:29,855 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [229948736] [2019-12-07 20:37:29,856 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:29,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:29,919 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 2 conjunts are in the unsatisfiable core [2019-12-07 20:37:29,919 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:29,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,923 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:29,924 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:29,924 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [229948736] [2019-12-07 20:37:29,924 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:29,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:37:29,925 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [342641204] [2019-12-07 20:37:29,925 INFO L442 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-12-07 20:37:29,925 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:29,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-12-07 20:37:29,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:37:29,926 INFO L87 Difference]: Start difference. First operand 61 states and 78 transitions. Second operand 3 states. [2019-12-07 20:37:29,964 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:29,965 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2019-12-07 20:37:29,965 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-12-07 20:37:29,965 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 9 [2019-12-07 20:37:29,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:29,966 INFO L225 Difference]: With dead ends: 70 [2019-12-07 20:37:29,966 INFO L226 Difference]: Without dead ends: 66 [2019-12-07 20:37:29,966 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-12-07 20:37:29,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2019-12-07 20:37:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2019-12-07 20:37:29,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 20:37:29,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2019-12-07 20:37:29,970 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 9 [2019-12-07 20:37:29,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:29,970 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2019-12-07 20:37:29,970 INFO L463 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-12-07 20:37:29,970 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2019-12-07 20:37:29,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:37:29,970 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:29,970 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:30,171 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2019-12-07 20:37:30,172 INFO L410 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:30,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:30,173 INFO L82 PathProgramCache]: Analyzing trace with hash -1178992070, now seen corresponding path program 1 times [2019-12-07 20:37:30,174 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:30,175 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [639393506] [2019-12-07 20:37:30,175 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:30,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:30,211 INFO L264 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 4 conjunts are in the unsatisfiable core [2019-12-07 20:37:30,212 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:30,216 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 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 0 case distinctions, treesize of input 6 treesize of output 5 [2019-12-07 20:37:30,216 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:30,217 INFO L614 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:30,217 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:37:30,218 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-12-07 20:37:30,226 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:30,226 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:30,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:30,233 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [639393506] [2019-12-07 20:37:30,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:30,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-12-07 20:37:30,233 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1573125379] [2019-12-07 20:37:30,233 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:30,234 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:30,234 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:30,234 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:30,234 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 4 states. [2019-12-07 20:37:30,304 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:30,304 INFO L93 Difference]: Finished difference Result 68 states and 72 transitions. [2019-12-07 20:37:30,305 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:30,305 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 20:37:30,305 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:30,305 INFO L225 Difference]: With dead ends: 68 [2019-12-07 20:37:30,306 INFO L226 Difference]: Without dead ends: 68 [2019-12-07 20:37:30,306 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:37:30,306 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2019-12-07 20:37:30,308 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 58. [2019-12-07 20:37:30,309 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2019-12-07 20:37:30,309 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 71 transitions. [2019-12-07 20:37:30,309 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 71 transitions. Word has length 10 [2019-12-07 20:37:30,309 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:30,309 INFO L462 AbstractCegarLoop]: Abstraction has 58 states and 71 transitions. [2019-12-07 20:37:30,310 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:30,310 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 71 transitions. [2019-12-07 20:37:30,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:37:30,310 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:30,310 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:30,511 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2019-12-07 20:37:30,512 INFO L410 AbstractCegarLoop]: === Iteration 9 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:30,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:30,513 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944307, now seen corresponding path program 1 times [2019-12-07 20:37:30,513 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:30,514 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [182972056] [2019-12-07 20:37:30,514 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 10 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 10 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:30,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:30,587 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 20:37:30,588 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:30,656 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-12-07 20:37:30,657 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-12-07 20:37:30,657 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:30,679 INFO L614 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-12-07 20:37:30,680 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:30,681 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:30,681 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-12-07 20:37:30,681 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:30,707 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:30,708 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 30 [2019-12-07 20:37:30,709 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:30,724 INFO L614 ElimStorePlain]: treesize reduction 14, result has 44.0 percent of original size [2019-12-07 20:37:30,724 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:30,724 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:14, output treesize:11 [2019-12-07 20:37:30,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:30,729 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:30,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:30,744 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [182972056] [2019-12-07 20:37:30,744 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:30,744 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2019-12-07 20:37:30,744 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [805322509] [2019-12-07 20:37:30,745 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:30,745 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:30,745 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:30,745 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:30,745 INFO L87 Difference]: Start difference. First operand 58 states and 71 transitions. Second operand 4 states. [2019-12-07 20:37:30,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:30,791 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2019-12-07 20:37:30,791 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:30,791 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 20:37:30,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:30,792 INFO L225 Difference]: With dead ends: 60 [2019-12-07 20:37:30,792 INFO L226 Difference]: Without dead ends: 60 [2019-12-07 20:37:30,792 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 4 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:37:30,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2019-12-07 20:37:30,794 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 57. [2019-12-07 20:37:30,794 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2019-12-07 20:37:30,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 69 transitions. [2019-12-07 20:37:30,795 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 69 transitions. Word has length 10 [2019-12-07 20:37:30,795 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:30,795 INFO L462 AbstractCegarLoop]: Abstraction has 57 states and 69 transitions. [2019-12-07 20:37:30,795 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:30,795 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 69 transitions. [2019-12-07 20:37:30,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:37:30,795 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:30,795 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:30,996 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 mathsat -unsat_core_generation=3 [2019-12-07 20:37:30,997 INFO L410 AbstractCegarLoop]: === Iteration 10 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:30,997 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:30,998 INFO L82 PathProgramCache]: Analyzing trace with hash -1178944306, now seen corresponding path program 1 times [2019-12-07 20:37:30,998 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:30,999 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [652204670] [2019-12-07 20:37:30,999 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 11 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 11 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:31,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:31,080 INFO L264 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2019-12-07 20:37:31,082 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:31,104 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:31,104 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 25 [2019-12-07 20:37:31,105 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:31,131 INFO L614 ElimStorePlain]: treesize reduction 10, result has 64.3 percent of original size [2019-12-07 20:37:31,132 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:37:31,132 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:13, output treesize:9 [2019-12-07 20:37:31,160 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:31,160 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 28 [2019-12-07 20:37:31,161 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:31,176 INFO L614 ElimStorePlain]: treesize reduction 14, result has 50.0 percent of original size [2019-12-07 20:37:31,177 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:31,177 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:15, output treesize:14 [2019-12-07 20:37:31,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:31,191 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:31,356 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:31,356 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [652204670] [2019-12-07 20:37:31,356 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:31,356 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 6 [2019-12-07 20:37:31,356 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1857762346] [2019-12-07 20:37:31,357 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:37:31,357 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:31,357 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:37:31,357 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:37:31,357 INFO L87 Difference]: Start difference. First operand 57 states and 69 transitions. Second operand 8 states. [2019-12-07 20:37:31,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:31,400 INFO L93 Difference]: Finished difference Result 55 states and 65 transitions. [2019-12-07 20:37:31,400 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:31,400 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 10 [2019-12-07 20:37:31,401 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:31,401 INFO L225 Difference]: With dead ends: 55 [2019-12-07 20:37:31,401 INFO L226 Difference]: Without dead ends: 55 [2019-12-07 20:37:31,401 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2019-12-07 20:37:31,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2019-12-07 20:37:31,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 48. [2019-12-07 20:37:31,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2019-12-07 20:37:31,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 52 transitions. [2019-12-07 20:37:31,403 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 52 transitions. Word has length 10 [2019-12-07 20:37:31,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:31,403 INFO L462 AbstractCegarLoop]: Abstraction has 48 states and 52 transitions. [2019-12-07 20:37:31,403 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:37:31,404 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 52 transitions. [2019-12-07 20:37:31,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-12-07 20:37:31,404 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:31,404 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:31,604 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 mathsat -unsat_core_generation=3 [2019-12-07 20:37:31,606 INFO L410 AbstractCegarLoop]: === Iteration 11 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:31,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:31,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1988338696, now seen corresponding path program 1 times [2019-12-07 20:37:31,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:31,607 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [115572483] [2019-12-07 20:37:31,608 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 12 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 12 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:31,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:31,687 INFO L264 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 5 conjunts are in the unsatisfiable core [2019-12-07 20:37:31,688 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:31,704 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:31,704 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:31,705 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:31,705 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [115572483] [2019-12-07 20:37:31,705 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:31,706 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2019-12-07 20:37:31,706 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1566973712] [2019-12-07 20:37:31,706 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-12-07 20:37:31,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:31,706 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-12-07 20:37:31,706 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-12-07 20:37:31,706 INFO L87 Difference]: Start difference. First operand 48 states and 52 transitions. Second operand 4 states. [2019-12-07 20:37:31,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:31,725 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2019-12-07 20:37:31,726 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-12-07 20:37:31,726 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-12-07 20:37:31,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:31,726 INFO L225 Difference]: With dead ends: 36 [2019-12-07 20:37:31,726 INFO L226 Difference]: Without dead ends: 34 [2019-12-07 20:37:31,726 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-12-07 20:37:31,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-12-07 20:37:31,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2019-12-07 20:37:31,728 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-12-07 20:37:31,728 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 36 transitions. [2019-12-07 20:37:31,728 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 36 transitions. Word has length 10 [2019-12-07 20:37:31,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:31,728 INFO L462 AbstractCegarLoop]: Abstraction has 34 states and 36 transitions. [2019-12-07 20:37:31,728 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-12-07 20:37:31,728 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 36 transitions. [2019-12-07 20:37:31,728 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 20:37:31,728 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:31,728 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:31,929 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 mathsat -unsat_core_generation=3 [2019-12-07 20:37:31,930 INFO L410 AbstractCegarLoop]: === Iteration 12 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:31,931 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:31,931 INFO L82 PathProgramCache]: Analyzing trace with hash 889860305, now seen corresponding path program 1 times [2019-12-07 20:37:31,932 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:31,932 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [937307084] [2019-12-07 20:37:31,932 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 13 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 13 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-12-07 20:37:31,979 INFO L264 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2019-12-07 20:37:31,980 INFO L287 TraceCheckSpWp]: Computing forward predicates... [2019-12-07 20:37:32,015 INFO L343 Elim1Store]: treesize reduction 27, result has 50.9 percent of original size [2019-12-07 20:37:32,015 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 33 [2019-12-07 20:37:32,015 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:32,036 INFO L614 ElimStorePlain]: treesize reduction 10, result has 69.7 percent of original size [2019-12-07 20:37:32,037 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:32,037 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:32,038 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:12, output treesize:23 [2019-12-07 20:37:32,038 INFO L319 QuantifierPusher]: Applying distributivity, recursing on 3 terms [2019-12-07 20:37:32,060 INFO L343 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2019-12-07 20:37:32,061 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2019-12-07 20:37:32,061 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:32,074 INFO L614 ElimStorePlain]: treesize reduction 14, result has 51.7 percent of original size [2019-12-07 20:37:32,074 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-12-07 20:37:32,075 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:17, output treesize:15 [2019-12-07 20:37:32,098 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 17 [2019-12-07 20:37:32,099 INFO L534 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-12-07 20:37:32,106 INFO L614 ElimStorePlain]: treesize reduction 4, result has 73.3 percent of original size [2019-12-07 20:37:32,107 INFO L534 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 1 dim-1 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2019-12-07 20:37:32,107 INFO L239 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:21, output treesize:11 [2019-12-07 20:37:32,120 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:32,120 INFO L329 TraceCheckSpWp]: Computing backward predicates... [2019-12-07 20:37:32,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-12-07 20:37:32,141 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [937307084] [2019-12-07 20:37:32,142 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-12-07 20:37:32,142 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 3] imperfect sequences [] total 6 [2019-12-07 20:37:32,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350268787] [2019-12-07 20:37:32,142 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-12-07 20:37:32,142 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2019-12-07 20:37:32,143 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-12-07 20:37:32,143 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2019-12-07 20:37:32,143 INFO L87 Difference]: Start difference. First operand 34 states and 36 transitions. Second operand 8 states. [2019-12-07 20:37:40,278 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-12-07 20:37:40,278 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2019-12-07 20:37:40,278 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-12-07 20:37:40,278 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 13 [2019-12-07 20:37:40,278 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-12-07 20:37:40,279 INFO L225 Difference]: With dead ends: 39 [2019-12-07 20:37:40,279 INFO L226 Difference]: Without dead ends: 39 [2019-12-07 20:37:40,279 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=67, Unknown=0, NotChecked=0, Total=110 [2019-12-07 20:37:40,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-12-07 20:37:40,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 32. [2019-12-07 20:37:40,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-12-07 20:37:40,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 34 transitions. [2019-12-07 20:37:40,281 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 34 transitions. Word has length 13 [2019-12-07 20:37:40,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-12-07 20:37:40,281 INFO L462 AbstractCegarLoop]: Abstraction has 32 states and 34 transitions. [2019-12-07 20:37:40,281 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-12-07 20:37:40,282 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 34 transitions. [2019-12-07 20:37:40,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-12-07 20:37:40,282 INFO L402 BasicCegarLoop]: Found error trace [2019-12-07 20:37:40,282 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-12-07 20:37:40,483 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 mathsat -unsat_core_generation=3 [2019-12-07 20:37:40,484 INFO L410 AbstractCegarLoop]: === Iteration 13 === [ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr7ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr11REQUIRES_VIOLATION, ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr10REQUIRES_VIOLATION, ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr12ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr6REQUIRES_VIOLATION, ULTIMATE.startErr5REQUIRES_VIOLATION]=== [2019-12-07 20:37:40,484 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-12-07 20:37:40,485 INFO L82 PathProgramCache]: Analyzing trace with hash -1983734109, now seen corresponding path program 1 times [2019-12-07 20:37:40,485 INFO L163 FreeRefinementEngine]: Executing refinement strategy WALRUS [2019-12-07 20:37:40,486 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2044266513] [2019-12-07 20:37:40,486 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_e82c493b-f523-406d-ae56-e2254df7e63e/bin/utaipan/mathsat Starting monitored process 14 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 14 with mathsat -unsat_core_generation=3 [2019-12-07 20:37:40,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:37:40,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-12-07 20:37:40,573 INFO L174 FreeRefinementEngine]: Strategy WALRUS found a feasible trace [2019-12-07 20:37:40,573 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-12-07 20:37:40,774 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 mathsat -unsat_core_generation=3 [2019-12-07 20:37:40,814 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.12 08:37:40 BoogieIcfgContainer [2019-12-07 20:37:40,814 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-12-07 20:37:40,814 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-12-07 20:37:40,814 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-12-07 20:37:40,814 INFO L275 PluginConnector]: Witness Printer initialized [2019-12-07 20:37:40,814 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.12 08:37:27" (3/4) ... [2019-12-07 20:37:40,816 INFO L140 WitnessPrinter]: No result that supports witness generation found [2019-12-07 20:37:40,816 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-12-07 20:37:40,817 INFO L168 Benchmark]: Toolchain (without parser) took 14330.61 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 203.4 MB). Free memory was 948.3 MB in the beginning and 1.0 GB in the end (delta: -72.7 MB). Peak memory consumption was 130.7 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:40,817 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:37:40,818 INFO L168 Benchmark]: CACSL2BoogieTranslator took 453.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -126.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:40,818 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:37:40,818 INFO L168 Benchmark]: Boogie Preprocessor took 19.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:37:40,818 INFO L168 Benchmark]: RCFGBuilder took 262.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:40,818 INFO L168 Benchmark]: TraceAbstraction took 13551.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.7 MB). Peak memory consumption was 103.2 MB. Max. memory is 11.5 GB. [2019-12-07 20:37:40,819 INFO L168 Benchmark]: Witness Printer took 2.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-12-07 20:37:40,820 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 1.0 GB. Free memory is still 981.9 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 453.62 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 126.9 MB). Free memory was 948.3 MB in the beginning and 1.1 GB in the end (delta: -126.3 MB). Peak memory consumption was 20.9 MB. Max. memory is 11.5 GB. * Boogie Procedure Inliner took 37.03 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * Boogie Preprocessor took 19.92 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 262.90 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 26.9 MB). Peak memory consumption was 26.9 MB. Max. memory is 11.5 GB. * TraceAbstraction took 13551.68 ms. Allocated memory was 1.2 GB in the beginning and 1.2 GB in the end (delta: 76.5 MB). Free memory was 1.0 GB in the beginning and 1.0 GB in the end (delta: 26.7 MB). Peak memory consumption was 103.2 MB. Max. memory is 11.5 GB. * Witness Printer took 2.56 ms. Allocated memory is still 1.2 GB. Free memory is still 1.0 GB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 791]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 791. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L783] struct A a6; VAL [a6={3:0}, ldv_global_msg_list={7:0}] [L764] int ret = - -3; [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); VAL [a6={3:0}, ldv_global_msg_list={7:0}] [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L758] return __VERIFIER_nondet_int(); [L768] ret = f6() [L769] COND FALSE !(ret<0) [L761] return __VERIFIER_nondet_int(); [L771] ret = g6() [L772] COND TRUE ret<0 [L773] return ret; VAL [a6={3:0}, ldv_global_msg_list={7:0}] [L785] int ret = probe2_6(&a6); [L786] COND FALSE !(ret==0) VAL [a6={3:0}, ldv_global_msg_list={7:0}] [L789] a6.p = 0 VAL [a6={3:0}, ldv_global_msg_list={7:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 37 locations, 13 error locations. Result: UNSAFE, OverallTime: 13.4s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 8.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 394 SDtfs, 714 SDslu, 483 SDs, 0 SdLazy, 303 SolverSat, 26 SolverUnsat, 4 SolverUnknown, 0 SolverNotchecked, 8.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 214 GetRequests, 155 SyntacticMatches, 6 SemanticMatches, 53 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=62occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 12 MinimizatonAttempts, 114 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 124 NumberOfCodeBlocks, 124 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 198 ConstructedInterpolants, 5 QuantifiedInterpolants, 10258 SizeOfPredicates, 34 NumberOfNonLiveVariables, 549 ConjunctsInSsa, 56 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...