./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 7b2dab56 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/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 702f633b7e7ff05b6cbb070b8858a8adcd841273 ............................................................................................................................................ Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/config -Xmx15G -Xms4m -jar /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data -tc /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/TaipanMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i -s /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/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 702f633b7e7ff05b6cbb070b8858a8adcd841273 .................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: TRUE --- Real Ultimate output --- This is Ultimate 0.2.0-7b2dab5 [2020-12-09 09:37:08,630 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:37:08,638 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:37:08,672 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:37:08,672 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:37:08,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:37:08,681 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:37:08,683 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:37:08,685 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:37:08,686 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:37:08,687 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:37:08,689 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:37:08,689 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:37:08,691 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:37:08,692 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:37:08,693 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:37:08,694 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:37:08,695 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:37:08,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:37:08,699 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:37:08,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:37:08,703 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:37:08,704 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:37:08,705 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:37:08,708 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:37:08,709 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:37:08,709 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:37:08,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:37:08,710 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:37:08,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:37:08,712 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:37:08,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:37:08,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:37:08,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:37:08,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:37:08,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:37:08,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:37:08,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:37:08,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:37:08,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:37:08,718 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:37:08,719 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Default.epf [2020-12-09 09:37:08,746 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:37:08,746 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:37:08,747 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:37:08,747 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:37:08,747 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:37:08,747 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:37:08,747 INFO L138 SettingsManager]: * Abstract domain for RCFG-of-the-future=PoormanAbstractDomain [2020-12-09 09:37:08,748 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:37:08,748 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:37:08,748 INFO L138 SettingsManager]: * Check feasibility of abstract posts with an SMT solver=true [2020-12-09 09:37:08,748 INFO L138 SettingsManager]: * Use the RCFG-of-the-future interface=true [2020-12-09 09:37:08,748 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:37:08,749 INFO L136 SettingsManager]: Preferences of Sifa differ from their defaults: [2020-12-09 09:37:08,749 INFO L138 SettingsManager]: * Call Summarizer=TopInputCallSummarizer [2020-12-09 09:37:08,749 INFO L138 SettingsManager]: * Simplification Technique=SIMPLIFY_QUICK [2020-12-09 09:37:08,750 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 09:37:08,750 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 09:37:08,750 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:37:08,750 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:37:08,750 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 09:37:08,751 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:37:08,751 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:37:08,751 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:37:08,751 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 09:37:08,751 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 09:37:08,752 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 09:37:08,752 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:37:08,752 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:37:08,752 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:37:08,752 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:37:08,753 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:37:08,753 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:37:08,753 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:37:08,753 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:37:08,753 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:37:08,754 INFO L138 SettingsManager]: * Trace refinement strategy=SIFA_TAIPAN [2020-12-09 09:37:08,754 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-09 09:37:08,754 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:37:08,754 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:37:08,754 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702f633b7e7ff05b6cbb070b8858a8adcd841273 [2020-12-09 09:37:08,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:37:08,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:37:08,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:37:08,955 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:37:08,956 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:37:08,957 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-12-09 09:37:09,000 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/803e7d572/1bad9bddcd024dff90ffdbe0d0ba94d9/FLAG251b275c3 [2020-12-09 09:37:09,460 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:37:09,460 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-12-09 09:37:09,474 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/803e7d572/1bad9bddcd024dff90ffdbe0d0ba94d9/FLAG251b275c3 [2020-12-09 09:37:09,486 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/803e7d572/1bad9bddcd024dff90ffdbe0d0ba94d9 [2020-12-09 09:37:09,488 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:37:09,490 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:37:09,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:37:09,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:37:09,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:37:09,494 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:37:09" (1/1) ... [2020-12-09 09:37:09,495 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24694097 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:09, skipping insertion in model container [2020-12-09 09:37:09,495 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:37:09" (1/1) ... [2020-12-09 09:37:09,500 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:37:09,531 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:37:09,770 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:37:09,783 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) [2020-12-09 09:37:09,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7061077e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:09, skipping insertion in model container [2020-12-09 09:37:09,783 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:37:09,783 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2020-12-09 09:37:09,785 INFO L168 Benchmark]: Toolchain (without parser) took 294.58 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 84.2 MB in the end (delta: 686.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:09,785 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 76.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:37:09,786 INFO L168 Benchmark]: CACSL2BoogieTranslator took 292.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 84.2 MB in the end (delta: 686.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:09,787 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 111.1 MB. Free memory was 76.2 MB in the beginning and 76.1 MB in the end (delta: 117.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 292.71 ms. Allocated memory is still 111.1 MB. Free memory was 84.8 MB in the beginning and 84.2 MB in the end (delta: 686.1 kB). Peak memory consumption was 8.4 MB. Max. memory is 16.1 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 0.2.0-7b2dab5 [2020-12-09 09:37:11,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-09 09:37:11,141 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-09 09:37:11,169 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-09 09:37:11,169 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-09 09:37:11,170 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-09 09:37:11,172 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-09 09:37:11,173 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-09 09:37:11,175 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-09 09:37:11,176 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-09 09:37:11,177 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-09 09:37:11,178 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-09 09:37:11,178 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-09 09:37:11,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-09 09:37:11,180 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-09 09:37:11,181 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-09 09:37:11,181 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-09 09:37:11,182 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-09 09:37:11,184 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-09 09:37:11,185 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-09 09:37:11,187 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-09 09:37:11,189 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-09 09:37:11,190 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-09 09:37:11,191 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-09 09:37:11,195 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-12-09 09:37:11,195 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-12-09 09:37:11,195 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-12-09 09:37:11,197 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-12-09 09:37:11,197 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-12-09 09:37:11,198 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-12-09 09:37:11,199 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-09 09:37:11,199 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-09 09:37:11,200 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-09 09:37:11,201 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-09 09:37:11,202 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-09 09:37:11,203 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-09 09:37:11,203 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-09 09:37:11,203 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-09 09:37:11,204 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-09 09:37:11,204 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-09 09:37:11,205 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-09 09:37:11,206 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/config/svcomp-DerefFreeMemtrack-32bit-Taipan_Bitvector.epf [2020-12-09 09:37:11,236 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-09 09:37:11,236 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-09 09:37:11,237 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2020-12-09 09:37:11,237 INFO L138 SettingsManager]: * User list type=DISABLED [2020-12-09 09:37:11,237 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2020-12-09 09:37:11,237 INFO L138 SettingsManager]: * Explicit value domain=true [2020-12-09 09:37:11,238 INFO L138 SettingsManager]: * Octagon Domain=false [2020-12-09 09:37:11,238 INFO L138 SettingsManager]: * Abstract domain=CompoundDomain [2020-12-09 09:37:11,238 INFO L138 SettingsManager]: * Interval Domain=false [2020-12-09 09:37:11,239 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-09 09:37:11,239 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-09 09:37:11,239 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-09 09:37:11,239 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-09 09:37:11,240 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-12-09 09:37:11,240 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-09 09:37:11,240 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-09 09:37:11,240 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-09 09:37:11,240 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-12-09 09:37:11,241 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-12-09 09:37:11,241 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-12-09 09:37:11,241 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-09 09:37:11,241 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-12-09 09:37:11,241 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2020-12-09 09:37:11,242 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2020-12-09 09:37:11,242 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-09 09:37:11,242 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-09 09:37:11,242 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-09 09:37:11,242 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-09 09:37:11,243 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-09 09:37:11,243 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:37:11,243 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-09 09:37:11,243 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-09 09:37:11,244 INFO L138 SettingsManager]: * Trace refinement strategy=WALRUS [2020-12-09 09:37:11,244 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2020-12-09 09:37:11,244 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-12-09 09:37:11,244 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-12-09 09:37:11,244 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Taipan Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 702f633b7e7ff05b6cbb070b8858a8adcd841273 [2020-12-09 09:37:11,500 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-09 09:37:11,515 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-09 09:37:11,517 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-09 09:37:11,517 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-09 09:37:11,518 INFO L275 PluginConnector]: CDTParser initialized [2020-12-09 09:37:11,519 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/../../sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-12-09 09:37:11,561 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/c8f651bce/840a2f6985464f74ba89b03c97ce511a/FLAG20bed01b8 [2020-12-09 09:37:12,006 INFO L306 CDTParser]: Found 1 translation units. [2020-12-09 09:37:12,007 INFO L160 CDTParser]: Scanning /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/sv-benchmarks/c/ldv-memsafety/memleaks_test21-2.i [2020-12-09 09:37:12,021 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/c8f651bce/840a2f6985464f74ba89b03c97ce511a/FLAG20bed01b8 [2020-12-09 09:37:12,031 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/data/c8f651bce/840a2f6985464f74ba89b03c97ce511a [2020-12-09 09:37:12,033 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-09 09:37:12,034 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-12-09 09:37:12,035 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-09 09:37:12,035 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-09 09:37:12,037 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-09 09:37:12,038 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,039 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@716de9e4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12, skipping insertion in model container [2020-12-09 09:37:12,039 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,044 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-09 09:37:12,080 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:37:12,344 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:37:12,358 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2020-12-09 09:37:12,363 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-09 09:37:12,398 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:37:12,404 INFO L203 MainTranslator]: Completed pre-run [2020-12-09 09:37:12,440 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-09 09:37:12,505 INFO L208 MainTranslator]: Completed translation [2020-12-09 09:37:12,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12 WrapperNode [2020-12-09 09:37:12,505 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-09 09:37:12,506 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-09 09:37:12,506 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-09 09:37:12,506 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-09 09:37:12,512 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,530 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,545 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-09 09:37:12,546 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-09 09:37:12,546 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-09 09:37:12,546 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-09 09:37:12,553 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,553 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,556 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,556 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,561 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,563 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,564 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... [2020-12-09 09:37:12,566 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-09 09:37:12,567 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-09 09:37:12,568 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-09 09:37:12,568 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-09 09:37:12,568 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (1/1) ... No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-09 09:37:12,620 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-12-09 09:37:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-09 09:37:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-09 09:37:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-12-09 09:37:12,621 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-09 09:37:12,621 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-09 09:37:12,837 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-09 09:37:12,837 INFO L299 CfgBuilder]: Removed 12 assume(true) statements. [2020-12-09 09:37:12,838 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:37:12 BoogieIcfgContainer [2020-12-09 09:37:12,838 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-09 09:37:12,840 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-09 09:37:12,840 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-09 09:37:12,844 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-09 09:37:12,844 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 09.12 09:37:12" (1/3) ... [2020-12-09 09:37:12,845 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5813fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:37:12, skipping insertion in model container [2020-12-09 09:37:12,845 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 09.12 09:37:12" (2/3) ... [2020-12-09 09:37:12,846 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5813fbb4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 09.12 09:37:12, skipping insertion in model container [2020-12-09 09:37:12,846 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:37:12" (3/3) ... [2020-12-09 09:37:12,847 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test21-2.i [2020-12-09 09:37:12,860 INFO L180 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-09 09:37:12,862 INFO L192 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-12-09 09:37:12,869 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-09 09:37:12,883 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-09 09:37:12,883 INFO L378 AbstractCegarLoop]: Hoare is false [2020-12-09 09:37:12,883 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-09 09:37:12,883 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-09 09:37:12,883 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-09 09:37:12,883 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-09 09:37:12,883 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-12-09 09:37:12,883 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-09 09:37:12,891 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-12-09 09:37:12,895 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:37:12,895 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:12,896 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:12,896 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:12,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:12,901 INFO L82 PathProgramCache]: Analyzing trace with hash 119383820, now seen corresponding path program 1 times [2020-12-09 09:37:12,912 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:12,913 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1763964835] [2020-12-09 09:37:12,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 2 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:12,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:12,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 45 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:37:12,992 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:13,075 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:13,076 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:13,077 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1763964835] [2020-12-09 09:37:13,077 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:13,077 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:37:13,078 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [495857713] [2020-12-09 09:37:13,081 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:37:13,081 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:13,092 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:37:13,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:37:13,094 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 7 states. [2020-12-09 09:37:13,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:13,193 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2020-12-09 09:37:13,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 09:37:13,194 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 8 [2020-12-09 09:37:13,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:13,199 INFO L225 Difference]: With dead ends: 32 [2020-12-09 09:37:13,199 INFO L226 Difference]: Without dead ends: 26 [2020-12-09 09:37:13,200 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-12-09 09:37:13,211 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-12-09 09:37:13,219 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 18. [2020-12-09 09:37:13,220 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 09:37:13,220 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2020-12-09 09:37:13,221 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 8 [2020-12-09 09:37:13,221 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:13,221 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2020-12-09 09:37:13,221 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:37:13,221 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2020-12-09 09:37:13,222 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:37:13,222 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:13,222 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:13,422 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 mathsat -unsat_core_generation=3 [2020-12-09 09:37:13,424 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:13,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:13,426 INFO L82 PathProgramCache]: Analyzing trace with hash 119443402, now seen corresponding path program 1 times [2020-12-09 09:37:13,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:13,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1062232333] [2020-12-09 09:37:13,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 3 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:13,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:13,586 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 4 conjunts are in the unsatisfiable core [2020-12-09 09:37:13,588 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:13,606 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:13,606 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:13,606 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1062232333] [2020-12-09 09:37:13,606 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:13,607 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:37:13,607 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469658464] [2020-12-09 09:37:13,608 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:37:13,608 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:13,608 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:37:13,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:37:13,609 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand 4 states. [2020-12-09 09:37:13,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:13,625 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2020-12-09 09:37:13,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:37:13,626 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 09:37:13,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:13,626 INFO L225 Difference]: With dead ends: 29 [2020-12-09 09:37:13,626 INFO L226 Difference]: Without dead ends: 29 [2020-12-09 09:37:13,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:37:13,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-12-09 09:37:13,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 20. [2020-12-09 09:37:13,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 09:37:13,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-12-09 09:37:13,630 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 8 [2020-12-09 09:37:13,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:13,630 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-12-09 09:37:13,630 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:37:13,630 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-12-09 09:37:13,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:37:13,630 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:13,630 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:13,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 mathsat -unsat_core_generation=3 [2020-12-09 09:37:13,832 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:13,834 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:13,834 INFO L82 PathProgramCache]: Analyzing trace with hash 176701704, now seen corresponding path program 1 times [2020-12-09 09:37:13,835 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:13,836 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1135415648] [2020-12-09 09:37:13,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 4 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:13,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:13,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 9 conjunts are in the unsatisfiable core [2020-12-09 09:37:13,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:13,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:13,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:13,945 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1135415648] [2020-12-09 09:37:13,945 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:13,945 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:37:13,945 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [425673961] [2020-12-09 09:37:13,945 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:37:13,945 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:13,946 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:37:13,946 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:37:13,946 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 4 states. [2020-12-09 09:37:13,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:13,965 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-12-09 09:37:13,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:37:13,965 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-12-09 09:37:13,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:13,966 INFO L225 Difference]: With dead ends: 20 [2020-12-09 09:37:13,966 INFO L226 Difference]: Without dead ends: 20 [2020-12-09 09:37:13,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:37:13,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-12-09 09:37:13,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 18. [2020-12-09 09:37:13,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-12-09 09:37:13,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-12-09 09:37:13,968 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 8 [2020-12-09 09:37:13,968 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:13,968 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-12-09 09:37:13,968 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:37:13,968 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-12-09 09:37:13,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-12-09 09:37:13,968 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:13,968 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:14,169 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 mathsat -unsat_core_generation=3 [2020-12-09 09:37:14,170 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:14,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:14,172 INFO L82 PathProgramCache]: Analyzing trace with hash 176701963, now seen corresponding path program 1 times [2020-12-09 09:37:14,173 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:14,174 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1196943523] [2020-12-09 09:37:14,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 5 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:14,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:14,293 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 2 conjunts are in the unsatisfiable core [2020-12-09 09:37:14,294 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:14,302 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:14,303 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:14,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1196943523] [2020-12-09 09:37:14,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:14,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2020-12-09 09:37:14,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [494301908] [2020-12-09 09:37:14,303 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-12-09 09:37:14,303 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:14,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-12-09 09:37:14,304 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:37:14,304 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 3 states. [2020-12-09 09:37:14,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:14,319 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2020-12-09 09:37:14,319 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-12-09 09:37:14,319 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 8 [2020-12-09 09:37:14,320 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:14,320 INFO L225 Difference]: With dead ends: 26 [2020-12-09 09:37:14,320 INFO L226 Difference]: Without dead ends: 23 [2020-12-09 09:37:14,321 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-12-09 09:37:14,321 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-12-09 09:37:14,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 14. [2020-12-09 09:37:14,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14 states. [2020-12-09 09:37:14,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2020-12-09 09:37:14,323 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 8 [2020-12-09 09:37:14,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:14,324 INFO L481 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2020-12-09 09:37:14,324 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-12-09 09:37:14,324 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2020-12-09 09:37:14,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:37:14,324 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:14,324 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:14,525 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 mathsat -unsat_core_generation=3 [2020-12-09 09:37:14,525 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:14,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:14,526 INFO L82 PathProgramCache]: Analyzing trace with hash -594068823, now seen corresponding path program 1 times [2020-12-09 09:37:14,526 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:14,526 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1546749555] [2020-12-09 09:37:14,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 6 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:14,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:14,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 12 conjunts are in the unsatisfiable core [2020-12-09 09:37:14,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:14,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:14,653 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:14,653 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1546749555] [2020-12-09 09:37:14,653 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:14,653 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:37:14,653 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1698369353] [2020-12-09 09:37:14,653 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-09 09:37:14,653 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:14,654 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-09 09:37:14,654 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-12-09 09:37:14,654 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand 8 states. [2020-12-09 09:37:14,859 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:14,860 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2020-12-09 09:37:14,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-12-09 09:37:14,860 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 9 [2020-12-09 09:37:14,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:14,861 INFO L225 Difference]: With dead ends: 24 [2020-12-09 09:37:14,861 INFO L226 Difference]: Without dead ends: 24 [2020-12-09 09:37:14,861 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=50, Invalid=82, Unknown=0, NotChecked=0, Total=132 [2020-12-09 09:37:14,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-12-09 09:37:14,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 20. [2020-12-09 09:37:14,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-12-09 09:37:14,864 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-12-09 09:37:14,864 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 9 [2020-12-09 09:37:14,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:14,864 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-12-09 09:37:14,864 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-12-09 09:37:14,864 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-12-09 09:37:14,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-12-09 09:37:14,865 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:14,865 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:15,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,066 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:15,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:15,068 INFO L82 PathProgramCache]: Analyzing trace with hash 1180938539, now seen corresponding path program 1 times [2020-12-09 09:37:15,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:15,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [517910611] [2020-12-09 09:37:15,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 7 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 7 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:15,115 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2020-12-09 09:37:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:15,134 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:15,134 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:15,134 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [517910611] [2020-12-09 09:37:15,135 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:15,135 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-12-09 09:37:15,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [577667187] [2020-12-09 09:37:15,135 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-12-09 09:37:15,135 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:15,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-12-09 09:37:15,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-12-09 09:37:15,136 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-12-09 09:37:15,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:15,152 INFO L93 Difference]: Finished difference Result 15 states and 14 transitions. [2020-12-09 09:37:15,153 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-12-09 09:37:15,153 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-12-09 09:37:15,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:15,153 INFO L225 Difference]: With dead ends: 15 [2020-12-09 09:37:15,153 INFO L226 Difference]: Without dead ends: 13 [2020-12-09 09:37:15,154 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-12-09 09:37:15,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-12-09 09:37:15,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-12-09 09:37:15,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-12-09 09:37:15,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 12 transitions. [2020-12-09 09:37:15,156 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 12 transitions. Word has length 9 [2020-12-09 09:37:15,156 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:15,156 INFO L481 AbstractCegarLoop]: Abstraction has 13 states and 12 transitions. [2020-12-09 09:37:15,156 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-12-09 09:37:15,156 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 12 transitions. [2020-12-09 09:37:15,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-12-09 09:37:15,156 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:15,156 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:15,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,357 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:15,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:15,358 INFO L82 PathProgramCache]: Analyzing trace with hash -1236264274, now seen corresponding path program 1 times [2020-12-09 09:37:15,358 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:15,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [444483871] [2020-12-09 09:37:15,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 8 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 8 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:15,455 INFO L263 TraceCheckSpWp]: Trace formula consists of 48 conjuncts, 10 conjunts are in the unsatisfiable core [2020-12-09 09:37:15,456 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:15,482 INFO L382 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 [2020-12-09 09:37:15,483 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:37:15,485 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:37:15,486 INFO L547 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-12-09 09:37:15,486 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-12-09 09:37:15,524 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:15,524 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:15,524 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [444483871] [2020-12-09 09:37:15,524 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:15,524 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-09 09:37:15,525 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1652622384] [2020-12-09 09:37:15,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-09 09:37:15,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:15,525 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-09 09:37:15,526 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-09 09:37:15,526 INFO L87 Difference]: Start difference. First operand 13 states and 12 transitions. Second operand 7 states. [2020-12-09 09:37:15,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:15,609 INFO L93 Difference]: Finished difference Result 12 states and 11 transitions. [2020-12-09 09:37:15,609 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-12-09 09:37:15,609 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 10 [2020-12-09 09:37:15,610 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:15,610 INFO L225 Difference]: With dead ends: 12 [2020-12-09 09:37:15,610 INFO L226 Difference]: Without dead ends: 12 [2020-12-09 09:37:15,610 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-12-09 09:37:15,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12 states. [2020-12-09 09:37:15,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12 to 12. [2020-12-09 09:37:15,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12 states. [2020-12-09 09:37:15,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 11 transitions. [2020-12-09 09:37:15,611 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 11 transitions. Word has length 10 [2020-12-09 09:37:15,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:15,611 INFO L481 AbstractCegarLoop]: Abstraction has 12 states and 11 transitions. [2020-12-09 09:37:15,611 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-12-09 09:37:15,611 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 11 transitions. [2020-12-09 09:37:15,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-12-09 09:37:15,612 INFO L414 BasicCegarLoop]: Found error trace [2020-12-09 09:37:15,612 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-09 09:37:15,812 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,813 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE]=== [2020-12-09 09:37:15,814 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-09 09:37:15,815 INFO L82 PathProgramCache]: Analyzing trace with hash 330513232, now seen corresponding path program 1 times [2020-12-09 09:37:15,815 INFO L162 FreeRefinementEngine]: Executing refinement strategy WALRUS [2020-12-09 09:37:15,816 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1482759825] [2020-12-09 09:37:15,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/mathsat Starting monitored process 9 with mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 9 with mathsat -unsat_core_generation=3 [2020-12-09 09:37:15,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-09 09:37:15,921 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 14 conjunts are in the unsatisfiable core [2020-12-09 09:37:15,922 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-12-09 09:37:15,935 INFO L348 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-12-09 09:37:15,936 INFO L382 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 [2020-12-09 09:37:15,938 INFO L547 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-12-09 09:37:15,950 INFO L625 ElimStorePlain]: treesize reduction 12, result has 55.6 percent of original size [2020-12-09 09:37:15,957 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:37:15,959 INFO L547 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. [2020-12-09 09:37:15,959 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 2 variables, input treesize:9, output treesize:15 [2020-12-09 09:37:15,960 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:37:15,970 INFO L639 QuantifierPusher]: Distributing 2 conjuncts over 2 disjuncts [2020-12-09 09:37:18,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-09 09:37:18,141 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2020-12-09 09:37:18,141 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1482759825] [2020-12-09 09:37:18,141 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-09 09:37:18,142 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-09 09:37:18,142 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1137500094] [2020-12-09 09:37:18,142 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-12-09 09:37:18,142 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WALRUS [2020-12-09 09:37:18,142 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-12-09 09:37:18,142 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=64, Unknown=1, NotChecked=0, Total=90 [2020-12-09 09:37:18,143 INFO L87 Difference]: Start difference. First operand 12 states and 11 transitions. Second operand 10 states. [2020-12-09 09:37:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-09 09:37:20,428 INFO L93 Difference]: Finished difference Result 11 states and 10 transitions. [2020-12-09 09:37:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-09 09:37:20,429 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 11 [2020-12-09 09:37:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-09 09:37:20,429 INFO L225 Difference]: With dead ends: 11 [2020-12-09 09:37:20,429 INFO L226 Difference]: Without dead ends: 0 [2020-12-09 09:37:20,430 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=57, Invalid=124, Unknown=1, NotChecked=0, Total=182 [2020-12-09 09:37:20,430 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-12-09 09:37:20,430 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-12-09 09:37:20,430 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-12-09 09:37:20,430 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-12-09 09:37:20,430 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 11 [2020-12-09 09:37:20,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-09 09:37:20,430 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-12-09 09:37:20,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-12-09 09:37:20,430 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-12-09 09:37:20,430 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-09 09:37:20,631 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 mathsat -unsat_core_generation=3 [2020-12-09 09:37:20,638 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 09.12 09:37:20 BoogieIcfgContainer [2020-12-09 09:37:20,638 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-09 09:37:20,638 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-12-09 09:37:20,638 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-12-09 09:37:20,639 INFO L275 PluginConnector]: Witness Printer initialized [2020-12-09 09:37:20,639 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 09.12 09:37:12" (3/4) ... [2020-12-09 09:37:20,641 INFO L137 WitnessPrinter]: Generating witness for correct program [2020-12-09 09:37:20,647 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 9 nodes and edges [2020-12-09 09:37:20,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2020-12-09 09:37:20,648 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2020-12-09 09:37:20,681 INFO L141 WitnessManager]: Wrote witness to /tmp/vcloud-vcloud-master/worker/run_dir_bd9930c4-368b-41a0-96bf-de7abaf7b987/bin/utaipan/witness.graphml [2020-12-09 09:37:20,681 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-12-09 09:37:20,681 INFO L168 Benchmark]: Toolchain (without parser) took 8647.47 ms. Allocated memory was 60.8 MB in the beginning and 96.5 MB in the end (delta: 35.7 MB). Free memory was 40.7 MB in the beginning and 76.6 MB in the end (delta: -35.9 MB). Peak memory consumption was 52.5 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,682 INFO L168 Benchmark]: CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.6 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. [2020-12-09 09:37:20,682 INFO L168 Benchmark]: CACSL2BoogieTranslator took 471.07 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.5 MB in the beginning and 47.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,683 INFO L168 Benchmark]: Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 79.7 MB. Free memory was 47.5 MB in the beginning and 45.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,683 INFO L168 Benchmark]: Boogie Preprocessor took 20.56 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,683 INFO L168 Benchmark]: RCFGBuilder took 271.20 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 52.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,684 INFO L168 Benchmark]: TraceAbstraction took 7797.99 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.6 MB in the beginning and 26.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,684 INFO L168 Benchmark]: Witness Printer took 42.41 ms. Allocated memory is still 96.5 MB. Free memory was 26.7 MB in the beginning and 76.6 MB in the end (delta: -49.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. [2020-12-09 09:37:20,686 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11 ms. Allocated memory is still 60.8 MB. Free memory was 43.6 MB in the beginning and 43.6 MB in the end (delta: 83.9 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 471.07 ms. Allocated memory was 60.8 MB in the beginning and 79.7 MB in the end (delta: 18.9 MB). Free memory was 40.5 MB in the beginning and 47.5 MB in the end (delta: -7.0 MB). Peak memory consumption was 16.4 MB. Max. memory is 16.1 GB. * Boogie Procedure Inliner took 39.49 ms. Allocated memory is still 79.7 MB. Free memory was 47.5 MB in the beginning and 45.3 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 20.56 ms. Allocated memory is still 79.7 MB. Free memory was 45.3 MB in the beginning and 44.0 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * RCFGBuilder took 271.20 ms. Allocated memory is still 79.7 MB. Free memory was 44.0 MB in the beginning and 52.3 MB in the end (delta: -8.3 MB). Peak memory consumption was 7.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 7797.99 ms. Allocated memory was 79.7 MB in the beginning and 96.5 MB in the end (delta: 16.8 MB). Free memory was 51.6 MB in the beginning and 26.7 MB in the end (delta: 24.9 MB). Peak memory consumption was 41.0 MB. Max. memory is 16.1 GB. * Witness Printer took 42.41 ms. Allocated memory is still 96.5 MB. Free memory was 26.7 MB in the beginning and 76.6 MB in the end (delta: -49.9 MB). Peak memory consumption was 2.1 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 779]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 772]: free always succeeds For all program executions holds that free always succeeds at this location - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 17 locations, 4 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 7.7s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 2.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 94 SDtfs, 191 SDslu, 153 SDs, 0 SdLazy, 187 SolverSat, 5 SolverUnsat, 1 SolverUnknown, 0 SolverNotchecked, 2.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 83 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 2.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=2, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 8 MinimizatonAttempts, 32 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 63 ConstructedInterpolants, 10 QuantifiedInterpolants, 3193 SizeOfPredicates, 44 NumberOfNonLiveVariables, 351 ConjunctsInSsa, 66 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...